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Motorola GP340 ATEX, Service Information

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MOTOROLA

Professional  Radio

 

GP Series

300R1  (300 - 350M Hz)

 

Service  Information

Issue:  June 2002

Summary of Contents for GP340 ATEX

Page 1: ...MOTOROLA Professional Radio GP Series 300R1 300 350MHz Service Information Issue June 2002 ...

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: ...Control Circuit 2 5 4 0 Frequency Generation Circuitry 2 6 4 1 Synthesizer 2 6 4 2 Voltage Controlled Oscillator VCO 2 8 Chapter 3 TROUBLESHOOTING CHARTS 1 0 Troubleshooting Flow Chart for Receiver Sheet 1 of 2 3 1 2 0 Troubleshooting Flow Chart for Receiver Sheet 2 of 2 3 2 3 0 Troubleshooting Flow Chart for Transmitter 3 3 4 0 Troubleshooting Flow Chart for Synthesizer 3 4 5 0 Troubleshooting Fl...

Page 4: ...008_ Battery NiMH Standard x Indicates one of each is required 2 0 GP640 GP680 Model Chart Professional GP600 Series 300 350MHz Model Description MDH25EDC9CK3_E GP640 300R1 300 350 MHz 4W MDH25EDH9CK6_E GP680 300R1 300 350 MHz 4W Item Description X PMLD4125_ GP640 300R1 Back Cover Kit X PMLD4126_ GP680 300R1 Back Cover Kit X 6864110B14_ GP640 Basic User Guide X 6864110B19_ GP680 Basic User Guide X...

Page 5: ...gm GP340 GP640 GP680 With Standard high capacity NiMH battery 420 428 With Ultra high capacity NiMH battery 500 508 With NiCD battery 450 458 With Lilon battery 350 358 Average Battery Life 5 5 90 Cycle Low Power High Power With Standard high capacity NiMH battery 11 hours 8 hours With Ultra high capacity NiMH battery 14 hours 11 hours With NiCD battery 12 hours 9 hours With Lilon battery 11 hours...

Page 6: ...00 3000 Hz 1 to 3 dB Audio Distortion 5 typical Receiver 300R1 Frequencies Full Bandsplit 300 350 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD EIA Sensitivity 20 dB SINAD ETS 0 35 pV typical 0 50 pV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity 60 dB 12 5 kHz 70 dB 25 kHz Spurious Rejection 70 dB Rated Audio 0 5W Audio Distortion Rated Audio 3 typical Hum Noise 45 dB...

Page 7: ... amplifier antenna switch harmonic filter antenna matching network power control integrated circuit PCIC From VCO I___________________________________________ i Figure 2 1 Transmitter Block Diagram 2 1 Power Amplifier The power amplifier consists of two devices 1 9Z67 LDMOS driver IC U101 and 2 PRF1507 LDMOS PA Q110 The 9Z67 LDMOS driver IC contains 2 stages of amplification with a supply voltage ...

Page 8: ...a given ripple level The harmonic filter insertion loss is typically less than 1 2dB 2 4 Antenna Matching Network A matching network which is made up of L116 is used to match the antenna s impedance to the harmonic filter This will optimize the performance of the transmitter and receiver into an antenna 2 5 Power Control Integrated Circuit PCIC The transmitter uses the Power Control IC PCIC U102 t...

Page 9: ...r comprises of L301 L302 C302 C303 C304 CR301 and CR302 The bandpass filter is tuned by applying a control voltage to the varactor diodes CR301 and CR302 in the filter The bandpass filter is electronically tuned by the DACRx from U404 which is controlled by the microprocessor Depending on the carrier frequency the DACRx will supply the tuned voltage to the varactor diodes in the filter Wideband op...

Page 10: ...nd the amount of filtering which is dependent on the radio channel spacing is controlled by the microprocessor Additional filtering once externally provided by the conventional ceramic filters is replaced by internal filters in the IF module U301 The IF IC uses a type of direct conversion process whereby the externally generated second LO frequency is divided by two in U301 so that it is very clos...

Page 11: ... Q315 is an NPN transistor used for switching here Maximum current flowing through the PIN is mainly limited by the resistor R319 Radio signal strength indicator RSSI a voltage signal is used to drive Q315 to saturation hence turning it on RSSI is produced by U301 and is proportional to the gain of the RF amplifier and the input RF signal power to the radio Resistor network at the input to the bas...

Page 12: ...gh the data clock and chip select lines from the microprocessor A 3 3V dc signal from synthesizer lock detect line indicates to the microprocessor that the synthesizer is locked Transmit modulation from the ASFIC is supplied to pin10 of U201 Internally the audio is digitized by the Fractional N and applied to the loop divider to provide the low port modulation The audio runs through an internal at...

Page 13: ...phase are first shifted to 5V then along with regulated 5V put through arrays of diodes and capacitors to build up 13 3V at pin 47 of U201 DATA U409 PIN 100 C LO C K U409 PIN 1 C SX U409 PIN 2 MOD IN U 404 PIN 40 5V U247 PIN 4 U248 PIN 5 10 13 30 36 23 24 25 32 47 VO LTAG E M ULTIPLIER DATA LOCK CLK FREFO UT CEX U251 GND M ODIN LO W VO LTAG E FRACTIO NAL N IOUT V CC DC5V SYN TH ESIZER IADAPT V DD ...

Page 14: ...e RF signal from the enabled oscillator is routed from U241 pin 12 through a low pass filter to the prescaler input U201 pin 32 After frequency comparison in the synthesizer a resultant CONTROL VOLTAGE is received at the VCO This voltage is a DC voltage between 3 5V and 9 5V when the PLL is locked on frequency The VCOBIC U241 is operated at 4 54 V VSF and Fractional N synthesizer U201 at 3 3V This...

Page 15: ...e mixer at T302 During the transmit condition when PTT is depressed five volts is applied to U241 pin 19 This activates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241 The RF signal at U241 pin 10 is injected into the input of the PA module U101 pin16 This RF signal is the TX RF INJECTION Also in transmit mode the audio signal to be frequency modulated onto the...

Page 16: ...Chapter 3 TROUBLESHOOTING CHARTS 1 0 Troubleshooting Flow Chart for Receiver Sheet 1 of 2 Check FGU ...

Page 17: ...3 2 TROUBLESHOOTING CHARTS 2 0 Troubleshooting Flow Chart for Receiver Sheet 2 of 2 Check U404 voltage U404 can be selected by MCU before replacing U404 ...

Page 18: ...Troubleshooting Flow Chart for Transmitter 3 3 3 0 Troubleshooting Flow Chart for Transmitter ...

Page 19: ...3 4 TROUBLESHOOTING CHARTS 4 0 Troubleshooting Flow Chart for Synthesizer ...

Page 20: ...Troubleshooting Flow Chart for VCO 3 5 5 0 Troubleshooting Flow Chart for VCO Check for faulty Change Q261 parts or dry joints of L271 L273 C370 C386 R339 L320 Change U241 ...

Page 21: ...tics and the related PCB and parts list are shown in the tables below Table 4 1 Diagrams and Parts Lists PCB 8485726Z01 Main Board Top Side Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Controls and Switches Page 4 5 Receiver Front End Page 4 6 Receiver Back End Page 4 7 Synthesizer Page 4 8 Voltage Controlled Oscillator Page 4 9 Transmitter Page 4 10 Parts List Page 4 11 Table 4 2 Diagrams ...

Page 22: ...2 É PC D R346 С350 о ю R506 О SH321 С512 О Q505 R505 С251 С253 С289 Q261 _ С247 С248 Т Щ i 4 8 1 L253 3 шп и 8Ü r f О L282 С273 ПЗ см сп1 1 с м ш ш о CD Ш 05 i i Ш 1 L243 3 О г L301 С304 CR30 Ï 2 R301 C iiÖ CRU Ç3Q1 f l Ö ш L Q ю О О VR443 3 4 CR503 2 I IR501 SH241 L160 С121 о Ш а С160 R108 O n С U101 о С115 О оС С И 6 C D с о оПШ C i 7 С11 L117 R174 О о O C 11S R 120 i 173 С 171 Q110 3 16 16 L107...

Page 23: ...___ P100 fÜ 4 2 CR105 L505 VR506 C522 C277 0 C523 0 M400 C278 R SH202 C503 0 SH304 I CR306 0 I CR501 2Ü E10 1 C123 C208 CR203 C R3 lü 1 S U210 4 3 U211 П f il SH242 C128 O C 7 0 C150a C 1 3 C152 g D C E f a 1 0 Rz30 __ о ы O R 1 3 1 C133 O R ou R132 0 109 M100 M300 ZMY0130347 O 300R1 300 350MHz Main Board Solder Side ...

Page 24: ...X_IN RX_INJ 5V û R5 5V Vdda SWB CSX MODIN DATA FGU CLK LOCK 16 8MHz RX_ INJ 4V_3 3V TX_INJ T A 4V_3 3V UNSWB 5V UNSWB 5V TRANSMITTER CSX DATA CLK RESET RX_IN TX_INJ LVZIF_SEL DACRX DATA d CLK DEMOD RSSI CSX MODIN LOCK RESET Vdda SWB PB501 SW ITCH Vdda GREEN_LED S501 ZMY0130015 A 300R1 300 350MHz Controls and Switches ...

Page 25: ...C 312 9 1pF 49 5dBm 300 01MHz 47 0dBm 349 99MHz C311 NU R 306 100K C 316 4 7pF R 307 100K C 313 13pF L306 22 54nH 52 5dBm 300 01MHz 53 5dBm 349 99MHz C 318 9 1pF O IF C R 306 4 3 L307 22 54nH R329 0 A M _____________4_J C 317 13pF 23 5dBm 254 91MHz 28 5dBm 304 89MHz C R 308 H S M P 3820 A wi f z r n C 395 330pF R 317 1K C331 330pF R336 NU R5 C 333 NU C 396 NU C 370 330pF Q 315 1 R316 91K W v 0 508...

Page 26: ...2 D 8 3 I O о MLPD_CR c BRP_OFF BROWN_VCC FREF GND CEX CLK DATA TESTA IOUT 3 GOLD_VSS COL 47dBm 45 1MHz C323 150pF L311 750nH _ r v r n _ FL301 XTAL TBD 51 2dBm 45 1MHz C324 20pF R351 0 л w C325 01uF C326 01uF C327 R311 100pF 30K R312 2 4K R313 330 y Q302 R352 3 3K R315 12K C328 0 1uF C330 10pF L330 i 680nH C338 15pF RSSI DA DB R344 12K A V C358 1200pF C359 0 1uF C383 100pF V d d _ F IL T E R E D ...

Page 27: ... ю CO CM CO Cl Cl Cl Cl O CL w г о о о о ел o XTAL1 XTAL2 FREFOUT MODOUT MODIN DATA SFIN PVREF VBPASS BIAS1 BIAS2 SFCAP SFBASE PREIN VMULT1 VMULT2 VMULT3 VMULT4 AUX1 AUX2 U201 AUX3 6 3 A 2 7 AUX4 TEST1 TEST2 IOUT IADAPT LOCK ADAPTSW SFOUT NC2 9 9 IC5 INDMULT REFSEL CCOMP NC1 C202 1000pF Z Z _ NC3 WARP Cl 0 0 CDI CMICOI Tfl C203 4 7uF U247 ADP3300 1 _C291 J0 u F ERR SD OUT IN NR 3 5 s i _ ____ 11__...

Page 28: ...PCB 8485726Z01 Schematics 4 9 R X _ IN J ZMY0130403 O V S F 300R1 300 350MHz Voltage Controlled Oscillator ...

Page 29: ...F_JACK L104 19 61nH r r m C101 100pF C102 C103 C104 C106 11pF 22pF p 1 1 p F 6 2pF RX_IN C107 3 3pF C188 100pF J102 ANTENNA_NUT г TAB5 TAB2 TAB4 TAB1 TAB3 5 4 3 H101 HEATSINK i L116 23 57nH C140 NU C141 n u R170 240 R101 240 R174 NU C180 C115 NU NU TX_INJ g UNSW B П 7 19V Tx V 7 C 119 330pF _C171 330pF SH100 SHIELD SH101 SHIELD RESET A2 A1 CR102 3 K 3 POS HF SHIELD PA SHIELD ZMY0130401 O 300R1 300...

Page 30: ...7 CAP CHIP 470 UF 10 16V Circuit Ref Motorola Part No Description C294 2113743L05 CAP CHIP 330 PF 10 X7R C295 2113743N50 CAP CHIP 100 PF 5 COG C296 2113743M24 CAP CHIP 100000 PF 80 20 Y5V C297 2113743L41 CAP CHIP 10000 PF 10 X7R C298 2113743M24 CAP CHIP 100000 PF 80 20 Y5V C301 2113743N25 CAP CHIP 9 1 PF 5PF COG C302 2113743N29 CAP CHIP 13 0 PF 5 COG C303 2113740L10 CAP CER CHIP 4 7 PF 0 1 PF C304...

Page 31: ... 0NH 1005 L160 2413926H14 IND CHIP 15 0 NH 5 L201 2462587Q20 IND CHIP 2 200NH 20 L202 2462587Q20 IND CHIP 2 200NH 20 Circuit Ref Motorola Part No Description CO O CM _ 1 2462587Q20 IND CHIP 2 200NH 20 L232 2462587P25 CHIP IND 12000 NH 5 L241 2462587V41 IND CHIP 390 NH 10 L242 2462587V38 CHIP IND 220 NH 5 0805 L243 2460593C02 COIL MULT LAYRD TAP TEF RESN L251 2462587V36 CHIP IND 150NH 5 0805 L253 2...

Page 32: ...0 5 20X40 R478 0662057M98 RES CHIP 10K 5 20X40 R481 0662057N08 RES CHIP 24K 5 20X40 R492 0662057M01 RES CHIP 0 5 20X40 R501 0662057M70 RES CHIP 680 5 20X40 R502 0662057M56 RES CHIP 180 5 20X40 R505 0662057M98 RES CHIP 10K 5 20X40 R506 0662057N15 RES CHIP 47K 5 20X40 R507 0662057M01 RES CHIP 0 5 20X40 RT300 0680590Z01 THERMISTOR_33K RT400 0680590Z01 THERMISTOR 33K S501 4080710Z02 SWITCH FREQUENCY S...

Page 33: ...5 R 5 0 5 C 5 1 2 C 5 1 3 C 121 IL160 C 1 6 0 R 1 0 8 C 115 L117 1 7 5 C lU U U lM J U l В P P Al 1 1 1 o p o W E T 4 C 1 1 9 m m g Ю CO CO O O O 6 2 9 C 1 2 9 Ш 2 Q 110 3 1 T H a C 1 6 6 C 131 C 111 0 m 3 4 C R 5 0 3 2 V R 4 C 5 2 0 C 3 O L101 S H 101 C 1 4 1 I P B 504 PB501 C 3 9 7 L282 P B 505 L10 9 L10 8 L104 8 L116 L102 L107 L1 0 5 L114 L1 0 6 S H 241 S H 1 0 0 ZMY0130348 A 300R1 300 350MHz M...

Page 34: ...PCB 8485726Z04 Schematics 4 15 C 522 CD C 5 2 3 4 2 Y201 3 M301 M 1 0 1 M 400 ZMY0130347 A 300R1 300 350MHz Main Board Solder Side ...

Page 35: ... Г 1 1 1 с O C522 VR441 I 01uF 6 8 V PB503 SW ITCH C523 01uF VR442 6 8 V PB504 SW ITCH P T T 2 1 Г 1 1 о O VR444 EMER A 1 p K1 A2 K2 A3 K3 RED_LED 300R1 300 350MHz Controls and Switches PB505 SW ITCH 2 1 1 1 1 C520 O O VR443 01uF 6 8 V RTA3 RTA0 RTA1 RTA2 C 5 1 100pF S501 SW ITCH C512 C 5 13_ 100pF 100pF C514 100pF PC0 PC1 PC2 PC3 C0 C1 GND GND1 ZMY0130807 O if 2 SB1 2 SB3 Vdda 4 3 2 4 8 C1 7 9 ...

Page 36: ...PCB 8485726Z04 Schematics 4 17 DACRx 300R1 300 350MHz Receiver Front End ...

Page 37: ...û 3 OÛ J U301 3 2 D 8 3 M СО тГ Ю I O CO CL X LLLU CL O 3 IO o MLPD_CR c BRP_OFF L BROWN_VCC FREF GND CEX CLK DATA TESTA IOUT 0 GOLD_VSS COL U1 ш S со FL301 XTAL TBD 51 2dBm 45 1MHz C324 20pF 4 h O i Cd CO QQQQ Z Z Z Z 0 0 0 0 C327 R311 100pF 30K I I R351 0 ЛЛЛг C325 01uF R312 2 4K y R352 3 3K R315 12K C330 10pF RSSI R344 12K A A A r C358 1200pF C359 0 1uF C334 __ 022uF 16 8 M H z Il L V Z IF _ S ...

Page 38: ...PCB 8485726Z04 Schematics 4 19 300R1 300 350MHz Synthesizer ...

Page 39: ...4 20 PCB 8485726Z04 Schematics VSF IVCTRL 300R1 300 350MHz Voltage Controlled Oscillator ...

Page 40: ...PCB 8485726Z04 Schematics 4 21 TX_OUT E101 BEAD R102 ZMY0130811 O 300R1 300 350MHz Transmitter ...

Page 41: ...CAP CHIP 470 UF 10 16V C294 2113743N50 CAP CHIP 100 PF 10 X7R Circuit Ref Motorola Part No Description C295 2113743N50 CAP CHIP 100 PF 5 COG C296 2113743M24 CAP CHIP 100000 PF 80 20 Y5V C297 2113743L41 CAP CHIP 10000 PF 10 X7R C298 2113743M24 CAP CHIP 100000 PF 80 20 Y5V C301 2113743N24 CAP CHIP 8 2 PF 5PF COG C302 2113743N28 CAP CHIP 12 0 PF 5 COG C303 2113740L11 CAP CER CHIP 5 1 PF 0 1PF C304 21...

Page 42: ... INDUC 23 57 L117 2409154M17 IND CER MLTILYR 22 0NH 1005 L160 2413926H14 IND CHIP 15 0 NH 5 L201 2462587Q20 IND CHIP 2 200NH 20 L202 2462587Q20 IND CHIP 2 200NH 20 L203 2462587Q20 IND CHIP 2 200NH 20 Circuit Ref Motorola Part No Description L232 2462587P25 CHIP IND 12000 NH 5 L241 2462587V41 IND CHIP 390 NH 10 L242 2462587V41 IND CHIP 390 NH 10 L243 2460593C02 COIL MULT LAYRD TAP TEF RESN L251 246...

Page 43: ... R473 0662057M26 RES CHIP 10 5 20X40 R475 0662057M01 RES CHIP 0 5 20X40 R476 0662057N35 RES CHIP 330K 5 20X40 R477 0662057M74 RES CHIP 1000 5 20X40 R478 0662057M98 RES CHIP 10K 5 20X40 R481 0662057N08 RES CHIP 24K 5 20X40 R492 0662057M01 RES CHIP 0 5 20X40 R501 0662057M70 RES CHIP 680 5 20X40 R502 0662057M56 RES CHIP 180 5 20X40 R505 0662057M98 RES CHIP 10K 5 20X40 R506 0662057N15 RES CHIP 47K 5 2...

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