Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual
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Troubleshooting Flow Chart for 40W Transmitter 3-3 2.0 Troubleshooting Flow Chart for 40W Transmitter (Sheet 1 of 2) Control Volt- age at TP4533 >1V Current increase when keyed?NO YES START Check if Pressure Pad closes S5440 Check Components between Q4441 and RF Output, Antenna Switch D4471,D4472,Q4472, VR4471,Q4471>500mA & 6A 4V DCReplace PCIC U4501 NO YESTP4530 9.1V DC If U4201 Pin 2 is high, replace PCIC U4501,otherwise check controller and FGU YES NOTP4531 >0.5V DC?Replace PCIC U4501 Check Forward Power Sense Circuit (D4451) Check Forward Power Sense Circuit (D4451)NO YESPCIC U4501 Pin 5 > 1V DC? Check Power Setting, Tuning & Components between PCIC Pin 5 and ASFIC (U0221) Pin 4 before replacing ASFIC No or too low Power when keyed Put in pressure pad YESNO 1 Is Q4473 OK? Change Q4473 NO YES Check voltage on pin 4 U4501NO YES Check R4422-5 and go back to top 1
3-4 Troubleshooting Flow Chart for 40W Transmitter 2.1Troubleshooting Flow Chart for 40W Transmitter (Sheet 2 of 2) Check PA Stages YES Check MOSBIAS_2/ MOSBIAS_3 YES Are D4471 & D4472 OK? Check ASFIC NO YES Check Q4421 gate (12kohm) and drain resis- tances (15kohm) NOChange Q4421 Is drive from VCO >+4dBm?Do visual check on all components YES Is voltage drop across R4497 >4.5V? NO 1 Check PCIC_MOS BIAS_1Check PCIC Change D4471 & D4472 Check Q4441 gate (63kohm) and drain resis- tances (15kohm) NO YES Change Q4441 NO Change U4401YES YESNO NO Troubleshoot VCO
Troubleshooting Flow Chart for Synthesizer3-5 3.0 Troubleshooting Flow Chart for Synthesizer 5V at pin 6 of D4201 Is information from µP U0101 correct ? Is U4201 Pin 47 at = 13VDC ? Is U4301 Pin 19 4.5 VDC in TX? (at VCO section) ? Sta rt Visual check of the Board OK?Correct Problem Check 5V Regulator U4211 +5V at U4201 Pins 13 & 30 ? Is 16.8MHz Signal at U4201 Pin 19 ? Check Y4261 / Y4262 and associated parts Are signals at Pins 14 &15 of U4201 ? Check R4201Check C4381 Is U4201 Pin 2 >4.5 VDC in Tx &
3-6Troubleshooting Flow Chart for VCO 4.0 Troubleshooting Flow Chart for VCO Are Q4332 Base at 0.7V Collector at 4.5V Emitter at 110mV Are Q4301 Base at 2.4V Collector at 4.5V Emitter at 1.7VAre U4301 Pins 13 at 4.4V 15 at 1.1V 10 at 4.5V 16 at 1.9V Low or no RF Signal at TP4003 Visual check of board OK? 35mV DC at U4301 Pin 19 NO YES Replace Q4301 at base of Q4332 NO NO NO NO YES YES YESYESLow or no RF Signal at input to PA 4.8V DC at U4301 Pin 19 Is RF available at C4402 YES YESYES YES NO NO NO NO NO Audio =180mVrmsat “-” Side of 4.5VDC at CR4321 If C4321 and R4321 are OK, then replace CR4321 Replace C4322 Replace C4325 NONO YES YES If parts between R4402 & U4301 Pin10 are OK, replace U4301 TX VCO RX VCO Correct ProblemVisual check of board OK? Check runner between U4201 Pin 2 and U4301 Pin 19 Is RF available If all parts from U4301 Pin 8 to Base of Q4332 are OK, replace U4301 If all parts associated with the pins are OK, replace Q4332 If all parts from collector of Q4332 to TP4003 are OK, Replace Q4332 Power OK but no modulation Check parts from R4402 to U4401 Pin16 If all parts associated with the pins are OK, replace U4301 YESYES Make sure Synthesizer is working correctly and runner between U4201 Pin 28 and U4301 Pin 14 & 18 are OK 4.5V DC OK ? OK? OK? C4325 at U4301 Pin 14 & 18 4.5V DC OK ? at U4301 Pin 14 &18 NO
4-1 Section 4 UHF PCB/SCHEMATICS/PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards 1.1 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 the UHF circuits only, refer to the Controller section for details of the related Controller circuits . The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components. The UHF schematics and the related PCB and parts list are shown in the tables below. Table 4-1 UHF 25-40W Diagrams and Parts Lists PCB : 8486127Z01 Main Board Top Side 8486127Z01 Main Board Bottom SidePage 4-3 Page 4-4 SCHEMATICS Power Amplifier 25 - 40W FRACN Voltage Controlled Oscillator Receiver Front End IF Page 4-5 Page 4-6 Page 4-7 Page 4-8 Page 4-9 Parts List 8486127Z01 Page 4-10
4-2Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK
UHF 25-40W PCB / Schematics / Parts List 4-3 2.0 UHF 25-40W PCB / Schematics / Parts List C0108C0211 C0212 C0251 C0252 R0103R0211 R0212 R0251 R0252 R0253 R0257 16 1 8 9 U0251 C0253C0256 C0261 C0262R0256 R0268 R0269 8 7114 U0211 C0421 C0441 C0442C0443 C0445 C0446C0447 Q0110 R0222 R0261 R0262R0442 C0104 C0106C0224 C0226 C0227C0228 C0232 C0233 C0236 C0237C0495 R0101R0102 R0104 R0108R0110 R0115 R0116R0226R0227 R0228C0221C0222 C0225 C0241 C0243 R0220R0221 R0223R0224 R0229R0254 R0255 C0235C0242 C0244 C0245C0246 C0496 D0201 R0241R0242 137 25 13U0221 R0681 C0101C0102 C0131C0132 R0105 R0106 R0114 R0131 R0132 R0170 51 32 17 4 Y0131 16 1 U01211 26 U0101 C0223 C0231C0234 C0651 C0652 D0651R0225 R0651 R065232 1 U0651 C0482 C0483 C0487C0488C0493 C0494 C0654C0681 L0481 L0482Q0681 R0682 C0486 C0655 C0542 Q0177 Q0181 Q0185 R0181 R0182 R0185 R0186 R0510 R0535 R0538 R0539 VR0501 VR0503 VR0505 VR0510 C0501C0502 C0503 C0504 C0505 C0506 C0508 C0509 C0510 C0511 C0512 C0513 C0514 C0515 C0516C0517 C0518 U027176 20 11 10 J0501R0508 R0509 J0601C0484C0601 C0603C0612 R0533 R0611 R0612 1 65 U0611C4417 C4419 C4425 C4426C4431 C4447C4453 C4454 C4457 C4461 C4462 C4481M3421 R4408 R4415 R4416R4480C4420 C4427 C4428 C4429 C4430 C4432 C4433 C4434 C4435C4440 C4441 C4446 C4458 L447432 1 4 567 8 Q4441 R4417 R4418 C4485 C4489 C4490 C4495C4497 C4602C4442 C4443C4449 C4466 C4476 C4478 C4491 C4493L4489 C4401C4403 C4404 C4407 C4410 C4418 C4488 C4505C4506 L4401 L4403Q4471 R4401R4402 R4403 R4405R4504TP4530 1 16 8 9 U4401Q4472 R4511 R4512 VR4471 C4444 C4445 C4450C4455 C4456 C4467C4477 C4487 C4521C4522 L4490 R4501 R4502U4502C4459 C4507 18 1J0451 C0448 C0449 C0470 C0471 C0472 C0473 C0474 C0476 C0477 C0478 C0490 C4472 C4474 C4475 C4480C4510 D4471D4472 L4472L4473 C4001 C4002 C4009 C4014C4026 C4027D4001 D4002 D4003L4001 L4002 L4006Q4001 Q4003R4003 R4004 R4020 R4022 C4317 C4318 C4322 C4323 C4325 C4351 C4352C4355 C4382 1 3 L4312L4313 R4302 R4311R4312 R4321 C4308C4309 C4353 C43831 3 L4303 L4304L4305 Q4301 R4301R4305R4346 C43754 3 Q4333 C4331 C4332C4335 C4337C4339 C4354C4371 C4372 C4373 C4374 L4331L4371 R4331 R4332 R4333R4337R4341R4343 R4345 SH4301 C4031C4053 C4054 C4055D4051L4008 L4053L4054 R4051 2 1 5 4 3 T40512 1 54 3 T4052C3101 2 3 4 5 FL3101 L3100 R3148 C4051C4052 L4051 R4013 R4014 R4015 C4015 C4016 C4017 C4018 C4019 C4020 C4021 C4022 C4023 C4029 C4030C4065 C4068 D4004 D4005D4006 L4003 L4004 L4005R4005 R4007 R4012 R4064 R4066 C4003 C4004 C4005 C4006 C4007C4008 6C3102 C3103 2 3 4 56 FL3102 L3101R3101 R3106 C3114 C3115C3124 C3131 C3132 C3133 C3134 C3135 C3136 C3137 C3143 L3124 R 3 111 R3117R3124 R3130 R3132 R3135 11 1 2010 U3101 R3123 C3140 C3141 C3142 87 1 14U 3 111 2C3139 R4001 C3145 C3148 4 3 FL3112 FL3114 R3142 R3144R3145 87 1 14U3115 2 Y3102 C4221 C4222 C4223 C4224 C4225 C4226 C4227 C4229 C4230 C4231C4236 C4253 D4221 L4221 Q4221 R4221 R4222R4223 R4224 R4225 R4227 C4210 C4213C4216 C4217 C4242 C4243 C4245 C4289 L4201 R4211 U4211 C4214 C4215C4244 C4246 C4232C4233 C4234 C4251 C4252 C4254C4255 R4251 R4252 23 9 1 6 5 U0641 C0107 3 2J4401 UHF (403-470 MHz) 25-40W 8486127Z01 Top Side
4-4UHF 25-40W PCB / Schematics / Parts List 4 32 Y3101 C3122 C3123 D3101 Q3102 R3113 R3114R3115R3116 R3133 C3116 R3118 C3121 L3112R3112C3104 C3110 C 3 111 C3112 C3113 L 3 111Q3101 R3102 R3104 R3105 R3107 R3108 C3144 C3146 C3147 C3151C3152 Q3141 Q3151Q3152 R3134R3141 R3146 R3147 R3151 R3152 R3153 R3154 4 3 2 FL3111 FL3113 43 2 FL3115C4261C4262 C4263D4261 R4261 TP4201TP4202 4 3 1Y4261 2 34Y4262 6 C4235 R4263L4231C4201C4202C4203 C4204 C4205 C4206 C4207 C4208 C4209 C4211 C4228 C4241 C4287 C4288D4201R4201 R4203 R4204 R4206 R4228 R4241 R4262 1 37 2513 U4201 C0422 C0423 C0426C0427 C0428C0429 C0485C0491 C0492 C0497J0401 R0407 R0409 R046712 C0430 C0431 F0401R0412 R0441 C0201C0202 C0203 C0204 C0205 C0254C0265 C0266C0267 R0201 R0202R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266R0267 R0408 TP0102 TP0221TP0222 VR0541 C0105 C0121 C0122 C0123 C0255 R0107R0468 R0543 R0555R0593 1 45 8 U0652 U0653 C4301 C4302 C4303 C4304C4305 C4306 C4307C4316 CR4301CR4302 CR4303L4301 L4302 R4303R4304 R4315 11 1 20 10U4301C4311 C4312 C4313 C4314 C4315C4319 C4321C4324 C4381 CR4311 CR4321 L4311 R4313 R4314 R4322 R4323 R4381 C4010 C4011 C4012 C4013 C4028C4061 C4062 C4064 C4067C4069 D4007Q4002Q4004 R4002 R4016 R4017 R4018R4061 R4062 R4063 R4068 R4069R4070 R4071 R4072 C4025C4024 C4060C4066 R4052 R4053 R4054R4055 R4060 C4451 C4463 C4469 C4470 C4473C4499D4452 R4455R4457 R4472 R4475 R4496TP4531 VR4473 C4494 C4498 L4491L4493 C4448C4496 L4492R4491C4452C4464 D4451D4453 R4409R4473R4474 R4506 R4507 R4471TP4532 C4492C4336 L4333 R4019 SH4302 TP4003 C4333C4334 C4338C4361 C4362 C4363 C4364C4365 L4332L4361 L4362 Q4331 Q4332 R4334R4335 R4336 R4338 R4339 R4340 R4342 R4344 R4347R4360R4361 R4362 R4363 C4422C4423 C4437C4439 L4421 L4436 L4437 L4438C4424 C4629 C4630C4631 C4632 Q4451 R4414 R4440 R4481R4485 R4486 R4487 R4488 R4489R4630 R4631 R4632 R4634 R4635S4440 TP4537 TP4538 C4421 C4436 C4438C4483 C4484 L4402 L4541L454312 3 Q4421 R4513 R4525TP4536C0499C0611 E0631 VR0601 R4495 R4497 C4402C4405 C4409 C4412C4413C4414 C4415 C4416L4404 L4411Q4473 R4412R4428 R4431 R4482 R4484 R4503 TP4533 C4502 C4503 R4422 R4423 R4424R4425R4483 R4514 R4523C4504 C4479 117 9 25 U4501 R4492C0304 C0305 C0324C0325 C0343R0323 R0324R0341 R0344R0345 TP0497 2815 C0331 C0353 C0354 C0641 C0644 C0645 C0662 C0663 C0671 Q0641Q0661 Q0662 Q0663 R0331 R0332R0333 R0335 R0481 R0482R0641R0642 R0643 R0661 R0662 R0671R0672 TP0661 U0331 C0301 C0302 C0303 C0351 C0352 D0301 14 1U0301 4 5 8 U0351C0344 R03461 45 8 U0341 C0111 C0112 C0141 C0341C0342D0101 R0342 R0343 R0347R0401 TP0101TP0104 1 4 58 U0111 161 U0141U0342 8 9R0111 R0117C0103 1 18J0552 R0112 R0113 R0121TP0103 TP0492 218 U0122 227 1 C0151 C0271C0272 C0273C0274C0554 C0593 D0151 Q0151 Q0271 R0151R0152 R0273R0274 R0275 R0276TP0151 VR0151 C0558C0559 C0560 C0591 C0592 R0591 R0592 C0575 C0576 C0275 C0276 C0277E0271 E02721 40J0551 C0621C0622 C0661 D0621 D0660 D0661 R0173 R0174 R0621VR0621 VR0671 C0541D0179 Q0171 Q0173 Q0183 R0171 R0172R0175R0176 R0177 R0178 R0179 R0183 R0184 R0511 R0512 R0525R0529 R0530 R0531R0537 R0541 R0542 TP0530 VR0504 VR0509VR0537 R0556 UHF (403-470 MHz) 25-40W 8486127Z01 Bottom Side
UHF 25-40W PCB / Schematics / Parts List4-5 PASUPVLTG_UHF_PA_1 PASUPVLTGPASUPVLTG 9V3 9V3_UHF_PA_1C4602 .033uF 3000pF C4481 C4485 30pFL4402 30pF C4484 .033uF C4421 1000pF C4495 NU NUC4490 1000pF C4497 C4489 BLM31A02PTL4474L4541NUC4493 1000pF C4478 C4436 10uF NU0.1uF C4438 17nH L4437L4421 C4423 100pF C4422NU 100pFC4439 L4438 17nHC4437 L4436 NU NU 13pF C4442C4466 30pF C4441 6.8pFC4443C4491 3.3pF C4476 NU NU C4445 6.8pF 3.3pF C4487 13pF C4444 C4467 C4440 30pFC4477 100K R4409 9V3L4490 12.77nH 12.77nHL4489 NU C4455 C4449 3.9pF NUR4471 NU C4450 3.9pF C4456 120 R4457 100pF C4459100pF C4469D4471C4492 100pF 17nH L4492 L4491 17nH 17nH L4493 10pF C4494 C4448 12pF 6.2pF C4498C4496 6.2pFR4491 11K RXIN RX_IN_VHF_PA_1 NU12pF C4474 C4480 2pF C4475 L4472 17nH D4472 NU 5.6V VR4473D4452 C4463 D4451 NU R4473 4.3KC4452 NUNU 100pF C4499R4472 100pF C4507R4506 10K 10K R4513 C4470 A+ 9.2 VDCTP4530 CLK R4504 10K Q4471 K9V1_UHF_PA_1470 R4512 K9V1 TEMPSENSE 0R4475 TEMPSENSE_UHF_PA 9V3 1 POSVOUT2 U45023 GND NU NU C4405C4402 TXINJNU L4404 3.9pF C4403 L4401 11.03nH C4404 100pF 0.1uF C4407 R4405 2004 to 6 dBmTX_INJ_UHF_PA_1 100pF C4410 100pFC4401 R4402 15 300 R4401 300 R4403 CNTLVLTGCNTLVLTG_UHF_PA_1 3.3K R4514C44180.1uF51 R4497 C4488100pF 390nHL4403 100pF C4412 390nH L4411NU NUNU NUNU C4409 0.1uF 1C4431 27pF L4543 13.85nH C4453 R4525 C4424 C4454 4.7pF R4414C4458 C4457 36pF Load POS 1Q4421 2 3 NU C4483 100pF 9V3 1 VD1 14 VG12 VG23 13 NC1 8 NC2 9 NC3 10 NC4 15RFIN 16 RFOUT16 RFOUT27 VCNTRL U4401 30C65 EP 17 G2 11 GND1 4 GND2 5 GND3 12 GND4 C4417 100pF NU NU NUC4447 C4419 C4461 C4462 39pF 100 R4415R4416 100 M3421 HEATSINK .022uFC4416 .022uF C4414 100pF C4415 100pF C4413 1.8K R4428 R4412 2K3.7 to 3.9 VDC NU NUNU Q4451 .022uF C442520K R4408 100pF C4426 R4488R4487TP4536 Load 10K R4480 PCIC_MOSBIAS_1 620 R4424620 R4423620 R4422NUR4431 R4425 620 6.2 VDC (28W) 6.5 VDC (44W) Q4473R4440 NU S4440 SWITCH 9V3 PA_PWR_SET PA_PWR_SET_1_UHF_PA_1 PA_PWR_SETNU BIAS_2_UHF_PA_1TP4537 R4630 MOSBIAS_2100pF C4632 0.1uF C4631 100K R4634 4.4 VDC (28W) 4.5 VDC (44W)TP4533NU NU C4434 3.9pFC4446 150pFR4417 C4429C4433 47pF 12pF C4420 51 R44959V3 NU NU 3.9pF C4427 C4435 12pF C4430 R4418150pF C4428 47pF C4432 51R4485 R4486 5151 R4481R4489 51 C4630 0.1uFR4635 100pF 100K C4629 47KR4631 47K R4632 MOSBIAS_3 BIAS_3_UHF_PA_1 TP4538 GND5 GND6 IN1 IN2OUT1 OUT2 Q4441 GND1 GND2 GND3 GND4 NU D4453 C4464100K R4474 R4507 10K NU2.2 VDC (28W) 3.11 VDC (44W) NU TP4531 R4455C445136pF C4472 C4510 36pF 82 R4496 C4473 100pF 51 R4511 VR4471 5.6V43.67nHL4473 Q4472 PCIC_MOSBIAS_1 CSX DATA DATA_VHF_PA_1 10K R4492 CSX_VHF_PA_1 CLK_VHF_PA_1 9V3 0.75 VDCTP4532 R4501 24 VAR3 15 VG VL 6 VLIM19 RX23 T1 2 TEMP 30V10 14 V45 16 17 V5EXT20 VAR1 18 VAR2 GND2 25 INT 422 NA Q 11 QX 10 1 RFIN RS21 31RSET CJ 5 CL 7 CLK 26 CQ 12 13 CQX DATA 28 F168 9 GND1 8 U4501 ANO 32BPOS 27 CEX 29CI 3 C4522 1000pF20K R4484 100pF C4521 6.8K 27K R4502 R4503 1K100K R4482 9V3 NU 3.1 VDC (44W) 2.2 VDC (28W) R4483 100K R4523 C4503 470pF 2200pF C4502 .01uF C4504 ALTPA_PWR_SET C4506 2200pF1uF C4505 9V3 C4479 100pF FE_CNTL_1_VHF_PA_1RESET FECTRL_1 RESET_VHF_PA_1 FE_CNTL_2_VHF_PA_1 FECTRL_2 J4401-3 3J4401-2 2J4401-1 1 A+ UHF (403-470 MHz) Power Amplifier 25-40W
4-6UHF 25-40W PCB / Schematics / Parts List NU 0 VDC (RX) NU NU 3.43 VDC 3.05 VDC (RX)NU 4.97 VDC 2.48 VDC NU NU4.58 VDC 3.79 VDC 2.48 VDC 4.97 VDC (25KHZ Chan. Spacing) 1.78 VDC (Rx) 4.97 VDC (TX) 5 VDC (Locked)10.87 VDC 1.28 VDC NUNU NU 0 VDC (Unlocked) 2.63 VDC (TX) VDC4.97 VDC NU 0 VDC (12.5KHZ Chan. Spacing) 2.52 VDC 2.5 to 11 VDC 1.76 VDC (Tx)30mV - 80mV RMS 12.7 VDC 0 VDC 4.97 VDC NU1.8pF (SOURCE) NU 3.48 6.68 VDC TP4201C4204 100pF R4204 472.2uF C4214 INPUT8 OUTPUT 1 SENSE 2 SHUTDOWN3 U4211LP2951 5V_TAP 6ERROR 5 FEEDBACK7GND 4 TRB_UHF_FN_1D4201 A16 A25 A34 1 K1 2 K2 3 K3 16.8MHz GND 2 OUT 3 4 VCC 1 VCNTL C4211 Y4262 C42280.1uF .01uFC4205 VCTRL 47 R4203C4216 5V C4224 1uF DATA C4236 .047uF VCOMOD_UHF_FN_1IN_5V_RF_REG 0.1uF C4208 C4233 2.2uF R4228 47K 10uFC4206 C4254 0.1uF VCOBIAS_2_UHF_FN_1 C4226 C4209 0.1uF 47K R4261 .01uF C4203 VCTRL_UHF_FN_1C4210 2.2uF 100 R426339K R4251 510 R4222C4201 100pF R4252 30K 16_8MHz C4232 .01uF R4224 47K C4223 R4262100pF C4245 2.2uHC4229 L4231 R4201 150 C4262CLK_UHF_FN_1 150 PRESC R4221 16_8MHz_UHF_FN_1 100pFVCOBIAS_2 VSF C4244 D4261.01uFC4231PRESC_UHF_FN_1 .018uFC4212 390nHL4201 C4242 100pF4.7uFC4253 BWSELECT_UHF_FN_1 MODIN VCOMOD.01uF C42210 C4222 0.1uFR42112.2uF C4215 C4207 12uH L4221 0.1uFC4251100pF C4241C42431000pFVSF_UHF_FN_1 C4252 .01uFC4235 LOCK2.2uF C4213 C4261MODIN_UHF_FN_1 XTAL123 24XTAL2 5V_UHF_FN_1 VBPASS 21 VCP47 15 VMULT1 VMULT2 14VMULT3 12VMULT4 11 13 VRO WARP25 PVREF 35 REFSEL 18 SFBASE 27 SFCAP 26 SFIN 30 SFOUT28 TEST1 37TEST2 38 NC1 17 NC2 29 NC3 31 PD_GND44 5 PD_VDD 32 PREINPRE_GND33 PRE_VDD 34 DGND DVDD 36 FREFOUT 19IADAPT45INDMULT16IOUT434LOCK MODIN 10 MODOUT 41 AVDD 20BIAS1 40 BIAS2 39 CCOMP 42 CEX 9 CLK 8 DATA 7 6 ADAPTSW46 AGND22 AUX1 48AUX2 1AUX3 2AUX4 3 U420163A27 R4206VDDA_UHF_FN_1 5V_UHF_FN_2 R4225 47K 100pF C4246 C4225 510pF LOCK_UHF_FN_1D4221 .01uF C4202 L4225 15nHIN_5V_RF_REG_UHF_FN_1 2.2uF C4230 100pF C4255 CSX R4223 68 CSX_UHF_FN_1 DATA_UHF_FN_1 OUT 3 IN 6VDDA Y4261 75Z0416.8MHz 1GND 4GND1 0.1uF C4263 TRBCLK R4241 220 C4234 .01uF C4227 8.2pF C4288TP4202 BWSELECTQ4221 C4287 100pF C42895V 5V 0.1uFVDDA VDDA In case Y3261 is used instead of Y3263, replacement of the following parts requires new temperature compensation of the frequency: Y3261, U3201, R3261, R3262, C3262, D3261 HF (403-470 MHz) FRACN ZWG0130521-B