Motorola Gp328 Gp338 Detailed 6804110j64 F Manual
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Troubleshooting charts6E-258.0 Troubleshooting chartsMCU CheckPower Up Alert Tone OK? Speaker OK? U409 EXTAL= 7.3728 MHz? U205 Pin 19 17.0MHz 5V at U204? 3.3V at U400? U409 Reset Pin 94 High?MCU is OKNot able to pro- gram RF Board ICsBefore replacing MCU, check SPI clock, SPI data, and RF IC selectReplace Speaker Read Radio OK?Check SetupReprogram the correct data.See FGU Troubleshooting7.5V at Pin 5 U204? 7.5V at Pin 8 U400Check Q400Replace U204/U400Check any short to SWB+, Vdda or VdddPress PTT. Red...
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6E-26Troubleshooting chartsBad SINAD Bad 20dB Quieting No Recovered AudioSTARTAudio at pin 27 of U303?Check ControllerYe sNoSpray of inject 1st IF into XTAL Filter IF Freq: 109.65 MHzAudio heard?BYe sNo Check 2nd LO Control Voltage at C308VCO locked?BYe s17.0 MHz check at pin 22 U303?Activity on U303 sel pin?Check FGUNo NoAA Ye sCheck Q301 bias circuitry for faults.Rotate Freq. KnobCheck controller.Before replacing U303, check 2nd VCO Q301. Check VCO O/P level, C315, C316.Ye sNoTroubleshooting Flow Chart...
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Troubleshooting charts6E-27IF Signal at L301?No RF Signal at T501?RF Signal at collector Q509?NoRF Signal at C504?NoRF Signal at C147?No orCheck transmit harmonic filter, antenna switch and J101Check filter between C147 & C504Inject RF into J101NoYe sCheck RF amp (Q509) Stage.Check filter between Q509& T301.Ye sCheck T501, T502, D501, R507, R508, R509,C516,L508Ye s1st LO O/P 310OK? Locked?Ye sCheck FGUYe sTrace IF signal from L301 to U301. Check for badXTALfilter.NoYe sU301 drain OK? IF signal...
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6E-28Troubleshooting chartsSTARTNo PowerIs Current ~2A?Is control voltage at U101 Pin 1 > 5Check PCIC1. Check Pin Diodes 2. Check Harmonic Filter 3. Check PA BiasInspect/Repair Tx. Output NetworkIs Power OK?DoneCheck input to U101, Pin 16Is voltage >1Vpp?Troubleshoot VCOCheck level U101, Pin 6Is level >5 Vpp?Is Power OK?Replace Q101Ye sNo No Ye sNo Ye s No Ye sYe sNo Ye s NoTroubleshooting Flow Chart for TransmitterCheck components around U101Is Power OK?DoneReplace U101NoCheck components around Q100Ye...
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Troubleshooting charts6E-29Is information frommPU409 correct?Is U205 Pin 18Is U205 Pin 47In receive, is Pin1 3 Vplus in transmit is Pin1>3VandPin2< .7 V?Sta rtVi s ua l check of the Board OK?Correct ProblemCheck 5V Regulator+5V at U205 Pin’s 13 & 30?Is 17.0 MHz Signal at U205 Pin 19?Check Y201,CR211, C236,C237,C242, R219Signal at Pin 16 of U205?Replace U205Replace or resolder necessary componentsIs RF level at U205 Pin 32 >-30 dBm?Are loop filter parts R224,R225,R227,R 228,R229,C256,C2 57,C259 and...
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6E-30Troubleshooting chartsLevel > +2 dBmCheck signal at collector of Q201 NoYe sCheck L204, L211, L212, L215, C221, C228, C229, C230,C231, C235,C297, R204, R234, R238Troubleshooting Flow Chart for VCOCheck signal at collector of Q201No RX LO or No signal at U205 Pin 32 in RXNo TX LO or No signal at U205 Pin 32 in TXLevel > +10 dBm?Check signal at drain of Q203Level > -3 dBm?Check signal at drain of Q202 and Q204Level > +7 dBm?No Ye sReplace Q201Ye sYe sDoneCheck DC volt- age across R203Problem...
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7-1Section 7 FLEX LAYOUT/SCHEMATIC DIAGRAMS AND PARTS LISTS1.0 Keypad-Controller Interconnect Flex 2.0 Schematic for Keypad-Controller Interconnect Flex98CJ200 40J100 40Front Metal View From Top SideKEYPAD J100EXT_MIC VS_CS SW_B+ Vddd VS_AUDSEL Det_Aud_Snd Rx_Aud_Rtn Tx_Aud_Snd Tx_Aud_Rtn Flat_Tx_Rtn Opt_Bd_En Rdy/Req Rx_Aud_Snd ON INT_EXT_Vdd Key_Row Key_Col PTT KEY_INT VS_INT RESET LED_EN OFF_BATT_DATA_OUT VS_GAINSEL SrD_Rtn (MISO) SrD_Snd (DATA) R_W LCD_SEL DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A0 SCK_Snd...
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7-2 Parts List for Keypad-Controller Interconnect Flex3.0 Parts List for Keypad-Controller Interconnect Flex 4.0 Universal Connector FlexReference SymbolMotorola Part No.DescriptionJ1000980521Z01Connector, 40 pin J200 0905505Y04 Speaker, 20 ohmBack Metal View From Top Sidec 98 8480549Z03 rev BC402M40020 J403J404 J405 J406 J407 J408 J409 J410 J411 J412 J413 J414 J415 J416 M401Front Metal View From Top Side
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Schematic for Universal Connector Flex7-35.0 Schematic for Universal Connector Flex 6.0 Parts List for Universal Connector FlexReference SymbolMotorola Part No.DescriptionC4022113740A55Cap, 100pF M400 5085962A02 Speaker, 20 ohmM4015013920A04Mic, Mini electrec13 PIN UNIVERSAL CONN EXT_SPKR+ EXT_SPK- OPT_B+ EXT_MIC OPT_SEL_2 OPT_SEL_1 GND RX_DATA TX_DATAJ404 J405 J406 J407 J408 J409 J410 J411 J412SPKR_20 SPKR_20 OPT_B+30 RSSI RX_AUDIO/TX_AUDIO BOOT_CTRL NCJ413 J414 J415 J416 1 2 C402 100pF M401GND...
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7-4Parts List for Universal Connector Flex