Motorola Cm Radio Vhf2 Information Manual
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Chapter 4 VHF2 PCB/ SCHEMATICS/ PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards 1.1 VHF2 and Controller Circuits The VHF circuits are contained on the printed circuit board (PCB) which also contains the Controller circuits. This Chapter shows the schematics for both the VHF circuits and the Controller circuits. The PCB component layouts and the Parts Lists in this Chapter show both the Controller and VHF circuit components. The VHF and Controller schematics and the related PCB and parts...
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4-2VHF2 PCB/ SCHEMATICS/ PARTS LISTS THIS PAGE INTENTIONALLY LEFT BLANK
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VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics4-32.0 VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics 73D02968C63-0 SHEET 1 OF 8 TX_EN TX_INJ9VCOMP_B+ DET_VFWD DET_VRVSFILT_SW_B+ INTEGRATOR PA_BIAS PA_CURRENTPWR_SET RX RX_EN TX_EN TX_INJ 9V FILT_SW_B+ 9V COMP_B+ DET-VFWD DET_VRVS FILT_SW_B+ INTEGRATOR PA_BIAS PA_CURRENTPWR_SET RX RX_EN VHF2 Interconnection between Main Board and Power Amplifier Compartment
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4-4VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics SHOWN FROM SIDE 1 C301 C302 C303 C304 C305 C306 C307C308 C309 C310 C311 C312C313 C314 C315 C316C317C318 C319 C320 C322 C335 C336 C352C353 C356C357 C359 C360 C364 C367 C402 C406 C411 C414 C418 C490 C602 C603 C604 C605 C606 C607 C608 C609 C610C611 C612 C613C614 C615C617 C618 C619 C620 C621 C622C623 C624 C625 C626 C627 C628 C629 C630C631 C632C633 C662 C678 C1001 C1004 C1005 C1007 C1008 C1009 C1011C1012 C1013C1014 C1015 C1016C1017 C1018 C1019 C1020C1021...
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VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics4-5 SHOWN FROM SIDE 2 C300 C321 C323 C324 C325 C326 C327 C328 C329 C330 C331 C332 C333 C334 C337 C338 C339 C340 C341C342 C343 C344 C345 C346 C347C348 C349 C350 C351 C354 C355 C361C362 C363 C365 C366 C400C401 C403 C404 C405C407 C408 C410C412 C413 C415 C416 C417 C421 C422C423 C1000 C1002 C1003 C1006 C1010 C1025 C1027 C1028 C1029 C1032C1035 C1036 C1038 C1040 C1042 C1043 C1045 C1046 C1048 C1050 C1051 C1053 C1054 C1055 C1056 C1058 C1059 C1060C1061C1062C1066...
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4-6VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics Option Board Connector Accessory Connector Control Head Connector28 pins connector TX AUDIO SEND DETECTOR AUDIO SENDTX AUDIO RETURN UNMUTED RX AUDIO SEND POST-LIMITER FLAT TX AUDIO RETURN RX AUDIO RETURN OPTION BOARD ENABLE DATA READY/REQUESTRESET DIGITAL 3.3 VOLT SUPPLY GND VOICE STORAGE INT GND EXTERNAL MIC ANALOG 3 VOLT SUPPLY SERIAL CLOCK SERIAL DATA RETURN SERIAL DATA SEND PUSH TO TALK DISPLAY DRIVER CHIP SELECT NC BACKLIGHT KEYPAD ROW KEYPAD...
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VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics4-7 DC Connector DC & AUDIO TO SHEET 1 PEDS FOR GND CONTACTS CONTACTS FOR PA CLIP 73D02968C63-0 SHEET4OF8 9R SPI_MOSISPI_CLK ASFIC_CS RX_AUDIO_RETURN_OPT_BRD CH_ACT 5V uP_CLK F1200 HSIO LSIO 3V VS_MICPWR_SET GND1 9V 5V DET-VFWD 1 GND 1 GND 3V PLTD_HOLE3_5x7_0_TRIMMEDM7 1 GND TP3 TEST_POINT1 FILT_SW_B+ 9V P2-1 1 M110 P2-2 2 D3_3V5V 1M112 GND 16.8MHz3V 5V 9R MOD_IN RX_INJ SPI_CLK SPI_MOSI SYNTH_CS SYNTH_LOCKTX_INJ BOARD HOLES (SOURCE) (SOURCE)(SOURCE)...
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4-8VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics 120. R102 10u MRF1513’s Thermal pad DNP DNPDNP (SOURCE) 0.8*25 1.542*4 TO SHEET 2 V_CNTRL DNP DNP 1n 1019447 V_CTRL_PREDRIVERRX_EN RX_EN 9V FILT_SW_B+PA_BIASCOMP_B+ TX_INJ Q10522n 22n1IF110 R182 10.KC1089 1019447 C1039 1 TP150 TEST_POINT L110 12.0n22.K L121 FLT_9V C1069 DNP 1019447 1n 1nC1068 1nC1070 C1029 C1066 100n 1n C1103 33n C1120 33p C1117 47p 33p C1119 C1118 33p C1031 22n L105 68.n L104 68.n L107 4.22n 51.0 R105 51.0R123 R1062.7 1n C1062 C1061 1n...
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VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics4-9 PWR_SET Final_cur_sense PA_FILT_B+ TX_ENPA_CURRENT FILT_SW_B+_PA TO SHEET 1 73D02968C63-0 DNP DNP DNP DNP DNPDNP DNP DNP DNP Place near both sides of PA shields DNP DNP PA’s Temp. Sensor Coupler width 2.032 7.5 SHEET 2 OF 8 1.2u RX R172 C1013 13.p C1008 120.00p C1004 150.p C1005L126 J11-5 G2 S3 S4GND1 GND2S2 S1 V_forward 10.p C1007C102118.0n L116 C1009 100.p 100.p L115 18.0n 150.p G 56.p D C1121 C1019 V_reverse Final_cur_sense V_REF_OPAMP DET_VFWD...
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4-10VHF2 1-25W PCB 8488977U01 (rev. C) / Schematics 4 1 VCON 46 ADAPTSW AVDD20 AUX43 AUX32 AUX21 AUX148 2.7p AGND 22 DVDD36 DGND 6 DATA 3V 3V 7 C2005 CLK 8 CEX 9 CCOMP 42BIAS2 39BIAS1 40 NC1MODOUT41 MODIN 10 C2053 100p 4 1LOCKIOUT43 INDMULT16 IADAPT45 FREFOUT19 PRE_GND 33 PREIN 32 5 PD_VDD PD_GND 44 NC3 31NC2 TP201 TEST_POINT 29 17 SFOUT SFIN 30 SFCAP 26 SFBASE 27 REFSEL 18PVREF 35 PRE_VDD34 VMULT214 VMULT115VCP47 VBPASS 21 TEST238 TEST137 28 100.n U200 FRACN_63A27XTAL224 XTAL123 C2020 100n WARP25...