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Motorola Gp328plus Gp338plus Gp338xls Detailed 6804112j28 G Manual

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    							Circuit Board/Schematic Diagrams and Parts List5D-29
    * Motorola Depot Servicing only** Not Serviceable
    R342
    0662057N23
    100K
    R343
    0662057M26
    10
    R344
    0662057N01
    12K
    R345
    0662057M98
    10K
    R346
    0662057N17
    56K
    R347
    0662057M74
    1K
    R348
    0662057M87
    3.6K
    R349
    0662057C01
    0
    R350
    0662057N23
    100K
    R351
    0662057C01
    0
    R352
    0662057M86
    3.3K
    R355
    0662057M01
    0
    R501
    0662057M70
    680
    R502
    0662057M56
    180
    R505
    0662057M98
    10K
    R506
    0662057N15
    47K
    R509
    0662057M01
    0
    RT300
    0680590Z01
    THERMISTOR_33K
    RT400
    0680590Z01
    Thermistor 33K
    S501
    4080710Z01
    Channel Switch(Ref: 4080710Z09)
    S502
    1880619Z02
    Volume Switch
    SH100
    2680507Z01
    Harmonic Filter Shield
    SH101
    2680510Z01
    PA Shield
    SH201
    2680511Z01
    Synthesizer Top Shield
    SH202
    2680511Z01
    Synthesizer Bottom  Shield
    SH241
    2604120G01
    VCO Top Shield
    SH242
    2680514Z01
    VCO Bottom Shield
    SH301
    2680554Z01
    Rx Pre-Filter Shield
    SH302
    2680555Z01
    Rx Post-Filter
    SH303
    2680509Z01
    Mixer Shield
    SH304
    2680624Z01
    Mixer Diode Shield
    SH321
    2680508Z01
    Zif 2nd Lo Shield
    SH322
    2680514Z01
    Zif Shield
    SH323
    2604082P01
    Xtal Filter Shield
    T301
    2580541Z02
    XFMR Coil
    T302
    2580541Z02
    XFMR Coil
    U101
    5185130C65
    LDMOS Driver
    U102
    5185765B28
    Power Control IC
    U201
    5185963A27
    LV F R A C N
    U210
    5102463J61
    Inverter
    U211
    5102463J61
    Inverter
    U241
    5105750U54
    VCO Buffer
    U247
    5105739X05
    Regulator Linear
    U248
    5102463J58
    3.3V Regulator 
    U301
    5109632D83
    LV Z I F
    VR501
    4813830A18
    6.8V Zener
    Circuit  
    RefMotorola 
    Part No.Description
    VR506
    4802245J73
    6.8 V Zener
    8404101G02
    RF PCB
    8404101G03
    RF PCB
    8404101G04
    RF PCB
    8404101G06
    RF PCB
    Circuit  
    RefMotorola 
    Part No.Description 
    						
    							5D-30Circuit Board/Schematic Diagrams and Parts List
    THIS PAGE INTENTIONALLY LEFT BLANK 
    						
    							Troubleshooting charts5D-31
    9.0 Troubleshooting charts
    MCU Check
    Power Up 
    Alert Tone
     OK?
    Speaker
    OK?
    U409 EXTAL= 
    7.3728 MHz? 
    U201 Pin 19 
    16.8 MHz
    5V at U247?
    3.3V at U248?
    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 U247? 4/
    3.3V at Pin 1 
    U248Check 
    Q400
    Replace U247/
    U248
    Check any short  to 
    SWB+, 
    Vdda or Vddd
    Press PTT. Red 
    LED does not 
    light up
    PTT U409 Pin 
    53 
    low?
    Press PTT 
    Q502-2 High?
    Check 
    PB504
    Check 
    Q502-2 
    voltage
    LED 
    Q502,R501 
    OK?
    Replace 
    Faulty 
    Component
    Check 
    Accessories J403 OPT_SEL_1 
    & OPT_SEL_2 
    Pin 8 & 9 
    low?
    Radio could 
    not PTT 
    externally
    U409 
    Pin 52, 6 
    low?
    See FGU 
    Troubleshooting 
    chart
    LED should 
    light up
    Check 
    MCU PT T
    NO
    YES
    YES
    No
    No
    NO
    YESYES
    NOYESYES
    NO
    NO
    YES
    YES
    NO
    NO
    YES
    NO
    YES
    NO
    YESYESNO NO
    YES
    EXT
    SPKR EXT
    PT T INT
    AUDIO
    J403 Pin 9 low? 
    Pin 8 high?
    ASFIC U404 Pin 
    14 & 15 high?
    Check 
    Accessories
    Check 
    U404
    Check 
    U420 Audio PA
    NO
    NO YES
    YES J403 Audio 
    at Pin 2 & 
    Pin 3
    Check Spk. Flex 
    Connection
    Audio at 
    AudioPA 
    (U420) 
    input 
    (U447)
    Audio from Pin 41 
    ASFIC, U404?
    Check ASFIC 
    U404
    Check
     Audio PA 
    (U420)
    Check U301
     LV ZIFAudio at 
    Pin 2 
    U404?
    NO
    NO
    NO YESYES
    NO
    YES
    Troubleshooting Flow Chart for Controller 
    						
    							5D-32Troubleshooting charts
    Bad SINAD
    Bad 20dB Quieting
    No Recovered AudioSTART
    Audio at pin 27 
    of U301?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 C363
    VCO locked?BYe s
    16.8 MHz 
    check at pin 22 
    U301?
    Activity on 
    U301 sel pin?
    Check FGU
    No
    No
    A
    A
    Ye sCheck Q320  bias cir-
    cuitry for faults.
    Rotate Freq. Knob
    Check controller.
    Before replacing U301, check 2nd VCO 
    Q320. Check VCO O/P level, C351, 
    C352. 
    Ye s
    No
    Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) 
    						
    							Troubleshooting charts5D-33
    IF Signal at 
    L311?
    No
    RF Signal at 
    T301?
    RF Signal at 
    C310?
    No
    RF Signal at 
    C307?
    No
    RF Signal at 
    C301?
    No or 
    Check harmonic filters L101 & L102 and ant. 
    switches CR101, CR102, L104
    Check filter between C301 
    & C307; program filter to 
    schematic test freq and 
    check varactor voltages.
    Inject RF into J101
    Are varactor 
    voltages OK?
    No
    Ye s
    Check RF amp (Q301) 
    Stage.
    Check filter between 
    C310 & T301.
    Ye s
    Check T301, T302, 
    CR306, R308, R309, 
    R310
    Ye s
    1st LO O/P 
    OK?
    Locked?Ye s
    Check FGU
    Ye s
    Trace IF signal 
    from L311 to 
    Q302. Check for 
    bad XTAL filter.
    No
    Ye sQ302 collector 
    OK?
    IF signal 
    present?
    Before replacing 
    U301, check 
    U301 voltages; 
    trace IF signal 
    path.
    Ye s
    Check for 2.6 
    VDC
    Is R5 present?
    Check Q210, U201 
    (pin 48) voltages and 
    U247
    No
    No
    No
    Check U404 voltage. U404 
    can be selected by MCU 
    before replacing U404.
    Check varactor filter.
    NoYe s
    Ye s
    Ye s
    A
    A
    B
    weak RF
    Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)  
    						
    							5D-34Troubleshooting charts
    START
    No Power
    Is There B+ 
    Bias for Ant 
    switchCheck Q111
    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 U101 at Cap 
    C160
    Is Power 
    OK?
    Replace U101
    Is Power 
    OK?
    Replace Q101
    Done
    Done
    No
    Ye s
    Ye sNo
    No
    Ye sLow
    High
    No
    Ye s
    Ye s
    No
    Ye s
    No
    Troubleshooting Flow Chart for Transmitter 
    						
    							Troubleshooting charts5D-35
    5V
     at pin 6 of 
    CR201
    Is information
    from µP U409
    correct?
    Is U201 Pin 18 
    AT 4.54 VDC?
    Is U201 Pin 47 
    AT = 13 VDC
    Is U241 Pin 19
    4.3 VDC in TX?
    Start
    Vis u a l 
    check of the 
    Board OK?Correct
    Problem
    Check 5V 
    Regulator
    +5V at U201
    Pin’s
    13 & 30?
    Is 16.8MHz
    Signal at
    U201 Pin 19?
    Check FL201, C206, 
    C207, C208, CR203 & 
    R204
    Are signals
    at Pin’s 14 &
    15 of U201?
    Check 
    L202Check Q260, 
    Q261 & R260
    U201 pin 2 at 
    >3V in Tx and 
    -30 dBm?
    Are R231,R232,
    R233,C231,C232,
    & C233 OK?
    Replace U201
    If L261, C263 & C264
    are OK, then see VCO
    troubleshooting chart
    Are Waveforms
    at Pins 14 & 15
    triangular?
    Do Pins 7,8 & 9
    of U201 toggle
    when channel is
    changed?
    Check programming
    lines between U409
    and U201 Pins 7,8 & 9
    Replace U201
    Check uP U409
    Troubleshooting
    Chart
    NO
    YES
    NO
    YES
    NO
    YES
    NO
    YESNO
    NO
    NO
    YES
    YESNOYES YESNO
    YES YES YES
    NONO
    NO
    NO
    YES
    NO
    YES YESCheck CR201, U210, 
    U211, C258, C259 & 
    C228
    3.3V at U201 
    pins 5, 20, 34 & 
    36Check U248, 
    L201 & L202
    Is 
    16.8MHz 
    signal at 
    U201 pin 
    23?
    Replace 
    U201
    YES
    NO NO
    YES
    NO YES
    Troubleshooting Flow Chart for Synthesizer 
    						
    							5D-36Troubleshooting charts
    START
    No LO?
    Tx Carrier?
    VCO OK
    Check 
    R260
    TRB = 5V?Pin 10 
    >1V?
    L253 O/C?Change 
    L253
    Change 
    U241
    AUX 3 
    High?
    Check U201 
    Pin 2 for 3.2V
    Pin 19 =0V
    AUX 4 
    High?
    Change 
    Q261
    V ctrl 0V 
    or 13V?
    L243 Open 
    Circuit?
    Change 
    U241
    Change 
    L243
    Change 
    U201
    Check for faulty parts or dry 
    joints of L271, L273, C370, 
    C386, R339 & L320 A
    A
    No
    No Ye s
    Ye s Ye s
    No
    NoYe sYe s
    Ye s
    No
    Ye sNoNoYe sYe s
    No
    No
    Check R245 for dry 
    joint or faulty
    No
    Troubleshooting Flow Chart for VCO 
    						
    							6-1
    Section 6
    FLEX LAYOUT/SCHEMATIC DIAGRAMS AND PARTS 
    LISTS
    1.0 RF-Controller Interconnect Flex
    1.1 Rev A
    1.2 Rev B 
    98C
    J200
    40J400
    40
    Front Metal
    View From Top Side
    98C
    J200
    40J400
    40
    Front Metal
    View From Top Side 
    						
    							6-2 Schematic for RF-Controller Interconnect Flex
    2.0 Schematic for RF-Controller Interconnect Flex
    CONTROLLER
    J400
    EXT_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 (CLK)
    VS_RAC
    Gnd1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    RF BOARD
    J200
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40EXT_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 (CLK)
    VS_RAC
    Gnd 
    						
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