Motorola CP040 Service Information Download Page 1

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Commercial Series

CP040 Radios

UHF1 (403-440MHz)

Service Information

Issue: October 2004

Summary of Contents for CP040

Page 1: ...Commercial Series CP040 Radios UHF1 403 440MHz Service Information Issue October 2004 ...

Page 2: ...he copyrighted computer program 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 products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the cop...

Page 3: ...l 2 5 4 0 UHF1 403 440MHz Frequency Generation Circuitry 2 6 4 1 Fractional N Synthesizer 2 7 4 2 Voltage Controlled Oscillator VCO 2 8 Chapter 3 TROUBLESHOOTING TABLES 1 0 Troubleshooting Table for Receiver 3 1 2 0 Troubleshooting Table for Synthesizer 3 3 3 0 Troubleshooting Table for Transmitter 3 4 4 0 Troubleshooting Table for Board and IC Signals 3 6 Chapter 4 UHF PCB SCHEMATICS PARTS LISTS ...

Page 4: ...iv ...

Page 5: ... 4 Ch X PMLE4298_ CP040 Back Cover Kit 403 440 MHz 16 Ch X PMLN4552_ Plain Front Housing Kit 4 Ch X PMLN4553_ Plain Front Housing Kit 16 Ch X X NTN4497_R Li Ion Battery High Capacity X X WPLN4166 Rapid Desktop Charger Base Only X X EPNN7990_ Power Supply for Rapid Desktop Charger UK X X EPNN7991_ Power Supply for Rapid Desktop Charger Euro X X HLN8255 Belt Clip X X 8505816K24_ Antenna 400 440 MHz ...

Page 6: ...ith High Capacity Li Ion Battery and with Standard NiMH Battery with Slim Li Ion Battery 128 7mm H x 61 7mm W x 44 1mm D 128 7mm H x 61 7mm W x 41 3mm D Weight with Slim Li Ion Battery with High Capacity Li Ion Battery with Standard NiMH Battery 365g 420g 480g Average Battery Life 5 5 90 Duty Cycle with Slim Li Ion Battery with High Capacity Li Ion Battery with Standard NiMH Battery 1 W 17Hrs 19 H...

Page 7: ...onse from 6 dB oct Pre emphasis 300 to 3000Hz 1 3 dB Audio Distortion 1000 Hz 60 Rated Max Dev 3 FM Noise 40 dB 12 5 kHz 45 dB 25 kHz Receiver Specifications UHF1 12 5 kHz UHF1 20 25kHz Frequency 403 440 MHz Sensitivity 12dB EIA SINAD 0 25 µV typical Adjacent Channel Selectivity 60 dB 70 dB Intermodulation 70 dB Freq Stability 30 C to 60 C 0 00025 Spur Rejection 75 dB Image and 1 2 I F Rejection 7...

Page 8: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS ...

Page 9: ...s the range of 403 440 MHz and provides switchable IF bandwidth for use with 20 25 30 kHz or 12 5 kHz channel spacing systems The receiver is divided into two major blocks as shown in Figure 2 1 Front End Back End Figure 2 1 UHF Receiver Block Diagram Demodulator Crystal Filter 1st Mixer RF Amp IF Amp Preselector Filter Interstage Filter Recovered Audio RSSI RX from Antenna Switch Inj Filter First...

Page 10: ... off during transmit to reduce dissipation in Q21 Current mirror Q22 maintains the operating current of Q21 constant at 8 mA regardless of device and temperature variations for optimum dynamic range and noise figure The output of the RF amplifier is applied to the interstage filter a fixed tuned 4 pole Butterworth shunt coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz...

Page 11: ... and the limiter input The wider filter FL53 is used for 20 25 kHz channel spacing and the narrower filter FL54 is used for 12 5 kHz channels When the BW_SEL line is high the two upper diodes in packages D51 and D52 are forward biased selecting FL53 for 20 25 kHz channels When the BW_SEL line is low the two lower diodes in packages D51 and D52 are forward biased selecting FL54 for 12 5 kHz channel...

Page 12: ...ontrol circuit The output power of the module is controlled by varying the DC gate bias on U110 pin 2 VGG 3 2 Antenna Switch The antenna switch consists of two pin diodes D120 and D121 In the receive mode both diodes are off Signals applied at the antenna or at jack J140 are routed via the harmonic filter through network C122 C124 and L121 to the receiver input In the transmit mode Q170 is on and ...

Page 13: ...wer set DAC contained in the ASFICcmp IC DACG U451 pin 6 This PWR_SET voltage is applied to U150 pin 3 Stage U150 2 compares the voltage drop across current sense resistor R150 to the voltage drop across resistor R151 caused by current flow through Q150 and adjusts its output pin 7 to maintain equal voltages at pins 5 and 6 Thus the current flow through Q150 and hence its emitter voltage is propor...

Page 14: ...complished through the microprocessor SPI_DATA_OUT SPI_CLK and SYNTH_CS chip select lines U409 pins 100 1 and 47 respectively A logic high 3V from U201 pin 4 indicates to the microprocessor that the synthesizer is locked Figure 2 3 UHF Frequency Generation Unit Block Diagram Transmit modulation from the ASFICcmp U451 pin 40 is applied to U201 pin 10 MOD_IN An electronic attenuator in the ASFICcmp ...

Page 15: ...thin lock range The required frequency is then locked by the normal mode charge pump at pin 43 A loop filter C243 C245 and R243 R245 removes noise and spurs from the steering voltage applied to the VCO varactors with additional filtering located in the VCO circuit Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier made up of C221 C224 and D220 D221 Two 3...

Page 16: ... varactor D251 The buffered RF signal at U251 pin 8 is further amplified by Q280 and applied as RX_INJ to the low pass injection filter in the receiver front end circuit In the transmit mode U251 19 is driven high by U201 pin 2 enabling the transmit VCO and buffer The 403 440 MHz RF signal from U251 pin 10 is applied as TX_INJ to the input of the transmitter circuit via matching network C290 C291 ...

Page 17: ... or battery eliminator Charge or replace battery 2 Defective battery contacts Inspect battery contacts for corrosion or bent terminals Clean repair replace J301 3 Blown fuse Check voltage on each side of fuse If blown 0 VDC after fuse Check for short on output check D301 VR301 trouble shoot repair as needed replace fuse 4 DC switching fault Verify battery voltage present at S444 pin 5 when radio i...

Page 18: ...el at T42 6 is approx 6 dBm Check that RF level at U251 8 is at least 8 dBm Check injection filter C40 44 L40 41 If yes check Q280 and associ ated parts If no check U251 and components on pins 5 and 6 2 No 5R source Verify U401 49 is high in RX Verify Q311 gate is 0V dc in RX Verify Q311 drain is 5V dc in RX Check replace U401 Check replace Q313 Check for shorts check replace Q311 3 Harmonic filte...

Page 19: ... Board and IC troubleshooting table Verify steering line voltage is between 3V and 10V Check VCO tank components connected to U251 15 and 16 Check for shorts opens replace U251 Check D261 and associated components 2 Synthesizer fault Verify TRB line U201 2 to U251 19 is high 3V in TX mode Check for shorts check U201 voltages per Board and IC troubleshooting table replace U201 if incorrect 3 Progra...

Page 20: ... gain stage failure Check RF levels at Q100 and U110 per schematic Troubleshoot Q100 U110 and associated circuitry 8 Antenna switch failure Verify dc voltage at jct R122 L120 is approx 1 5V Check replace D120 121 L120 121 R120 122 etc Low Power 1 Low TX injection Check that RF level at jct R100 R101 per schematic Check U251 L291 292 C290 291 2 Low gain in TX stage Verify dc voltage at Q100 E is 0 ...

Page 21: ...e U451 Check replace R474 R476 and Q470 2 Defective mic Verify approx 1 8V dc across car tridge when side PTT button is pressed Verify audio present 10 mV rms when speaking into mic Check mic connector and R478 Replace mic cartridge 3 Defective mic jack Verify continuity between J471 pins 4 and 5 Replace J471 No EXT MIC audio 1 Mic bias fault Verify approx 1 8V dc across EXT MIC cartridge in TX mo...

Page 22: ...ge U510 9 RSSI feedback 0 74 no received signal 10 Quad detector input 2 22 11 Limiter output 1 25 12 Limiter decoupling 2 1 30 13 Limiter decoupling 1 1 30 14 Limiter input 1 28 15 Ground GND 16 IF amp output 1 22 17 IF amp decoupling 2 1 26 18 IF amp input 1 26 19 IF amp decoupling 1 1 26 20 2nd mixer output 3 09 U52 BW Select Switch 1 Inverter 1 input 0 25 kHz mode 2 Inverter 2 output 0 25 kHz ...

Page 23: ... Vcc 6 79 TX mode U201 Freq Synthesizer 1 AUX2 output NU 0 2 AUX3 output TRB 0 03 To U251 19 RX mode 3 AUX4 output NU 0 4 Lock detect output 2 98 To U401 56 5 PD Vdd 2 98 6 Digital ground GND 7 Serial data input 3 23 8 Serial clock input 0 9 Synth chip select 3 23 From U401 47 10 Modulation input 1 50 From U451 40 11 VMULT4 NU 2 98 12 VMULT3 NU 0 13 VRO 4 96 14 VMULT2 1 49 15 VMULT1 1 49 16 INDMUL...

Page 24: ... in TX mode 41 Modulation output 3 42 typ 1 62V typ in TX mode 42 CCOMP NU 0 05 43 Steering line IOUT 9 62 typ Depends on frequency 44 PD ground GND 45 Steering line IADAPT 9 62 typ Depends on frequency 46 Adapt switch NU 0 47 Voltage from charge pump 12 8 48 AUX1 output NU 2 98 U251 VCO Buffer 1 TX VCO current adjust 4 50 2 RX VCO current adjust 4 35 3 Superfiltered input 4 51 4 Collector RF in a...

Page 25: ...ass capacitor 1 26 5 Vout 4 96 U320 3 3V Regulator 1 Ground GND 2 Feedback 1 23 3 Tap NU 0 4 Vin 7 48 5 Vout 3 23 6 Sense NU 0 7 Error reset output 3 20 8 Shutdown input 7 48 U330 3V Regulator 1 Vin 7 48 2 Ground GND 3 Control input 7 48 4 Bypass capacitor 1 26 5 Vout 3 00 U401 Microprocessor 1 PD4_SCK serial clock input 0 2 PD5_SS 3 23 ASFIC chip select 3 PD6_VLIN 3 23 EEPROM chip select 4 PG7_R_...

Page 26: ...6_ADDR6 3 08 24 PF5_ADDR5 3 06 25 PF4_ADDR4 0 16 26 PF3_ADDR3 0 26 27 PF2_ADDR2 3 06 28 PF1_ADDR1 3 06 29 PFO_ADDR0 3 05 30 PC0_DATA0 0 69 31 PC1_DATA1 0 96 32 PC2_DATA2 1 10 33 PC3_DATA3 0 81 34 PC4_DATA4 0 62 35 PC5_DATA5 0 68 36 PC6_DATA6 0 67 37 PC7_DATA7 0 73 38 PH7_CSPROG 3 05 39 VDDL 3 23 40 VSSL GND 41 PH6_CSGP2 3 23 42 PH5_CSGP1 3 23 43 PH4_CSIO 0 44 PH3_PW4 3 21 On off control output 45 ...

Page 27: ...LIR 3 12 59 AVDD 3 23 60 PE7_AN7 3 20 61 PE6_AN6 3 20 62 PE5_AN5 2 91 VOX threshold detect 63 PE4_AN4 0 73 RSSI input 64 PE3_AN3 0 14 65 PE2_AN2 1 62 66 PE1_AN1 0 3 3 V Volume control wiper 67 PE0_AN0 2 48 33 of battery voltage 68 VRL 0 69 VRH 3 20 70 AVSS GND 71 PJ0_CSGP3 3 23 Side PTT button 72 PJ1_CSGP4 0 External MIC PTT 73 PJ2 3 23 74 PJ3 3 23 75 PJ4 3 23 76 PJ5 0 77 PJ6 3 23 Bottom option bu...

Page 28: ...d 92 VDDSYN 0 93 XFC NU 0 94 RESET 3 20 From U320 95 LVOUT 0 96 IRQ 3 20 97 PD0_RXD 3 23 98 PD1_TXD 1 9 99 PD2_MISO 0 100 PD3_MOSI 3 23 U402 EEPROM 1 Chip select 3 23 From U401 3 2 Serial data out 0 3 Write protect 3 23 4 Vss GND 5 Serial data in 3 23 6 Serial clock 0 7 Hold 3 23 8 Vcc 3 23 U404 Flash ROM 1 A11 3 06 2 A9 3 08 3 A8 3 05 4 A13 0 13 5 A14 0 31 6 NC 3 17 7 EN_WE 3 21 From U401 4 8 Vcc...

Page 29: ...3 01 From U401 38 31 A10 0 16 32 EN_OE 0 From U401 86 U451 ASFIC_CMP 1 VDD for analog circuits 3 00 2 DISC audio input 1 34 From U510 3 Ground for analog circuits GND 4 DACU output 0 5 DACR output 0 6 DACG output 2 38 typ Power set TX mode 7 VOX peak detector output 2 91 8 PLCAP for DC integrator 0 40 9 SQIN 0 01 10 Universal audio input output 0 11 VDD for DACs 4 95 12 SQCAP 0 13 GCB2 general pur...

Page 30: ...70 29 1200 Hz ref for MDC decode 3 00 30 GNDDO GND 31 Ground for digital circuits GND 32 Vdd for analog switches 4 96 33 Vdd for digital circuits 3 00 34 16 8 MHz master clock input 1 54 35 GCB3 general purpose output 3 00 Internal MIC enable 36 TX audio return from option 0 37 GCB4 general purpose output 0 38 GCB5 general purpose output 0 39 RX audio send to option 1 48 40 Modulation output 1 50 ...

Page 31: ...7 48 Unsquelched 7 Ground GND 8 output 3 29 Unsquelched U510 Dual Opamp 1 Unit 1 output 1 75 2 Unit 1 input 1 56 3 Unit 1 input 1 55 4 Ground GND 5 Unit 2 input 1 55 6 Unit 2 input 1 56 7 Unit 2 output 1 38 8 Vcc 4 96 1 All voltages are measured with a high impedance digital voltmeter and expressed in volts DC relative to ground 0V 2 Voltages are measured with a DC input voltage of 7 50 02 volts D...

Page 32: ...3 16 TROUBLESHOOTING TABLES ...

Page 33: ...onents The UHF schematics and the related PCB and parts list are shown in the table below 1 2 Six Layer Circuit Board The main PCB is a 6 layer circuit board the copper steps are in the layer sequence shown below Table 4 1 UHF1 Diagrams and Parts Lists PCB 8486635Z03_O Main Board Top Side 8486635Z03_O Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Radio Circuit Block Diagram Receiver Front En...

Page 34: ...ne Schematic 1 3 1 Speaker and Microphone Parts List Reference Designator Motorola Part No Description MK1 5080258E16 Microphone electret SP1 5005679X04 Speaker assembly with connector MK1 SP1 1 2 1 2 MATES WITH J470 ON RADIO BOARD MATES WITH J491 ON RADIO BOARD ...

Page 35: ...503 C504 C505 C506 C507 C513 C521 C522 C523 C524 CR1 D251 D261 D262 D301 D424 D470 D471 E452 E500 F301 4 3 2 FL53 4 3 2 FL54 J140 3 2 J301 J470 6 4 7 5 2 3 J471 L1 L2 L3 L21 L31 L32 L33 L34 L55 L211 L251 L252 L254 L255 L262 L264 L265 L281 L283 L471 M140 Q21 Q171 Q280 Q402 Q403 Q440 Q472 R22 R24 R25 R61 R63 R205 R212 R220 R221 R223 R230 R243 R244 R245 R247 R253 R254 R261 R262 R263 R264 R280 R281 R2...

Page 36: ...81 L100 L101 L102 L103 L110 L120 L121 L130 L131 L132 L140 L141 L270 L271 L272 L276 L282 L291 L292 Q22 Q51 Q70 4 3 2 Q100 Q150 1 6 3 4 Q170 Q311 Q312 4 3 Q313 4 3 Q410 Q470 4 3 Q471 Q481 Q482 4 3 Q490 Q493 4 3 Q494 Q520 R20 R21 R23 R40 R51 R52 R53 R54 R55 R57 R60 R62 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151...

Page 37: ...CO_MOD V_SF V_STEER 5R IF_OUT RX_IN RX_INJ 16_8_MHZ 3V 5V LOCK MOD_IN PRESC SPI_CLK SPI_DATA_OUT SYNTH_CS TRB VCO_MOD V_SF V_STEER 5T PWR_SET RX_OUT TX_ENA USWB 5V 5R 3V USWB 5V BW_SEL DEMOD IF_IN RSSI TX_ENA USWB 3V 5T 5T 5V 5R 3V 5R 5V 16_8_MHZ 3V 5R 5T 5V BW_SEL DEMOD LOCK MOD_OUT PWR_SET RSSI SPI_CLK SPI_DATA_OUT SYNTH_CS UHF1 Radio Circuit Block Diagram ...

Page 38: ...pF BFS505 Q21 1 3 FE_IF_OUT C35 1 12pF 0 C48 RF BALUN 5 NC 4 6 3 2 1 T41 30pF NU C47 TP1 1 C43 1 13pF 1 C10 R24 1 2K C39 1 12pF TP2 1 SH1 SHIELD 1 1 3 2 18nH L55 CR1 2 4pF C30 1 22pF C13 4 2 9 1pF 1 1 C27 NU C46 C42 1 8pF 5 6 C6 1 0 10pF 390pF C25 R51 390pF 10 C21 L51 150nH 51 L2 2 9 85nH L32 27nH 9 85nH 2 L33 2 9 85nH L41 C38 1 16pF 2 5 6 3 1 4 UMT1 Q22 C32 1 3 7 5pF C41 15pF 1 C28 1 15pF C14 L1 ...

Page 39: ...T IN 1 0 1uF 44 395MHz TSS2_44_395MHZ Y51 2 GND 4 GND1 3 2 CC1 5 CC2 1 GND1 4 GND2 3 IN 6 OUT 44 85MHz MXF45 FL51 4 VCC 8 C58 3 9pF PWR_GND U52 4 GND R81 10uF C91 0 1uF C65 1K R75 12K 20K C57 0 1uF 9180468V04 3 GND IN 1 OU T 2 R64 FLTR FL52 C81 1 33pF C70 IF_IN RFIN RFIN_DEC 2 5 RSSIOUT RSSI_FEED 9 6 VCC 130pF LIMIN LIMOUT 11 13 LIM_DEC1 12 LIM_DEC2 20 MIXOUT OSCIN 4 3 OSCOUT 10 QUADIN 1 AUDIOOUT ...

Page 40: ...OUT 17 NC1 29 NC2 31 NC3 44 PD_GND PD_VDD 5 32 CLK 7 DATA 6 DGND 36 DVDD 19 FREFOUT 45 IADAPT 16 INDMULT 43 IOUT LOCK AUX2 2 AUX3 3 AUX4 20 AVDD 40 BIAS1 39 BIAS2 42 CCOMP 9 CEX 8 46 ADAPTSW 22 AGND 48 AUX1 1 1 63A27 U201 FN_MOD TP200 C223 01uF 01uF TP240 1 C213 L211 390nH NU R212 0 R206 1 K1 2 K2 3 K3 6 A1 5 A2 4 A3 C221 D221 01uF 2 2uF C215 2 2uF FN_V_SF C218 C230 2 2uF C240 NC FN_VCO_MOD 1 3pF ...

Page 41: ...91 C271 L271 390pF R272 NU 1 5 6K 0 1uF SH253 SHIELD SH250 SHIELD 1 C274 L262 27nH C268 20 0 5pF VCO_RX_INJ R253 V_SF 4 7K 33 2 12 5nH R280 C256 2 8 3 6pF L264 33nH V_SF 910 NC L281 L255 R282 22K NC 220nH 130 R261 R283 6 8pF 1 5 C267 C272 0 1uF L276 R284 330 R277 27nH R276 NU 0 C251 0888600M03 VCO_3V 8 2K 150pF 220nH R281 V_SF L272 L291 6 8nH 100 R254 C252 C276 3 9pF NU L252 27nH 3 6pF C282 R262 6...

Page 42: ...100 220nH 820 0 1uF C101 L100 R158 5 1K 390pF C151 390pF C172 3pF C107 1 8K R111 C525 PA_RX_OU T 390pF 2 3 4 1 C170 390pF PA_PWR_SET BFG540W Q100 R110 PA_TX_ENA 510 Q171 R152 1 100K Q150 1 3 2 R159 0 390pF C158 390pF R103 C154 R157 2 2K 3K R101 5 6 R121 150 C122 9 1pF U150 2 LM2904 6 5 7 8 4 R162 8 7nH L102 10K 820 R102 PA_USWB 390pF C113 390pF C152 330 R156 220pF C124 0 47uF C153 C121 390pF C105 ...

Page 43: ...F Circuit Ref Motorola Part No Description C107 2113743N13 CAP 3pF C108 2113743L07 CAP 390pF C109 2113743M24 CAP 0 1uF C111 2113743L07 CAP 390pF C112 2113743M24 CAP 0 1uF C113 2113743L07 CAP 390pF C114 2113743L07 CAP 390pF C115 2311049A07 CAPP 1uF C116 2113743M24 CAP 0 1uF C117 2113740F65 CAP 390pF C120 Not_Placed CAP 8 2pF C121 2113743L07 CAP 390pF C122 2113740F26 CAP 9 1pF C123 2113740F21 CAP 5 ...

Page 44: ...C458 2113743E20 CAP 0 1uF C459 2113743E20 CAP 0 1uF C460 2113743E20 CAP 0 1uF C461 2113743L17 CAP 1000pF Circuit Ref Motorola Part No Description C462 2113743E20 CAP 0 1uF C463 2113743E20 CAP 0 1uF C464 2113743E20 CAP 0 1uF C465 2113743L17 CAP 1000pF C466 Not_Placed CAP 470pF C467 2113743L19 CAP 1200pF C470 2113743E20 CAP 0 1uF C471 2113743F18 CAP 2 2uF C472 2113743E20 CAP 0 1uF C473 2113743N54 CA...

Page 45: ...7M92 RES 5 6K R21 0662057M47 RES 75 R22 0662057M92 RES 5 6K R23 0662057N09 RES 27K R24 0662057M76 RES 1 2K R25 0662057M92 RES 5 6K R40 0662057M74 RES 1K Circuit Ref Motorola Part No Description R51 0662057M43 RES 51 R52 0662057N01 RES 12K R53 0662057N11 RES 33K R54 0662057M91 RES 5 1K R55 0662057M62 RES 330 R57 0662057M90 RES 4 7K R60 0662057M83 RES 2 4K R61 0662057N23 RES 100K R62 0662057M86 RES ...

Page 46: ..._Placed RES 10K R497 Not_Placed RES 1MEG R498 Not_Placed RES 47K R499 Not_Placed RES 270K R501 0662057M50 RES 100 R502 0662057M50 RES 100 R503 0662057M50 RES 100 R504 0662057M50 RES 100 R505 0662057M50 RES 100 R506 0662057M50 RES 100 R507 0662057M50 RES 100 R508 0662057N23 RES 100K R509 0662057N23 RES 100K R510 0662057N35 RES 330K Circuit Ref Motorola Part No Description R511 0662057N23 RES 100K R...

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