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Service Manual Preface 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: RD98X (X may indicate 2, 5, 6 or 8.)
Service Manual 1. Revision History Version Date Description R2.0 09-2010 Initial Release R3.5 06-2011 VHF, UHF2 and UHF3 service information is included.
Service Manual 2. 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.
No part of this manual may be copied, modified, translated, or distributed in any manner without the express written permission of us. If you have any suggestions or would like to learn more details, please visit our website at: http://www.hytera.com.
Service Manual 5. Product Controls Front Panel Part Name Part Name Accessory Jack Slot 1 RX Indicator Volume Control Knob / Power Indicator Alarm Indicator Repeater Mode Indicator Programmable Key Analog Mode Indicator LCD Display Slot 2 RX Indicator Channel Up (CH+) Slot 2 TX Indicator Navigation Knob Digital Mode Indicator...
Service Manual 6. Baseband Section 6.1 Front Panel 6.1.1 Overview The front panel is the control panel, where you can see keys, Volume Control knob, Navigation knob, LED indicator, LCD display and 10-Pin interface. The front panel is connected to the baseband board via 40-Pin FFC.
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Service Manual 6.1.3 LCD Display To enhance LCD refreshing rate, parallel data interface is used. It connects to EMIFS data bus of TX OMAP5912 (U102) and the chip select is subject to the control of FLASH.CS2 . See the following figure: D0 −...
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Service Manual matrix with Pin 10. PTT input 3.3V CMOS, valid for low level This pin can output received audio, Handset output when Handset is checked in the CPS. When this pin is used for USB, USB of USB0_D- DB26 will be disabled For grounding USB_VBUS 5V/500mA...
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Service Manual VOL_GPIO1 Volume control knob input VOL_GPIO2 Volume control knob input KNOB_C Navigation knob input BACKLED_CTRL Backlight control signal output LCD reset signal OUT_TX KB_C0 Keypad matrix signal output KB_C1 KB_C2 KB_R0 Keypad matrix signal input KB_R1 DC_PWR_LED_CTRL DC power LED control LED_S/P_EN IO chip select signal S/P_CLK...
Service Manual 6.2 Main Board 6.2.1 Overview Baseband board consists of main chip (TX OMAP and RX OMAP), audio processing chip (CODEC) and peripheral equipment. See the following figure: Figure 6-5 Baseband Block Diagram As a highly integrated hardware platform, OMAP5912 incorporates 2 processors: ARM+DSP. The function of RX OMAP and TX OMAP is described below: RX OMAP5912 (1) ARM: Reserved.
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Service Manual 6.2.2 Power Supply Description Both PA circuit and baseband circuit are powered by the external power supply directly. The power supply circuit for the baseband board supplies power for the baseband circuit and its auxiliary modules, and provides 9.3V voltage for the exciter board and RX board. After the DC power supply is connected, the baseband board is powered up, and provides 13.6V voltage for the external development interface via OMPA control.
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Service Manual After going through the filter and protection circuit, the 13.6V power supply will power external devices via the expansion interface. The current may be up to 1A. For the 9V3A power supply, it is supplied by U821, and output by ADJ with current up to 1A. It is used to power part of the exciter, RX and baseband circuit.
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Service Manual After making response to power-up reset, OMAP5912 will output RST_OUT signal, and maintain low level for some time to reset the peripheral equipment (NOR Flash) of OMAP. For CODEC chip (U501), its resetting is subject to MPUIO6 of TX OMAP. The reset sequence of OMAP5912 is shown below: Figure 6-8 Reset Sequence 6.2.4 Clock OMAP5912 requires two clocks: system clock and 32K clock.
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Service Manual For the built-in and external clock of OMAP2912, there are two reset modes: Reset Mode0 and Reset Mode1. Reset Mode0 is adopted for this system. As for this product, system clock uses external clock, while 32K clock uses built-in clock. See the following figure: Figure 6-10 Clock Connection Block Diagram 6.2.5 Memory OMAP5912 provides two types of external memory interfaces: external memory interface slow (EMIFS)
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Service Manual AD9864 to receive demodulation signal from AD9864, and TX OMAP McBSP2 is reserved for SPI interface of RX DAC TLV5614. McBSP2 of TX OMAP is used to connect SSI interface of TX DAC TLV5614. TLV5614 works in Slave mode and is managed by DSP. McBSP3 is used to connect RX OMAP and TX OMAP for data transmission.
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Service Manual 3V3D SPIF.CS2(T19) SPIF.SCK(U19) SKY72310 SPIF.DOUT(R18) Data RX OMAP5912 3V3D U202 SPIF.CS1 (N15) AD9864 Figure 6-13 RX OMAP SPI Connection Block Diagram (2) TX OPMAP5912 SPI Interface TX OMAP SPI is used to configure RX DAC TLV5614 (U303) and TX PLL chip (SKY72310). This chip is controlled by CS2 and managed by DSP.
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Service Manual MCSI1.SYNC(W8) MCSI1.CLK(M15) TX/RX SKY72310 MCSI1.DOUT(Y8) Data TX/RX OMAP5912 Figure 6-15 Diagram of MCSI Interface 6.2.9 I OMAP5912 provides one I C interface, and supports communication rate up to 400Kbps. TX OMAP I interface connects with PMU to dynamically adjust PMU voltage output. It works in Master mode. See the following figure: TX OMAP5912 U102...
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Service Manual TLV320AIC29 U501 UWIRE.SDO(H19) MOSI UWIRE.SCLK(J15) SCLK UWIRE.SDI(J14) MISO UWIRE.CS0 (J18) TX OMAP5912 U102 DATA IN DATA OUT I/O CLK TLV1548 U301 UWIRE.CS3 (J19) GPIO37(M19) CSTART GPIO2(D15) Figure 6-17 Diagram of MICROWIRE Connection 6.2.11 USB OMAP processor provides 3 USB interfaces with rate of 1.5Mbps or 12Mbps. Available modes include Host and Device.
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Service Manual DB9(J601) USB_D- USB_D+ DB26(J701) OMAP5912 U102 USB0_DM(R8) USB_D- USB0_DP(P9) USB_D+ 10pin Jack USB_D- USB_D+ Figure 6-18 Diagram of USB Interface 6.2.12 UART OMAP5912 has 3 UART interfaces: UART1, UART2 and UART3. It supports hardware flow control. The communication rate can be up to 1.5Mbps. See the following figure: TX OMAP5912 (TX) MAX3232...
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Service Manual 6.2.13 GPS (Reserved) The system can obtain precise clock signal and related GPS data from the GPS module. The baseband board connects with the GPS module via J108 and J109. J109 provides GPS module with 5V power supply. The GPS module provides precise 19.2MHz clock source to exciter board through XS2. See the following figure: 19.2MHz J109...
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Service Manual 6.2.14 Audio Path The audio path is used to relay audio, output RX audio and input TX audio. 6.2.14.1 Relay Audio Path After demodulated by AD9864, RX audio in digital/analog mode goes to RX OMAP. Then the audio is sent to TX OMAP via McBSP3, and finally is subject to DA conversion to modulate VCO.See the following figure: McBSP2...
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Service Manual 6.2.14.3 TX Audio Path sy em ha ds of sign ls: MM P10_Mic_IN and DB26 _Ext_Mic _IN. The former is from the accesso ry c onnected to 10-Pin interface on the front panel, while the latter is from Pin 2 of the further development port DB26 (J701).
Service Manual 6.7 Troubleshoot ing Fl ow Chart Control circuit check Normal power-on and The control circuit Is RF circuit driven indication?[1] normally ?[2] works normally. Check whether RF Power supply circuit (U603, U604 and U 605) and control circuit work normally? LCD and LED work Replace LCD and...
Service Manual 8. Interface Definition PA-Baseband (J105) Pin No. Name Description Pf_DET Forward power detection, ADC input Temp_Protect_Volt Alarm voltage for temperature protection circuit Output power setting, DAC output VSWR_Protect_Volt Alarm voltage for the VSWR protection circuit Final_Bias Bias voltage of final-stage PA, DAC output For grounding Pr_DET Reverse power detection, ADC input...
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Service Manual _PLL_Data PLL data pin TX_Control_ PLL lock detection enabl e (0: On; 1: Off) TX_PLL_LD PLL lock detect (1: locke d; 0: unlocke GPS_LP Loop filter switch (1: On; 0: Off) For grounding Modulation signal of VCO, AC analog signal, MOD_H from DAC TX_PLL_Po...
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Service Manual 98_SYNCB Reset SS I/10-bi t counter RX_CV RX CV vo ltage d etect 98_FS AD9864 RX_PLL_Power_E N Power supply (5 V/3.3V) enable for PLL 98_DOUTA 864 SSI 98_PE AD9864 SPI enable 98_DOUTB AD9864 SSI For groundin 98_CLKOUT AD9864 SSI For grounding For grounding 98_PC...
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Service Manual will be dis abled General I/O interface with function defined DB26_GPIO through the CPS ACC_IO2 Accessory identification pin (not defined) PROM Not defined ACC_ Acce ssory identification pin (not defined) Programmable input pin (PTT by default) valid for DB26_PTT_I low level;...
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Service Manual USB0_D- USB data cable-, USB port USB0_D+ USB dat a cable+, USB port Ground Table 8-5 De finition of DB9 RJ45 (J901) is a TCP /IP port. It c an be used to re alize many fu nctions such as remote monitoring. Its definition is shown bel Pin No.
Service Manual 9.UHF1 (400-470MHz) Information 9.1 TX Circuit The TX circuit consists of power amplifier (PA) circuit, power control circuit, diagnosis and detection circuit and protection circuit. It is to amplify the RF signal from exciter module to 50W, which then will be output via the antenna.
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Service Manual 30dBm, which then will be sent to driver-stage PA via L-C network. 9.1.3 Driver Stage PA This PA unit is a LDM OS power tube (Q402). It can further amplify the RF signals from Q401 to 38dBm, which is then sent to final-stage PA. 9.1.4 Final-stage PA This PA unit consists of two LDMOS power tubes (Q403 and Q404).
Service Manual 9.1.8 Temperature Protection The thermistor is close to the heat sink pad of the final-stage amplifier, and is used to detect the current temperature of the heat sink. When the temperature of heat sink rises to the default value, the fan will run;...
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Service Manual 9.2.1 Front-end Circuit The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled via TV level, to remove out-of-band interference signal and to send wanted band-pass signal to the low-noise amplifier (U402). The amplified signal goes to a band-pass filter controlled via TV level, to remove out-of-band interference signal generated during amplification, and to send wanted HF signal to the mixer.
Service Manual The 18MHz clock frequen cy is generated by the LC resonance loop. 9.3 Frequency Generation Unit (FGU) The repeater has two FGUs. One is RX FGU providing the first LO frequency for the RX system; the other is TX FGU providing carrier and exciter signal for the TX system. They work simultaneously, but are locked at different frequencies.
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Service Manual converter, so as to ensure frequency accuracy. 9.3.2 PLL IC PLL IC consists of the pre-divider, programmable divider, phase detector, charge pump and etc. The voltage of analog circuit and digital circuit of PLL IC is 3.3V voltage, while the voltage of charge pump is 5V.
Service Manual 9.8 Tr oubleshooting Fl ow Chart ece er Ci...
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Service Manual Description of Normal Situations: [1] About 9.3V for receiver board. [2] About 9.1V for pin 2 of Q601 and Q604. [3] About 5V for pin 5 of U603. [4] About 3.3V for pin 5 of U604 and U605. [5] Normal CV voltage is 0.7-1.5V.
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Service Manual Transmitter Circuit No power output Any APC output? Check the baseband board Check the exciter Transient Exciter output? board current >2A Replace PD85035 9.3V power supply Check voltage >9V transistor RD01 and RD07’s Replace RD01 and RD07 Vgg>0.5V Check the control circuit...
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Service Manual Description of N ormal Situations: [1] VCO: 5V; PLL: 3.3V; [2] Frequency output for low VCO is 380 450MHz, and 420 490MHz for high VCO. The power output amplitude for both is -8 18dBm; [3] CV voltage of Q101 and Q107: about 4V; the voltage difference between base voltage and emitter voltage is about 0.6V;...
Service Manual 10. UHF2 (450-520MHz) Information 10.1 TX Circuit The TX circuit consists of power amplifier (P A) circuit, power control circuit, diagnosis and detection circuit and protection circuit. It is to amplify the RF signal from exciter module to 50W, which then will be output via the antenna.
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Service Manual Pre-driver Stage PA This PA unit is a LDMOS power tube (Q401). It can amplify the 13dBm RF signals from exciter unit to 30dBm, which then wil l be sent to driver-stage PA via L-C network. Driver Stage PA This PA unit is a LDMOS power tube (Q402).
Service Manual power. Temperature Protection The thermistor RT402 is close to the heat sink pad of the final-stage amplifier, and is used to detect the current temperatu re of the heat sink. When the temperature of heat sink rises to the default value, the fan will run;...
Service Manual remove o ut-of-band interference signal generated during amplification, and to send wanted HF signal to the mixer. The wanted signal passes through the RF band-pass filter and low-noise amplifier and goes to the mixer (U403). Meanwhile, the first local oscillator (LO) signal generated by VCO passes through the low-pass filter and also goes to the mixer.
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Service Manual other is TX FGU providing carrier and exciter signal for the TX system. They work simultaneously, but are locked a t different frequencies. Both RX FGU and TX FGU mainly consist of a reference crystal oscillator, a PLL, a VCO and a buffer amplifier.
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Service Manual divider, phase detector, charge pump and etc. The voltage of analog circuit and digital circuit of PLL IC is 3.3V voltage, while the voltage of cha rge pump is 5V. See the following figure: Figure 10-6 Block Diagram of PLL IC SKY72310’s role is to generate appropriate frequency based on the data transmitted by OMAP of baseband board.
Service Manual 10.8 T roubleshooting Fl ow Chart ece er Cir...
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Service Manual Description of Normal Situations: [1] About 9.3V for receiver board. [2] About 9.1V for pin 2 of Q601 and Q604. [3] About 5V for pin 5 of U603. [4] About 3.3V for pin 5 of U604 and U605. [5] Normal CV voltage is 0.7-1.5V.
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Service Manual Transmitter Circuit No power output Any APC output? Check the baseband board Check the exciter Transient Exciter output? board current >2A Replace PD85035 9.3V power supply Check voltage >9V transistor RD01 and RD07’s Replace RD01 and RD07 Vgg>0.5V Check the control circuit...
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Service Manual Description of N ormal Situations: [1] VCO: 5V; PLL: 3.3V; [2] Frequency output for low VCO is 435 500MHz, and 470 535MHz for high VCO. The power output amplitude for both is -8 18dBm; [3] CV voltage of Q101 and Q107: about 4V; the voltage difference between base voltage and emitter voltage is about 0.6V;...
Service Manual 11.UHF3 (350-400MHz) Information 11.1 TX Circuit The TX circuit consists of power amplifier (P A) circuit, power control circuit, diagnosis and detection circuit and protection circuit. It is to amplify the RF signal from exciter module to 50W, which then will be output via the antenna.
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Service Manual Pre-driver Stage PA This PA unit is a LDMOS power tube (Q401). It can amplify the 13dBm RF signals from exciter unit to 30dBm, which then wil l be sent to driver-stage PA via L-C network. Driver Stage PA This PA unit is a LDMOS power tube (Q402).
Service Manual power. Temperature Protection The thermistor RT402 is close to the heat sink pad of the final-stage amplifier, and is used to detect the current temperatu re of the heat sink. When the temperature of heat sink rises to the default value, the fan will run;...
Service Manual remove o ut-of-band interference signal generated during amplification, and to send wanted HF signal to the mixer. The wanted signal passes through the RF band-pass filter and low-noise amplifier and goes to the mixer (U403). Meanwhile, the first local oscillator (LO) signal generated by VCO passes through the low-pass filter and also goes to the mixer.
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Service Manual other is TX FGU providing carrier and exciter signal for the TX system. They work simultaneously, but are locked a t different frequencies. Both RX FGU and TX FGU mainly consist of a reference crystal oscillator, a PLL, a VCO and a buffer amplifier.
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Service Manual divider, phase detector, charge pump and etc. The voltage of analog circuit and digital circuit of PLL IC is 3.3V voltage, while the voltage of cha rge pump is 5V. See the following figure: Figure 11-6 Block Diagram of PLL IC SKY72310’s role is to generate appropriate frequency based on the data transmitted by OMAP of baseband board.
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Service Manual Ref. No. Part No. Description U602 3608020000000 Power management IC U603 3608020000000 Power management IC U606 3608020000000 Power management IC U601 3608006000000 Power management IC U604 3608006000000 Power management IC U605 3608006000000 Power management IC U105 3616010000000 Switch IC U101 3604019000000 PLL IC...
Service Manual .8 T oubleshooting Fl ow Chart ecei r Circ t...
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Service Manual Description of Normal Situations: [1] About 9.3V for receiver board. [2] About 9.1V for pin 2 of Q601 and Q604. [3] About 5V for pin 5 of U603. [4] About 3.3V for pin 5 of U604 and U605. [5] Normal CV voltage is 0.7-1.5V.
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Service Manual Transmitter Circuit No power output Any APC output? Check the baseband board Check the exciter Transient Exciter output? board current >2A Replace PD85035 9.3V power supply Check voltage >9V transistor RD01 and RD07’s Replace RD01 and RD07 Vgg>0.5V Check the control circuit...
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Service Manual Description of N ormal Situations: [1] VCO: 5V; PLL: 3.3V; [2] Frequency output for low VCO is 320 380MHz, and 350 415MHz for high VCO. The power output amplitude for both is -8 18dBm; [3] CV voltage of Q101 and Q107: about 4V; the voltage difference between base voltage and emitter voltage is about 0.6V;...
Service Manual 12.VHF (136-174MHz) In formation 12.1 TX Circuit The TX circuit consists of power amplifier (P A) circuit, power control circuit, diagnosis and detection circuit and protection circuit. It is to amplify the RF signal from exciter module to 50W, which then will be output via the antenna.
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Service Manual Pre-driver Stage PA This PA unit is a LDMOS power tube (Q401). It can amplify the 13dBm RF signals from exciter unit to 30dBm, which then wil l be sent to driver-stage PA via L-C network. Driver Stage PA This PA unit is a LDMOS power tube (Q402).
Service Manual power. Temperature Protection The thermistor RT402 is close to the heat sink pad of the final-stage amplifier, and is used to detect the current temperatu re of the heat sink. When the temperature of heat sink rises to the default value, the fan will run;...
Service Manual remove o ut-of-band interference signal generated during amplification, and to send wanted HF signal to the mixer. The wanted signal passes through the RF band-pass filter and low-noise amplifier and goes to the mixer (U403). Meanwhile, the first local oscillator (LO) signal generated by VCO passes through the low-pass filter and also goes to the mixer.
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Service Manual other is TX FGU providing carrier and exciter signal for the TX system. They work simultaneously, but are locked a t different frequencies. Both RX FGU and TX FGU mainly consist of a reference crystal oscillator, a PLL, a VCO and a buffer amplifier.
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Service Manual divider, phase detector, charge pump and etc. The voltage of analog circuit and digital circuit of PLL IC is 3.3V voltage, while the voltage of cha rge pump is 5V. See the following figure: Figure 12-6 Block Diagram of PLL IC SKY72310’s role is to generate appropriate frequency based on the data transmitted by OMAP of baseband board.
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Service Manual Ref. No. Part No. Description Q409 3403008000010 Transistor Q401 3504990000010 PA IC Q402 3504990000020 PA IC U406 3605008001690 Operational amplifier U401 3605008005070 Operational amplifier U407 3605010000020 Operational amplifier U404 3608002005490 Power management IC U405 3608015000060 Power management IC D401 3609030000000 Schottky diode...
Service Manual 12.8 T roubleshooting Fl ow Chart ece er Cir...
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Service Manual Description of Normal Situations: [1] About 9.3V for receiver board. [2] About 9.1V for pin 2 of Q601 and Q604. [3] About 5V for pin 5 of U603. [4] About 3.3V for pin 5 of U604 and U605. [5] Normal CV voltage is 2.5-4.4V.
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Service Manual Transmitter Circuit No power output Any APC output? Check the baseband board Check the exciter Transient Exciter output? board current >2A Replace PD85035 9.3V power supply Check voltage >9V transistor RD01 and RD07’s Replace RD01 and RD07 Vgg>0.5V Check the control circuit...
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Service Manual Description of N ormal Situations: [1] VCO: 5V; PLL: 3.3V; [2] Frequency output for low VCO is 120 170MHz, and 140 190MHz for high VCO. The power output amplitude for both is -8 18dBm; [3] CV voltage of Q101 and Q107: about 4V; the voltage difference between base voltage and emitter voltage is about 0.6V;...
Service Manual 13. Disassembly and As sembly Disassembly 1. Turn off this product and remove the power cord, antenna as well as signal cable. 2. Loosen the screws behind the top cover, a nd then pull the cover to remove it. .
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Service Manual 6. Remove the seven screws locking the baseband board, and then take it out. 7. Remove the four screws locking the front panel and the screw locking the speaker, and then remove the front panel. 8. Pull out the Navigation knob, the nut locking the encoder switch, the Volume Control knob and the light guide.
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Service Manual Part No. Description Qty. 7000233000000 Heat sink 6201895000000 Cover for heat sink Fan for heat sink 00 7104016020100 Self-tapping screw 6201896000000 Cover for baseband PCB 4408100002000 Adapter 4220250000500 RF cable 4210120000600 Signal cable 4210120000700 Signal cable 4200280000000 1/2 power cord 4290075000000 Adaption cable for Ethernet port 710306004000...
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Service Manual 40100000 Metric screw 6100553200000 Cable sleeve Logo and model label 42101 2000 0500 Signal cable Semi-finished baseband 6201873000000 Top cover of shielding box for exciter module 4210050001900 Signal ca Semi-finished exciter module 4220130000000 RF cable RX module 6201874000000 Top cover of shielding box for exciter module Bottom cover of shielding box for exciter 6201872000000...
Service Manual 16. Specifications General UHF1: 400-470MHz UHF2: 450-520MHz Frequency Range UHF3: 350-400MHz VHF: 136-174MHz Channel Capacity Channel Spacing 12.5kHz/20kHz/25kHz Operating Voltage 13.6V±15% Current Standby <0.8A Drain Transmit <11A 0.5ppm Frequency Stability ±1.5ppm Antenna Impedance Duty Cycle 100% Dimensions (H×W×D) 88 X 483 X 366 mm(3.4 X 19.0 X 14.4 inch) Weight 8.5 kg(18.7 Ibs)
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