Hytera PD70X Service Manual
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Hytera PD70X Service Manual

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Summary of Contents for Hytera PD70X

  • Page 2 This manual describes information related with product repair. To repair the product properly, please read this manual carefully. This manual is applicable to the following model: PD70X (X may indicate 2, 5, 6 or 8) PD70XG (X may indicate 2, 5, 6 or 8) PD78X (X may indicate 2, 5, 6 or 8)
  • Page 3 Copyright Information Hytera is the trademark or registered trademark of Hytera Communications Co., Ltd. (the Company) in PRC and/or other countries or areas. The Company retains the ownership of its trademarks and product names. All other trademarks and/or product names that may be used in this manual are properties of their respective owners.

  • Page 4: Table Of Contents

    Service Manual Contents Contents Documentation Information........................1 1. Introduction ............................2 2. Product Controls ..........................3 3. Baseband Section ..........................6 3.1 Power Section..........................6 3.1.1 Diagram of Power Control ....................6 3.1.2 Radio On/Off.........................6 3.1.3 Power Protection ........................7 3.1.4 Power Consumption Control ....................7 3.2 Control Section ..........................7 3.2.1 OMAP5912 Dual-core Processor..................7 3.2.2 External Memory........................9 3.2.3 Clock...........................10...
  • Page 5 Contents Service Manual 7.1.1 RF Power Amplifier Circuit ....................32 7.1.2 Low-pass Filter Circuit ......................33 7.1.3 Auto Power Control Circuit....................33 7.2 Receiver Circuit..........................33 7.2.1 Receiver Front-end ......................34 7.2.2 Receiver Back-end ......................35 7.3 Frequency Generation Unit (FGU) ....................35 7.3.1 Working Principle of PLL.....................36 7.3.2 Working Principle of VCO ....................37 7.3.3 Two-point Modulation......................37 7.4 PCB View............................38...
  • Page 6 Service Manual Contents 9.2.1 Receiver Front-end ......................213 9.2.2 Receiver Back-end ......................214 9.3 Frequency Generation Unit (FGU) ....................214 9.3.1 Working Principle of PLL....................215 9.3.2 Working Principle of VCO ....................215 9.3.3 Two-point Modulation......................216 9.4 PCB View............................217 9.5 Block Diagram ..........................225 9.6 Schematic Diagram........................228 9.7 Parts List.............................244 9.8 Troubleshooting Flow Chart......................295 10.
  • Page 7 Contents Service Manual 11.3.2 Working Principle of VCO ....................400 11.3.3 Direct Modulation ......................401 11.4 PCB View..........................402 11.5 Block Diagram ..........................410 11.6 Schematic Diagram........................413 11.7 Parts List...........................429 11.8 Troubleshooting Flow Chart......................482 12. Disassembly and Assembly ......................488 12.1 Disassembling the Chassis.......................488 12.2 Disassembling the TX and RX Units ..................488 12.3 Assembly ..........................489 13.
  • Page 8 Service Manual Figures Figures Figure 3-1 Diagram of Power Control .......................6 Figure 3-2 Diagram of Radio On/Off Control ....................6 Figure 3-3 Diagram of OMAP5912 ......................8 Figure 3-4 Diagram of Overall Scheme ....................8 Figure 3-5 Diagram of External Memory....................9 Figure 3-6 Diagram of Baseband Clock....................10 Figure 3-7 Diagram of Reset Signal .......................11 Figure 3-8 Diagram of SPI Connection....................11 Figure 3-9 Diagram of MCBSP Connection....................12...
  • Page 9 Figures Service Manual Figure 11-3 Diagram of IF Processor....................399 Figure 11-4 Diagram of FGU ........................400...
  • Page 10 Service Manual Tables Tables Table 6-1 Definition of 50-Pin Interface ....................27 Table 6-2 Definition of 30-Pin LCD Interface ..................27 Table 6-3 Definition of Channel Board Interface ..................28 Table 6-4 Definition of 20-Pin Option Board Interface ................30 Table 6-5 Definition of 16-Pin Accessory Interface .................30 Table 6-6 Definition of Accessory Identifiers ...................31 Table 16-1 UHF1 Blind Spot .........................501 Table 16-2 UHF2 Blind Spot .........................501...

  • Page 11: Documentation Information

    Service Manual Documentation Information Documentation Information This section describes the conventions and revision history of this document. Instructional Icons Icon Description Indicates information that can help you make better use of your product. Note Indicates references that can further describe the related topics. Caution Indicates situations that could cause data loss or equipment damage.

  • Page 12: Introduction

    Introduction Service Manual 1. Introduction Intended User This manual is intended for use by qualified technicians only.

  • Page 13: Product Controls

    Service Manual Product Controls 2. Product Controls PD70X/ PD70XG/ HD705/ HD705G Part Name Part Name SK1 (Side Key 1) Radio On-Off/Volume Control Knob PTT Key Microphone SK2 (Side Key 2) Accessory Jack TK (Top Key) Battery Latch Channel Selector Knob...
  • Page 14 Product Controls Service Manual PD78X/ PD78XG/ HD785/ HD785G Part Name Part Name SK1 (Side Key 1) LED Indicator PTT Key Antenna Radio On-Off/Volume Control SK2 (Side Key 2) Knob TK (Top Key) Accessory Jack Group Call Selector Knob (trunking mode) Back/Group Call Management Volume Control/Channel...
  • Page 15 Service Manual Product Controls Part Name Part Name Dial-back/End/Home Screen Key (trunking mode) Microphone Programmable (conventional mode) LCD Display Up Key OK/Menu Key Down Key Answer/Redial/Call (trunking mode) Battery Latch Programmable (conventional mode) Speaker Belt Clip Numeric Keypad Battery...

  • Page 16: Baseband Section

    Baseband Section Service Manual 3. Baseband Section Power Section 3.1.1 Diagram of Power Control Figure 3-1 Diagram of Power Control 3.1.2 Radio On/Off Figure 3-2 Diagram of Radio On/Off Control The radio-on signal (POWER-SW+) satisfies the equation: POWER-SW+= PWR-SW- | POWER-CTL.

  • Page 17: Power Protection

    Service Manual Baseband Section When the Volume Switch is on, PWR-SW- and POWER-SW+ are at high level, and the radio powers up. After power-on, POWER-CTL goes to high level, and POWER-KEY-DET goes to low level. During power-off, POWER-SW+ is at low level, while POWER-KEY-DET is at high level. The system detects power-off procedure via POWER-KEY-DET and implements the power-off procedure.

  • Page 18: Figure 3-3 Diagram Of Omap5912

    Baseband Section Service Manual Figure 3-3 Diagram of OMAP5912 Figure 3-4 Diagram of Overall Scheme...

  • Page 19: External Memory

    Service Manual Baseband Section 3.2.2 External Memory OMAP5912 provides two types of external memory interfaces: external memory interface slow (EMIFS) and external memory interface fast (EMIFF). OM AP5912 MT48H8M 16LFB4-75 EM IFF EM IFS TV00570002CDGB SDRAM .A[0:12] A[0:12] FLASH.A[24:1] A[23:0] D[0:15] SDRAM.D[0:15] FLASH.A[15:0]...

  • Page 20: Clock

    Baseband Section Service Manual 3.2.3 Clock Option board CLK-32K-OUT CLK-OPT 32kHz 19.2MHz U201 OMAP5912 ULPD_PLL_CLK OSC32K_OUT CLK32K_IN 19.2MHz 96MHz X201 APLL OSC32K_IN 32.768KHz 20pF 20pF ULPD ARM_CK OMAP3.2 VSS(Y13) OSC1_OUT X203 CK_REF DSP_CK DPLL1 VCONT OSC1_IN TCXO 19.2MHz TC_CK 19.2MHz MCLK U821 TLV320AIC29...

  • Page 21: Reset Signal

    Service Manual Baseband Section 3.2.4 Reset signal Figure 3-7 Diagram of Reset Signal 3.2.5 OMAP5912 has a SPI, which has four chip-selects for connecting four external SPI components. The SPI signals available are SPI.DOUT, SPI.DIN, SPI.CLK and SPI.CS. The system uses SPIF.CS2 to select the IF processor AD9864, to configure register of AD9864.

  • Page 22: Usb

    Baseband Section Service Manual Figure 3-9 Diagram of MCBSP Connection 3.2.7 OMAP5912 provides 3 USB interfaces. One interface integrates a USB transceiver, which is connected to the accessory jack and is used for program downloading and data application. Figure 3-10 Diagram of USB Interface...

  • Page 23: Uart

    Service Manual Baseband Section 3.2.8 UART OMAP5912 has three UART interfaces (UART1, UART2 and UART3), and supports hardware flow control. The maximum communication rate is 1.5Mbps. The connection of UART is shown below. UART1 is connected with the accessory jack, and is used for updating and programming. UART2 is for GPS, and UART3 is for the option board.

  • Page 24: Microwire

    Baseband Section Service Manual 3.2.10 MICROWIRE OMAP5912 provides a MICROWIRE. The four chip select signals can drive four external components. MICROWIRE is used to configure the audio codec and read the value of its register. It uses the chip select signal 3. The connection is shown below. Figure 3-13 Diagram of MICROWIRE Connection 3.2.11 MCSI1...

  • Page 25: Diagram Of Signal Flow

    Service Manual Baseband Section signal processing). AD9864 converts and processes the RF IF signal, and sends the undemodulated serial digital I/Q signal to the DSP for processing. Then DAC5614 converts the digital signal output by DSP to analog signal. Figure 3-15 Diagram of Audio Section 3.3.2 Diagram of Signal Flow The microphone converts the audio signal into electrical signal, which is amplified by PGA of the codec...

  • Page 26: Audio Amplifier

    Baseband Section Service Manual UWIRE.SCLK UWIRE.CS3 UWIRE.SDO UWIRE.SDI OMAP5912 RF TX MCLK TLV5604 gain: Internal/ 22dB external MIC input MCBSP1.DR MCBSP2.DX MCBSP1.FSX MCBSP1.DX DOUTA MCBSP2.DR MCBSP1.CLKX RF RX TDA8547TS AD9864 Audio is processed Gain: 31dB via DSP. Internal/external speaker output Figure 3-16 Diagram of Audio Signal Flow 3.3.3 Audio Amplifier...

  • Page 27: Troubleshooting Flow Chart

    Service Manual Baseband Section Troubleshooting Flow Chart Control circuit check Normal The RF circuit is driven The control circuit works power-on display and normally?[2] normally. indication?[1] Check the RF circuit (U603, U604 and U605) and control circuit. LCD and LED work Replace LCD and normally? LED.

  • Page 28: Pcb Difference

    Baseband Section Service Manual PCB Difference For UHF1 PCB, Version H and Version K are made on the basis of Version F.  The following changes are made for Version H: Remove the board border and the small board.  C802 is compatible with 1206 and 0805.

  • Page 29: Gps Circuit

    Service Manual GPS Circuit 4. GPS Circuit Circuit Description Power control UART OMAP module REB-1315LPx TX/RX Figure 4-1 Diagram of GPS Circuit The GPS function is realized via REB-1315LPx. The GPS circuit integrates a baseband processor, a LNA and a SAW. The GPS function is realized via the following steps: Step 1 The 1575.42MHz GPS signal is received by the antenna, and then goes to HPF to remove the in-band signals used for transmission and reception.

  • Page 30: Schematic Diagram

    GPS Circuit Service Manual Schematic Diagram Figure 4-2 Schematic Diagram Parts List Ref. No. Print No. Part No. Description C512 3101054710010 470P C513 3101055600000 C514 3101051210000 120P C515 3101051050000 C516 3101051590070 1.5P C517 3101051800010 C518 3101051590000 2.7P C519 3199050758000 C520 3101050100030 C521 3101051210000...
  • Page 31 Service Manual GPS Circuit Ref. No. Print No. Part No. Description C522 3101051040060 0.1U C523 3101051040060 0.1UF C524 3101055600000 C525 3101051040060 0.1UF C526 3101051050000 C527 3101050200010 1.2P C529 3101053000010 Chip capacitor 30P L501 3297106339000 3.3nH L502 322150660108 Bead L503 3297106339000 3.3nH L504 3297106339000...
  • Page 32 GPS Circuit Service Manual Ref. No. Print No. Part No. Description U501 3609999000300 GPS low-noise amplifier U502 1615000001720 GPS module Z501 3804157560000 GPS filter...

  • Page 33: Troubleshooting Flow Chart

    Service Manual GPS Circuit Troubleshooting Flow Chart GPS circuit check The GPS module The power supply for GPS is Replace the GPS outputs normally?[1] normal?[2] module. Check the power supply. The channel from GPS to Replace abnormal RC and OAMP is normal? check OMAP.

  • Page 34: Tuning Description

    Tuning Description Service Manual 5. Tuning Description For details about tuning, please refer to the help file of the tuning software supplied by the Company.

  • Page 35: Interface Definition

    Service Manual Interface Definition 6. Interface Definition J1601: 50-Pin Interface Pin No. Name Function Valid Level AF-CODEC-TO-50PIN Analog audio signal output/input 2, 5, 49 Power supply: ground (analog) AF-50PIN-TO-CODEC Analog audio signal output/input EXT-MIC+ External MIC interface EXT-MIC- IO5-OPT IO4-OPT IO3-OPT GPIO pin of the option board IO2-OPT...
  • Page 36 Interface Definition Service Manual Pin No. Name Function Valid Level KB-C3 KB-C2 KB-C1 KB-C0 EXT-PTT External PTT detection SEL1-Accessory SEL2-Accessory Accessory identifier SEL3-Accessory UART1-RX-OPT/PS UART1 UART1-TX-OPT/PS UART3-TX-OPT UART3-RX-OPT UART3 UART3-CTS/IO30-OPT UART3-RTS/IO29-OPT MCBSP3-FSX-OPT MCBSP3-DX-OPT MCBSP3 MCBSP3-WCLK-OPT MCBSP3-DR-OPT IIC-SDA-Acce for Version K of UHF1/UHF2/UHF3, Version F of IIC-SCL-Acce/CLK-32K-OUT UHF5 and Version B of VHF...

  • Page 37: Table 6-1 Definition Of 50-Pin Interface

    Service Manual Interface Definition Pin No. Name Function Valid Level Power supply for accessory or EXT-BAT+ option board IN-SPK- Internal speaker IN-SPK+ EXT-SPK- External speaker EXT-SPK+ Table 6-1 Definition of 50-Pin Interface J311: 30-Pin LCD Interface Pin No. Name Function Valid Level 1, 26 Ground (digital)

  • Page 38: Table 6-3 Definition Of Channel Board Interface

    Interface Definition Service Manual Pin No. Name Function Valid Level Emergency Emergency Channel select Channel select Volume adjust Channel select Channel select LED1 Red LED enable LED2 Green LED enable INT-MIC+780 Microphone+ INT-MIC-780 Microphone- NC/GND Version UHF1/UHF2/UHF3, Version F of UHF5 and Version B of VHF GND for Version F/H of UHF1 PWR-SW-...
  • Page 39 Service Manual Interface Definition Valid Pin No. Name Function Level IO2-OPT IO3-OPT IO4-OPT IO5-OPT UART3-TX-OPT UART3-RX-OPT UART3 UART3-CTS/IO30-OPT UART3-CTS/IO30-OPT IIC-SDA-Acce Version UHF1/UHF2/UHF3, Version F of UHF5 and Version B of VHF IIC-SDA-Acce/CLK-32K-OUT CLK-32K-OUT for Version F/H of UHF1 IIC-SCL-Acce Version UHF1/UHF2/UHF3, Version F of UHF5 and Version B of VHF IIC-SCL-Acce/CLK-OPT...

  • Page 40: Table 6-4 Definition Of 20-Pin Option Board Interface

    Interface Definition Service Manual Table 6-4 Definition of 20-Pin Option Board Interface 16-Pin Accessory Interface Pin No. Name Function Valid Level Ground (analog & digital) SPK- External speaker- SEL1-Accessory Accessory identifier 1 SEL2-Accessory Accessory identifier 2 Emergency Emergency SPK+ External speaker+ USB+ / RTS USB+ / RTS USB- / CTS...

  • Page 41: Table 6-6 Definition Of Accessory Identifiers

    Service Manual Interface Definition OPT_SEL1 OPT_SEL2 OPT_SEL3 Definition For connecting MODEM For connecting remote speaker microphones Programming cable (serial port)/ USB slave mode for the radio No accessory Table 6-6 Definition of Accessory Identifiers...

  • Page 42: Uhf1 (400-470Mhz) Information

    UHF1 (400-470MHz) Information Service Manual 7. UHF1 (400-470MHz) Information Transmitter Circuit The transmitter circuit is mainly composed of:  RF power amplifier circuit  Low-pass filter circuit (for suppressing harmonics)  Auto power control circuit (APC) (including temperature detection circuit) Figure 7-1 Diagram of Transmitter Circuit 7.1.1 RF Power Amplifier Circuit...

  • Page 43: Low-Pass Filter Circuit

    Service Manual UHF1 (400-470MHz) Information Step 4 After processed by multiple amplifiers, the signal is processed by a microstrip matcher to complete output impedance matching, so as to reduce output power loss due to impedance mismatch. Step 5 The signal passes through the TX/RX switch and goes to the low-pass filter. 7.1.2 Low-pass Filter Circuit The low-pass filter is a high-order Chebyshev filter composed of lumped-parameter inductors and...

  • Page 44: Receiver Front-End

    UHF1 (400-470MHz) Information Service Manual Figure 7-2 Diagram of Receiver Circuit 7.2.1 Receiver Front-end The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled via APC/TV1 level, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (Q9001).

  • Page 45: Receiver Back-End

    Service Manual UHF1 (400-470MHz) Information 7.2.2 Receiver Back-end Figure 7-3 Diagram of IF Processor The first IF signal (73.35MHz) output by the IF amplifier goes into AD9864 (U401) via Pin 47, where the signal is converted to the second IF signal (2.25MHz). Then the signal is converted to digital signal via ADC sampling, and output via the SSI interface.

  • Page 46: Working Principle Of Pll

    UHF1 (400-470MHz) Information Service Manual Figure 7-4 Diagram of FGU 7.3.1 Working Principle of PLL The 19.2MHz frequency generated by the reference crystal oscillator goes to PLL for division, generating the reference frequency (i.e. step frequency f1). Meanwhile, the frequency generated by VCO generates another frequency (f2) through the frequency divider in PLL.

  • Page 47: Working Principle Of Vco

    Service Manual UHF1 (400-470MHz) Information 7.3.2 Working Principle of VCO VCO employs Colpitts oscillator circuit (the RX oscillator circuit is composed of D102, D103, D106, D107 and L112; the TX oscillator circuit is composed of D108, D109, D110, D101 and L117). It obtains different output frequencies by changing the varactor's control voltage (i.e.

  • Page 48: Pcb View

    7.4 PCB View PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Top Layer...
  • Page 49 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Bottom Layer...
  • Page 50 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Top Layer...
  • Page 51 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Bottom Layer...
  • Page 52 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Top Layer...
  • Page 53 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Bottom Layer...
  • Page 54 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Top Layer...
  • Page 55 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Bottom Layer...

  • Page 56: Block Diagram

    7.5 Block Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (RF Section) Microstrip Low-pass Filter Tx/Rx Switch Pre-Drive2 Drive-stage Final-stage Pi Attenuator Pre-driver1 Matcher TV1/APC MOD1 Tx_VCO RX/TX RX/TX APC module VCO buffer amplifier TV1/APC 4CH DAC Rx_VCO Low-Noise Amp BATT+ Frequency Synthesizer module...
  • Page 57 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Baseband Section)
  • Page 58 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Power Section) 1.6A/7.4V/5W RF PA 7.4V/1.6A RQA0002DNS 230mA/7.4V/Po=0.9W 1 /2 2.2V-18V 210mA/Po=0.89W/7.4V AF PA (TDA8547TS) 21mA/5VFGU TX:53mA/RX:29mA RX/TX 5VFGU 125uA-1000uA/5VFGU 5VA-RTC/ LDO: 5V VCCcp_main: Charge pump supply, 2.7V-5V(3 to 5 V); 150mA; VCO 3V3DRF VCCdigital: Digital supply, 2.7V-3V-3.3V;...

  • Page 59: Schematic Diagram

    7.6 Schematic Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Transmitter/Receiver) PD780 UHF Schematic Diagram(TX/RX Circuit) C9002 C9002 L9002 L9002 100P 100P C9034 C9034 C9003 C9003 C9004 C9004 C9005 C9005 ANT1 ANT1 R9029 R9029 470P 470P C9009 C9009 TP9002 TP9002 C9020 C9020 C9012 C9012...
  • Page 60 PD780 UHF Schematic Diagram(CODEC Circuit) PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (CODEC) 1V8D C834 C834 R829 R829 470K 470K AF-CODEC-IN TONE-CODEC 3 L821 L821 BLM15PD121SN1 BLM15PD121SN1 C837 C837 0.01u 0.01u C840 C840 C821 C821 R838 R838 0.22u 0.22u AF 50PIN to CODEC C846...
  • Page 61 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Audio Amplifier) PD780 UHF Schematic Diagram(AF Amplifier Circuit) BAT++ L802 L802 BLM18PG181SN1 BLM18PG181SN1 C803 C803 C804 C804 C802 C802 22u/10V 22u/10V 0.22u 0.22u 270P 270P L803 L803 EXT-SPK- R801 R801 R802 R802 C805 C805 R803 R803 C806...
  • Page 62 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (DAC) PD780 UHF Schematic Diagram(DAC Circuit) 5VRT R712 R712 BLM15PD121SN1 BLM15PD121SN1 C705 C705 C706 C706 R709 R709 1000P 1000P 100k 100k C712 C712 R713 R713 R710 R710 100k 100k C703 C703 C704 C704 470P 470P 470p 470p...
  • Page 63 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power) PD780 UHF Schematic Diagram(Power Circuit) R607 100 R607 100 PWR-SW+ 5VFGU P607 P607 BAT++ 3V3ARF U603 U603 BAT+ L602 L602 J601 J601 L604 L604 L603 L603 RP102N331B RP102N331B F601 F601 BLM18PG181SN1 BLM18PG181SN1 R602 R602 R604 R604...
  • Page 64 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (AD9864) PD780 UHF Schematic Diagram(AD9864 Circuit) TP402 TP402 TP403 TP403 L403 BLM15PD121SN1 L403 BLM15PD121SN1 L402 L402 TP401 TP401 C448 C448 2FLO 2FLO 270n 270n C420 C420 C457 C457 Q402 Q402 0.01u 0.01u TP404 TP404 L412 BLM15PD121SN1 L412 BLM15PD121SN1...
  • Page 65 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Internal Interface) PD780 UHF Schematic Diagram(INT Interface Circuit) 3V3D R314 R314 R315 R315 3.3K 3.3K D303 D303 D305 D305 3.3K 3.3K EXT-MIC+ AF CODEC TO 50PIN U310 U310 3V3D AF 50PIN to CODEC EXT-MIC- D304 D304 D306...
  • Page 66 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP SI) PD780 UHF Schematic Diagram(OMAP SI Circuit) 3V3D R219 10K R219 10K SYNCB-IF 3V3D RN256 RN256 R256 R256 10K*4 10K*4 RN257 RN257 KB-R0 KP.R0/MPUIO8 KB-R1 SPI-CS2-IF SPIF.CS2/MPUIO4/uWIRE.CS2/LED2 KP.R1/MPUIO9 KB-R2 SPI-SCK-IF SPIF.SCK/MPUIO1 KP.R2/MPUIO10 KB-R3 SPI-DOUT-IF SPIF.DOUT/GPIO46/uWIRE.SDO KP.R3/MPUIO13...
  • Page 67 PD780 UHF Schematic Diagram(OMAP MEM Circuit) PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP MEN) M-A[1..24] U244 U244 SDRAM.A[0..12] U201A U201A SDRAM.A0 M-A1 M-A1 SDRAM.A0 FLASH.A1 1V8D SDRAM.A1 M-A2 M-A2 /CS2-LCD SDRAM.A1 FLASH.A2 SDRAM.A2 M-A3 /CS2-LCD M-A3 M-D0 R243 0 R243 0 SDRAM.A2 FLASH.A3 M-A1 SDRAM.A3...
  • Page 68 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP IO) PD780 UHF Schematic Diagram(OMAP IO Circuit) POWER-KEY-DET 10 GPIO5/FLASH.CS2U RESET-CODEC GPIO34/LCD.P13 GPIO7/UART2.RCV POWER-CTL 10 GPIO32/LCD.P11 GPIO8/TRST IO to Accessory(TD TEST) SEL1-ADC GPIO31/LCD.P10 R212 100 R212 100 DISCHARGE-SW-TX 14 GPIO16/FLASH.CS1U SEL2-ADC GPIO30/LCD.P9 EXT-PWR GPIO23/MCLKREQ DAV-CODEC GPIO29/LCD.P8 Acce-INT1 GPIO25/MCSI2.DOUT...
  • Page 69 PD780 UHF Schematic Diagram(OMAP CORE Circuit) PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE) X201 X201 TP268 TP268 SSP-T7F 12.5pF 20ppm SEIKO SSP-T7F 12.5pF 20ppm SEIKO C205 C205 CLK-OMAP/IF C206 C206 X203 X203 C204 C204 C202 C202 1000P 1000P R213 R213 C203 C203...
  • Page 70 PD780 UHF Schematic Diagram(FGU Circuit) PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (FGU) 5VFGU C104 C104 470P 470P C102 C102 C103 C103 TP102 TP102 L101 L101 L104 L104 L105 L105 VCOFB VCOFB C106 C106 R102 R102 C105 C105 12nH(绕线) 12nH(绕线) 12nH(绕线) 12nH(绕线) 0.1u 0.1u...
  • Page 71 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (External Interface) PD780 UHF Schematic Diagram(EXT Interface Circuit) J302 J302 R309 R309 USB-D- 5,7 PTT-IO USB-D+ 5,7 S302 S302 C307 C307 C325 C325 270p 270p 270p 270p nc-CON6 nc-CON6 J304 J304 NC*JTAG NC*JTAG RN302 100*4 RN302 100*4...
  • Page 72 PD780 UHF Schematic Diagram(SW Board Circuit) PD70X/PD70XG/HD705/HD705G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003...
  • Page 73 PD780 UHF Schematic Diagram(SW Board Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003 D1005 D1005 D1007...
  • Page 74 PD78X/PD78XG/HD785/HD785G Schematic Diagram (Keyboard) PD780 UHF Schematic Diagram(Keyboard Circuit) S1701 S1701 S1702 S1702 S1703 S1703 S1704 S1704 S1705 S1705 Cancel KB-R4 S1706 S1706 S1707 S1707 S1708 S1708 S1709 S1709 S1710 S1710 DOWN KB-R3 S1711 S1711 S1712 S1712 S1713 S1713 S1714 S1714 S1715 S1715...

  • Page 75: Parts List

    Service Manual UHF1 (400-470MHz) Information Parts List PD70X/ PD70XG/ PD78X/ PD78XG/ HD705/ HD705G/ HD785/ HD785G Main Board Ref. No. Print No. Part No. Description ANT1 6201847000000 Antenna spring plate C101 3101054710010 470PF C102 3101050300000 C103 3101050300000 C104 3101054710010 470PF C105 3101051040060 0.1UF...
  • Page 76 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C120 3101054710010 470PF C121 3101051040060 0.1UF C122 3101061590010 1.5PF C123 3101060600010 C124 3101050600010 C125 3101065690000 5.6PF C126 3101051040060 0.1UF C127 3101054710010 470PF C128 3101060600010 C129 3101063690000 3.6PF C130 3101062700010 27PF C132...
  • Page 77 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C143 3101060100010 C144 3101060300010 C145 3101060500010 C146 3101060500010 C147 3101060300010 C148 3101062200010 22PF C149 3101061590010 1.5PF C151 3101054700010 47PF C152 3101064590010 4.5PF C153 3101061300000 13PF C154 3101051050000 C156 3101051020010 1000PF C157...
  • Page 78 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C166 3101051040060 0.1UF C167 3101051040060 0.1UF C168 3101051010030 100PF C169 3101051040060 0.1UF C170 3101051010030 100PF C172 3101051020010 1000PF C173 3101051010030 100PF C174 3101051030020 0.01UF C175 3101052710000 270PF C176 3101053310030 330PF C177...
  • Page 79 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C204 3101052000020 20PF C206 3101051020010 1000PF C207 3101052710000 270PF C208 3101053310030 330PF C209 3101051520000 1500PF C210 3101062240000 0.22UF C212 3101052240010 0.22UF C213 3101051520000 1500PF C214 3101052710000 270PF C215 3101051030020 0.01UF C216...
  • Page 80 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C228 3101052710000 270PF C229 3101051050000 C230 3101052240010 0.22UF C231 3101051520000 1500PF C232 3101052710000 270PF C234 3101052240010 0.22UF C235 3101051520000 1500PF C236 3101051050000 C242 3101052230000 0.022UF C243 3101052710000 270PF C244 3101051520000 1500PF...
  • Page 81 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C277 3101051520000 1500PF C280 3101051010030 100PF C281 3101051010030 100PF C282 3101052710000 270PF C283 3101052710000 270PF C284 3101051010030 100PF C286 3101052710000 270PF C287 3101052710000 270PF C288 3101051010030 100PF C289 3101051520000 1500PF C310...
  • Page 82 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C321 3101052710000 270PF C322 3101052710000 270PF C323 3101051050000 C331 3101052710000 270PF C332 3101052710000 270PF C333 3101052710000 270PF C334 3101052710000 270PF C420 3101051200020 12PF C422 3101051040060 0.1UF C423 3101051050000 C425 3101051800010 18PF...
  • Page 83 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C436 3101051030020 0.01UF C437 3101065620010 5600PF C438 3101051010030 100PF C439 3101051010030 100PF C440 3101051030020 0.01UF C441 3101051040060 0.1UF C442 3101061030010 0.01UF C443 3101063900000 39PF C444 3101054710010 470PF C445 3101051040060 0.1UF C446...
  • Page 84 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C458 3101061800000 18PF C459 3101054710010 470PF C460 3101063000010 30PF C461 3101063300000 33PF C462 3101051040060 0.1UF C463 3101072240000 0.22UF C464 3101051040060 0.1UF C465 3101051040060 0.1UF C466 3101051040060 0.1UF C467 3101062250000 2.2UF C468...
  • Page 85 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C518 3101051590000 1.5PF C519 3199050758000 0.75PF C520 3101050100030 C521 3101051210000 120PF C522 3101051040060 0.1UF C523 3101051040060 0.1UF C524 3101055600000 56PF C525 3101051040060 0.1UF C526 3101051050000 C527 3101050200010 C601 3101062250000 2.2UF C602...
  • Page 86 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C612 3101051030020 0.01UF C614 3101055690020 5.6PF C615 3101051040060 0.1UF C616 3101051010030 100PF C617 3101051040060 0.1UF C618 3101051040060 0.1UF C619 3101061030010 0.01UF C620 3101051010030 100PF C621 C622 3101051040060 0.1UF C623 3101061050020 C624...
  • Page 87 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C639 3101051040060 0.1UF C640 3101062240000 0.22UF C641 3101062250000 2.2UF C642 3101051040060 0.1UF C644 3101052000020 20PF C645 3101052210010 220PF C646 3110061050000 C647 3101051040060 0.1UF C648 3101061050020 C649 3101062250000 2.2UF C650 3101051040060 0.1UF...
  • Page 88 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C666 3101051030020 0.01UF C667 3110061050000 C668 3101051040060 0.1UF C669 3101061050020 C670 3101062250000 2.2UF C671 3101051040060 0.1UF C672 3101052000020 20PF C674 3101052210010 220PF C675 3101061050020 C676 3101062240000 0.22UF C677 3101061050020 C678 3101062240000...
  • Page 89 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C688 3101051040060 0.1UF C701 3101061050020 C703 3101054710010 470PF C704 3101054710010 470PF C705 3101051020010 1000PF C706 3101051050000 C707 3101051050000 C708 3101051010030 100PF C709 3101052710000 270PF C710 3101051040060 0.1UF C711 3101051050000 C712 3101051050000...
  • Page 90 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C810 3101051040060 0.1UF C811 3101052710000 270PF C812 3101051040060 0.1UF C813 3101053920000 3900PF C814 3101052710000 270PF C816 3101071050020 C817 3101051040060 0.1UF C818 3101052710000 270PF C819 3101051030020 0.01UF C821 3101052240010 0.22UF C822 3101051030020...
  • Page 91 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C834 3101051050000 C835 3101052710000 270PF C836 3101051040060 0.1UF C837 3101051030020 0.01UF C838 3101052710000 270PF C839 3101051040060 0.1UF C840 3101051050000 C841 3101051520000 1500PF C842 3101051010030 100PF C843 3101051040060 0.1UF C845 3101052710000 270PF...
  • Page 92 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C858 3101051520000 1500PF C9001 3101051020010 1000PF C9002 3101051010030 100PF C9003 3101060100010 C9004 3101060200010 C9007 3101060700020 C9009 3101060400010 C9011 3101061010010 100PF C9013 3101064710000 470PF C9014 3101050900000 C9015 3101060800010 C9018 3101054710010 470PF C9019...
  • Page 93 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C9029 3101054710010 470PF C9030 3101062490000 2.4PF C9031 3101060900010 C9032 3101050800000 C9033 3101054710010 470PF C9034 3101054710010 470PF C9035 3101052200010 22PF C9037 3101054710010 470PF C9038 3101051040060 0.1UF C9039 3101054710010 470PF C9041 3101051050000 C9042...
  • Page 94 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C9057 3101051040060 0.1UF C9059 3101051020010 1000PF C9060 3101061020000 1000PF C9061 3101051020010 1000PF C9063 3101051020010 1000PF C9064 3101051020010 1000PF C9065 3101051520000 1500PF C9066 3101051030020 0.01UF C9067 3101051020010 1000PF C9069 3101054710010 470PF C9071...
  • Page 95 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description C9089 3101051020010 1000PF C9090 3101051030020 0.01UF C9091 3101051040060 0.1UF C9092 3101051040060 0.1UF C9093 3101051020010 1000PF C9095 3101051050000 C9096 3101054710010 470PF C9097 3101051040060 0.1UF C9098 3101054710010 470PF C9099 3101051000020 10PF C9100 3101052790000...
  • Page 96 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description C9113 3101050900000 C9114 3001055620000 5.6KΩ C9115 3101050800000 C9116 3101053690000 3.6PF C9117 3101050600010 C9118 3101052700000 27PF C9120 3101051200020 12PF C9121 3101051020010 1000PF C9122 3101052700000 27PF C9124 3101050800000 C9128 3101050400010 C9129 3101050800000 C9131...
  • Page 97 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description D101 3304010100220 Varactor D102 3304010100220 Varactor D103 3304010100220 Varactor D104 3303020100080 Switching diode D105 3303020100080 Switching diode D106 3304010100220 Varactor D107 3304010100220 Varactor D108 3304010100220 Varactor D109 3304010100220 Varactor D110 3304010100220...
  • Page 98 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description D318 3399040600010 ESD protection diode D401 3304060300050 Varactor D402 3304010100220 Varactor D601 3399990000110 Diode D602 3399040600020 ESD protection diode D604 3303030100010 Switching diode D9001 3304060300050 Varactor D9002 3303030800040 Switching diode D9005 3303020100080...
  • Page 99 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description J313 5202002100200 Board-to-wire connector J601 5205003100020 Battery connector J821 5201016000010 Board-to-board connector L101 3210306330000 33nH L102 3212106120000 12nH L103 3212106120000 12nH L104 3290106120000 12nH L105 3290106120000 12nH L106 3210106391000 390nH L107...
  • Page 100 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description L119 3210106391000 390nH L120 3221505121010 Bead L121 3221505121010 Bead L122 3221505121010 Bead L123 3221505121010 Bead L124 3210406471000 470nH L201 3210406471000 470nH L202 3221506181000 Bead L203 3212206471000 470nH L204 3221506181000 Bead L302...
  • Page 101 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description L408 3210407472000 4.7uH L409 3210406471000 470nH L410 3221506601000 Bead L411 3213212332000 3.3uH L412 3221505121010 Bead L413 3213306682000 6.8uH L501 3297106339000 3.3nH L502 3221506601080 Bead L503 3297106339000 3.3nH L504 3297106339000 3.3nH L505...
  • Page 102 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description L607 3290299220000 Inductor L609 3221506181000 Bead L610 3217099153000 15uH L611 3221506181000 Bead L612 3221506181000 Bead L613 3290299220000 Inductor L614 3217099153000 15uH L615 3290299220000 Inductor L616 3290299220000 Inductor L702 3221505121010 Bead L801...
  • Page 103 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description L9001 3210106820000 82nH L9002 3210306820000 82nH L9003 3233099185900 18.5nH L9004 3233099185900 18.5nH L9005 3233099185900 18.5nH L9006 3215006100010 10nH L9007 3215006100010 10nH L9008 3233099470000 47nH L9009 3210306220000 22nH L9010 3210306220000 22nH L9011...
  • Page 104 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description L9025 3210106390000 39nH L9026 3210106101000 100nH L9027 3213306821000 0.82uH L9028 3210306220000 22nH L9030 3210306339000 3.3nH L9032 3210406471000 470nH L9033 3237199170000 17nH L9034 3101060400010 L9035 3237199170000 17nH L9036 3237199170000 17nH L9037 3237199170000...
  • Page 105 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description Q310 3511990000010 N-MOSFET Q312 3403008000010 Transistor Q313 3511990000010 N-MOSFET Q401 3403003000060 NPN transistor Q402 3499000000150 Transistor Q403 3408002000000 NPN transistor Q603 3414001000040 NPN transistor Q604 3503020000030 N-MOSFET Q605 3410001000020 PNP transistor Q606...
  • Page 106 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description Q9017 3404006000000 NPN transistor Q9018 3404006000000 NPN transistor Q9019 3403999000000 Transistor Q9020 3403999000000 Transistor R101 3001055600000 56Ω R102 3001051030000 10KΩ R103 3001051000000 10Ω R104 3001051020010 1KΩ R105 3001051030000 10KΩ...
  • Page 107 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R118 3001058220000 8.2KΩ R119 3001051010000 100Ω R120 3001051030050 10KΩ R121 3001051010000 100Ω R122 3001051030000 10KΩ R123 3001051040000 100KΩ R124 3001052720010 2.7KΩ R125 3001052720010 2.7KΩ R127 3001051030050 10KΩ R128 3001052720010 2.7KΩ...
  • Page 108 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description R141 3001050000000 0Ω R142 3001051030000 10KΩ R143 3001053320000 3.3KΩ R144 3001053320000 3.3KΩ R145 3001053330000 33KΩ R146 3001053330000 33KΩ R203 3001051000000 10Ω R204 3001050000000 0Ω R205 3001051010000 100Ω R206 3001051000000 10Ω...
  • Page 109 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R219 3001061030010 10KΩ R220 3001061010000 100Ω R222 3001061010000 100Ω R241 3001051030000 10KΩ R242 3001061010000 100Ω R243 3001050000000 0Ω R244 3001061010000 100Ω R246 3001051030000 10KΩ R249 3001051000000 10Ω R250 3001051030000 10KΩ...
  • Page 110 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description R314 3001053320000 3.3KΩ R315 3001053320000 3.3KΩ R316 3001051030000 10KΩ R317 3001051030000 10KΩ R319 3001050000000 0Ω R321 3099063018000 3.01Ω R322 3001052220000 2.2KΩ R323 3001052220000 2.2KΩ R324 3001053300000 33Ω R325 3001053300000 33Ω...
  • Page 111 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R412 3001051040000 100KΩ R413 3001051820000 1.8KΩ R414 3001052720000 2.7KΩ R415 3001061030010 10KΩ R416 3001058210000 820Ω R501 3001054710000 470Ω R502 3001053310010 330Ω R503 3001051010000 100Ω R504 3001051030050 10KΩ R601 3001051040000 100KΩ...
  • Page 112 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description R621 3001051040000 100KΩ R622 3221506181000 Bead R623 3001051540000 150KΩ R624 3099063018000 3.01Ω R627 3001054730010 47KΩ R628 3001054730010 47KΩ R629 3001054720000 4.7KΩ R630 3001054730010 47KΩ R631 3001051530000 15KΩ R632 3001051020010 1KΩ...
  • Page 113 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R802 3001053340010 330KΩ R803 3001053340010 330KΩ R804 3001051030000 10KΩ R805 3001051030000 10KΩ R806 3001051000000 10Ω R807 3001052030000 20KΩ R820 3001052020020 2KΩ R821 3001051010000 100Ω R822 3001050000000 0Ω R823 3001051030050 10KΩ...
  • Page 114 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description R841 3001051030000 10KΩ R9001 3001052710010 270Ω R9002 3001054730000 47KΩ R9003 3001052710010 270Ω R9004 3233099449000 4.4nH R9005 3001055690000 5.6Ω R9006 3001051030000 10KΩ R9007 3001058200000 82Ω R9008 3001051520000 1.5KΩ R9009 3001053300000 33Ω...
  • Page 115 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R9025 3001052710010 270Ω R9027 3001058220000 8.2KΩ R9028 3001052710010 270Ω R9029 3001053310000 330Ω R9033 3001051020000 1KΩ R9036 3001051030000 10KΩ R9038 3001051020000 1KΩ R9039 3001051010000 100Ω R9041 3001054720000 4.7KΩ R9043 3001053320000 3.3KΩ...
  • Page 116 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description R9063 3001051030000 10KΩ R9066 3001051520000 1.5KΩ R9067 3001056820000 6.8KΩ R9068 3001053320000 3.3KΩ R9071 3001053310010 330Ω R9072 3001051040000 100KΩ R9073 3001051040000 100KΩ R9074 3001051030000 10KΩ R9075 3001055100020 51Ω R9076 3001051040000 100KΩ...
  • Page 117 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description R9096 3001053320000 3.3KΩ R9097 3001053320000 3.3KΩ R9098 3001053320000 3.3KΩ R9099 3217105010000 RN242 3005051030010 10KΩ RN243 3005051030010 10KΩ RN255 3005060000000 0Ω RN256 3005051030010 10KΩ RN257 3005061010000 100Ω RN258 3005061010000 100Ω...
  • Page 118 UHF1 (400-470MHz) Information Service Manual Ref. No. Print No. Part No. Description U242 3612044000010 Mobile-SDRAM U244 3612002000020 NOR-FLASH+PSRAM U312 3805000000030 EMI filter U313 3805000000030 EMI filter U314 3805000000030 EMI filter U315 3805000000030 EMI filter U316 3805000000030 EMI filter U317 3805000000030 EMI filter U318 3805000000030...
  • Page 119 Service Manual UHF1 (400-470MHz) Information Ref. No. Print No. Part No. Description U607 3609010000170 Reset IC U608 3608006000000 Power management IC U609 3608006000000 Power management IC U610 3608006000030 Power management IC U611 3608011000050 Power management IC U612 3608006000000 Power management IC U701 3606010000010 D/A converter...
  • Page 120 Shielding can for TX VCO 6201865000000 Shielding can for crystal oscillator 6201915000000 Shielding can for antenna spring plate 6201935000000 Shielding can for switching power Main board PD70X/ PD70XG/ HD705/ HD705G Channel Board Ref. No. Part No. Description R1002 3001051210010 120Ω C1001...
  • Page 121 Service Manual UHF1 (400-470MHz) Information Ref. No. Part No. Description D1006 3310040000000 ESD protection diode D1007 3310040000000 ESD protection diode D1008 3310040000000 ESD protection diode D1011 3310040000000 ESD protection diode D1014 3310040000000 ESD protection diode D1009 3399040600020 ESD protection diode D1013 3399040600020 ESD protection diode...
  • Page 122 UHF1 (400-470MHz) Information Service Manual Ref. No. Part No. Description C1003 3101052710000 270PF C1004 3101052710000 270PF C1005 3101052710000 270PF C1006 3101052710000 270PF C1007 3101052710000 270PF C1010 3101052710000 270PF C1011 3101052710000 270PF C1012 3101052710000 270PF D1001 3310040000000 ESD protection diode D1003 3310040000000 ESD protection diode D1004...
  • Page 123 Service Manual UHF1 (400-470MHz) Information Ref. No. Part No. Description 41PD7802006C0 PCB channel board R1001 3001056810000 680Ω C1015 3101051040060 0.1UF C1016 3101051040060 0.1UF L1001 3221506181000 Bead U1002 3608006000030 Power management IC PD78X/ PD78XG/ HD785/ HD785G Keyboard Ref. No. Part No. Description 3001051010000 100Ω...
  • Page 124 UHF1 (400-470MHz) Information Service Manual Ref. No. Part No. Description 3307990000260 LED 3310040000010 ESD protection diode 3310040000010 ESD protection diode 5201016000010 Board-to-board connector...

  • Page 125: Troubleshooting Flow Chart

    Service Manual UHF1 (400-470MHz) Information Troubleshooting Flow Chart Receiver Circuit No receive R5V output is normal?[1] 5VRT output is normal?[2] Check Q9019. The static working point of Q9001 is Check Q9001. normal?[3] The static Check Q9017 working point of Q9017/Q9018 and Q9018.
  • Page 126 UHF1 (400-470MHz) Information Service Manual Description of Normal Situations: [1] Output voltage at Q9019 PIN3: about 4.95V. [2] Output voltage at U605 PIN4 or input voltage at Q9019 PIN4: about 5V. [3] Vbe: about 0.74V; Vce: about 2.5V (in the case of no signal reception). [4] For Q9018, Vbe: about 0.76V;...
  • Page 127 Service Manual UHF1 (400-470MHz) Information Transmitter Circuit...
  • Page 128 UHF1 (400-470MHz) Information Service Manual Description of Normal Situations: [1] Voltage of the power supply: about 7.4V. [2] For low power, APC-OUT: 1.8-2.1V; for high power, APC-OUT: 2.4-2.8V. [3] For low power, APC-IN: 1-1.3V; for high power, APC-IN: 1.8-2.1V. [4] PS-APC: about 3.3V. [5] TX5V: about 5V;...
  • Page 129 Service Manual UHF1 (400-470MHz) Information FGU check Check the power 5VFGU, 3V3ARF, supply circuit. 3V3DRF are normal? Q106 and Q107 Q104 and Q108 VCO oscillates? Replace Q104 are normal?[1] are normal?[2] and Q108. Check Q104, Q108 and Replace Q106 peripheral components. and Q107.
  • Page 130 UHF1 (400-470MHz) Information Service Manual Description of Normal Situations: [1] During transmission, output voltage by Q107 PIN3: about 4V. During reception, output voltage by Q106 PIN3: about 4V. [2] During transmission, voltage at Q108 E: about 1.8V. During reception, voltage at Q104 E: about 1.8V. [3] The CV value varies with frequencies.

  • Page 131: Uhf2 (450-520Mhz) Information

    Service Manual UHF2 (450-520MHz) Information 8. UHF2 (450-520MHz) Information Transmitter Circuit The transmitter circuit is mainly composed of:  RF power amplifier circuit  Low-pass filter circuit (for suppressing harmonics)  Auto power control circuit (APC) (including temperature detection circuit) Figure 8-1 Diagram of Transmitter Circuit 8.1.1 RF Power Amplifier Circuit...

  • Page 132: Low-Pass Filter Circuit

    UHF2 (450-520MHz) Information Service Manual Step 4 After processed by multiple amplifiers, the signal is processed by a microstrip matcher to complete output impedance matching, so as to reduce output power loss due to impedance mismatch. Step 5 The signal passes through the TX/RX switch and goes to the low-pass filter. 8.1.2 Low-pass Filter Circuit The low-pass filter is a high-order Chebyshev filter composed of lumped-parameter inductors and...

  • Page 133: Receiver Front-End

    Service Manual UHF2 (450-520MHz) Information Pi Attenuator Figure 8-2 Diagram of Receiver Circuit 8.2.1 Receiver Front-end The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled via APC/TV1 level, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (Q9001).

  • Page 134: Receiver Back-End

    UHF2 (450-520MHz) Information Service Manual 8.2.2 Receiver Back-end Figure 8-3 Diagram of IF Processor The first IF signal (73.35MHz) output by the IF amplifier goes into AD9864 (U401) via Pin 47, where the signal is converted to the second IF signal (2.25MHz). Then the signal is converted to digital signal via ADC sampling, and output via the SSI interface.

  • Page 135: Working Principle Of Pll

    Service Manual UHF2 (450-520MHz) Information Figure 8-4 Diagram of FGU 8.3.1 Working Principle of PLL The 19.2MHz frequency generated by the reference crystal oscillator goes to PLL for division, generating the reference frequency (i.e. step frequency f1). Meanwhile, the frequency generated by VCO generates another frequency (f2) through the frequency divider in PLL.

  • Page 136: Two-Point Modulation

    UHF2 (450-520MHz) Information Service Manual is composed of the oscillator loop and Q108, to provide carrier for TX signal. 8.3.3 Two-point Modulation In TX mode, the two-point modulation technology is employed, to obtain higher modulation accuracy and lower 4FSK bit error rate. MOD-VCO and MOD-XO send the modulation signal to the modulation end of VCO and the reference crystal oscillator of PLL respectively to modulate TX VCO and the reference crystal oscillator.

  • Page 137: Pcb View

    8.4 PCB View PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Top Layer...
  • Page 138 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Bottom Layer...
  • Page 139 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Top Layer...
  • Page 140 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Bottom Layer...
  • Page 141 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Top Layer...
  • Page 142 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Bottom Layer...
  • Page 143 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Top Layer...
  • Page 144 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Bottom Layer...

  • Page 145: Block Diagram

    8.5 Block Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (RF Section) Microstrip Low-pass Filter Tx/Rx Switch Pre-Drive2 Drive-stage Final-stage Pi Attenuator Pre-driver1 Matcher TV1/APC MOD1 Tx_VCO RX/TX RX/TX APC module VCO buffer amplifier TV1/APC 4CH DAC Rx_VCO Low-Noise Amp BATT+ Frequency Synthesizer module...
  • Page 146 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Baseband Section)
  • Page 147 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Power Section) 1.6A/7.4V/5W RF PA 7.4V/1.6A RQA0002DNS 230mA/7.4V/Po=0.9W 1 /2 2.2V-18V 210mA/Po=0.89W/7.4V AF PA (TDA8547TS) 21mA/5VFGU TX:53mA/RX:29mA RX/TX 5VFGU 125uA-1000uA/5VFGU 5VA-RTC/ LDO: 5V VCCcp_main: Charge pump supply, 2.7V-5V(3 to 5 V); 150mA; VCO 3V3DRF VCCdigital: Digital supply, 2.7V-3V-3.3V;...

  • Page 148: Schematic Diagram

    8.6 Schematic Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Transmitter/Receiver) 5VRT D9011 D9011 DAN222 DAN222 R9019 R9019 4.7K 4.7K C9002 C9002 L9002 L9002 100P 100P 2SA1832 2SA1832 C9054 C9054 C9034 C9034 Q9021 Q9021 R9020 R9020 C9003 C9003 C9004 C9004 C9005 C9005 0.75p 0.75p 1.5p...
  • Page 149 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (CODEC) 1V8D L821 L821 C834 C834 BLM15PD121SN1 BLM15PD121SN1 R829 R829 470K 470K AF-CODEC-IN TONE-CODEC 3 C837 C837 C821 C821 0.01u 0.01u 0.22u 0.22u C840 C840 R838 R838 R821 R821 AF-50PIN-TO-CODEC C846 C846 470P 470P C822 C822 C824...
  • Page 150 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Audio Amplifier) BAT+ L802 L802 BLM18PG181SN1 BLM18PG181SN1 C803 C803 C804 C804 C802 C802 10u/10V 10u/10V 0.22u 0.22u 270P 270P TP801 TP801 L803 L803 IN-SPK- R801 R801 R802 R802 C805 C805 R803 R803 C806 C806 150K 150K 220p...
  • Page 151 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (DAC) 5VRT R712 R712 BLM15AG121SN1 BLM15AG121SN1 C705 C705 C706 C706 R709 R709 1000P 1000P 100k 100k C712 C712 R713 R713 R710 R710 100k 100k C703 C703 C704 C704 470P 470P 470p 470p R701 1K R701 1K MOD-VCO...
  • Page 152 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power) 5VFGU R607 10 R607 10 P607 P607 PWR-SW+ 3V3ARF BAT+ U603 U603 L602 L602 L604 L604 F601 F601 L603 L603 BLM18PG181SN1 BLM18PG181SN1 VOUT 3V3DRF BLM18PG181SN1 BLM18PG181SN1 C611 C611 2.5A-32V 2.5A-32V C606 C606 R631 15K R631 15K...
  • Page 153 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (AD9864) TP402 TP402 TP403 TP403 L403 BLM15AG121SN1 L403 BLM15AG121SN1 L402 L402 TP401 TP401 C448 C448 2FLO 2FLO 270n 270n C420 C420 C457 C457 Q402 Q402 0.01u 0.01u TP404 TP404 R406 R406 L412 BLM15AG121SN1 L412 BLM15AG121SN1 C446 C446...
  • Page 154 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Internal Interface) 3V3D R314 R314 R315 R315 3.3K 3.3K D303 D303 D305 D305 3.3K 3.3K EXT-MIC+ AF-CODEC-TO-50PIN U310 U310 3V3D AF-50PIN-TO-CODEC EXT-MIC- D304 D304 D306 D306 IIC-SCL-Acce DVdd_IO SLC/SPC C311 C311 SDA/SDI/SDO IIC-SDA-Acce 0.1u 0.1u D318 D318...
  • Page 155 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP SI) 3V3D RN256 RN256 R256 R256 10K*4 10K*4 KB-R0 KP.R0/MPUIO8 KB-R1 SPI-CS2-IF SPIF.CS2/MPUIO4/uWIRE.CS2/LED2 KP.R1/MPUIO9 KB-R2 SPI-SCK-IF SPIF.SCK/MPUIO1 KP.R2/MPUIO10 KB-R3 SPI-DOUT-IF SPIF.DOUT/GPIO46/uWIRE.SDO KP.R3/MPUIO13 SPI-DIN-IF KB-R4 SPIF.DIN/GPIO47/uWIRE.SDI KP.R4/MPUIO15 C256 C256 C257 C257 C258 C258 C259 C259 470P 470P...
  • Page 156 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP MEN) M-A[1..24] U244 U244 SDRAM.A[0..12] U201A U201A SDRAM.A0 M-A1 M-A1 SDRAM.A0 FLASH.A1 1V8D SDRAM.A1 M-A2 M-A2 /CS2-LCD SDRAM.A1 FLASH.A2 SDRAM.A2 M-A3 /CS2-LCD M-A3 M-D0 SDRAM.A2 FLASH.A3 M-A1 SDRAM.A3 M-A4 M-A1 M-A4 M-D1 SDRAM.A3 FLASH.A4 SDRAM.A4 M-A5...
  • Page 157 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP IO) GPIO5/FLASH.CS2U POWER-KEY-DET 10 RESET-CODEC GPIO34/LCD.P13 POWER-CTL 10 GPIO7/UART2.RCV SEL-MIC GPIO32/LCD.P11 IO-TD-TEST GPIO8/TRST SEL1-ADC GPIO31/LCD.P10 GPIO16/FLASH.CS1U DISCHARGE-SW-TX 14 SEL2-ADC GPIO30/LCD.P9 EXT-PWR C288 C288 C295 C295 GPIO23/MCLKREQ DAV-CODEC GPIO29/LCD.P8 470P 470P 470P 470P C298 C298 470P 470P Acce-INT1 GPIO25/MCSI2.DOUT...
  • Page 158 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE) C205 C205 C206 C206 X203 X203 X201 X201 1000P 1000P SSP-T7F 12.5pF 20ppm SEIKO SSP-T7F 12.5pF 20ppm SEIKO 改良接地 CLK-OMAP/IF OE/ST OE/ST C202 C202 L201 L201 470n 470n 1000p 1000p C204 C204 C203 C203 C208...
  • Page 159 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (FGU) C102 C102 C103 C103 5VFGU 4.7P 4.7P 4.7P 4.7P C104 C104 470P 470P L101 L101 C105 C105 TP102 TP102 L104 L104 R102 R102 L105 L105 0.1u 0.1u VCOFB VCOFB L102 L102 L103 L103 C106 C106 10nH(绕线) 10nH(绕线)
  • Page 160 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (External Interface) PD780 UHF Schematic Diagram(EXT Interface Circuit) J302 J302 R309 R309 USB-D- 5,7 PTT-IO USB-D+ 5,7 S302 S302 C307 C307 C325 C325 270p 270p 270p 270p nc-CON6 nc-CON6 J304 J304 NC*JTAG NC*JTAG RN302 100*4 RN302 100*4...
  • Page 161 PD780 UHF Schematic Diagram(SW Board Circuit) PD70X/PD70XG/HD705/HD705G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003...
  • Page 162 PD780 UHF Schematic Diagram(SW Board Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003 D1005 D1005 D1007...
  • Page 163 PD78X/PD78XG/HD785/HD785G Schematic Diagram (Keyboard) PD780 UHF Schematic Diagram(Keyboard Circuit) S1701 S1701 S1702 S1702 S1703 S1703 S1704 S1704 S1705 S1705 Cancel KB-R4 S1706 S1706 S1707 S1707 S1708 S1708 S1709 S1709 S1710 S1710 DOWN KB-R3 S1711 S1711 S1712 S1712 S1713 S1713 S1714 S1714 S1715 S1715...

  • Page 164: Parts List

    UHF2 (450-520MHz) Information Service Manual Parts List PD70X/ PD70XG/ PD78X/ PD78XG/ HD705/ HD705G/ HD785/ HD785G Main Board Ref. No. Print No. Part No. Description ANT1 6201847000000 Antenna spring plate C101 3101054710010 470PF C102 3101054790010 4.7PF C103 3101054790010 4.7PF C104 3101054710010...
  • Page 165 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C120 3101054710010 470PF C121 3101051040060 0.1UF C122 3101061590010 1.5PF C123 3101063690000 3.6PF C124 3101050800000 C125 3101060400010 C126 3101051040060 0.1UF C127 3101054710010 470PF C128 3101060400010 C129 3101063690000 3.6PF C130 3101062700010 27PF C132...
  • Page 166 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C143 3101061590010 1.5PF C144 3101064790010 4.7PF C145 3101064790010 4.7PF C146 3101063690000 3.6PF C147 3101060400010 C148 3101062200010 22PF C149 3101060200010 C151 3101054700010 47PF C152 3101060500010 C153 3101061300000 13PF C154 3001052220010 2.2KΩ...
  • Page 167 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C166 3101051040060 0.1UF C167 3101051040060 0.1UF C168 3101051010030 100PF C169 3101051040060 0.1UF C170 3101051010030 100PF C171 3199050758000 0.75PF C172 3101051020010 1000PF C173 3101051010030 100PF C174 3101051030020 0.01UF C175 3101052710000 270PF C176...
  • Page 168 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C204 3101052000020 20PF C206 3101051020010 1000PF C207 3101052710000 270PF C208 3101053310030 330PF C209 3101053920000 3900PF C210 3101062240000 0.22UF C211 3101051020010 1000PF C212 3101052240010 0.22UF C213 3101052240010 0.22UF C214 3101054710010 470PF C215...
  • Page 169 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C228 3101054710010 470PF C229 3101054700010 47PF C230 3101052240010 0.22UF C231 3101053920000 3900PF C232 3101054710010 470PF C233 3101053920000 3900PF C234 3101052240010 0.22UF C236 3101051050000 C237 3101054710010 470PF C238 3101052240010 0.22UF C239 3101053920000...
  • Page 170 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C251 3101051030020 0.01UF C255 3101054710010 470PF C256 3101054710010 470PF C257 3101054710010 470PF C258 3101054710010 470PF C259 3101054710010 470PF C260 3101055610000 560PF C261 3101055610000 560PF C262 3101052710000 270PF C263 3101054710010 470PF C264...
  • Page 171 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C276 3101051520000 1500PF C277 3101051520000 1500PF C278 3101054710010 470PF C279 3101054700010 47PF C280 3101054710010 470PF C281 3101054710010 470PF C282 3101054710010 470PF C283 3101054710010 470PF C284 3101054710010 470PF C285 3101052710000 270PF C286...
  • Page 172 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C297 3101054710010 470PF C298 3101054710010 470PF C299 3101054710010 470PF C300 3101054710010 470PF C301 3101054710010 470PF C302 3101054710010 470PF C303 3101054710010 470PF C304 3101051520000 1500PF C305 3101054710010 470PF C310 3101051040060 0.1UF C311...
  • Page 173 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C322 3101052710000 270PF C323 3101051050000 C324 3101064710000 470PF C325 3101052710000 270PF C326 3101052710000 270PF C331 3101054710010 470PF C332 3101054710010 470PF C333 3101054710010 470PF C334 3101052710000 270PF C335 3101054710010 470PF C336 3101054710010...
  • Page 174 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C432 3101052200010 22PF C433 3101051040060 0.1UF C434 3101051040060 0.1UF C435 3101051040060 0.1UF C436 3101051030020 0.01UF C437 3101065620010 5600PF C438 3101051010030 100PF C439 3101051010030 100PF C440 3101051030020 0.01UF C441 3101051040060 0.1UF C442...
  • Page 175 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C454 3101051030020 0.01UF C455 3101063320000 3300PF C456 3101063690000 3.6PF C457 3101051030020 0.01UF C458 3101061800000 18PF C459 3101054710010 470PF C460 3101063000010 30PF C461 3101063300000 33PF C462 3101051040060 0.1UF C463 3101072240000 0.22UF C464...
  • Page 176 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C514 3101051210000 120PF C515 3101051050000 C516 3101051590070 1.5PF C517 3101051800010 18PF C518 3101051590000 1.5PF C519 3199050758000 0.75PF C520 3101050100030 C521 3101051210000 120PF C522 3101051040060 0.1UF C523 3101051040060 0.1UF C524 3101055600000 56PF...
  • Page 177 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C614 3101055690020 5.6PF C615 3101051040060 0.1UF C616 3101051010030 100PF C617 3101051040060 0.1UF C618 3101051040060 0.1UF C619 3101061030010 0.01UF C620 3101051010030 100PF C621 3101074750000 4.7UF C622 3101051040060 0.1UF C623 3101061050020 C624 3101062250000...
  • Page 178 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C639 3101051040060 0.1UF C640 3101062240000 0.22UF C641 3101062250000 2.2UF C642 3101051040060 0.1UF C644 3101052000020 20PF C645 3101052210010 220PF C646 3001060000000 0Ω C647 3101051030020 0.01UF C648 3101061050020 C649 3101062250000 2.2UF C650 3101053920000...
  • Page 179 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C661 3110071060000 10uF C662 3101053920000 3900PF C663 3101054710010 470PF C665 3110994760000 47uF C666 3101053920000 3900PF C667 3001060000000 0Ω C668 3101051030020 0.01UF C669 3101061050020 C670 3101062250000 2.2UF C671 3101051040060 0.1UF C672 3101052000020...
  • Page 180 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C685 3101054710010 470PF C686 3101053920000 3900PF C687 3101053920000 3900PF C688 3101051040060 0.1UF C701 3101061050020 C703 3101054710010 470PF C704 3101054710010 470PF C705 3101051020010 1000PF C706 3101051050000 C707 3101051050000 C708 3101051010030 100PF C709...
  • Page 181 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C808 3101053920000 3900PF C809 3101051040060 0.1UF C810 3101051040060 0.1UF C812 3101051040060 0.1UF C813 3101053920000 3900PF C816 3101061050020 C819 3101051030020 0.01UF C820 3101053920000 3900PF C821 3101052240010 0.22UF C822 3101051030020 0.01UF C823 3101053920000...
  • Page 182 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C836 3101051040060 0.1UF C837 3101051030020 0.01UF C838 3101054710010 470PF C839 3101051040060 0.1UF C840 3101051050000 C842 3101054710010 470PF C843 3101051040060 0.1UF C845 3101054710010 470PF C846 3101054710010 470PF C847 3101051050000 C848 3101054710010 470PF...
  • Page 183 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C9003 3199060758000 0.75PF C9004 3101061590010 1.5PF C9007 3101060700020 C9009 3101060390010 C9011 3101061010010 100PF C9013 3101064710000 470PF C9014 3101051000020 10PF C9015 3101060500010 C9018 3101054710010 470PF C9019 3101060900010 C9020 3101064300000 43PF C9021 3101062490000...
  • Page 184 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C9032 3101050800000 C9033 3101054710010 470PF C9034 3101054710010 470PF C9035 3101051500020 15PF C9036 3101051020010 1000PF C9037 3101054710010 470PF C9038 3101051040060 0.1UF C9039 3101054710010 470PF C9041 3101051040060 0.1UF C9042 3101054710010 470PF C9043 3101051040060...
  • Page 185 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C9060 3101061020000 1000PF C9061 3101051020010 1000PF C9063 3101054720000 4700PF C9064 3101051020010 1000PF C9065 3101051520000 1500PF C9066 3101051030020 0.01UF C9067 3101055610000 560PF C9069 3101054710010 470PF C9071 3101051040060 0.1UF C9075 3101054710010 470PF C9077...
  • Page 186 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description C9091 3101051040060 0.1UF C9092 3101051040060 0.1UF C9093 3101051020010 1000PF C9095 3101051050000 C9096 3101054710010 470PF C9097 3101051040060 0.1UF C9098 3101054710010 470PF C9099 3101051000020 10PF C9100 3101050200010 C9101 3101050600010 C9103 3101051020010 1000PF C9104...
  • Page 187 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description C9115 3101050500010 C9116 3101050300000 C9117 3101050500010 C9118 3101052700000 27PF C9120 3101050800000 C9121 3101051020010 1000PF C9122 3101052700000 27PF C9123 3101051020010 1000PF C9124 3101050600010 C9128 3101050500010 C9129 3101050800000 C9131 3101050600010 C9132 3101050400010 C9133...
  • Page 188 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description D102 3304010100220 Varactor D103 3304010100220 Varactor D104 3303990000060 Switching diode D105 3303990000060 Switching diode D106 3304010100220 Varactor D107 3304010100220 Varactor D108 3304010100220 Varactor D109 3304010100220 Varactor D110 3304010100220 Varactor D111 3304010100890...
  • Page 189 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description D401 3304060300050 Varactor D402 3304010100220 Varactor D601 3399990000110 Diode D602 3399040600020 ESD protection diode D604 3303030100010 Switching diode D9001 3304010100200 Varactor D9002 3303030800040 Switching diode D9005 3303990000060 Switching diode D9006 3303990000060 Switching diode...
  • Page 190 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description J1601 5201050100030 Board-to-board connector J311 5201030000040 Board-to-board connector J313 5202002100200 Board-to-wire connector J601 5205003100020 Battery connector J821 5201016000010 Board-to-board connector L101 3210306220000 22nH L102 3212106100000 10nH L103 3212106100000 10nH L104 3210106100010...
  • Page 191 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description L117 3217107120000 12nH L118 3237138689000 6.8nH L119 3210106391000 390nH L120 3221505121000 Bead L121 3221505121000 Bead L122 3221505121000 Bead L123 3221505121000 Bead L124 3210406471000 470nH L125 3221505121000 Bead L201 3210406471000 470nH L302...
  • Page 192 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description L408 3210407472000 4.7uH L409 3210406471000 470nH L410 3221506601000 Bead L411 3217107392000 3.9uH L412 3221505121000 Bead L413 3213306682000 6.8uH L501 3297106339000 3.3nH L502 3221506601080 Bead L503 3297106339000 3.3nH L504 3297106339000 3.3nH L505...
  • Page 193 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description L609 3221506181000 Bead L610 3217099153000 15uH L611 3221506181000 Bead L612 3221506181000 Bead L613 3290299222000 2.2uH L614 3217099153000 15uH L615 3290299222000 2.2uH L616 3290299222000 2.2uH L617 3221506181000 Bead L702 3221505121000 Bead L801...
  • Page 194 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description L9001 3210106820000 82nH L9002 3210306560000 56nH L9003 3233099185900 18.5nH L9004 3233099185900 18.5nH L9005 3233099185900 18.5nH L9006 3212106829000 8.2nH L9007 3212106829000 8.2nH L9008 3233099470000 47nH L9009 3210306150000 15nH L9010 3210306150000 15nH L9011...
  • Page 195 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description L9025 3210306560000 56nH L9026 3210106101000 100nH L9027 3213306821000 0.82uH L9028 3210106220000 22nH L9030 3210306279000 2.7nH L9032 3210306221000 220nH L9033 3237199170000 17nH L9034 3101060400010 L9035 3237199170000 17nH L9036 3237199170000 17nH L9037 3237199170000...
  • Page 196 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description Q108 3408002000080 NPN transistor Q310 3511990000010 N-MOSFET Q312 3403008000010 Q313 3511990000010 N-MOSFET Q401 3403003000060 NPN transistor Q402 3499000000150 Compound transistor Q403 3408002000000 NPN transistor Q603 3414001000040 NPN transistor Q604 3503020000030 N-MOSFET...
  • Page 197 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description Q9007 3403008000010 Q9008 3403008000010 Q9017 3404006000000 NPN transistor Q9018 3404006000000 NPN transistor Q9019 3403999000000 Compound transistor Q9020 3403999000000 Compound transistor Q9021 3401001000490 PNP transistor R101 3001055600000 56Ω R102 3001051030000 10KΩ...
  • Page 198 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R115 3001051810010 180Ω R116 3001054720000 4.7KΩ R117 3001053320000 3.3KΩ R118 3001058220000 8.2KΩ R119 3001051010000 100Ω R120 3001054790010 4.7KΩ R121 3001051010000 100Ω R122 3001053320010 3.3KΩ R123 3001051840010 180KΩ R124 3001051220090 1.2KΩ...
  • Page 199 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description R140 3001052220000 2.2KΩ R142 3001051030000 10KΩ R143 3001053320000 3.3KΩ R144 3001053320000 3.3KΩ R145 3001053330000 33KΩ R146 3001053330000 33KΩ R147 3001051020000 1KΩ R203 3001051000000 10Ω R206 3001051000000 10Ω R207 3001053300000 33Ω...
  • Page 200 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R249 3001051030000 10KΩ R251 3001051040000 100KΩ R254 3001050000000 0Ω R255 3001053300000 33Ω R256 3001051030000 10KΩ R257 3001051010000 100Ω R258 3001051030000 10KΩ R259 3001053300000 33Ω R260 3001051520000 1.5KΩ R261 3001051530010 15KΩ...
  • Page 201 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description R323 3001052220000 2.2KΩ R324 3001053300000 33Ω R325 3001053300000 33Ω R326 3001053300000 33Ω R401 3001055100020 51Ω R402 3001051030000 10KΩ R403 3001051510000 150Ω R404 3001051220000 1.2KΩ R405 3001051030000 10KΩ R406 3001051020000 1KΩ...
  • Page 202 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R502 3001053310000 330Ω R503 3001051010000 100Ω R504 3001051030050 10KΩ R601 3001059130000 91KΩ R607 3001061000000 10Ω R611 3001051030000 10KΩ R612 3001061020010 1KΩ R613 3001051020000 1KΩ R614 3221506181000 Bead R617 3001054740010 470KΩ...
  • Page 203 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description R630 3001054730010 47KΩ R631 3001051530010 15KΩ R632 3001051020000 1KΩ R633 3001051040000 100KΩ R701 3001051020000 1KΩ R702 3001056830000 68KΩ R704 3001051010000 100Ω R705 3001051030050 10KΩ R706 3001051030050 10KΩ R707 3001053330000 33KΩ...
  • Page 204 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R806 3001051000000 10Ω R807 3001052030000 20KΩ R811 3001051030000 10KΩ R812 3001051030000 10KΩ R813 3001051540000 150KΩ R814 3001051540000 150KΩ R820 3001052020020 2KΩ R821 3001051010000 100Ω R823 3001051030050 10KΩ R824 3001051530010 15KΩ...
  • Page 205 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description R9003 3001052710010 270Ω R9004 3233099449000 4.4nH R9005 3001055690000 5.6Ω R9006 3001051030000 10KΩ R9007 3001058200000 82Ω R9008 3001051520000 1.5KΩ R9009 3001053300000 33Ω R9011 3001051010000 100Ω R9012 3001051010000 100Ω R9013 3001053320000 3.3KΩ...
  • Page 206 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R9027 3001058220000 8.2KΩ R9028 3001052710010 270Ω R9029 3001053310000 330Ω R9030 3001053320000 3.3KΩ R9033 3001051020000 1KΩ R9036 3001051030000 10KΩ R9038 3001051020000 1KΩ R9039 3001051010000 100Ω R9040 3001051020000 1KΩ R9041 3001054720000 4.7KΩ...
  • Page 207 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description R9058 3001051050000 1MΩ R9059 3001054740010 470KΩ R9063 3001054730010 47KΩ R9066 3001051520000 1.5KΩ R9067 3001056820000 6.8KΩ R9068 3001053320000 3.3KΩ R9069 3001050000000 0Ω R9071 3001053310000 330Ω R9072 3001051030050 10KΩ R9073 3001051030050 10KΩ...
  • Page 208 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description R9089 3001055620000 5.6KΩ R9090 3001051030050 10KΩ R9095 3001053320000 3.3KΩ R9096 3001053320000 3.3KΩ R9097 3001053320000 3.3KΩ R9098 3001053320000 3.3KΩ R9099 3101051010030 100PF R9100 3101051010030 100PF RN256 3005051030010 10KΩ RN261 3001052230020 22K*2 T9001...
  • Page 209 Service Manual UHF2 (450-520MHz) Information Ref. No. Print No. Part No. Description U314 3805000000030 EMI filter U315 3805000000030 EMI filter U316 3805000000030 EMI filter U317 3805000000030 EMI filter U318 3805000000030 EMI filter U319 3805000000030 EMI filter U320 3805000000030 EMI filter U321 3805000000030 EMI filter...
  • Page 210 UHF2 (450-520MHz) Information Service Manual Ref. No. Print No. Part No. Description U612 3608006000000 Power management IC U701 3606010000010 D/A converter U801 3602023005740 Audio amplifier U820 3616037000020 Switch IC U821 3613010000000 Baseband processor U9002 3605025000020 Operational amplifier U9003 5404000000060 Temperature sensor X101 3701019250030 TCXO...
  • Page 211 Service Manual UHF2 (450-520MHz) Information PD70X/ PD70XG/ HD705/ HD705G Channel Board Ref. No. Part No. Description R1002 3001051210010 120Ω C1001 3101052710000 270PF C1002 3101052710000 270PF C1003 3101052710000 270PF C1004 3101052710000 270PF C1005 3101052710000 270PF C1006 3101052710000 270PF C1007 3101052710000 270PF...
  • Page 212 UHF2 (450-520MHz) Information Service Manual Ref. No. Part No. Description Q1001 3403009000010 Compound transistor U1001 3805000000040 EMI filter J1001 5201016100040 Board-to-board connector S1003 4301080000020 Momentary contact switch 41PD7002002B0 PCB R1001 3001056810000 680Ω C1015 3101051040060 0.1UF C1016 3101051040060 0.1UF C1017 3101051040060 0.1UF L1001 3221506181000...
  • Page 213 Service Manual UHF2 (450-520MHz) Information Ref. No. Part No. Description C1012 3101052710000 270PF D1001 3310040000000 ESD protection diode D1003 3310040000000 ESD protection diode D1004 3310040000000 ESD protection diode D1005 3310040000000 ESD protection diode D1006 3310040000000 ESD protection diode D1007 3310040000000 ESD protection diode D1008 3310040000000...
  • Page 214 UHF2 (450-520MHz) Information Service Manual Ref. No. Part No. Description U1002 3608006000030 Power management IC PD78X/ PD78XG/ HD785/ HD785G Keyboard Ref. No. Part No. Description 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED...

  • Page 215: Troubleshooting Flow Chart

    Service Manual UHF2 (450-520MHz) Information Troubleshooting Flow Chart Receiver Circuit No receive R5V output is normal?[1] 5VRT output is normal?[2] Check Q9019. The static working point of Q9001 is Check Q9001. normal?[3] The static Check Q9017 working point of Q9017/Q9018 and Q9018.
  • Page 216 UHF2 (450-520MHz) Information Service Manual Description of Normal Situations: [1] Output voltage at Q9019 PIN3: about 4.95V. [2] Output voltage at U605 PIN4 or input voltage at Q9019 PIN4: about 5V. [3] Vbe: about 0.74V; Vce: about 2.5V (in the case of no signal reception). [4] For Q9018, Vbe: about 0.76V;...
  • Page 217 Service Manual UHF2 (450-520MHz) Information Transmitter Circuit...
  • Page 218 UHF2 (450-520MHz) Information Service Manual Description of Normal Situations: [1] Voltage of the power supply: about 7.4V. [2] For low power, APC-OUT: 1.8-2.1V; for high power, APC-OUT: 2.4-2.8V. [3] For low power, APC-IN: 1-1.3V; for high power, APC-IN: 1.8-2.1V. [4] PS-APC: about 3.3V. [5] TX5V: about 5V;...
  • Page 219 Service Manual UHF2 (450-520MHz) Information FGU check Check the power 5VFGU, 3V3ARF, supply circuit. 3V3DRF are normal? Q106 and Q107 Q104 and Q108 VCO oscillates? Replace Q104 are normal?[1] are normal?[2] and Q108. Check Q104, Q108 and Replace Q106 peripheral components. and Q107.
  • Page 220 UHF2 (450-520MHz) Information Service Manual Description of Normal Situations: [1] During transmission, output voltage by Q107 PIN3: about 4V. During reception, output voltage by Q106 PIN3: about 4V. [2] During transmission, voltage at Q108 E: about 1.8V. During reception, voltage at Q104 E: about 1.8V. [3] The CV value varies with frequencies.

  • Page 221: Uhf3 (350-400Mhz) Information

    Service Manual UHF3 (350-400MHz) Information 9. UHF3 (350-400MHz) Information Transmitter Circuit The transmitter circuit is mainly composed of:  RF power amplifier circuit  Low-pass filter circuit (for suppressing harmonics)  Auto power control circuit (APC) (including temperature detection circuit) Microstrip π...

  • Page 222: Low-Pass Filter Circuit

    UHF3 (350-400MHz) Information Service Manual Step 4 After processed by multiple amplifiers, the signal is processed by a microstrip matcher to complete output impedance matching, so as to reduce output power loss due to impedance mismatch. Step 5 The signal passes through the TX/RX switch and goes to the low-pass filter. 9.1.2 Low-pass Filter Circuit The low-pass filter is a high-order Chebyshev filter composed of lumped-parameter inductors and...

  • Page 223: Receiver Front-End

    Service Manual UHF3 (350-400MHz) Information Pi Attenuator Figure 9-2 Diagram of Receiver Circuit 9.2.1 Receiver Front-end The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled via APC/TV1 level, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (Q9001).

  • Page 224: Receiver Back-End

    UHF3 (350-400MHz) Information Service Manual 9.2.2 Receiver Back-end Figure 9-3 Diagram of IF Processor The first IF signal (73.35MHz) output by the IF amplifier goes into AD9864 (U401) via Pin 47, where the signal is converted to the second IF signal (2.25MHz). Then the signal is converted to digital signal via ADC sampling, and output via the SSI interface.

  • Page 225: Working Principle Of Pll

    Service Manual UHF3 (350-400MHz) Information Figure 9-4 Diagram of FGU 9.3.1 Working Principle of PLL The 19.2MHz frequency generated by the reference crystal oscillator goes to PLL for division, generating the reference frequency (i.e. step frequency f1). Meanwhile, the frequency generated by VCO generates another frequency (f2) through the frequency divider in PLL.

  • Page 226: Two-Point Modulation

    UHF3 (350-400MHz) Information Service Manual is composed of the oscillator loop and Q108, to provide carrier for TX signal. 9.3.3 Two-point Modulation In TX mode, the two-point modulation technology is employed, to obtain higher modulation accuracy and lower 4FSK bit error rate. MOD-VCO and MOD-XO send the modulation signal to the modulation end of VCO and the reference crystal oscillator of PLL respectively to modulate TX VCO and the reference crystal oscillator.

  • Page 227: Pcb View

    9.4 PCB View PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Top Layer...
  • Page 228 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Bottom Layer...
  • Page 229 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Top Layer...
  • Page 230 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Bottom Layer...
  • Page 231 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Top Layer...
  • Page 232 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Bottom Layer...
  • Page 233 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Top Layer...
  • Page 234 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Bottom Layer...

  • Page 235: Block Diagram

    9.5 Block Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (RF Section) Microstrip Low-pass Filter Final-stage Tx/Rx Switch Pre-Drive2 Drive-stage Pi Attenuator Pre-driver1 Matcher TV1/APC MOD1 Tx_VCO RX/TX RX/TX APC module VCO buffer amplifier TV1/APC 4CH DAC Rx_VCO Low-Noise Amp BATT+ Frequency Synthesizer Pi Attenuator...
  • Page 236 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Baseband Section)
  • Page 237 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Power Section) 1.6A/7.4V/5W RF PA 7.4V/1.6A RQA0002DNS 230mA/7.4V/Po=0.9W 1 /2 2.2V-18V 210mA/Po=0.89W/7.4V AF PA (TDA8547TS) 21mA/5VFGU TX:53mA/RX:29mA RX/TX 5VFGU 125uA-1000uA/5VFGU 5VA-RTC/ LDO: 5V VCCcp_main: Charge pump supply, 2.7V-5V(3 to 5 V); 150mA; VCO 3V3DRF VCCdigital: Digital supply, 2.7V-3V-3.3V;...

  • Page 238: Schematic Diagram

    9.6 Schematic Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Transmitter/Receiver) 5VRT D9011 D9011 DAN222 DAN222 R9019 R9019 4.7K 4.7K C9002 C9002 L9002 L9002 100P 100P 2SA1832 2SA1832 C9054 C9054 C9034 C9034 Q9021 Q9021 R9020 R9020 C9003 C9003 C9004 C9004 C9005 C9005 0.5p 0.5p 1.5p...
  • Page 239 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (CODEC) 1V8D L821 L821 C834 C834 BLM15PD121SN1 BLM15PD121SN1 R829 R829 470K 470K AF-CODEC-IN TONE-CODEC 3 C837 C837 C821 C821 0.01u 0.01u 0.22u 0.22u C840 C840 R838 R838 AF-50PIN-TO-CODEC R821 R821 C846 C846 470P 470P C822 C822 C824...
  • Page 240 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Audio Amplifier) BAT+ L802 L802 BLM18PG181SN1 BLM18PG181SN1 C803 C803 C804 C804 C802 C802 10u/10V 10u/10V 0.22u 0.22u 270P 270P TP801 TP801 L803 L803 IN-SPK- R801 R801 R802 R802 C805 C805 R803 R803 C806 C806 150K 150K 220p...
  • Page 241 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (DAC) 5VRT R712 R712 BLM15AG121SN1 BLM15AG121SN1 C705 C705 C706 C706 R709 R709 1000P 1000P 100k 100k C712 C712 R713 R713 R710 R710 100k 100k C703 C703 C704 C704 470P 470P 470p 470p R701 1K R701 1K MOD-VCO...
  • Page 242 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power) 5VFGU P607 P607 R607 R607 3V3ARF BAT+ U603 U603 PWR-SW+ L602 L602 L603 L603 RP102N331B*NC RP102N331B*NC L604 L604 F601 F601 BLM18PG181SN1 BLM18PG181SN1 VOUT BLM18PG181SN1*NC BLM18PG181SN1*NC 3V3DRF BLM18PG181SN1 BLM18PG181SN1 C611 C611 2.5A-32V 2.5A-32V C606 C606 R631 15K...
  • Page 243 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (AD9864) TP402 TP402 TP403 TP403 L403 BLM15AG121SN1 L403 BLM15AG121SN1 L402 L402 TP401 TP401 C448 C448 2FLO 2FLO 270n 270n C420 C420 C457 C457 Q402 Q402 0.01u 0.01u TP404 TP404 R406 R406 L412 BLM15AG121SN1 L412 BLM15AG121SN1 C446 C446...
  • Page 244 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Internal Interface) 3V3D D303 D303 D305 D305 EXT-MIC+ AF-CODEC-TO-50PIN R314 R314 R315 R315 AF-50PIN-TO-CODEC 3.3K 3.3K 3.3K 3.3K EXT-MIC- D304 D304 D306 D306 U310 U310 3V3D IIC-SCL-Acce D318 D318 DVdd_IO SLC/SPC C311 C311 SDA/SDI/SDO IIC-SDA-Acce 0.1u 0.1u...
  • Page 245 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP SI) 3V3D RN256 RN256 R256 R256 10K*4 10K*4 KB-R0 KP.R0/MPUIO8 KB-R1 SPI-CS2-IF SPIF.CS2/MPUIO4/uWIRE.CS2/LED2 KP.R1/MPUIO9 KB-R2 SPI-SCK-IF SPIF.SCK/MPUIO1 KP.R2/MPUIO10 KB-R3 SPI-DOUT-IF SPIF.DOUT/GPIO46/uWIRE.SDO KP.R3/MPUIO13 SPI-DIN-IF KB-R4 SPIF.DIN/GPIO47/uWIRE.SDI KP.R4/MPUIO15 C256 C256 C257 C257 C258 C258 C259 C259 470P 470P...
  • Page 246 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP MEN) M-A[1..24] U244 U244 SDRAM.A[0..12] U201A U201A SDRAM.A0 M-A1 M-A1 SDRAM.A0 FLASH.A1 1V8D SDRAM.A1 M-A2 M-A2 /CS2-LCD SDRAM.A1 FLASH.A2 SDRAM.A2 M-A3 /CS2-LCD M-A3 M-D0 SDRAM.A2 FLASH.A3 M-A1 SDRAM.A3 M-A4 M-A1 M-A4 M-D1 SDRAM.A3 FLASH.A4 SDRAM.A4 M-A5...
  • Page 247 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP IO) GPIO5/FLASH.CS2U POWER-KEY-DET 10 RESET-CODEC GPIO34/LCD.P13 POWER-CTL 10 GPIO7/UART2.RCV SEL-MIC GPIO32/LCD.P11 IO-TD-TEST GPIO8/TRST SEL1-ADC GPIO31/LCD.P10 GPIO16/FLASH.CS1U DISCHARGE-SW-TX 14 SEL2-ADC GPIO30/LCD.P9 EXT-PWR C288 C288 C295 C295 GPIO23/MCLKREQ DAV-CODEC GPIO29/LCD.P8 470P 470P 470P 470P C298 C298 470P 470P Acce-INT1 GPIO25/MCSI2.DOUT...
  • Page 248 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE) C205 C205 C206 C206 X203 X203 X201 X201 1000P 1000P SSP-T7F 12.5pF 20ppm SEIKO SSP-T7F 12.5pF 20ppm SEIKO CLK-OMAP/IF OE/ST OE/ST C202 C202 L201 L201 470n 470n 1000p 1000p C204 C204 C203 C203 C208 C208...
  • Page 249 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (FGU) C102 C102 C103 C103 5VFGU C104 C104 470P 470P TP102 TP102 L101 L101 C105 C105 L104 L104 VCOFB VCOFB L102 L102 L103 L103 C106 C106 L105 L105 R102 R102 0.1u 0.1u 15nH(绕线) 15nH(绕线) 15nH(绕线) 15nH(绕线) U102...
  • Page 250 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (External Interface) PD780 UHF Schematic Diagram(EXT Interface Circuit) J302 J302 R309 R309 USB-D- 5,7 PTT-IO USB-D+ 5,7 S302 S302 C307 C307 C325 C325 270p 270p 270p 270p nc-CON6 nc-CON6 J304 J304 NC*JTAG NC*JTAG RN302 100*4 RN302 100*4...
  • Page 251 PD780 UHF Schematic Diagram(SW Board Circuit) PD70X/PD70XG/HD705/HD705G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003...
  • Page 252 PD780 UHF Schematic Diagram(SW Board Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003 D1005 D1005 D1007...
  • Page 253 PD78X/PD78XG/HD785/HD785G Schematic Diagram (Keyboard) PD780 UHF Schematic Diagram(Keyboard Circuit) S1701 S1701 S1702 S1702 S1703 S1703 S1704 S1704 S1705 S1705 Cancel KB-R4 S1706 S1706 S1707 S1707 S1708 S1708 S1709 S1709 S1710 S1710 DOWN KB-R3 S1711 S1711 S1712 S1712 S1713 S1713 S1714 S1714 S1715 S1715...

  • Page 254: Parts List

    UHF3 (350-400MHz) Information Service Manual Parts List PD70X/ PD70XG/ PD78X/ PD78XG/ HD705/ HD705G/ HD785/ HD785G Main Board Ref. No. Print No. Part No. Description ANT1 6201847000000 Antenna spring plate C101 3101054710010 470PF C102 3101050400010 C103 3101050400010 C104 3101054710010 470PF C105 3101051040060 0.1UF...
  • Page 255 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C119 3101051000020 10PF C120 3101054710010 470PF C121 3101051040060 0.1UF C122 3101060500010 C123 3101061300000 13PF C124 3101050600010 C125 3101060400010 C126 3101051040060 0.1UF C127 3101054710010 470PF C128 3101061300000 13PF C129 3101063690000 3.6PF C130...
  • Page 256 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C142 3101054710010 470PF C143 3101061590010 1.5PF C144 3101063690000 3.6PF C145 3101061300000 13PF C146 3101061300000 13PF C147 3101063690000 3.6PF C148 3101062200010 22PF C149 3101060200010 C151 3101058200000 82PF C152 3101066890020 6.8PF C153 3101061200000...
  • Page 257 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C165 3101051040060 0.1UF C166 3101051040060 0.1UF C167 3101051040060 0.1UF C168 3101051010030 100PF C169 3101051040060 0.1UF C170 3101051010030 100PF C171 3199050758000 0.75PF C172 3101051020010 1000PF C173 3101051010030 100PF C174 3101051030020 0.01UF C175...
  • Page 258 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C203 3101052000020 20PF C204 3101052000020 20PF C206 3101051020010 1000PF C207 3101052710000 270PF C208 3101053310030 330PF C209 3101053920000 3900PF C210 3101062240000 0.22UF C211 3101051020010 1000PF C212 3101052240010 0.22UF C213 3101052240010 0.22UF C214...
  • Page 259 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C227 3101053920000 3900PF C228 3101054710010 470PF C229 3101054700010 47PF C230 3101052240010 0.22UF C231 3101053920000 3900PF C232 3101054710010 470PF C233 3101053920000 3900PF C234 3101052240010 0.22UF C236 3101051050000 C237 3101054710010 470PF C238 3101052240010...
  • Page 260 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C249 3101052240010 0.22UF C251 3101051030020 0.01UF C255 3101054710010 470PF C256 3101054710010 470PF C257 3101054710010 470PF C258 3101054710010 470PF C259 3101054710010 470PF C260 3101055610000 560PF C261 3101055610000 560PF C262 3101052710000 270PF C263...
  • Page 261 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C275 3101051520000 1500PF C276 3101051520000 1500PF C277 3101051520000 1500PF C278 3101054710010 470PF C279 3101054700010 47PF C280 3101054710010 470PF C281 3101054710010 470PF C282 3101054710010 470PF C283 3101054710010 470PF C284 3101054710010 470PF C285...
  • Page 262 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C296 3101054710010 470PF C297 3101054710010 470PF C298 3101054710010 470PF C299 3101054710010 470PF C300 3101054710010 470PF C301 3101054710010 470PF C302 3101054710010 470PF C303 3101054710010 470PF C304 3101051520000 1500PF C305 3101054710010 470PF C310...
  • Page 263 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C321 3101052710000 270PF C322 3101052710000 270PF C323 3101051050000 C324 3101064710000 470PF C325 3101052710000 270PF C326 3101052710000 270PF C331 3101054710010 470PF C332 3101054710010 470PF C333 3101054710010 470PF C334 3101052710000 270PF C335 3101054710010...
  • Page 264 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C431 3101052220010 2200pF C432 3101052200010 22PF C433 3101051040060 0.1UF C434 3101051040060 0.1UF C435 3101051040060 0.1UF C436 3101051030020 0.01UF C437 3101065620010 5600PF C438 3101051010030 100PF C439 3101051010030 100PF C440 3101051030020 0.01UF C441...
  • Page 265 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C453 3101051030020 0.01UF C454 3101051030020 0.01UF C455 3101063320000 3300PF C456 3101060400010 C457 3101051030020 0.01UF C458 3101062000000 20PF C459 3101054710010 470PF C460 3101063000010 30PF C461 3101063300000 33PF C462 3101051040060 0.1UF C463 3101072240000...
  • Page 266 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C514 3101051210000 120PF C515 3101051050000 C516 3101051590070 1.5PF C517 3101051800010 18PF C518 3101051590000 1.5PF C519 3199050758000 0.75PF C520 3101050100030 C521 3101051210000 120PF C522 3101051040060 0.1UF C523 3101051040060 0.1UF C524 3101055600000 56PF...
  • Page 267 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C615 3101051040060 0.1UF C616 3101051010030 100PF C617 3101051040060 0.1UF C618 3101051040060 0.1UF C619 3101061030010 0.01UF C620 3101051010030 100PF C621 3101074750000 4.7uF C622 3101051040060 0.1UF C623 3101061050020 C624 3101062250000 2.2UF C625 3101051040060...
  • Page 268 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C640 3101062240000 0.22UF C641 3101062250000 2.2UF C642 3101051040060 0.1UF C644 3101052000020 20PF C645 3101052210010 220PF C646 3001060000000 0Ω C647 3101051030020 0.01UF C648 3101061050020 C649 3101064750140 4.7uF C650 3101053920000 3900PF C651 3101051030020...
  • Page 269 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C662 3101053920000 3900PF C663 3101054710010 470PF C665 3110994760000 47uF C666 3101053920000 3900PF C667 3001060000000 0Ω C668 3101051030020 0.01UF C669 3101061050020 C670 3101064750140 4.7uF C671 3101051040060 0.1UF C672 3101052000020 20PF C674 3101052210010...
  • Page 270 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C686 3101053920000 3900PF C687 3101053920000 3900PF C688 3101051040060 0.1UF C701 3101061050020 C703 3101054710010 470PF C704 3101054710010 470PF C705 3101051020010 1000PF C706 3101051050000 C707 3101051050000 C708 3101051510000 150PF C709 3101051210000 120PF C710...
  • Page 271 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C809 3101051040060 0.1UF C810 3101051040060 0.1UF C812 3101051040060 0.1UF C813 3101053920000 3900PF C816 3101061050020 C819 3101051030020 0.01UF C820 3101053920000 3900PF C821 3101052240010 0.22UF C822 3101051030020 0.01UF C823 3101053920000 3900PF C824 3101052240010...
  • Page 272 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C837 3101051030020 0.01UF C838 3101054710010 470PF C839 3101051040060 0.1UF C840 3101051050000 C842 3101054710010 470PF C843 3101051040060 0.1UF C845 3101054710010 470PF C846 3101054710010 470PF C847 3101051050000 C848 3101054710010 470PF C849 3101054710010 470PF...
  • Page 273 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C9004 3101050300000 C9007 3101060700020 C9009 3101060900010 C9011 3101061010010 100PF C9013 3101064710000 470PF C9014 3101051000020 10PF C9015 3101061200000 12PF C9018 3101054710010 470PF C9019 3101060900010 C9020 3101065600000 56PF C9021 3101061200000 12PF C9023 3101060800010...
  • Page 274 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C9033 3101054710010 470PF C9034 3101054710010 470PF C9035 3101050800000 C9036 3101051020010 1000PF C9037 3101054710010 470PF C9038 3101051040060 0.1UF C9039 3101054710010 470PF C9041 3101056830040 0.068uF C9042 3101054710010 470PF C9043 3101051040060 0.1UF C9044 3101051030020...
  • Page 275 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C9060 3101061020000 1000PF C9061 3101051020010 1000PF C9063 3101054720000 4700PF C9064 3101051020010 1000PF C9065 3101051520000 1500PF C9066 3101051030020 0.01UF C9067 3101055610000 560PF C9069 3101054710010 470PF C9071 3101051040060 0.1UF C9075 3101054710010 470PF C9077...
  • Page 276 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description C9091 3101051040060 0.1UF C9092 3101051040060 0.1UF C9093 3101051020010 1000PF C9095 3101051050000 C9096 3101054710010 470PF C9097 3101051040060 0.1UF C9098 3101054710010 470PF C9099 3101051000020 10PF C9100 3101050500010 C9101 3101050700010 C9103 3101051020010 1000PF C9104...
  • Page 277 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description C9115 3101051200020 12PF C9116 3101050300000 C9117 3101051000020 10PF C9118 3101052700000 27PF C9120 3101051000020 10PF C9121 3101051020010 1000PF C9122 3101052700000 27PF C9124 3101050600010 C9128 3101050400010 C9129 3101050500010 C9131 3101051800070 18PF C9133 3101050400010...
  • Page 278 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description D104 3303990000060 Switching diode D105 3303990000060 Switching diode D106 3304010100180 Varactor D107 3304010100180 Varactor D108 3304990000030 Varactor D109 3304990000030 Varactor D110 3304990000030 Varactor D111 3304010100890 Varactor D112 3303990000060 Switching diode D302 3303990000010...
  • Page 279 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description D601 3399990000110 Switching diode D602 3399040600020 ESD protection diode D604 3303030100010 Switching diode D9001 3304010100180 Varactor D9002 3303030800040 Switching diode D9005 3303990000060 Switching diode D9006 3303990000060 Switching diode D9007 3303990000060 Switching diode...
  • Page 280 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description J313 5202002100200 Board-to-wire connector J601 5205003100020 Battery connector J821 5201016000010 Board-to-board connector L101 3210106390000 39nH L102 3210306150000 15nH L103 3210306150000 15nH L104 3210106150000 15nH L105 3210106150000 15nH L106 3217106471000 470nH L107...
  • Page 281 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description L119 3217106471000 470nH L120 3221505121000 Bead L121 3221505121000 Bead L122 3221505121000 Bead L123 3221505121000 Bead L124 3210406471000 470nH L125 3221505121000 Bead L201 3210406471000 470nH L302 3221506601000 Bead L303 3221506181000 Bead L304...
  • Page 282 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description L410 3221506601000 Bead L411 3213212332000 3.3uH L412 3221505121000 Bead L413 3213306682000 6.8uH L501 3297106339000 3.3nH L502 3221506601080 Bead L503 3297106339000 3.3nH L504 3297106339000 3.3nH L505 3221506601080 Bead L506 3210106390000 39nH L507...
  • Page 283 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description L610 3217099153000 15uH L611 3221506181000 Bead L612 3221506181000 Bead L613 3290299222000 2.2uH L614 3217099153000 15uH L615 3290299222000 2.2uH L616 3290299222000 2.2uH L617 3221506181000 Bead L702 3221505121000 Bead L801 3221505121010 Bead L802...
  • Page 284 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description L9002 3210306820000 82nH L9003 3239999250000 Air-core coil L9004 3239999250000 Air-core coil L9005 3233099185900 Air-core coil L9006 3212106120000 12nH L9007 3212106120000 12nH L9008 3233099470000 47nH L9009 3210306220000 22nH L9010 3210306330000 33nH L9011...
  • Page 285 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description L9026 3210106101000 100nH L9027 3213306821000 0.82uH L9028 3210106220000 22nH L9030 3220106399000 3.9nH L9032 3210306221000 220nH L9033 3237199170000 Air-core coil L9034 3101064700000 47PF L9035 3237199170000 Air-core coil L9036 3237199170000 Air-core coil L9037 3237199170000...
  • Page 286 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description Q310 3511990000010 N-MOSFET Q312 3403008000010 Q313 3511990000010 N-MOSFET Q401 3403003000060 NPN transistor Q402 3499000000150 PNP+NPN Q403 3408002000000 NPN transistor Q604 3503020000030 N-MOSFET Q605 3505010000210 P-MOSFET Q606 3505010000210 P-MOSFET Q607 3503020000030 N-MOSFET...
  • Page 287 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description Q9017 3404006000000 NPN transistor Q9018 3404006000000 NPN transistor Q9019 3403999000000 PNP+NPN Q9020 3403999000000 PNP+NPN Q9021 3401001000490 R101 3001055600000 56Ω R102 3001051030000 10KΩ R103 3001051000000 10Ω R104 3001051020000 1KΩ R105 3001051030000 10KΩ...
  • Page 288 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R117 3001053320000 3.3KΩ R118 3001058220000 8.2KΩ R119 3001051010000 100Ω R120 3001054720000 4.7KΩ R121 3001051010000 100Ω R122 3001053320000 3.3KΩ R123 3001051020000 1KΩ R124 3001053320000 3.3KΩ R125 3001053320000 3.3KΩ R127 3001051220000 1.2KΩ...
  • Page 289 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description R143 3001053320000 3.3KΩ R144 3001053320000 3.3KΩ R145 3001053330000 33KΩ R146 3001053330000 33KΩ R147 3001051020000 1KΩ R203 3001051000000 10Ω R206 3001051000000 10Ω R207 3001053300000 33Ω R208 3001050000000 0Ω R209 3001051000000 10Ω...
  • Page 290 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R254 3001050000000 0Ω R255 3001053300000 33Ω R256 3001051030000 10KΩ R257 3001051010000 100Ω R258 3001051030000 10KΩ R259 3001053300000 33Ω R260 3001051520000 1.5KΩ R261 3001051530010 15KΩ R262 3001051530010 15KΩ R263 3001054710000 470Ω...
  • Page 291 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description R325 3001053300000 33Ω R326 3001053300000 33Ω R401 3001055100020 51Ω R402 3001051030000 10KΩ R403 3001051510000 150Ω R404 3001051220000 1.2KΩ R405 3001051030000 10KΩ R406 3001051020000 1KΩ R407 3001058220000 8.2KΩ R408 3001051010000 100Ω...
  • Page 292 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R504 3001051030050 10KΩ R601 3001059130000 91KΩ R607 3001061000000 10Ω R611 3001051030000 10KΩ R612 3001061020010 1KΩ R613 3001051020000 1KΩ R614 3221506181000 Bead R617 3001054740010 470KΩ R618 3001051340000 130KΩ R620 3001051040000 100KΩ...
  • Page 293 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description R632 3001051020000 1KΩ R633 3001051040000 100KΩ R701 3001051020000 1KΩ R702 3001056830000 68KΩ R704 3001051010000 100Ω R705 3001051030050 10KΩ R706 3001051030050 10KΩ R707 3001053330000 33KΩ R709 3001051040000 100KΩ R710 3001051040000 100KΩ...
  • Page 294 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R811 3001051030000 10KΩ R812 3001051030000 10KΩ R813 3001051540000 150KΩ R814 3001051540000 150KΩ R820 3001052020020 2KΩ R821 3001051010000 100Ω R823 3001051030050 10KΩ R824 3001051530010 15KΩ R825 3001052020020 2KΩ R826 3001054730010 47KΩ...
  • Page 295 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description R9005 3001055690000 5.6Ω R9006 3001051030000 10KΩ R9007 3001058200000 82Ω R9008 3001051520000 1.5KΩ R9009 3001053300000 33Ω R9011 3001051010000 100Ω R9012 3001051010000 100Ω R9013 3001053320000 3.3KΩ R9015 3001053310000 330Ω R9016 3001051510000 150Ω...
  • Page 296 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R9029 3001053910010 390Ω R9030 3001053320000 3.3KΩ R9031 3001053320000 3.3KΩ R9033 3001051020000 1KΩ R9036 3001051030000 10KΩ R9038 3001051020000 1KΩ R9039 3001051010000 100Ω R9040 3001051020000 1KΩ R9041 3001054720000 4.7KΩ R9042 3001053310000 330Ω...
  • Page 297 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description R9059 3001054740010 470KΩ R9063 3001051030050 10KΩ R9066 3001051520000 1.5KΩ R9067 3001056820000 6.8KΩ R9068 3001053320000 3.3KΩ R9069 3001050000000 0Ω R9071 3001053310000 330Ω R9072 3001051030050 10KΩ R9073 3001051030050 10KΩ R9074 3001051030000 10KΩ...
  • Page 298 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description R9090 3001051030050 10KΩ R9095 3001053320000 3.3KΩ R9096 3001053320000 3.3KΩ R9097 3001053320000 3.3KΩ R9098 3001053320000 3.3KΩ R9099 3101052210010 220PF R9100 3101052210010 220PF RN256 3005051030010 10KΩ RN261 3001052230020 22K*2 T9001 5406000000200 Transformer T9002...
  • Page 299 Service Manual UHF3 (350-400MHz) Information Ref. No. Print No. Part No. Description U314 3805000000030 EMI filter U315 3805000000030 EMI filter U316 3805000000030 EMI filter U317 3805000000030 EMI filter U318 3805000000030 EMI filter U319 3805000000030 EMI filter U320 3805000000030 EMI filter U321 3805000000030 EMI filter...
  • Page 300 UHF3 (350-400MHz) Information Service Manual Ref. No. Print No. Part No. Description U612 3608006000000 Power management IC U701 3606010000010 D/A converter U801 3602023005740 Audio amplifier U820 3616037000020 Switch IC U821 3613010000000 Baseband processor U9002 3605025000020 Operational amplifier U9003 5404000000060 Temperature sensor X101 3701019250030 TCXO...
  • Page 301 Service Manual UHF3 (350-400MHz) Information PD70X/ PD70XG/ HD705/ HD705G Channel Board Ref. No. Part No. Description R1002 3001051210010 120Ω C1001 3101052710000 270PF C1002 3101052710000 270PF C1003 3101052710000 270PF C1004 3101052710000 270PF C1005 3101052710000 270PF C1006 3101052710000 270PF C1007 3101052710000 270PF...
  • Page 302 UHF3 (350-400MHz) Information Service Manual Ref. No. Part No. Description Q1001 3403009000010 Compound transistor U1001 3805000000040 EMI filter J1001 5201016100040 Board-to-board connector S1003 4301080000020 Momentary contact switch 41PD7002002B0 PCB R1001 3001056810000 680Ω C1015 3101051040060 0.1UF C1016 3101051040060 0.1UF C1017 3101051040060 0.1UF L1001 3221506181000...
  • Page 303 Service Manual UHF3 (350-400MHz) Information Ref. No. Part No. Description C1012 3101052710000 270PF D1001 3310040000000 ESD protection diode D1003 3310040000000 ESD protection diode D1004 3310040000000 ESD protection diode D1005 3310040000000 ESD protection diode D1006 3310040000000 ESD protection diode D1007 3310040000000 ESD protection diode D1008 3310040000000...
  • Page 304 UHF3 (350-400MHz) Information Service Manual Ref. No. Part No. Description U1002 3608006000030 Power management IC PD78X/ PD78XG/ HD785/ HD785G Keyboard Ref. No. Part No. Description 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED...

  • Page 305: Troubleshooting Flow Chart

    Service Manual UHF3 (350-400MHz) Information Troubleshooting Flow Chart Receiver Circuit No receive R5V output is normal?[1] 5VRT output is normal?[2] Check Q9019. The static working point of Q9001 is Check Q9001. normal?[3] The static Check Q9017 working point of Q9017/Q9018 and Q9018.
  • Page 306 UHF3 (350-400MHz) Information Service Manual Description of Normal Situations: [1] Output voltage at Q9019 PIN3: about 4.95V. [2] Output voltage at U605 PIN4 or input voltage at Q9019 PIN4: about 5V. [3] Vbe: about 0.74V; Vce: about 2.5V (in the case of no signal reception). [4] For Q9018, Vbe: about 0.76V;...
  • Page 307 Service Manual UHF3 (350-400MHz) Information Transmitter Circuit...
  • Page 308 UHF3 (350-400MHz) Information Service Manual Description of Normal Situations: [1] Voltage of the power supply: about 7.4V. [2] For low power, APC-OUT: 1.8-2.1V; for high power, APC-OUT: 2.4-2.8V. [3] For low power, APC-IN: 1-1.3V; for high power, APC-IN: 1.8-2.1V. [4] PS-APC: about 3.3V. [5] TX5V: about 5V;...
  • Page 309 Service Manual UHF3 (350-400MHz) Information FGU check Check the power 5VFGU, 3V3ARF, supply circuit. 3V3DRF are normal? Q106 and Q107 Q104 and Q108 VCO oscillates? Replace Q104 are normal?[1] are normal?[2] and Q108. Check Q104, Q108 and Replace Q106 peripheral components. and Q107.
  • Page 310 UHF3 (350-400MHz) Information Service Manual Description of Normal Situations: [1] During transmission, output voltage by Q107 PIN3: about 4V. During reception, output voltage by Q106 PIN3: about 4V. [2] During transmission, voltage at Q108 E: about 1.8V. During reception, voltage at Q104 E: about 1.8V. [3] The CV value varies with frequencies.

  • Page 311: Uhf5 (806-941Mhz) Information

    Service Manual UHF5 (806-941MHz) Information 10. UHF5 (806-941MHz) Information 10.1 Transmitter Circuit The transmitter circuit is mainly composed of:  RF power amplifier circuit  Low-pass filter circuit (for suppressing harmonics)  Auto power control circuit (APC) (including temperature detection circuit) Figure 10-1 Diagram of Transmitter Circuit 10.1.1 RF Power Amplifier Circuit...

  • Page 312: Low-Pass Filter Circuit

    UHF5 (806-941MHz) Information Service Manual Step 5 After processed by multiple amplifiers, the signal passes through an impedance matching circuit, so as to reduce output power loss due to impedance mismatch. Step 6 The signal passes through the TX/RX switch and goes to the low-pass filter. 10.1.2 Low-pass Filter Circuit The low-pass filter is a high-order Chebyshev filter composed of microstrip and capacitor.

  • Page 313: Receiver Front-End

    Service Manual UHF5 (806-941MHz) Information Figure 10-2 Diagram of Receiver Circuit 10.2.1 Receiver Front-end The HF signal from the low-pass filter passes through the RX switch, which switches the signal to the 800MHz or 900MHz channel. Then the signal goes to the first SAW filter, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (Q9009).

  • Page 314: Receiver Back-End

    UHF5 (806-941MHz) Information Service Manual 10.2.2 Receiver Back-end Figure 10-3 Diagram of IF Processor The first IF signal (73.35 MHz) output by the IF amplifier goes into AD9864 (U401) via Pin 47, where the signal is converted to the second IF signal (2.25MHz). Then the signal is converted to digital signal via ADC sampling, and output via the SSI interface.

  • Page 315: Working Principle Of Pll

    Service Manual UHF5 (806-941MHz) Information MOD-VCO Low VCO VCO buffer amplifier MOD-VCO VCO-OUT PUT 4CH DAC High VCO 4pole RC filter Frequency Synthesizer From OMAP Ref. Osc 19.2MHZ CV Buffer Adapt CV out CV-read Adapt control control Reference OSC signal OMAP Figure 10-4 Diagram of FGU 10.3.1...

  • Page 316: Two-Point Modulation

    UHF5 (806-941MHz) Information Service Manual status via OMAP. The high VCO is composed of the oscillator loop and Q104, to provide carrier for the LO signal and TX signal. The low VCO is composed of the oscillator loop and Q108, to provide carrier for the LO signal and TX signal.

  • Page 317: Pcb View

    10.4 PCB View PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Top Layer...
  • Page 318 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Bottom Layer...
  • Page 319 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Top Layer...
  • Page 320 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Bottom Layer...
  • Page 321 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Top Layer...
  • Page 322 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Bottom Layer...
  • Page 323 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Top Layer...
  • Page 324 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Bottom Layer...

  • Page 325: Block Diagram

    10.5 Block Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (RF Section) Microstrip Low-pass Filter Final-stage Tx/Rx Switch Pre-driver1 Pre-Drive2 Drive-stage Pi Attenuator Matcher MOD1 Low VCO APC module VCO buffer VCO amplifier 4CH DAC High VCO Low-Noise Amp BATT+ Frequency Synthesizer module From OMAP Pi Attenuator Ref.
  • Page 326 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Baseband Section)
  • Page 327 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Power Section) 1.6A/7.4V/5W RF PA 7.4V/1.6A RQA0002DNS 230mA/7.4V/Po=0.9W 1 /2 2.2V-18V 210mA/Po=0.89W/7.4V AF PA (TDA8547TS) 21mA/5VFGU TX:53mA/RX:29mA RX/TX 5VFGU 125uA-1000uA/5VFGU 5VA-RTC/ LDO: 5V VCCcp_main: Charge pump supply, 2.7V-5V(3 to 5 V); 150mA; VCO 3V3DRF VCCdigital: Digital supply, 2.7V-3V-3.3V;...

  • Page 328: Schematic Diagram

    10.6 Schematic Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Transmitter/Receiver) C9002 C9002 L9002 L9002 100P 100P 10NH 10NH C9035 C9035 C9036 C9036 C9003 C9003 C9004 C9004 C9005 C9005 1.6p(HQ) 1.6p(HQ) C9015 C9015 C9007 C9007 ANT1 ANT1 100P 100P C9009 C9009 ANT-GPS 100P 100P...
  • Page 329 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (CODEC) C834 C834 R829 R829 470K 470K 1V8D AF-CODEC-IN TONE-CODEC C837 C837 0.01u 0.01u L821 L821 BLM15PD121SN1 BLM15PD121SN1 C840 C840 R838 R838 AF-50PIN-to-CODEC C821 C821 C846 C846 0.22u 0.22u 470P 470P R821 R821 R841 10K R841 10K...
  • Page 330 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Audio Amplifier) BAT+ L802 L802 BAT+ 10,14 C802 C802 BLM18PG181SN1 BLM18PG181SN1 C803 C803 C804 C804 10u/10V 10u/10V 0.22u 0.22u TP801 TP801 L803 L803 IN-SPK- R802 R802 C805 C805 R803 R803 C806 C806 150K 150K R801 R801 220p...
  • Page 331 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (DAC) 5VRT R712 R712 BLM15PD121SN1 BLM15PD121SN1 C705 C705 C706 C706 R709 R709 1000P 1000P 100k_F 100k_F C712 C712 R713 R713 R710 R710 100k_F 100k_F C703 C703 C704 C704 470P 470P TO VCO 470p 470p R701 1K R701 1K...
  • Page 332 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power) R607 10 R607 10 PWR-SW+ 5VFGU 12,14 BAT+ BAT+ P607 P607 Q602 Q602 3V3ARF U603 U603 L602 L602 Si2343CDS Si2343CDS L604 L604 L603 L603 NC*RP102N331B NC*RP102N331B F601 F601 BLM18PG181SN1 BLM18PG181SN1 VOUT BLM18PG181SN1 BLM18PG181SN1 C611 C611 2.5A-32V 2.5A-32V...
  • Page 333 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (AD9864) TP402 TP402 TP403 TP403 L403 BLM15PD121SN1 L403 BLM15PD121SN1 L402 L402 TP401 TP401 C448 C448 2FLO 2FLO 270n 270n C420 C420 C457 C457 Q402 Q402 0.01u 0.01u TP404 TP404 R406 R406 L412 BLM15PD121SN1 L412 BLM15PD121SN1 C446 C446...
  • Page 334 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Internal Interface) 3V3D R314 R314 R315 R315 3.3K 3.3K D303 D303 D305 D305 3.3K 3.3K EXT-MIC+ AF-CODEC-TO-50PIN U310 U310 3V3D AF-50PIN-to-CODEC EXT-MIC- D304 D304 D306 D306 IIC-SCL-Acce DVdd_IO SLC/SPC C346 C346 C311 C311 SDA/SDI/SDO IIC-SDA-Acce 0.1u 0.1u...
  • Page 335 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP SI) 3V3D RN256 RN256 R256 R256 10K*4 10K*4 KB-R0 KP.R0/MPUIO8 KB-R1 SPI-CS2-IF SPIF.CS2/MPUIO4/uWIRE.CS2/LED2 KP.R1/MPUIO9 KB-R2 SPI-SCK-IF SPIF.SCK/MPUIO1 KP.R2/MPUIO10 KB-R3 SPI-DOUT-IF SPIF.DOUT/GPIO46/uWIRE.SDO KP.R3/MPUIO13 SPI-DIN-IF KB-R4 SPIF.DIN/GPIO47/uWIRE.SDI KP.R4/MPUIO15 C256 C256 C257 C257 C258 C258 C259 C259 KB.C0/MPUIO0 KB-C0...
  • Page 336 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP MEN) M-A[1..24] U244 U244 SDRAM.A[0..12] U201A U201A SDRAM.A0 M-A1 M-A1 SDRAM.A0 FLASH.A1 1V8D SDRAM.A1 M-A2 M-A2 SDRAM.A1 FLASH.A2 /CS2-LCD SDRAM.A2 M-A3 /CS2-LCD M-A3 M-D0 M-A1 SDRAM.A2 FLASH.A3 SDRAM.A3 M-A4 M-A4 M-D1 M-A1 SDRAM.A3 FLASH.A4 SDRAM.A4 M-A5...
  • Page 337 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP IO) POWER-KEY-DET 10 GPIO5/FLASH.CS2U RESET-CODEC GPIO34/LCD.P13 GPIO7/UART2.RCV POWER-CTL 10 SEL-MIC GPIO32/LCD.P11 IO-TD-TEST GPIO8/TRST SEL1-ADC GPIO31/LCD.P10 DISCHARGE-SW-TX 14 GPIO16/FLASH.CS1U SEL2-ADC GPIO30/LCD.P9 EXT-PWR GPIO23/MCLKREQ C288 C288 C295 C295 DAV-CODEC GPIO29/LCD.P8 C298 C298 Acce-INT1 GPIO25/MCSI2.DOUT TONE-CODEC GPIO50/PWT/TIMER.PWM0 R250 R250 EXT-PTT GPIO26/MCSI2.DIN...
  • Page 338 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE) C205 C205 C206 C206 X203 X203 X201 X201 1000P 1000P SSP-T7F 12.5pF 20ppm SEIKO SSP-T7F 12.5pF 20ppm SEIKO CLK-OMAP/IF OE/ST OE/ST 470n 470n C202 C202 L201 L201 1000p 1000p C204 C204 C203 C203 C208 C208...
  • Page 339 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (FGU) C104 C104 R107 R107 100P 100P R108 R108 L102 L102 390R 390R R102 R102 15nH(绕线) 15nH(绕线) L104 L104 L105 L105 L106 L106 4.7nH(Hi Q) 4.7nH(Hi Q) C117 C117 L131 L131 4.7nH(Hi Q) 4.7nH(Hi Q) C118 C118...
  • Page 340 PD780 UHF Schematic Diagram(EXT Interface Circuit) PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (External Interface) J302 J302 R309 R309 USB-D- 5,7 PTT-IO USB-D+ 5,7 S302 S302 C307 C307 C325 C325 270p 270p 270p 270p nc-CON6 nc-CON6 J304 J304 NC*JTAG NC*JTAG RN302 100*4 RN302 100*4...
  • Page 341 PD780 UHF Schematic Diagram(SW Board Circuit) PD70X/PD70XG/HD705/HD705G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003...
  • Page 342 PD780 UHF Schematic Diagram(SW Board Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003 D1005 D1005 D1007...
  • Page 343 PD78X/PD78XG/HD785/HD785G Schematic Diagram (Keyboard) PD780 UHF Schematic Diagram(Keyboard Circuit) S1701 S1701 S1702 S1702 S1703 S1703 S1704 S1704 S1705 S1705 Cancel KB-R4 S1706 S1706 S1707 S1707 S1708 S1708 S1709 S1709 S1710 S1710 DOWN KB-R3 S1711 S1711 S1712 S1712 S1713 S1713 S1714 S1714 S1715 S1715...

  • Page 344: Parts List

    UHF5 (806-941MHz) Information Service Manual 10.7 Parts List PD70X/ PD70XG/ PD78X/ PD78XG/ HD705/ HD705G/ HD785/ HD785G Main Board Ref. No. Print No. Part No. Description ANT1 6201847000000 Antenna spring plate 6201915000000 Shielding can for antenna spring plate 6201935000000 Shielding can for switching power...
  • Page 345 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C121 3101051040060 0.1uF C122 3101050300000 C123 3101051890030 1.8pF C124 3101053000010 30pF C125 3101052290010 2.2pF C128 3101051890030 1.8pF C130 3101051000030 10pF C131 3101050200010 20pF C132 3101051800070 18pF C133 3101053690010 3.6pF C134 3101055690110...
  • Page 346 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C146 3101052790050 2.7pF C148 3101050900000 C149 3101050590020 0.5pF C151 3101051200050 12pF C152 3101053690010 3.6pF C153 3101050700010 C154 3101051050160 C157 3101055600000 100pF C158 3001060000000 0Ω C159 3101051820010 1800pF C160 3101052220060 2200pF C161...
  • Page 347 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C172 3101051020010 1000pF C173 3101055600000 100pF C174 3101051030020 0.01uF C175 3101052710000 270pF C176 3101053310030 330pF C177 3101072240000 0.22uF C178 3101071040000 0.1uF C179 3101051040060 0.1uF C180 3101051020010 1000pF C182 3101051040060 0.1uF C183...
  • Page 348 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description c201 3101054700010 47pF C202 3101051020010 1000pF C203 3101052000020 20pF C204 3101052000020 20pF C206 3101051020010 1000pF C207 3101052710000 270pF C208 3101053310030 330pF C209 3101053920000 3900pF C210 3101062240000 0.22uF C211 3101051020010 1000pF C212...
  • Page 349 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C223 3101054700010 47pF C226 3101052240010 0.22uF C227 3101053920000 3900pF C228 3101055600000 56pF C229 3101054700010 47pF C230 3101052240010 0.22uF C231 3101053920000 3900pF C232 3101055600000 56pF C233 3101053920000 3900pF C234 3101052240010 0.22uF C235...
  • Page 350 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C246 3101053920000 3900pF C247 3101053920000 3900pF C248 3101052240010 0.22uF C249 3101052240010 0.22uF C251 3101051030020 0.01uF C255 3101055600000 56pF C256 3101055600000 56pF C257 3101055600000 56pF C258 3101055600000 56pF C259 3101055600000 56pF C260...
  • Page 351 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C272 3101054700010 47pF C273 3101054700010 47pF C274 3101051200020 12pF C275 3101055600000 56pF C276 3101055600000 56pF C277 3101051520000 1500pF C279 3101054700010 47pF C280 3101055600000 56pF C281 3101055600000 56pF C282 3101055600000 56pF C283...
  • Page 352 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C294 3101055600000 56pF C295 3101055600000 56pF C296 3101055600000 56pF C297 3101055600000 56pF C298 3101055600000 56pF C299 3101055600000 56pF C300 3101055600000 56pF C301 3101055600000 56pF C302 3101055600000 56pF C303 3101055600000 56pF C304...
  • Page 353 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C319 3001051040000 100KΩ C320 3101054710010 470pF C321 3101055600000 56pF C322 3101055600000 56pF C323 3101055600000 56pF C324 3101055600000 56pF C325 3101055600000 56pF C326 3101055600000 56pF C327 3101055600000 56pF C328 3101051820010 1800pF C329...
  • Page 354 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C340 3101055600000 56pF C341 3101055600000 56pF C342 3101055600000 56pF C343 3101055600000 56pF C344 3101055600000 56pF C345 3101055600000 56pF C346 3101055600000 56pF C420 3101051200020 12pF C422 3101051040060 0.1uF C423 3101051050160 C425 3101051800010...
  • Page 355 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C436 3101051030020 0.01uF C437 3101065620010 5600pF C438 3101055600000 100pF C439 3101055600000 100pF C440 3101051030020 0.01uF C441 3101051040060 0.1uF C442 3101061030010 0.01uF C443 3101063900000 39pF C444 3101055600000 56pF C445 3101051040060 0.1uF C446...
  • Page 356 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C458 3101061800000 18pF C459 3101055600000 56pF C460 3101063000010 30pF C461 3101063300000 33pF C462 3101051040060 0.1uF C463 3101072240000 0.22uF C464 3101051040060 0.1uF C465 3101051040060 0.1uF C466 3101051040060 0.1uF C467 3101062250000 2.2uF C468...
  • Page 357 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C518 3101052790060 C519 3101050100030 C520 3101050100030 C521 3101051210000 120pF C522 3101051040060 0.1uF C523 3101051040060 0.1uF C524 3101055600000 56pF C525 3101051040060 0.1uF C526 3101051050160 C527 3101051290040 1.2pF C529 3101053000010 30pF C601 3101062250000...
  • Page 358 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C611 3101051040060 0.1uF C612 3101051030020 0.01uF C614 3101055690110 5.6pF C616 3101055600000 100pF C617 3101051040060 0.1uF C618 3101051040060 0.1uF C619 3101061030010 0.01uF C620 3101055600000 56pF C621 3101074750000 4.7uF C622 3101051040060 0.1uF C623...
  • Page 359 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C637 3110994760000 Capacitor C638 3101053920000 3900pF C639 3101051040060 0.1uF C640 3101062240000 0.22uF C641 3101062250000 2.2uF C642 3101051040060 0.1uF C644 3101052000020 20pF C645 3101052210020 220pF C646 3001060000000 0Ω C647 3101051040060 0.1uF C648...
  • Page 360 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C659 3101051040060 0.1uF C660 3101062250000 2.2uF C661 3110071060000 3-terminal capacitor C662 3101053920000 3900pF C663 3101055600000 56pF C665 3110994760000 Capacitor C666 3101053920000 3900pF C667 3001060000000 0Ω C668 3101051040060 0.1uF C669 3101061050060 C670...
  • Page 361 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C683 3101052240010 0.22uF C684 3101053920000 3900pF C685 3101055600000 56pF C686 3101053920000 3900pF C687 3101055600000 56pF C688 3101051040060 0.1uF C701 3101061050060 C703 3101054710010 470pF C704 3101054710010 470pF C705 3101051020010 1000pF C706 3101051050160...
  • Page 362 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C805 3101052210020 220pF C806 3101052210020 220pF C808 3101053920000 3900pF C809 3101051040060 0.1uF C810 3101051040060 0.1uF C812 3101051040060 0.1uF C813 3101053920000 3900pF C816 3101061050130 C819 3101051030020 0.01uF C820 3101053920000 3900pF C821 3101052240010...
  • Page 363 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C833 3101051040060 0.1uF C834 3101051050160 C835 3101055600000 56pF C836 3101051040060 0.1uF C837 3101051030020 0.01uF C838 3101054710010 470pF C839 3101051040060 0.1uF C840 3101051050160 C842 3101055600000 56pF C843 3101051040060 0.1uF C845 3101055600000 56pF...
  • Page 364 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C858 3101053920000 3900pF C9001 3101054700010 47pF C9002 3101055600000 100pF C9003 3101051690010 1.6pF c9006 3101062490000 2.4pF C9008 3101064790010 4.7pF C9011 3101063900000 39pF C9012 3101068290040 8.2pF C9013 3101063900000 39pF C9014 3101052200010 22pF C9015...
  • Page 365 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C9029 3101050100030 C9030 3101053000010 30pF C9031 3101051040060 0.1uF C9032 3101050800000 C9033 3101055600000 100pF C9034 3101052790060 C9035 3101055600000 100pF C9036 3101055600000 100pF C9038 3101051040060 0.1uF C9039 3101055600000 100pF C9040 3101057590000 7.5pF C9041...
  • Page 366 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C9052 3101055600000 100pF C9055 3101051500020 15pF C9057 3101051040060 0.1uF C9058 3101051040060 0.1uF C9059 3101051020010 1000pF C9060 3101061020000 1000pF C9061 3101051020010 1000pF C9063 3101055620010 5600pF C9064 3101051020010 1000pF C9065 3101051520000 1500pF C9066...
  • Page 367 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C9080 3101050400010 C9081 3101054390010 4.3pF C9082 3101051040060 0.1uF C9084 3101050200010 20pF C9085 3101051020010 1000pF C9086 3101051040060 0.1uF C9087 3101050600010 C9088 3101055600000 100pF C9089 3101054700010 47pF C9090 3101051030020 0.01uF C9091 3101051040060 0.1uF...
  • Page 368 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description C9106 3101050300000 C9107 3101050900000 C9108 3101050200010 20pF C9109 3101054390010 4.3pF C9110 3101051030020 0.01uF C9113 3101050200010 20pF C9114 3101050300000 C9115 3101050300000 C9116 3101053390010 3.3pF C9117 3101053390010 3.3pF C9118 3101052700000 27pF C9120 3101054700010...
  • Page 369 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description C9131 3101055600000 100pF C9133 3101055600000 100pF C9136 3001050000000 0Ω C9138 3217105110000 Chip inductor C9141 3101054700010 47pF C9142 3101055600000 100pF C9143 3101054700010 47pF c9145 3101055600000 100pF c9146 3101055600000 100pF C9147 3101051020010 1000pF...
  • Page 370 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description D104 3303990000060 Switching diode D105 3303990000060 Switching diode D106 3304010100200 Varactor D107 3304990000040 Varactor D108 3304990000040 Varactor D109 3304010100200 Varactor D110 3304990000040 Varactor D111 3304010100200 Varactor D112 3303990000060 Switching diode D113 3304010100200...
  • Page 371 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description D601 3399990000110 Diode D602 3399040600020 ESD protection diode D604 3303030100010 Switching diode D9002 3303030800040 Switching diode D9005 3303990000060 Switching diode D9006 3399990000260 Rectifier diode D9008 3303990000060 Switching diode D9010 3302031100010 Zener diode...
  • Page 372 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description L102 3210305150010 15nH L104 3210306479000 4.7nH L105 3210306479000 4.7nH L106 3217106101020 Wire-wound inductor L108 3217106101020 Wire-wound inductor L109 3221505121010 Bead L110 3217106101020 Wire-wound inductor L112 3247107120000 Wire-wound inductor L113 3210105680000 68nH...
  • Page 373 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description L127 3210105479000 4.7nH L128 3210105479000 4.7nH L129 3217106100000 Wire-wound inductor L130 3221505601000 Bead L131 3221505601000 Bead L201 3210406471000 470nH L302 3221506601000 Bead L303 3221506181000 Bead L304 3221506601000 Bead L305 3221506601000 Bead...
  • Page 374 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description L412 3221505121010 Bead L413 3213306682000 6.8uH L501 3297106339000 Wire-wound inductor L502 3221506601080 Bead L503 3297106339000 Wire-wound inductor L504 3297106339000 Wire-wound inductor L505 3221506601080 Bead L506 3210106390000 39nH L507 3210305180000 18nH L508...
  • Page 375 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description L612 3221506181000 Bead L613 3290299222000 2.2uH L614 3217099153000 15uH L615 3290299222000 2.2uH L616 3290299222000 2.2uH L617 3221506181000 Bead L702 3221505121010 Bead L801 3221505121010 Bead L802 3221506181000 Bead L803 3221505121010 Bead L804...
  • Page 376 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description L9007 3217105010000 Wire-wound inductor L9008 3239999250000 Air-core coil L9010 3217105689000 6.8nH L9011 3217107470010 47nH L9014 3221506121000 Bead L9015 3210106470000 47nH L9016 3233099100000 Air-core coil L9017 3210306479000 4.7nH L9018 3210306479000 4.7nH L9019...
  • Page 377 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description L9032 3219906829010 8.2nH L9033 3210406471000 470nH L9034 3210105100000 10nH L9035 3210106820000 82nH L9037 3217105130000 13nH L9041 3001050000000 0Ω L9042 3001050000000 0Ω L9043 3210305829000 8.2nH L9044 3210305829000 8.2nH L9045 3210305689000 6.8nH Q102...
  • Page 378 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description Q402 3499000000150 Compound transistor Q403 3408002000000 NPN transistor Q603 3414001000040 NPN transistor Q604 3503020000030 N-MOSFET Q605 3505010000210 P-MOSFET Q607 3503020000030 N-MOSFET Q608 3503020000030 N-MOSFET Q609 3505010000210 P-MOSFET Q801 3403008000010 Q802 3403008000010...
  • Page 379 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description Q9019 3403999000000 Compound transistor Q9020 3403999000000 Compound transistor Q9021 3403999000000 Compound transistor Q9022 3403999000000 Compound transistor R102 3001051030000 10KΩ R103 3101050300000 R105 3001051030000 10KΩ R106 3001055620000 5.6KΩ R107 3001053910010 390Ω...
  • Page 380 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R123 3001051020000 1KΩ R124 3001052720010 2.7KΩ R125 3001052720010 2.7KΩ R127 3001051220090 1.2KΩ R128 3001053920000 3.9KΩ R129 3001051030000 10KΩ R130 3001051000000 10Ω R131 3001051000000 10Ω R132 3001055100020 51Ω R133 3001051030000 10KΩ...
  • Page 381 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description R149 3001052720010 2.7KΩ R151 3001052720010 2.7KΩ R152 3001053920000 3.9KΩ R153 3001052220000 2.2KΩ R154 3001052220010 2.2KΩ R155 3001053320000 3.3KΩ R203 3001051000000 10Ω R206 3001051000000 10Ω R207 3001053300000 33Ω R208 3001050000000 0Ω...
  • Page 382 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R249 3001051030000 10KΩ R250 3001050000000 0Ω R251 3001051040000 100KΩ R254 3001050000000 0Ω R255 3001053300000 33Ω R256 3001051030000 10KΩ R257 3001051010000 100Ω R258 3001051030000 10KΩ R259 3001053300000 33Ω R260 3001051520000 1.5KΩ...
  • Page 383 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description R323 3001054720000 4.7KΩ R324 3001053300000 33Ω R325 3001053300000 33Ω R326 3001053300000 33Ω R401 3001055100020 51Ω R402 3001051030000 10KΩ R403 3001051020000 1KΩ R404 3001056810000 680Ω R405 3001051030000 10KΩ R406 3001051020000 1KΩ...
  • Page 384 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R504 3001051030000 10KΩ R601 3001059130000 91KΩ R607 3001061000000 10Ω R611 3001051030000 10KΩ R613 3001051020000 1KΩ R614 3221506181000 Bead R617 3001054740010 470KΩ R618 3001051340000 130KΩ R620 3001051040000 100KΩ R621 3001054730010 47KΩ...
  • Page 385 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description R638 3001051040000 100KΩ R639 3001051040000 100KΩ R640 3001053940000 390KΩ R641 3001054740000 470KΩ R701 3001051020000 1KΩ R702 3001056830000 68KΩ R704 3001051010000 100Ω R705 3001051030050 10KΩ R706 3001051030050 10KΩ R707 3001053330000 33KΩ...
  • Page 386 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R806 3001051000000 10Ω R807 3001052030000 20KΩ R811 3001051030000 10KΩ R812 3001051030000 10KΩ R813 3001051540000 150KΩ R814 3001051540000 150KΩ R815 3001051840010 180KΩ R820 3001052020020 2KΩ R821 3001051010000 100Ω R823 3001051030000 10KΩ...
  • Page 387 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description R841 3001051030000 10KΩ R9001 3001050000000 0Ω R9002 3101054700010 47pF R9003 3001050000000 0Ω R9004 3101054700010 47pF R9005 3001050000000 0Ω R9006 3001051030000 10KΩ R9007 3001056800010 68Ω R9008 3001051010000 100Ω R9009 3001050000000 0Ω...
  • Page 388 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R9030 3001051520000 1.5KΩ R9031 3001052710000 270Ω R9032 3001051340000 130KΩ R9033 3001051020000 1KΩ R9035 3001050000000 0Ω R9036 3001051030000 10KΩ R9037 3001053330000 33KΩ R9038 3001051020000 1KΩ R9039 3001051010000 100Ω R9040 3001051020000 1KΩ...
  • Page 389 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description R9057 3001051540000 150KΩ R9058 3001051050000 1MΩ R9059 3001054740010 470KΩ R9062 3001051030000 10KΩ R9063 3001053300000 33Ω R9065 3001051030000 10KΩ R9066 3001051520000 1.5KΩ R9067 3001056820000 6.8KΩ R9068 3001053320000 3.3KΩ R9069 3001051030050 10KΩ...
  • Page 390 UHF5 (806-941MHz) Information Service Manual Ref. No. Print No. Part No. Description R9096 3001050000000 0Ω R9100 3101055600000 100pF R9101 3101055600000 100pF R9103 3233033900000 Air-core coil R9106 3221505601000 Bead RN256 3005051030010 10KΩ U1002 3616003000000 Switch IC U1007 3911500600000 Mixer U101 3616059000000 Switch IC U102 3605002057290...
  • Page 391 Service Manual UHF5 (806-941MHz) Information Ref. No. Print No. Part No. Description U316 3805000000030 EMI filter U317 3805000000030 EMI filter U318 3805000000030 EMI filter U319 3805000000030 EMI filter U320 3805000000030 EMI filter U321 3805000000030 EMI filter U322 3805000000030 EMI filter U401 3603999000000 IF processor...
  • Page 392 3701327610060 Crystal 1015 X203 3701019250040 TCXO 1016 Z501 3804157560000 GPS filter 1017 Z9001 3802733540030 Crystal filter 1018 / Main board PD70X/ PD70XG/ HD705/ HD705G Channel Board Ref. No. Part No. Description C1001 3101052710000 270PF C1002 3101052710000 270PF C1003 3101052710000 270PF...
  • Page 393 Service Manual UHF5 (806-941MHz) Information Ref. No. Part No. Description C1007 3101052710000 270PF C1010 3101052710000 270PF C1011 3101052710000 270PF C1012 3101052710000 270PF C1015 3101051040060 0.1UF C1016 3101051040060 0.1UF C1017 3101051040060 0.1UF D1001 3310040000000 ESD protection diode D1002 3307120100050 D1003 3310040000000 ESD protection diode D1004 3310040000000...
  • Page 394 UHF5 (806-941MHz) Information Service Manual Ref. No. Part No. Description Q1001 3403009000010 Compound transistor R1001 3001056810000 680Ω R1002 3001051210010 120Ω S1003 4301080000020 Momentary contact switch U1001 3805000000040 EMI filter U1002 3608006000030 Power management IC 41PD7002002B0 PD78X/ PD78XG/ HD785/ HD785G Channel Board Ref.
  • Page 395 Service Manual UHF5 (806-941MHz) Information Ref. No. Part No. Description C1016 3101051040060 0.1UF C1017 3101051040060 0.1UF D1001 3310040000000 ESD protection diode D1002 3307120100050 D1003 3310040000000 ESD protection diode D1004 3310040000000 ESD protection diode D1005 3310040000000 ESD protection diode D1006 3310040000000 ESD protection diode D1007 3310040000000...
  • Page 396 UHF5 (806-941MHz) Information Service Manual Ref. No. Part No. Description U1002 3608006000030 Power management IC 41PD7802006C0 PD78X/ PD78XG/ HD785/ HD785G Keyboard Ref. No. Part No. Description 3307990000260 3307990000260 3307990000260 3307990000260 3307990000260 3307990000260 3307990000260 3310040000010 ESD protection diode 3310040000010 ESD protection diode 5201016000010 Board-to-board connector 3001051010000...
  • Page 397 Service Manual UHF5 (806-941MHz) Information Ref. No. Part No. Description 3001051010000 100Ω...

  • Page 398: Troubleshooting Flow Chart

    UHF5 (806-941MHz) Information Service Manual 10.8 Troubleshooting Flow Chart Receiver Circuit...
  • Page 399 Service Manual UHF5 (806-941MHz) Information No receive R3.3V output is normal?[1] 3V3A output is normal?[2] Check Q9022. The static working point of Q9009 is Check Q9009. normal?[3] The static Check Q9017 working point of Q9017/Q9018 and Q9018. is normal?[4] Input IF signal Check Q403 and via U401 PIN47 to check The second LO is...
  • Page 400 UHF5 (806-941MHz) Information Service Manual Description of Normal Situations: [1] Output voltage at Q9022 PIN 3: about 3.25V. [2] Output voltage at U606 PIN5 or input voltage at Q9022 PIN4: about 3.3V. [3] Vbe: about 0.84V; Vce: about 2.65V (in the case of no signal reception). [4] For Q9018, Vbe: about 0.76V;...
  • Page 401 Service Manual UHF5 (806-941MHz) Information Transmitter Circuit...
  • Page 402 UHF5 (806-941MHz) Information Service Manual No power output Power supply Check the power works normally?[1] supply circuit. APC-OUT is APC-IN is Check the DAC normal?[2] normal?[3] output circuit. Replace Q9008 and Q9006. PS-TX and RT5V TX 5V voltage are normal?[5] is normal?[5] Check the power PS-APC 3.3V...
  • Page 403 Service Manual UHF5 (806-941MHz) Information Description of Normal Situations: [1] Voltage of the power supply: about 7.4V. [2] For low power, APC-OUT: 1.3-1.4V; for high power, APC-OUT: 1.5-1.8V. [3] For low power, APC-IN: 1.2-1.3V; for high power, APC-IN: 1.5-1.7V. [4] PS-APC: about 3.3V. [5] TX5V: about 5V;...
  • Page 404 UHF5 (806-941MHz) Information Service Manual FGU check Check the power 5VFGU, 3V3ARF, supply circuit. 3V3DRF are normal? Q106 and Q107 Q104 and Q108 VCO oscillates? Replace Q104 are normal?[1] are normal?[2] and Q108. Check Q104, Q108 and Replace Q106 peripheral components. and Q107.
  • Page 405 Service Manual UHF5 (806-941MHz) Information Description of Normal Situations: [1] During transmission (806-825/851-870) or reception (935-941), output voltage by Q107 PIN3: about During transmission (896-902/935-941) or reception (851-870), output voltage by Q106 PIN3: about [2] During transmission (806-825/851-870) or reception (935-941), voltage at Q108 E: about 2.1V. [2] During transmission (896-902/935-941) or reception (851-870), voltage at Q104 E: about 2.1V.

  • Page 406: Vhf (136-174Mhz) Information

    VHF (136-174MHz) Information Service Manual 11. VHF (136-174MHz) Information 11.1 Transmitter Circuit The transmitter circuit is mainly composed of:  RF power amplifier circuit  Low-pass filter circuit (for suppressing harmonics)  Auto power control circuit (APC) (including temperature detection circuit) Figure 11-1 Diagram of Transmitter Circuit 11.1.1 RF Power Amplifier Circuit...

  • Page 407: Low-Pass Filter Circuit

    Service Manual VHF (136-174MHz) Information Step 4 After processed by multiple amplifiers, the signal passes through an impedance matching circuit, so as to reduce output power loss due to impedance mismatch. Step 5 The signal passes through the TX/RX switch and goes to the low-pass filter. 11.1.2 Low-pass Filter Circuit The low-pass filter is a high-order Chebyshev filter composed of lumped-parameter inductors and...

  • Page 408: Receiver Front-End

    VHF (136-174MHz) Information Service Manual Pi Attenuator Figure 11-2 Diagram of Receiver Circuit 11.2.1 Receiver Front-end The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled via APC/TV1 level, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (Q9009).

  • Page 409: Receiver Back-End

    Service Manual VHF (136-174MHz) Information 11.2.2 Receiver Back-end Figure 11-3 Diagram of IF Processor The first IF signal (44.85MHz) output by the IF amplifier goes into AD9864 (U401) via Pin 47, where the signal is converted to the second IF signal (2.25MHz). Then the signal is converted to digital signal via ADC sampling, and output via the SSI interface.

  • Page 410: Working Principle Of Pll

    VHF (136-174MHz) Information Service Manual Figure 11-4 Diagram of FGU 11.3.1 Working Principle of PLL The 19.2MHz frequency generated by the reference crystal oscillator goes to PLL for division, generating the reference frequency (i.e. step frequency f1). Meanwhile, the frequency generated by VCO passes through the band-pass filter, and the second harmonic goes into the PLL, where frequency f2 is generated through frequency division.

  • Page 411: Direct Modulation

    Service Manual VHF (136-174MHz) Information There are two types of VCO: TX VCO and RX VCO. Both types control EMD22 to switch operating status via OMAP. RX VCO is composed of the oscillator loop and Q104, to provide LO signal. TX VCO is composed of the oscillator loop and Q108, to provide carrier for TX signal.

  • Page 412: Pcb View

    11.4 PCB View PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Top Layer...
  • Page 413 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G PCB View (Main Board) Bottom Layer...
  • Page 414 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Top Layer...
  • Page 415 PD70X/PD70XG/HD705/HD705G PCB View (Channel Board) Bottom Layer...
  • Page 416 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Top Layer...
  • Page 417 PD78X/PD78XG/HD785/HD785G PCB View (Channel Board) Bottom Layer...
  • Page 418 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Top Layer...
  • Page 419 PD78X/PD78XG/HD785/HD785G PCB View (Keyboard) Bottom Layer...

  • Page 420: Block Diagram

    11.5 Block Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (RF Section) Microstrip Low-pass Filter Tx/Rx Switch Pre-Drive2 Drive-stage Final-stage Pi Attenuator Pre-driver1 Matcher TV1/APC MOD1 Tx_VCO RX/TX RX/TX APC module VCO buffer amplifier TV1/APC 4CH DAC Rx_VCO Low-Noise Amp BATT+ Frequency Synthesizer module...
  • Page 421 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Baseband Section)
  • Page 422 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Block Diagram (Power Section) 1.6A/7.4V/5W RF PA 7.4V/1.6A RQA0002DNS 230mA/7.4V/Po=0.9W 1 /2 2.2V-18V 210mA/Po=0.89W/7.4V AF PA (TDA8547TS) 21mA/5VFGU TX:53mA/RX:29mA RX/TX 5VFGU 125uA-1000uA/5VFGU 5VA-RTC/ LDO: 5V VCCcp_main: Charge pump supply, 2.7V-5V(3 to 5 V); 150mA; VCO 3V3DRF VCCdigital: Digital supply, 2.7V-3V-3.3V;...

  • Page 423: Schematic Diagram

    11.6 Schematic Diagram PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Transmitter/Receiver) 5VRT D9011 D9011 DAN222 DAN222 R9020 R9020 4.7K 4.7K C9002 C9002 L9002 L9002 2SA1832 2SA1832 C9035 C9035 Q9021 Q9021 R9035 R9035 C9036 C9036 1000P 1000P C9003 C9003 C9004 C9004 C9005 C9005 R9042 R9042...
  • Page 424 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (CODEC) C834 C834 R829 R829 470K 470K 1V8D AF-CODEC-IN TONE-CODEC 3 C837 C837 0.01u 0.01u L821 L821 BLM15PD121SN1 BLM15PD121SN1 C840 C840 R838 R838 AF-50PIN-to-CODEC C821 C821 C846 C846 0.22u 0.22u 470P 470P R821 R821 R841 10K R841 10K...
  • Page 425 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Audio Amplifier) BAT+ L802 L802 BLM18PG181SN1 BLM18PG181SN1 C803 C803 C804 C804 C802 C802 22u/10V 22u/10V 0.22u 0.22u 270P 270P TP801 TP801 L803 L803 IN-SPK- R802 R802 C805 C805 R803 R803 C806 C806 180K 180K R801 R801 100p...
  • Page 426 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (DAC) 5VRT R712 R712 BLM15PD121SN1 BLM15PD121SN1 C705 C705 C706 C706 R709 R709 1000P 1000P 100k_F 100k_F C712 C712 R713 R713 R710 R710 100k_F 100k_F C703 C703 C704 C704 470P 470P 470p 470p R701 1K R701 1K MOD-VCO...
  • Page 427 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power) 5VFGU P607 P607 R607 R607 3V3ARF BAT+ U603 U603 PWR-SW+ L602 L602 L603 L603 RP102N331B*NC RP102N331B*NC L604 L604 F601 F601 BLM18PG181SN1 BLM18PG181SN1 VOUT BLM18PG181SN1*NC BLM18PG181SN1*NC 3V3DRF BLM18PG181SN1 BLM18PG181SN1 C611 C611 2.5A-32V 2.5A-32V C606 C606 R631 15K...
  • Page 428 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (AD9864) TP402 TP402 TP403 TP403 L403 BLM15PD121SN1 L403 BLM15PD121SN1 L402 L402 TP401 TP401 C448 C448 2FLO 2FLO 270n 270n C420 C420 C457 C457 Q402 Q402 0.01u 0.01u TP404 TP404 R406 R406 L412 BLM15PD121SN1 L412 BLM15PD121SN1 C446 C446...
  • Page 429 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Internal Interface) 3V3D R314 R314 R315 R315 3.3K 3.3K D303 D303 D305 D305 3.3K 3.3K EXT-MIC+ AF-CODEC-TO-50PIN U310 U310 3V3D AF-50PIN-to-CODEC EXT-MIC- D304 D304 D306 D306 IIC-SCL-Acce DVdd_IO SLC/SPC C311 C311 IIC-SDA-Acce SDA/SDI/SDO 0.1u 0.1u D318 D318...
  • Page 430 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP SI) 3V3D RN256 RN256 R256 R256 10K*4 10K*4 KB-R0 KP.R0/MPUIO8 KB-R1 SPI-CS2-IF SPIF.CS2/MPUIO4/uWIRE.CS2/LED2 KP.R1/MPUIO9 KB-R2 SPI-SCK-IF SPIF.SCK/MPUIO1 KP.R2/MPUIO10 KB-R3 SPI-DOUT-IF SPIF.DOUT/GPIO46/uWIRE.SDO KP.R3/MPUIO13 SPI-DIN-IF KB-R4 SPIF.DIN/GPIO47/uWIRE.SDI KP.R4/MPUIO15 C256 C256 C257 C257 C258 C258 C259 C259 470P 470P...
  • Page 431 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP MEN) M-A[1..24] U244 U244 SDRAM.A[0..12] U201A U201A SDRAM.A0 M-A1 M-A1 SDRAM.A0 FLASH.A1 1V8D SDRAM.A1 M-A2 M-A2 /CS2-LCD SDRAM.A1 FLASH.A2 SDRAM.A2 M-A3 /CS2-LCD M-A3 M-D0 SDRAM.A2 FLASH.A3 M-A1 SDRAM.A3 M-A4 M-A1 M-A4 M-D1 SDRAM.A3 FLASH.A4 SDRAM.A4 M-A5...
  • Page 432 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP IO) GPIO5/FLASH.CS2U POWER-KEY-DET 10 RESET-CODEC GPIO34/LCD.P13 POWER-CTL 10 GPIO7/UART2.RCV SEL-MIC GPIO32/LCD.P11 IO-TD-TEST GPIO8/TRST SEL1-ADC GPIO31/LCD.P10 GPIO16/FLASH.CS1U DISCHARGE-SW-TX 14 SEL2-ADC GPIO30/LCD.P9 EXT-PWR C288 C288 C295 C295 GPIO23/MCLKREQ DAV-CODEC GPIO29/LCD.P8 470P 470P 470P 470P C298 C298 470P 470P Acce-INT1 GPIO25/MCSI2.DOUT...
  • Page 433 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE) C205 C205 C206 C206 X203 X203 X201 X201 1000P 1000P SSP-T7F 12.5pF 20ppm SEIKO SSP-T7F 12.5pF 20ppm SEIKO CLK-OMAP/IF OE/ST OE/ST C202 C202 L201 L201 470n 470n 1000p 1000p C204 C204 C203 C203 C208 C208...
  • Page 434 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (FGU) PD780 VHF -FGU 5VFGU C104 C104 C105 C105 1000P 1000P 0.1u 0.1u L102 L102 82nH(绕线) 82nH(绕线) L104 L104 R102 R102 L105 L105 R108 R108 39nH(绕线) 39nH(绕线) 39nH(绕线) 39nH(绕线) U102 U102 LO 14 5V_RX_BPF R103 R103 charge...
  • Page 435 PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (External Interface) J304 J304 NC*JTAG NC*JTAG /TRST RTCK EMU0 EMU1 R301 R301 R304 R304 R305 R305 R306 R306 R307 R307 100K 100K 100K 100K 100K 100K 4.7K 4.7K 4.7K 4.7K 3V3D L301 L301 BLM15PD121SN1 BLM15PD121SN1 C306 C306...
  • Page 436 PD780 UHF Schematic Diagram(SW Board Circuit) PD70X/PD70XG/HD705/HD705G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003...
  • Page 437 PD780 UHF Schematic Diagram(SW Board Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Channel Board) D1002 D1002 3V3DRF S1001 S1001 S1002 S1002 Q1001 Q1001 12-22RG/TR8 12-22RG/TR8 R1001 120 R1001 120 LED1 PWR-SW+ PWR-SW- PWR-SW- VOL-H LED2 R1002 120 R1002 120 D1001 D1001 D1003 D1003 D1005 D1005 D1007...
  • Page 438 PD780 UHF Schematic Diagram(Keyboard Circuit) PD78X/PD78XG/HD785/HD785G Schematic Diagram (Keyboard) S1701 S1701 S1702 S1702 S1703 S1703 S1704 S1704 S1705 S1705 Cancel KB-R4 S1706 S1706 S1707 S1707 S1708 S1708 S1709 S1709 S1710 S1710 DOWN KB-R3 S1711 S1711 S1712 S1712 S1713 S1713 S1714 S1714 S1715 S1715...

  • Page 439: Parts List

    Service Manual VHF (136-174MHz) Information 11.7 Parts List PD70X/ PD70XG/ PD78X/ PD78XG/ HD705/ HD705G/ HD785/ HD785G Main Board Ref. No. Print No. Part No. Description ANT1 6201847000000 Antenna spring plate C100 3101058200000 82PF C101 3101054710010 470PF C102 3101051040060 0.1UF C103...
  • Page 440 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C120 3101051020010 1000PF C121 3101051040060 0.1UF C122 3101060400010 C123 3101060800010 C124 3101051020010 1000PF C125 3101060500010 C126 3101051020010 1000PF C127 3101051500020 15PF C128 3101060800010 C129 3101064790010 4.7PF C130 3101062700010 27PF C131 3101051200020...
  • Page 441 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C141 3101051040060 0.1UF C142 3101051020010 1000PF C143 3101060600010 C144 3101060500010 C145 3101061300000 13PF C146 3101061300000 13PF C147 3101060600010 C148 3101065600000 56PF C149 3101061590010 1.5PF C150 3101062200010 22PF C151 3101052710000 270PF C152...
  • Page 442 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C162 3101051020010 1000PF C163 3101051020010 1000PF C164 3101051040060 0.1UF C165 3101051040060 0.1UF C166 3101051040060 0.1UF C167 3101051040060 0.1UF C168 3101051020010 1000PF C169 3101051040060 0.1UF C170 3101051020010 1000PF C172 3101051020010 1000PF C173...
  • Page 443 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C185 3104072250060 2.2UF C186 3101052700000 27PF C187 3101054710010 470PF C188 3101050300000 C189 3101053300000 33PF C190 3101051510000 150PF C191 3101054710010 470PF C192 3101050200010 C193 3101051020010 1000PF C194 3101051800010 18PF C195 3101050300000 C196...
  • Page 444 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C211 3101051020010 1000PF C212 3101052240010 0.22UF C213 3101053920000 3900PF C214 3101054710010 470PF C215 3101051030020 0.01UF C216 3101052240010 0.22UF C217 3101052240010 0.22UF C218 3101052240010 0.22UF C219 3101053920000 3900PF C220 3101054710010 470PF C221...
  • Page 445 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C234 3101052240010 0.22UF C236 3101051050160 C237 3101054710010 470PF C238 3101052240010 0.22UF C239 3101053920000 3900PF C240 3101053920000 3900PF C241 3101053920000 3900PF C242 3101052240010 0.22UF C243 3101054710010 470PF C244 3101054710010 470PF C245 3101053920000...
  • Page 446 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C260 3101055610000 560PF C261 3101055610000 560PF C262 3101052710000 270PF C263 3101054710010 470PF C264 3101054710010 470PF C265 3101051010030 100PF C266 3101054710010 470PF C268 3101054710010 470PF C269 3101054710010 470PF C270 3101052710000 270PF C271...
  • Page 447 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C282 3101054710010 470PF C283 3101054710010 470PF C284 3101054710010 470PF C285 3101052710000 270PF C286 3101054700010 47PF C287 3101054710010 470PF C288 3101054710010 470PF C289 3101051520000 1500PF C290 3101052710000 270PF C291 3101052710000 270PF C292...
  • Page 448 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C303 3101054710010 470PF C304 3101051520000 1500PF C305 3101054710010 470PF C310 3101051040060 0.1UF C311 3101051040060 0.1UF C312 3101051050160 C313 3101052710000 270PF C314 3101051050160 C315 3101052710000 270PF C316 3101052710000 270PF C317 3101052710000 270PF...
  • Page 449 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C332 3101054710010 470PF C333 3101054710010 470PF C334 3101052710000 270PF C335 3101054710010 470PF C336 3101054710010 470PF C420 3101051200020 12PF C422 3101051040060 0.1UF C423 3101051050160 C425 3101054700010 47PF C426 3101051030020 0.01UF C427 3101052210010...
  • Page 450 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C438 3101051010030 100PF C439 3101051010030 100PF C440 3101051030020 0.01UF C441 3101051040060 0.1UF C442 3101061030010 0.01UF C443 3101063900000 39PF C444 3101054710010 470PF C445 3101051040060 0.1UF C446 3101051040060 0.1UF C447 3101051030020 0.01UF C448...
  • Page 451 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C460 3101064700000 47PF C461 3101068200000 82PF C462 3101051040060 0.1UF C463 3101072240000 0.22UF C464 3101051040060 0.1UF C465 3101051040060 0.1UF C466 3101051040060 0.1UF C467 3101062250000 2.2UF C468 3104076840020 0.68UF C469 3101052710000 270PF C470...
  • Page 452 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C520 3101050100030 C521 3101051210000 120PF C522 3101051040060 0.1UF C523 3101051040060 0.1UF C524 3101055600000 56PF C525 3101051040060 0.1UF C526 3101051050160 C527 3101050200010 C601 3101062250000 2.2UF C602 3101051010030 100PF C603 3101074750000 4.7UF C604...
  • Page 453 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C620 3101051010030 100PF C621 3101074750000 4.7UF C622 3101051040060 0.1UF C623 3101061050060 C624 3101062250000 2.2UF C625 3101051040060 0.1UF C626 3101051040060 0.1UF C627 3110081060000 10uF C628 3101062240000 0.22UF C629 3101074750000 4.7UF C630 3101051040060...
  • Page 454 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C646 3110061050000 C647 3101051040060 0.1UF C648 3101061050060 C649 3101062250000 2.2UF C650 3101053920000 3900PF C651 3101051040060 0.1UF C652 3101054710010 470PF C653 3101062250000 2.2UF C654 3110081060000 10uF C655 3101062240000 0.22UF C656 3101051040060 0.1UF...
  • Page 455 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C669 3101061050060 C670 3101062250000 2.2UF C671 3101051040060 0.1UF C672 3101052000020 20PF C674 3101052210010 220PF C676 3101062240000 0.22UF C677 3101061050060 C678 3101062240000 0.22UF C679 3101051040060 0.1UF C680 3101054710010 470PF C681 3101054710010 470PF...
  • Page 456 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C705 3101051020010 1000PF C706 3101051050160 C707 3101051050160 C708 3101052210020 220PF C709 3101051020010 1000PF C710 3101051040060 0.1UF C711 3101051050160 C712 3101051050160 C801 3101051040060 0.1UF C802 3101071060010 10UF C803 3101052240010 0.22UF C804 3101052710000...
  • Page 457 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C820 3101053920000 3900PF C821 3101052240010 0.22UF C822 3101051030020 0.01UF C823 3101053920000 3900PF C824 3101052240010 0.22UF C825 3101062250000 2.2UF C826 3101051030020 0.01UF C827 3101051030020 0.01UF C828 3101062250000 2.2UF C831 3101051050160 C832 3101051050160...
  • Page 458 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C845 3101054710010 470PF C846 3101054710010 470PF C847 3101051050160 C848 3101054710010 470PF C849 3101054710010 470PF C850 3101051040060 0.1UF C851 3101054710010 470PF C852 3101051040060 0.1UF C853 3101054710010 470PF C856 3101054710010 470PF C857 3101054710010...
  • Page 459 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C9014 3101051020010 1000PF C9015 3101062200010 22PF C9016 3101051020010 1000PF C9017 3101062200010 22PF C9018 3101051020010 1000PF C9020 3101051040060 0.1UF C9021 3101064700000 47PF C9023 3101061000000 10PF C9024 3101063000010 30PF C9025 3101051020010 1000PF C9027...
  • Page 460 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C9039 3101051020010 1000PF C9040 3101054700010 47PF C9041 3101051040060 0.1UF C9042 3101051020010 1000PF C9043 3101051040060 0.1UF C9044 3101051030020 0.01UF C9045 3101051020010 1000PF C9046 3101051040060 0.1UF C9047 3101051020010 1000PF C9048 3101054710010 470PF C9049...
  • Page 461 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C9064 3101051020010 1000PF C9065 3101051520000 1500PF C9066 3101051030020 0.01UF C9067 3101051020010 1000PF C9068 3101051030020 0.01UF C9069 3101054710010 470PF C9071 3101051040060 0.1UF C9072 3101051030020 0.01UF C9075 3101051020010 1000PF C9077 3101051800010 18PF C9078...
  • Page 462 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description C9090 3101051030020 0.01UF C9091 3101051040060 0.1UF C9092 3101051040060 0.1UF C9093 3101051020010 1000PF C9095 3101051050160 C9096 3101051020010 1000PF C9097 3101051040060 0.1UF C9098 3101051020010 1000PF C9099 3101051800010 18PF C9100 3101051050160 C9101 3101052000020 20PF...
  • Page 463 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description C9112 3101052200010 22PF C9113 3101055600000 56PF C9114 3101055600000 56PF C9115 3101051200020 12PF C9116 3101051000020 10PF C9117 3101054710010 470PF C9118 3101055600000 56PF C9120 3101051040060 0.1UF C9121 3101051020010 1000PF C9122 3101055600000 56PF C9123...
  • Page 464 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description D101 3304010100180 Varactor D102 3304010100990 Varactor D103 3304010400000 Varactor D104 3303990000060 Switching diode D105 3303990000060 Switching diode D106 3304010400000 Varactor D107 3304010100990 Varactor D108 3304010100990 Varactor D109 3304010100180 Varactor D110 3304010100990...
  • Page 465 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description D307 3399040600020 ESD protection diode D308 3399040600020 ESD protection diode D309 3399040600020 ESD protection diode D310 3399040600020 ESD protection diode D318 3399040600010 ESD protection diode D401 3304060300050 Varactor D402 3304010100220 Varactor...
  • Page 466 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description D9013 3304060300040 Varactor D9017 3301250300000 Schottky barrier diode F601 4099000000050 Fuse F602 4010000000010 Resumable fuse J1601 5201050100030 Board-to-board connector J311 5201030000040 Board-to-board connector J313 5202002100200 Board-to-board connector J601 5205003100020 Battery connector J821...
  • Page 467 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description L113 3217106781000 780nH L114 3217106781000 780nH L115 3217106781000 780nH L116 3217106781000 780nH L117 3217107680010 68nH L118 3217107470000 47nH L119 3217106781000 780nH L120 3221505121010 Bead L121 3221505121010 Bead L122 3221505121010 Bead L123...
  • Page 468 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description L302 3221506601000 Bead L303 3221506181000 Bead L304 3221506601000 Bead L305 3221506601000 Bead L401 3215099103000 10uH L402 3210406271000 270nH L403 3221505121010 Bead L404 3215099103000 10uH L405 3221505121010 Bead L406 3297107391000 390nH L407...
  • Page 469 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description L505 3221506601080 Bead L506 3210106390000 39nH L507 3210305180000 18nH L508 3210305829000 8.2nH L509 3210305829000 8.2nH L601 3221506181000 Bead L602 3221506181000 Bead L603 3221506181000 Bead L605 3221506181000 Bead L606 3221506181000 Bead L607...
  • Page 470 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description L801 3221505121010 Bead L802 3221506181000 Bead L803 3221505121010 Bead L804 3221505121010 Bead L805 3221505121010 Bead L816 3237199270000 Air-core coil L820 3221506601000 Bead L821 3221505121010 Bead L822 3221505121010 Bead L823 3221506601000 Bead...
  • Page 471 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description L9011 3210209102010 L9012 3212107222000 2.2uH L9013 3233099470000 Air-core coil L9014 3221506121000 Bead L9015 3237199270000 Air-core coil L9016 3210306270000 27nH L9017 3210106360000 36nH L9018 3217106390010 39nH L9019 3231301030000 Air-core coil L9020 3221505121010 Bead...
  • Page 472 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description L9033 3210406471000 470nH L9035 3237199270000 Air-core coil L9036 3001052790000 2.7Ω Q102 3408002000000 NPN transistor Q103 3403999000000 Compound transistor Q104 3408002000080 NPN transistor Q105 3403003000060 NPN transistor Q106 3403999000000 Compound transistor Q107 3403999000000...
  • Page 473 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description Q802 3403008000010 Q9001 3403014000020 Compound transistor Q9002 3408002000000 NPN transistor Q9003 3504990000040 MOSFET Q9004 3406001000090 NPN transistor Q9005 3504990000010 MOSFET Q9006 3410001000020 PNP transistor Q9007 3403008000010 Q9008 3403008000010 Q9009 3418001000010 NPN transistor...
  • Page 474 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R107 3001053310000 330Ω R108 3001053320000 3.3KΩ R109 3001051040000 100KΩ R110 3001058220000 8.2KΩ R111 3001051010000 100Ω R112 3001055110000 510Ω R113 3001051020000 1KΩ R114 3001051020000 1KΩ R115 3001051810010 180Ω R116 3001054720000 4.7KΩ...
  • Page 475 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R130 3001051000000 10Ω R131 3001051000000 10Ω R132 3001055620000 5.6KΩ R133 3001051030050 10KΩ R134 3001051000000 10Ω R135 3001051020000 1KΩ R136 3001057500000 75Ω R138 3001053300000 33Ω R139 3001051020000 1KΩ R140 3001052220000 2.2KΩ...
  • Page 476 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R209 3001051000000 10Ω R220 3001051010000 100Ω R221 3001051010000 100Ω R222 3001051010000 100Ω R223 3001053300000 33Ω R224 3001051010000 100Ω R225 3001051010000 100Ω R226 3001051010000 100Ω R241 3001051030050 10KΩ R242 3001051030050 10KΩ...
  • Page 477 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R261 3001051530010 15KΩ R262 3001051530010 15KΩ R265 3001054710000 470Ω R313 3001054710000 470Ω R314 3001053320000 3.3KΩ R315 3001053320000 3.3KΩ R316 3001051030050 10KΩ R317 3001051030050 10KΩ R321 3099063018000 3.01Ω R322 3001054720000 4.7KΩ...
  • Page 478 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R408 3001053910000 390Ω R409 3001054720000 4.7KΩ R410 3001061030010 10KΩ R411 3001053910000 390Ω R412 3001051040000 100KΩ R413 3001051820000 1.8KΩ R414 3001052720010 2.7KΩ R415 3001061030010 10KΩ R416 3001058210000 820Ω R501 3001054710000 470Ω...
  • Page 479 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R620 3001051040000 100KΩ R621 3001054730010 47KΩ R622 3221506181000 Bead R623 3001051040000 100KΩ R624 3001051040000 100KΩ R627 3001054730010 47KΩ R628 3001054730010 47KΩ R629 3001052720010 2.7KΩ R630 3001054730010 47KΩ R631 3001051530010 15KΩ...
  • Page 480 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R711 3001051030050 10KΩ R712 3221505121010 Bead R713 3001051010000 100Ω R714 3001051030050 10KΩ R801 3001051000000 10Ω R802 3001051840000 180KΩ R803 3001051840000 180KΩ R804 3001051030050 10KΩ R805 3001051030050 10KΩ R806 3001051000000 10Ω...
  • Page 481 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R828 3001051530010 15KΩ R829 3001054740010 470KΩ R830 3001053330000 33KΩ R831 3001051020000 1KΩ R832 3001051020000 1KΩ R833 3001051020000 1KΩ R835 3001051020000 1KΩ R838 3001051030050 10KΩ R841 3001051030050 10KΩ R9001 3001052710010 270Ω...
  • Page 482 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R9015 3001053310000 330Ω R9016 3001051510000 150Ω R9017 3001051010000 100Ω R9018 3001056810000 680Ω R9019 3001053320000 3.3KΩ R9020 3001054720000 4.7KΩ R9021 3001054700000 47Ω R9022 3001052200000 22Ω R9023 3001053920000 3.9KΩ R9024 3001056820000 6.8KΩ...
  • Page 483 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R9037 3001053330000 33KΩ R9038 3001051020000 1KΩ R9039 3001051010000 100Ω R9040 3001051020000 1KΩ R9041 3001054720000 4.7KΩ R9042 3001053320000 3.3KΩ R9043 3001053330000 33KΩ R9044 3001053320000 3.3KΩ R9045 3001051050000 1MΩ R9046 3001054740010 470KΩ...
  • Page 484 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description R9059 3001054740010 470KΩ R9060 3001051040000 100KΩ R9061 3001051040000 100KΩ R9062 3001051040000 100KΩ R9063 3001053310000 330Ω R9065 3001051040000 100KΩ R9066 3001051520000 1.5KΩ R9067 3001056820000 6.8KΩ R9068 3001053320000 3.3KΩ R9071 3001053310000 330Ω...
  • Page 485 Service Manual VHF (136-174MHz) Information Ref. No. Print No. Part No. Description R9100 3001051540000 150KΩ R9101 3001051540000 150KΩ R9102 3001050000000 0Ω RN256 3005051030010 10KΩ RN261 3001052230020 22K*2 T9001 5406000000200 Transformer T9002 5406000000200 Transformer U101 3616059000000 Switch IC U102 3605002057290 Operational amplifier U103 3604019000000 PLL IC...
  • Page 486 VHF (136-174MHz) Information Service Manual Ref. No. Print No. Part No. Description U318 3805000000030 EMI filter U319 3805000000030 EMI filter U320 3805000000030 EMI filter U321 3805000000030 EMI filter U322 3805000000030 EMI filter U401 3603999000000 IF processor U501 3609999000300 GPS LNA U502 1615000001650 GPS module...
  • Page 487 Shielding can for crystal oscillator 1021 / 6201915000000 Shielding can for antenna spring plate 1022 / 6201935000000 Shielding can for switching power 1023 / Main board PD70X/ PD70XG/ HD705/ HD705G Channel Board Ref. No. Part No. Description R1002 3001051210010 120Ω...
  • Page 488 VHF (136-174MHz) Information Service Manual Ref. No. Part No. Description C1001 3101052710000 270PF C1002 3101052710000 270PF C1003 3101052710000 270PF C1004 3101052710000 270PF C1005 3101052710000 270PF C1006 3101052710000 270PF C1007 3101052710000 270PF C1010 3101052710000 270PF C1011 3101052710000 270PF C1012 3101052710000 270PF D1001 3310040000000 ESD protection diode...
  • Page 489 Service Manual VHF (136-174MHz) Information Ref. No. Part No. Description J1001 5201016100040 Board-to-board connector S1003 4301080000020 Momentary contact switch 41PD7002002B0 PCB R1001 3001056810000 680Ω C1015 3101051040060 0.1UF C1016 3101051040060 0.1UF C1017 3101051040060 0.1UF L1001 3221506181000 Bead U1002 3608006000030 Power management IC PD78X/ PD78XG/ HD785/ HD785G Channel Board Ref.
  • Page 490 VHF (136-174MHz) Information Service Manual Ref. No. Part No. Description D1001 3310040000000 ESD protection diode D1003 3310040000000 ESD protection diode D1004 3310040000000 ESD protection diode D1005 3310040000000 ESD protection diode D1006 3310040000000 ESD protection diode D1007 3310040000000 ESD protection diode D1008 3310040000000 ESD protection diode...
  • Page 491 Service Manual VHF (136-174MHz) Information PD78X/ PD78XG/ HD785/ HD785G Keyboard Ref. No. Part No. Description 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3001051010000 100Ω 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED 3307990000260 LED 3310040000010 ESD protection diode 3310040000010 ESD protection diode...

  • Page 492: Troubleshooting Flow Chart

    VHF (136-174MHz) Information Service Manual 11.8 Troubleshooting Flow Chart Receiver Circuit...
  • Page 493 Service Manual VHF (136-174MHz) Information Description of Normal Situations: [1] Output voltage at Q9019 PIN3: about 4.95V. [2] Output voltage at U605 PIN4 or input voltage at Q9019 PIN4: about 5V. [3] Vbe: about 0.74V; Vce: about 2.5V (in the case of no signal reception). [4] For Q9018, Vbe: about 0.76V;...
  • Page 494 VHF (136-174MHz) Information Service Manual Transmitter Circuit...
  • Page 495 Service Manual VHF (136-174MHz) Information Description of Normal Situations: [1] Voltage of the power supply: about 7.4V. [2] For low power, APC-OUT: 1.8-2.1V; for high power, APC-OUT: 2.4-2.8V. [3] For low power, APC-IN: 1-1.3V; for high power, APC-IN: 1.8-2.1V. [4] PS-APC: about 3.3V. [5] TX5V: about 5V;...
  • Page 496 VHF (136-174MHz) Information Service Manual FGU check Check the power 5VFGU, 3V3ARF, supply circuit. 3V3DRF are normal? Q106 and Q107 Q104 and Q108 VCO oscillates? Replace Q104 are normal?[1] are normal?[2] and Q108. Check Q104, Q108 and Replace Q106 peripheral components. and Q107.
  • Page 497 Service Manual VHF (136-174MHz) Information Description of Normal Situations: [1] During transmission, output voltage by Q107 PIN3: about 4V. During reception, output voltage by Q106 PIN3: about 4V. [2] During transmission, voltage at Q108 E: about 1.8V. During reception, voltage at Q104 E: about 1.8V. [3] The CV value varies with frequencies.

  • Page 498: Disassembly And Assembly

    Disassembly and Assembly Service Manual 12. Disassembly and Assembly The disassembly and assembly operations for PD70X/ PD70XG/ HD705/ HD705G and PD78X/ PD78XG/ HD785/ HD785G are similar. This section illustrates based on PD78X/ PD78XG/ HD785/ HD785G. 12.1 Disassembling the Chassis Step 1 Turn off the radio, and remove the two screws on the sides of the radio.

  • Page 499: Assembly

    Service Manual Disassembly and Assembly Step 2 Remove the screws on the LCD board (for PD70X/ PD70XG/ HD705/ HD705G, please remove the screws on the small board). Step 3 Remove the screws on the main board. Step 4 Take the main board down the chassis.

  • Page 500: Exploded View

    13BExploded View Service Manual 13. Exploded View PD70X/ PD70XG/ HD705/ HD705G Part Number Description Qty. 6001277000000 Accessory jack cover 6001073000000 Light guide 6001069000010 Volume control knob 16010435H0010 Stubby Antenna...
  • Page 501 Service Manual 13BExploded View Part Number Description Qty. 6001068000010 Channel selector knob 6100502000000 Emergency key 7209002501000 Nut for antenna 7206002500200 Nut for volume switch Channel board 7207002201000 Nut for encoder switch 7000218000000 Stud 1300PD7000090 7102003500210 Machine screw Semi-finished main board 6201848000000 Motor fixing sheet 5402000000060...
  • Page 502 13BExploded View Service Manual Part Number Description Qty. 6100442000000 Silicone rubber PTT key 7102004000400 Machine screw 7400264000000 Speaker felt 6001063000010 Front case Note Parts that are not marked with Part No. may vary with the radio frequency band.
  • Page 503 Service Manual 13BExploded View PD78X/ PD78XG/ HD785/ HD785G Part Number Description Qty. 7400320000020 LCD lens 6001071000000 Front cover 6100441000000 Numeric keypad 7300044000010 Metal dome for function key 6001277000000 Accessory jack cover 6001065000010 Front case...
  • Page 504 13BExploded View Service Manual Part Number Description Qty. 6001073000000 Light guide 6001069000010 Volume control knob 16010435H0010 Stubby antenna 6001068000010 Channel selector knob 6100502000000 Emergency key 7400184000000 Waterproof MIC net 7400329000000 MIC pad 7500346000000 PORON 7206002500200 Nut for volume switch 6100111000010 Silicone rubber MIC cover 7207002201000 Nut for encoder switch...
  • Page 505 Service Manual 13BExploded View Part Number Description Qty. 1300PD7800000 50PIN B2B connector 7102003500210 Machine screw Semi-finished channel board 7000218000000 Stud Semi-finished main board 6100527100000 Waterproof ring for machine screw 7102009000020 Machine screw 7400296000010 Speaker felt Note Parts that are not marked with Part No. may vary with the radio frequency band.

  • Page 506: Packing Guide

    Packing Guide Service Manual 14. Packing Guide This section takes PD78X/ PD78XG/ HD785/ HD785G for example.

  • Page 507: Specifications

    Analog: 11 hours (UHF); 10 hours (VHF)  Digital: 12.5 hours (UHF); 12 hours (VHF)  Operating Temperature -30℃～+60℃ Dimensions (H×W×D) PD70X/ PD70XG/ HD705/ HD705G: 125×55×35 mm/  4.921×2.165×1.378 inch (with standard battery, without antenna) PD78X/ PD78XG/ HD785/ HD785G: 125×55×37 mm/ ...
  • Page 508 Specifications Service Manual Weight (with antenna & PD70X/ PD70XG/ HD705/ HD705G: 335g/ 0.74lb (UHF);  standard battery) 340g/ 0.75lb (VHF) PD78X/ PD78XG/ HD785/ HD785G: 355g/ 0.78lb (UHF);  360g/ 0.79lb (VHF) Frequency Stability ±1.5ppm Receiver Analog  0.3μV (12dB SINAD) ...
  • Page 509 Service Manual Specifications ±4.0kHz@20kHz  ±5.0kHz@25kHz  40dB@12.5kHz  FM Noise 43dB@20KHz  45dB@25kHz  Audio Distortion ≤3% GPS (open area) TTFF (Time To First Fix) Cold <1 minute Start TTFF (Time To First Fix) Hot <10 seconds Start Horizontal Accuracy <10 meters All Specifications are tested according to applicable standards, and subject to change without notice due to continuous development.

  • Page 510: Appendix

    Appendix Service Manual 16. Appendix UHF1 Blind Spot UHF1 (400-470MHz) Blind Spot (MHz) 403.2 422.4 441.6 460.8 434.7 463.275 407.4625 407.475 411.725 411.7375 424.5375 426.6625 428.8 430.9375 435.2 439.4625 439.475...

  • Page 511: Table 16-1 Uhf1 Blind Spot

    Service Manual Appendix UHF1 (400-470MHz) Blind Spot (MHz) 443.7375 452.2625 452.275 456.525 456.5375 458.6625 465.0625 465.075 Table 16-1 UHF1 Blind Spot Note Blind spots 11-31 are for R1.0 radios. UHF2 Blind Spot UHF2 (450-520MHz) Blind Spot (MHz) 460.8 518.4 499.2 Table 16-2 UHF2 Blind Spot UHF3 Blind Spot UHF3 (350-400MHz) Blind Spot (MHz)

  • Page 512: Table 16-3 Uhf3 Blind Spot

    Appendix Service Manual UHF3 (350-400MHz) Blind Spot (MHz) 366.6 353.8 369.8 385.8 393.675 Table 16-3 UHF3 Blind Spot UHF5 Blind Spot UHF5 (806-941MHz) Blind Spot (MHz) 867.3 869.7 Table 16-4 UHF5 Blind Spot VHF Blind Spot VHF (136-174MHz) Blind Spot (MHz) 140.7 153.6 Table 16-4 VHF Blind Spot...
  • Page 513 Hytera Communications Corp., Ltd. 201 Hytera Corp., Ltd. All Rights Reserved. Address: HYT Tower, Hi-Tech Industrial Park North, Beihuan RD., Nanshan District, Shenzhen, China Postcode: 518057 http://www.hytera.com 1616300000160 2012-04-10 F03152...

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