Motorola Commercial CM Series Service Information
  1. Manuals
  2. Brands
  3. Motorola Manuals
  4. Radio
  5. Commercial CM Series
  6. Service information

Motorola Commercial CM Series Service Information

Hide thumbs Also See for Commercial CM Series:
Table of Contents

Advertisement

Quick Links

Commercial Series
CM Radios
UHF1 (403-440MHz)
Service Information
Issue: October 2004

Advertisement

Table of Contents
loading

Related Manuals for Motorola Commercial CM Series

Summary of Contents for Motorola Commercial CM Series

  • Page 1 Commercial Series CM Radios UHF1 (403-440MHz) Service Information Issue: October 2004...

  • Page 2: Computer Software Copyrights

    Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola...

  • Page 3: Table Of Contents

    Table of Contents Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS 1.0 CM140/CM340/CM160/CM360 Model Chart ............1-1 2.0 Technical Specifications ..................1-2 Chapter 2 THEORY OF OPERATION 1.0 Introduction ......................2-1 2.0 UHF (403-440MHz) Receiver ................2-1 2.1 Receiver Front-End ..................2-1 2.2 Receiver Back End ..................2-2 3.0 UHF Transmitter Power Amplifier (403-440 MHz) ..........2-2 3.1 First Power Controller Stage ................2-2 3.2 Power Controlled Driver Stage ...............2-3...
  • Page 4 8.3 Dual Tone Multiple Frequency (DTMF) Data ..........2-18 9.0 Receive Audio Circuits..................2-19 9.1 Squelch Detect ..................... 2-19 9.2 Audio Processing and Digital Volume Control..........2-20 9.3 Audio Amplification Speaker (+) Speaker (-) ..........2-20 9.4 Handset Audio....................2-21 9.5 Filtered Audio and Flat Audio ...............

  • Page 5: Model Chart And Technical Specifications

    Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS CM140/CM340/CM160/CM360 Model Chart CM Series UHF1 403-440MHz Model Description MDM50QNC9AA2_N CM140 403-440 MHz 1-25W 8-Ch MDM50QNF9AA2_N CM160 403-440 MHz 1-25W 64-Ch MDM50QNF9AN2_N CM360 403-440 MHz 1-25W 100-Ch Item Description PMUE2002_ S. Tanapa UHF1 25W 8 Ch BNC PMUE2005_ S.

  • Page 6: Technical Specifications

    MODEL CHART AND TECHNICAL SPECIFICATIONS Technical Specifications Data is specified for +25°C unless otherwise stated. General Specification UHF1 Frequency Range: 403-440 MHz Frequency Stability ±2.5 PPM (-30°C to +60°C, 25°C Ref.) Channel Capacity: CM140 - 8 CM160 - 64 CM360 - 100 Channel Spacing: 12.5/20/25 kHz Power Supply:...
  • Page 7 Technical Specifications Transmitter Specification UHF1 Power Output 1-25W Conducted/Radiated -36 dBm < 1 GHz Emissions: -30 dBm > 1 GHz Audio Response: (from 6 dB/ oct. Pre-Emphasis, 300 to +1, -3dB 3000Hz) Tx Audio Distortion < 3% Modulation Limiting: ±2.5 kHz @ 12.5 kHz ±4.0 kHz @ 20 kHz ±5.0 kHz @ 25 kHz FM Hum and Noise:...
  • Page 8 MODEL CHART AND TECHNICAL SPECIFICATIONS THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 9: Theory Of Operation

    Chapter 2 THEORY OF OPERATION Introduction This Chapter provides a detailed theory of operation for the UHF circuits in the radio. Details of the theory of operation and trouble shooting for the the associated Controller circuits are included in this Section of the manual.

  • Page 10: Receiver Back End

    THEORY OF OPERATION Receiver Back End The IF signal from the crystal filter enters the IF amplifier which provides 20 dB of gain and feeds the IF IC at pin 1. The first IF signal at 44.85 MHz mixes with the second local oscillator (LO) at 44.395 MHz to produce the second IF at 455 kHz.

  • Page 11: Power Controlled Driver Stage

    UHF Transmitter Power Amplifier (403-440 MHz) PA.Op-amp U103-3 monitors the drain current of U101 via resistor R122 and adjusts the bias voltage of U101. In receive mode, the DC voltage from RX_EN line turns on Q101, which in turn switches off the biasing voltage to U101.

  • Page 12: Harmonic Filter

    THEORY OF OPERATION Harmonic Filter Inductors L111 and L113 along with capacitors C1011, C1023, C1020, C1016 and C1026 form a low-pass filter to attenuate harmonic energy coming from the transmitter. Resistor R150 along with L126 drains any electrostatic charges that might otherwise build up on the antenna. The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits to improve spurious response rejection.

  • Page 13: Fractional-N Synthesizer

    UHF (403-440MHz) Frequency Synthesis parameters (four characterize the inverse Bechmann voltage curve and one for frequency accuracy of the reference oscillator at 25 degrees C). This algorithm is implemented by the LVFRAC-N (U200) at the power up of the radio. TCXO Y200, along with its corresponding circuitry R204, R205, R210, and C2053, are not placed as the temperature compensated crystal proved to be reliable.

  • Page 14: Voltage Controlled Oscillator (Vco)

    THEORY OF OPERATION Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO/Buffer IC (VCOBIC, U201), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuitry. AUX3 (U200 Pin 2) U200 Pin 32 Prescaler Out TRB IN Pin 20...

  • Page 15: Synthesizer Operation

    UHF (403-440MHz) Frequency Synthesis Synthesizer Operation The synthesizer consists of a low voltage FRAC-N IC (LVFRAC-N), reference oscillator, charge pump circuits, loop filter circuit, and DC supply. The output signal (PRESC_OUT) of the VCOBIC (U201, pin 12) is fed to the PREIN, pin 32 of U200 via a low pass filter which attenuates harmonics and provides a correct input level to the LVFRAC-N in order to close the synthesizer loop.

  • Page 16: Controller Theory Of Operation

    THEORY OF OPERATION Controller Theory of Operation This section provides a detailed theory of operation for the radio and its components. The main radio is a single-board design, consisting of the transmitter, receiver, and controller circuits. A control head is connected by an extension cable. The control head contains LED indicators, a microphone connector, buttons, and speaker.
  • Page 17 Controller Theory of Operation The DC voltage applied to connector P2 supplies power directly to the following circuitry: • Electronic on/off control • RF power amplifier • 12 volts P-cH FET -U514 • 9.3 volt regulator • Audio PA Ignition Control Head RF_PA Audio_PA...

  • Page 18: Protection Devices

    2-10 THEORY OF OPERATION Voltage regulator U503 provides 5V for the RF circuits. Input and output capacitors are used to reduce the high frequency noise and provide proper operation during battery transients. VSTBY is used only for CM360 5-tone radios. The voltage VSTBY, which is derived directly from the supply voltage by components R5103 and VR502, is used to buffer the internal RAM.

  • Page 19: Microprocessor Clock Synthesiser

    Controller Theory of Operation 2-11 5.3.3 Emergency Mode The emergency switch (P1 pin 9), when engaged, grounds the base of Q506 via EMERGENCY _ACCES_CONN. This switches Q506 to off and consequently resistor R5020 pulls the collector of Q506 and the base of Q506 to levels above 2 volts. Transistor Q502 switches on and pulls U501 pin2 to ground level, thus turning ON the radio.

  • Page 20: Serial Peripheral Interface (Spi)

    2-12 THEORY OF OPERATION Serial Peripheral Interface (SPI) The µP communicates to many of the IC’s through its SPI port. This port consists of SPI TRANSMIT DATA (MOSI) (U403-pin100), SPI RECEIVE DATA (MISO) (U403-pin 99), SPI CLK (U0403-pin1) and chip select lines going to the various IC’s, connected on the SPI PORT (BUS). This BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data (SPI TRANSMIT DATA or SPI RECEIVE DATA) is sent.

  • Page 21: Normal Microprocessor Operation

    Controller Theory of Operation 2-13 Normal Microprocessor Operation For this radio, the µP is configured to operate in one of two modes, expanded and bootstrap. In expanded mode the µP uses external memory devices to operate, whereas in bootstrap operation the µP uses only its internal memory.

  • Page 22: Static Random Access Memory (Sram)

    2-14 THEORY OF OPERATION Static Random Access Memory (SRAM) The SRAM (U402) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off. The device allows an unlimited number of write cycles.

  • Page 23: Transmit Audio Circuits

    Transmit Audio Circuits 2-15 Transmit Audio Circuits 24kOhms TX SND TX RTN U509 CONTROL HEAD FILTERS AND CONNECTOR PREEMPHASIS ASFIC_CMP GCB3 U504 LIMITER HS SUMMER EXT MIC U509 SPLATTER FLAT TX FILTER AUDIO MOD IN ACCESSORY LS SUMMER CONNECTOR SECTION GCB5 (SYNTHESIZER) ATTENUATOR...

  • Page 24: Ptt Sensing And Tx Audio Processing

    2-16 THEORY OF OPERATION 7.1.2 Standard Microphone Hook Pin is shorted to the hook mic inside the standard Mic, If the mic is out off hook, 3.3V is routed to R429 via R458, D401, and it create 0.7V on MIC_SENSE (u.P U403-67) by Voltage Divider R429/R430.

  • Page 25: Transmit Signalling Circuits

    Transmit Signalling Circuits 2-17 Transmit Signalling Circuits SUMMER 5-3-2 STATE HIGH SPEED ENCODER CLOCK IN SPLATTER (HSIO) FILTER DTMF MICRO ENCODER CONTROLLER U403 ASFIC_CMP U504 LOW SPEED ENCODER SUMMER CLOCK IN (LSIO) TO RF ATTENUATOR SECTION MOD IN (SYNTHESIZER) Figure 2-8 Transmit Signalling Path From a hardware point of view, there are 3 types of signaling: •...

  • Page 26: High Speed Data

    2-18 THEORY OF OPERATION High Speed Data High speed data refers to the 3600 baud data waveforms, known as Inbound Signaling Words (ISWs) used in a trunking system for high speed communication between the central controller and the radio. To generate an ISW, the µP first programs the ASFIC CMP (U504) to the proper filter and gain settings.

  • Page 27: Receive Audio Circuits

    Receive Audio Circuits 2-19 Receive Audio Circuits ACCESSORY CONNECTOR FLT RX AUDIO AUDIO SPKR + EXTERNAL SPKR - U502 SPEAKER SPKR+ SPKR- CONTROL HEAD CONNECTOR MUTE U509 INTERNAL SPEAKER HANDSET AUDIO U505 GCB4 U IO AUDIO URX OUT GCB1 VOLUME AUX RX ASFIC_CMP ATTEN.

  • Page 28: Audio Processing And Digital Volume Control

    2-20 THEORY OF OPERATION Audio Processing and Digital Volume Control The receiver audio signal (DISC AUDIO) enters the controller section from the IF IC where it is DC coupled to ASFIC CMP via the DISC input U504-pin 2. The signal is then applied to both the audio and the PL/DPL paths The audio path has a programmable amplifier, whose setting is based on the channel bandwidth being received, an LPF filter to remove any frequency components above 3000Hz, and a HPF to...

  • Page 29: Handset Audio

    Receive Signalling Circuits 2-21 Handset Audio Certain handheld accessories have a speaker within them which require a different voltage level than that provided by U502. For these devices HANDSET AUDIO is available at control head connector J2 pin18. The received audio from the output of the ASFIC CMP’s digital volume attenuator is routed to U505 pin 2 where it is amplified.

  • Page 30: Alert Tone Circuits

    2-22 THEORY OF OPERATION The low speed limited data output (PL, DPL, and trunking LS) appears at U504-pin18, where it connects to the µP U403-pin 80. The low speed data is read by the µP at twice the frequency of the sampling waveform; a latch configuration in the ASFIC CMP stores one bit every clock cycle.

  • Page 31: Troubleshooting Charts

    Chapter 3 TROUBLESHOOTING CHARTS This section contains detailed troubleshooting flowcharts. These charts should be used as a guide in determining the problem areas. They are not a substitute for knowledge of circuit operation and astute troubleshooting techniques. It is advisable to refer to the related detailed circuit descriptions in the theory of operation sections prior to troubleshooting a radio.

  • Page 32: Troubleshooting Flow Chart For Receiver Rf (Sheet 1 Of 2)

    TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver RF (Sheet 1 of 2) START Problem in 12 KHz and No (Either 12.5kHz or 25kHz channel spacing problem) 25 KHz channel spacing 9V on Check Go to R310 (LNA) to U301 Go to RX_EN DC Section Okay ?

  • Page 33: Troubleshooting Flow Chart For Receiver (Sheet 2 Of 2)

    Troubleshooting Flow Chart for Receiver RF (Sheet 1 of 2) Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) From Check visually all receiver Go to (IFIC -Vcc) components DC Section OK ? installation ? Inject - 40dBm (CW) Check to RF connector Installation the component...

  • Page 34: Troubleshooting Flow Chart For 25W Transmitter (Sheet 1 Of 3)

    TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for 25W Transmitter (Sheet 1 of 3) START No or too low power when keyed Check components between Q100 and RF output, >1A Current >800mA & <1A Antenna Switch D104, D103, increase when VR102 and Q106 keyed? Before replacing Q100.

  • Page 35: Troubleshooting Flow Chart For 25W Transmitter (Sheet 2 Of 3)

    Troubleshooting Flow Chart for 25W Transmitter (Sheet 1 of 3) Troubleshooting Flow Chart for 25W Transmitter (Sheet 2 of 3) Check PA Stages No or too low power when keyed Voltage Check U403 at Q101 & Q102 Check Q101, Q102, base=0? R153, R136, R165, R122, R168 &...

  • Page 36: Troubleshooting Flow Chart For 25W Transmitter (Sheet 3 Of 3)

    TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for 25W Transmitter (Sheet 3 of 3 Check Final PA Stage Supply Voltage PA_Bias <2V Replace Q100 Voltage at R134 Check Bias Tuning, 2-3V R134, R131 & R106 before replacing ASFIC U504 RF Voltage Check FGU after C1044 >100mV? Check components...

  • Page 37: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Start Check 5V at U200 Regulator pins 5, 20, 34 U503 & 36 Visual Correct check of the Problem Board Check D200, D201, C2026, C2025, & C2027 16.8MHz 16.8MHz Replace signal at U200 Pin 47 Signal at U200...

  • Page 38: Troubleshooting Flow Chart For Vco

    TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP1 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is 4.5V DC 4.5V DC working correctly and runner...

  • Page 39: Troubleshooting Flow Chart For Dc Supply (1 Of 2)

    Troubleshooting Flow Chart for DC Supply (1 of 2) Troubleshooting Flow Chart for DC Supply (1 of 2) Since the failure of a critical voltage supply might cause the radio to automatically power down, supply voltages should first be probed with a multimeter. If all the board voltages are absent, then the voltage test point should be retested using a rising-edge-triggered oscilloscope.

  • Page 40: Troubleshooting Flow Chart For Dc Supply (2 Of 2)

    3-10 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for DC Supply (2 of 2) D3_3V Check VDC on C5007 Go to Digital Section Check Voltage on V=3.3V C5041 Replace U510 Go to Start 9v<V<9.8v...

  • Page 41: Allocation Of Schematics And Circuit Boards

    Chapter 4 UHF1 PCB/ SCHEMATICS/ PARTS LISTS Allocation of Schematics and Circuit Boards UHF1 and Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the Controller circuits. This Chapter shows the schematics for both the UHF circuits and the Controller circuits. The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components.
  • Page 42 UHF1 PCB/ SCHEMATICS/ PARTS LISTS THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 43: Uhf 1-25W Pcb 8486684Z01 (Rev.o) / Schematics

    UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics TX_INJ TX_INJ FILT_SW_B+ FILT_SW_B+ MAIN COMPARTMENT PA_BIAS PA_BIAS COMP_B+ COMP_B+ DET_VFWD DET_VFWD PWR_SET PWR_SET INTEGRATOR INTEGRATOR RX_EN RX_EN TX_EN TX_EN 73D02968C74-O SHEET 1 OF 8 UHF1 Interconnection between Main Board and Power Amplifier Compartment...
  • Page 44 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics J1 1 C5100 C1001 C1097 C1113 VR693 C1088 L126 TP3 VR501 C1008 VR500 C1114 C1016 C1098 C1154 R5082 M102 R5081 C5096 R5083 C1009 C1087 C1033 R178 C1084 C1151 C1063 R179 C1155 M100 C1129 C5001 D502 R5074...
  • Page 45 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics C5000 R127 C5086 C1061 R128 D402 L115 R126 C1106 R147 R175 R131 VR692 R404 R403 VR503 C5083 R405 R421 M111 L500 R5049 C5060 C5055 R5020 C1086 R5030 C1128 R5036 M114 C5037 C1127 R5023 Q502 R153 Q505...
  • Page 46 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics D3_3V FILT_SW_B+ FILT_SW_B+ D3_3V TX_EN SPI_CLK SPI_MOSI SPI_MISO RX_EN LOC_DIST RSSI SYNTH_CS SYNTH_LOCK ASFIC_CS DIGITAL CH_ACT SQ_DET LSIO HSIO F1200 uP_CLK VS_AUDIO_SEL J3 - RESET D3_3V J3-17 J3-4 VOICE STORAGE AUDIO SELECT SERIAL CLOCK J3-16 J3-12 SERIAL DATA SEND...
  • Page 47 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics RX_EN TX_EN COMP_B+ (SOURCE) (SOURCE) (SOURCE) PA_BIAS D3_3V D3_3V COMP_B+ SPI_MOSI PA_BIAS PWR_SET SPI_CLK ASFIC_CS PWR_SET FILT_SW_B+ FILT_SW_B+ (SOURCE) CH_ACT FILT_SW_B+ SQ_DET (SOURCE) LSIO FILT_SW_B+ HSIO POWER CONTROL F1200 DET_VFWD INTEGRATOR INTEGRATOR uP_CLK VS_AUDIO_SEL DET_VFWD RESET...
  • Page 48 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics PA_FILT_B+ (SOURCE) IF108 L100 Place inside of the PA compartment 1019447 L119 1019447 COMP_B+ R186 IF109 R137 C1000 C1112 C1111 C1110 C1109 C1106 C1107 C1103 C1089 C1115 C1099 C1100 C1116 39.K 120.p 120.p 39.p 39.p 39.p...
  • Page 49 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics U102 LM2904 Current sense protection (option) FILT_SW_B+_PA C1073 120.p CONTACTS FOR PA CLIP PLTD_HOLE3_5x7_0_TRIMMED L117 1019447 L115 C1002 100.p 18.n Coupler C1011 L113 Antenna Connector width 2.032 39.p D104 17.n J11-1 L111 Q100 J11-2 17.n C1016...
  • Page 50 4-10 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics L217 C2026 390nH R225 C2000 C2015 C2034 150. 2.2uF 0.1uF 120.p C2055 C2025 R228 100. C2024 D200 L200 C2198 390nH R226 C2016 C2004 150. C2027 D201 C2005 C2023 C2035 0.1uF 2.2uF 120.p 2.2uF R202 XTAL1...
  • Page 51 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-11 V_SF L201 R231 680nH L209 R220 100.0n 510. R235 C2040 C2042 C2041 C2009 C2038 C2008 C2007 120.p C2011 100n 120.p 0.1uF 0.1uF 120.p 120.p 0.1uF V_SF C2021 L208 100.0n C2010 C2039 L202 100n 120.p 680nH...
  • Page 52 4-12 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics FRONT-END SHIELD Q304 Q306 R334 R300 430. R310 R346 LOC_DIST 10.K 10.K 15.K C321 120.p R345 10.K Q300 R336 L304 220. C323 C350 150.n RX_EN 120.p Q301 D305 MIXER SHIELD L301 R331 150.n SH300 100.
  • Page 53 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-13 R315 R306 U301 12.K FL301 20.K TC7W04F FLTR C313 1 IN 100n U301 TC7W04F BW_SEL R316 D302 D301 FL302 R305 12.K 20.K FLTR C312 Check if it is 3v or another value 100n 1 IN R314...
  • Page 54 4-14 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics L120 1019447 IF502 COMP_B+ IF503 C1113 SOURCE C1097 C1088 C1098 C1114 FILT_B+ L500 39.p 39.p 120.p 120.p 39.p 1019447 U501 9.3V POWER SUPPLY 9.3V SOURCE IF505 LM2941T VOUT ON_OFF R5081 6.34K C5005 C5015 C5074 C5095...
  • Page 55 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-15 C5089 82.p C5090 82.p R5024 R5068 24.K R5046 R5022 100.K POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BRD 100.K 6.2K U506 R5045 R5056 C5056 LM2904 33.K 10.K U506 C5033 C5081 LM2904 C5101 120.p 100n R5023 C5032 FLAT_TX_AUDIO_INPUT_ACCESS_CONN 100.K 100n C5078 R5057 C5055...
  • Page 56 4-16 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics D400 D3_3V R462 SCI_CH C410 TP406 R450 R451 TEST_POINT R439 100n LSIO 10.K 10.K 10.K SPI_MISO CH_ACT TP410 TP404 TEST_POINT TEST_POINT SPI_MOSI SQ_DET SPI_CLK HSIO ASFIC_CS OPT_DATA_R_OPBD Q407 Q400 D3_3V SYNTH_CS uP_CLK TP403 DISPLAY_CS_CH TEST_POINT...
  • Page 57 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-17 FILT_SW_B+ R401 R460 Q403 2.7K 1.5K D3_3V PROG_OUT-ALARM_4 R444 TP405 10.K Q401 TEST_POINT D3_3V Q415 BOOT_EN_IN_CH D3_3V R431 R436 R457 VR400 10.K 33.K Q412 3.3K 6.80 ACCESS_PTT C490 R459 47.K R458 3.3K D401 D3_3V R445...
  • Page 58 4-18 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics FILT_SW_B+ U100 LM2904 IF701 L101 INTEGRATOR IF700 C1046 DET_VFWD R141 120.p 22.K C1071 120.p C1082 C1045 C1075 39.p 120.p 39.p R117 R140 27.K U100 LM2904 73D02968C74-O SHEET 3 OF 8 UHF1 (403-440MHz) Power Control Circuit...
  • Page 59 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-19 2.1 UHF1 PCB 8486684Z01 Parts List 1-25W Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Circuit Motorola C1039 2113743E07 CER CHIP CAP .022UF...
  • Page 60 4-20 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C2002 2311049A72 CAP TANT CHIP 10.0UF 10% C2033...
  • Page 61 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-21 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C347 2113740L09 CAP CER CHIP 4.3 PF +-0.1PF...
  • Page 62 4-22 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C5073 2113740F53 CAP CHIP REEL CL1 +/-30 120...
  • Page 63 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-23 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. L103 2462587T30 IND CHIP 1000NH 5% LOW PRO...
  • Page 64 4-24 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R138 0662057A86 CHIP RES 36K OHMS 5% R179...
  • Page 65 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics 4-25 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R405 0662057B47 CHIP RES 0 OHMS +-.050 R444...
  • Page 66 4-26 UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R5073 0662057A49 CHIP RES 1000 OHMS 5% R601...

  • Page 67: Uhf 1-25W Pcb 8486684Z03 (Rev. B) / Schematics

    UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-27 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics TX_INJ TX_INJ FILT_SW_B+ FILT_SW_B+ MAIN COMPARTMENT PA_BIAS PA_BIAS COMP_B+ COMP_B+ DET_VFWD DET_VFWD PWR_SET PWR_SET INTEGRATOR INTEGRATOR RX_EN RX_EN TX_EN TX_EN 73D02968C74-O SHEET 1 OF 8 UHF1 Interconnection between Main Board and Power Amplifier Compartment...
  • Page 68 4-28 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics C5100 C1001 C1097 VR693 C1113 C1088 L126 VR501 C1008 C1114 VR500 C1016 C1098 C1154 R5082 R5081 C5096 C1009 R5083 C1087 C1033 R178 M102 C1084 C1151 M100 C1063 R5074 C1155 C1129 R179 C5001 D502 C1014...
  • Page 69 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-29 C5000 R127 C5086 C1061 R128 D402 L115 R126 R175 C1106 VR692 R147 R131 R404 R403 C5083 VR503 R405 R421 L500 R5049 C5055 C5060 C1086 R5020 R5030 C1128 R5036 C5037 C1127 R5023 Q506 R153 Q505...
  • Page 70 4-30 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics D3_3V FILT_SW_B+ FILT_SW_B+ D3_3V TX_EN SPI_CLK SPI_MOSI SPI_MISO RX_EN LOC_DIST RSSI SYNTH_CS SYNTH_LOCK ASFIC_CS DIGITAL CH_ACT SQ_DET LSIO HSIO F1200 uP_CLK VS_AUDIO_SEL J3 - RESET D3_3V J3-17 J3-4 VOICE STORAGE AUDIO SELECT SERIAL CLOCK J3-16 J3-12...
  • Page 71 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-31 RX_EN TX_EN COMP_B+ (SOURCE) (SOURCE) (SOURCE) PA_BIAS D3_3V D3_3V COMP_B+ SPI_MOSI PA_BIAS PWR_SET SPI_CLK ASFIC_CS PWR_SET FILT_SW_B+ FILT_SW_B+ (SOURCE) CH_ACT FILT_SW_B+ SQ_DET (SOURCE) LSIO FILT_SW_B+ HSIO POWER CONTROL F1200 DET_VFWD INTEGRATOR INTEGRATOR uP_CLK VS_AUDIO_SEL...
  • Page 72 4-32 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics PA_FILT_B+ (SOURCE) IF108 L100 Place inside of the PA compartment 1019447 L119 1019447 COMP_B+ R186 IF109 R137 C1000 C1112 C1111 C1110 C1109 C1106 C1107 C1103 C1089 C1115 C1099 C1100 C1116 39.K 120.p 120.p 39.p...
  • Page 73 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-33 U102 LM2904 Current sense protection (option) FILT_SW_B+_PA C1073 120.p CONTACTS FOR PA CLIP PLTD_HOLE3_5x7_0_TRIMMED L117 1019447 L115 C1002 100.p 18.n Coupler C1011 L113 Antenna Connector width 2.032 39.p D104 17.n J11-1 L111 Q100 J11-2...
  • Page 74 4-34 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics L217 C2026 390nH R225 C2000 C2015 C2034 150. 2.2uF 0.1uF 120.p C2055 C2025 R228 100. C2024 D200 L200 C2198 390nH R226 C2016 C2004 150. C2027 D201 C2005 C2023 C2035 0.1uF 2.2uF 120.p 2.2uF R202...
  • Page 75 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-35 V_SF L201 R231 680nH L209 R220 100.0n 510. C2009 C2038 R235 C2040 C2008 C2007 C2042 C2041 C2011 100n 120.p 120.p 0.1uF 0.1uF 120.p 120.p 0.1uF V_SF C2021 L208 100.0n C2010 C2039 L202 120.p 680nH...
  • Page 76 4-36 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics FRONT-END SHIELD Q304 Q306 R334 R300 430. R310 R346 LOC_DIST 10.K 10.K 15.K C321 120.p R345 10.K Q300 R336 L304 220. C323 C350 150.n RX_EN 120.p Q301 D305 MIXER SHIELD L301 R331 150.n SH300...
  • Page 77 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-37 R315 R306 U301 12.K FL301 20.K TC7W04F FLTR C313 1 IN 100n U301 TC7W04F BW_SEL R316 D302 D301 FL302 R305 12.K 20.K FLTR C312 Check if it is 3v or another value 100n 1 IN R314...
  • Page 78 4-38 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics L120 1019447 IF502 COMP_B+ IF503 C1113 SOURCE C1097 C1088 C1098 C1114 FILT_B+ L500 39.p 39.p 120.p 120.p 39.p 1019447 U501 9.3V POWER SUPPLY 9.3V SOURCE IF505 LM2941T VOUT ON_OFF R5081 6.34K C5005 C5015 C5074...
  • Page 79 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-39 C5089 82.p C5090 82.p R5024 R5068 24.K R5046 R5022 100.K POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BRD 100.K 6.2K U506 R5045 R5056 C5056 LM2904 33.K 10.K U506 C5033 C5081 LM2904 C5101 120.p 100n R5023 C5032 FLAT_TX_AUDIO_INPUT_ACCESS_CONN 100.K 100n C5078 R5057...
  • Page 80 4-40 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics D400 D3_3V R462 SCI_CH C410 TP406 R450 R451 TEST_POINT R439 100n LSIO 10.K 10.K 10.K SPI_MISO CH_ACT TP410 TP404 TEST_POINT TEST_POINT SPI_MOSI SQ_DET SPI_CLK HSIO ASFIC_CS OPT_DATA_R_OPBD Q407 Q400 D3_3V SYNTH_CS uP_CLK TP403 DISPLAY_CS_CH...
  • Page 81 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-41 FILT_SW_B+ R401 R460 Q403 2.7K 1.5K D3_3V PROG_OUT-ALARM_4 R444 TP405 10.K Q401 TEST_POINT D3_3V Q415 BOOT_EN_IN_CH D3_3V R431 R436 R457 VR400 10.K 33.K Q412 3.3K 6.80 ACCESS_PTT C490 R459 47.K R458 3.3K D401 D3_3V...
  • Page 82 4-42 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics FILT_SW_B+ U100 LM2904 IF701 L101 INTEGRATOR IF700 C1046 DET_VFWD R141 120.p 22.K C1071 120.p C1082 C1045 C1075 39.p 120.p 39.p R117 R140 27.K U100 LM2904 73D02968C74-O SHEET 3 OF 8 UHF1 (403-440MHz) Power Control Circuit...
  • Page 83 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-43 3.1 UHF1 PCB 8486684Z03 Parts List 1-25W Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Circuit Motorola C1039 2113743E07 CER CHIP CAP .022UF...
  • Page 84 4-44 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C2002 2311049A72 CAP TANT CHIP 10.0UF 10%...
  • Page 85 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-45 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C346 2113740L04 CAP CER CHIP 2.7 PF +-0.1PF...
  • Page 86 4-46 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. C5072 2113740F53 CAP CHIP REEL CL1 +/-30 120...
  • Page 87 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-47 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. L100 7686135U02 FLTR,EMI L213 2413926N24 IND CER CHIP 100.0 NH 5%...
  • Page 88 4-48 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R135 0662057A88 CHIP RES 43K OHMS 5%...
  • Page 89 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics 4-49 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R404 0662057B47 CHIP RES 0 OHMS +-.050...
  • Page 90 4-50 UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Ref. Part No. Ref. Part No. Ref. Part No. Ref. Part No. R5071 0662057A57 CHIP RES 2200 OHMS 5%...

This manual is also suitable for:

Commercial cm140Commercial cm160Commercial cm306

Table of Contents