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Motorola Gp328plus Gp338plus Gp338xls Detailed 6804112j28 G Manual
Motorola Gp328plus Gp338plus Gp338xls Detailed 6804112j28 G Manual
Here you can view all the pages of manual Motorola Gp328plus Gp338plus Gp338xls Detailed 6804112j28 G Manual. The Motorola manuals for Portable Radio are available online for free. You can easily download all the documents as PDF.
Page 81
Circuit Board/Schematic Diagrams and Parts List5A-25 ZMY0130791-O 100 R3802 R5_1_VCOR5 R3806 22 10 R3808 1000pFC3803 0.1uF C3804 RX_INJ_1_VCO R3805 24K 100nHL3801 Q3801 R3801 NUNU R3807 220 R3803 C3802 NU RX_INJ 4.7pF C3801C3810 NU 10KR3804L3811 100nHC3812 0.1uF C3811 0.1uF 100nH L3812100 R3811 100pF C3806 C3805 4.7pF 15pF C3808Vdda_3_VCO R3817 0L3813 1uH VSF VSF_1_VCO Vdda R3818 NUC3813 .01uF C3818 022uF VCC_BUFFERS 14 VCC_LOGIC 18 RX_SWITCH 7SUPER_FLTR3 19 TRB_IN TX_BASE16 TX_EMITTER15 TX_IADJ1 TX_OUT...
Page 82
5A-26Circuit Board/Schematic Diagrams and Parts List ZMY0130790-O DATA_2_PA CLK_2_PA R3561 12K UNSW_LPLUS_3_PA CSX_2_PA UNSWB_LPLUS_2_PA UNSWB+ UNSWB+ RESET UNSWB+ CSX DATA CLK 5V UNSWB+ C3570 330pFRESET_1_PA 5V_2_PA BIAS_TUNING 470pF C3571 MMBT3906Q3561 R3570 10K R3569 5.6K 17 V5EXT20 VAR1 18 VAR224 VAR3VG 15 VL 6 VLIM19 QX 1 RFIN RS21 31RSET RX23 T1 2 TEMP 30V10 14 V45 16 CQX DATA 28 F168 9 8 GND1 25GND2 INT 422 NA Q 11 10 27BPOS CEX 29 3 CI CJ 5 CL 7 CLK 26 CQ 12 13 U3502 H99S-4 ANO 32C3560 1uF...
Page 83
Circuit Board/Schematic Diagrams and Parts List5A-27VHF Radio Parts List (RF Board)Circuit Ref Motorola Part No. Description B501 0986237A02 Battery Contact Module B501 0986237A02 Battery Contact Connector B503 3980502Z01 Contact, Backup B+(not used in GP328 Plus) B504 3980501Z01 Contact, Backup B-(not used in GP328 Plus) C3200 2113743N31 16.0 pF, 5% C3201 NOT PLACED C3202 NOT PLACED C3203 2113743N50 100 pF, 5% C3204 2113743L41 10000 pF, 10% C3205 2113928N01 0.1 uF, 10% C3206 2113743L41 10000 pF, 10%...
Page 84
5A-28Circuit Board/Schematic Diagrams and Parts ListC3818 2113743E07 0.022 uF C3821 2113743L41 10000 pF, 10% C3822 2113743L17 1000 pF, 10% C3823 2113743L41 10000 pF, 10% C3824 2113743N44 56.0 pF, 5% C3825 2113743N30 15.0 pF, 5% C3826 2113743N18 4.7 pF, 0.25 pF C3827 2113743E07 0.022 uF C3828 2185895Z01 0.01 uF C3829 2185895Z01 0.01 uF C3830 2113743N46 68.0 pF, 5% C3832 2113743L17 1000 pF, 10% C3833 2113743N18 4.7 pF, 0.25 pF C3834 2113743N44 56.0 pF, 5% C3835 2113743N22 6.8 pF, 0.5 pF C3836...
Page 85
Circuit Board/Schematic Diagrams and Parts List5A-29 * Motorola Depot Servicing only** Not Serviceable R3506 0662057B62 3.9, 5% R3507 0662057B62 3.9, 5% R3512 NOT PLACED R3513 NOT PLACED R3519 0680539Z01 Power Metal Strip Resistor R3541 0662057N13 39 k, 5% R3542 0662057M92 5600, 5% R3543 0662057M50 100, 5% R3544 0662057A25 100, 5% R3545 0662057A25 100, 5% R3546 0662057N01 12 k, 5% R3547 0662057N11 33 k, 5% R3548 0662057N07 22 k, 5% R3551 0662057M40 39, 5% R3561 0662057N01 12 k, 5% R3562 0662057N11 33 k,...
Page 86
5A-30Circuit Board/Schematic Diagrams and Parts List THIS PAGE INTENTIONALLY LEFT BLANK
Page 87
Troubleshooting Charts5A-31 9.0 Troubleshooting Charts MCU Check Power Up Alert Tone OK? Speaker OK? U409 EXTAL= 7.3728 MHz? U3701 Pin 19 16.8 MHz 5V at U3711? 3.3V at U3201? U409 Reset Pin 94 High? MCU is OK Not able to pro- gram RF Board ICsBefore replacing MCU, check SPI clock, SPI data, and RF IC select Replace Speaker Read Radio OK? Check Setup Reprogram the correct data. See FGU Troubleshooting 7.5V at Pin 3/5 U3711? 7.5V at Pin 1 U3201Check Q400 Replace U3711/ U3201 Check any...
Page 88
5A-32Troubleshooting Charts Bad SINAD Bad 20dB Quieting No Recovered AudioSTART Audio at pin 27 of U3220?Check ControllerYe s No Spray of inject 1st IF into XTAL Filter IF Freq: 45.1MHz Audio heard?BYe s No Check 2nd LO Control Voltage at C3279 VCO locked?BYe s 16.8 MHz check at pin 21 U3220? Activity on U3220 sel pin? Check FGU No No A A Ye sCheck Q3270 bias cir- cuitry for faults. Rotate Freq. Knob Check controller. Before replacing U3220, check 2nd VCO Q3270. Check VCO O/P level, C3272, C3273....
Page 89
Troubleshooting Charts5A-33 IF Signal at C3200? No RF Signal at T3301? RF Signal at R3313? No RF Signal at C3306? No RF Signal at C3302? No or Check harmonic filter L3531 & L3532, C3532 and ant. switches D3521, D3551, L3551, R3551, C3551, C3552, L3552 Check filter between C3302 & C3306; program filter to schematic test freq and check varactor voltages. Inject RF into J3501 Are varactor voltages OK? No Ye s Check RF amp (Q3302) Stage. Check filter between C3313 & T3301. Ye s Check T3301,...
Page 90
5A-34Troubleshooting Charts START No Power Is There B+ Bias for Ant switchCheck Q3561 Is Current OK?Is Control Voltage High or LowCheck PCIC 1. Check Pin Diodes 2. Check Harmonic Filter Inspect/Repair Tx. Out- put Network Is Power OK? Done Check Drive to Module Is Drive OK? Troubleshoot VCO Inspect PA Network/Check Power Out of U3501 at Cap C3512 Is Power OK? Replace U3501 Is Power OK? Replace Q3501 Done Done No Ye s Ye sNo No Ye sLow High No Ye s Ye s No Ye s No Troubleshooting Flow Chart...