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Motorola Gp328plus Gp338plus Gp338xls Detailed 6804112j28 G Manual

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    							Troubleshooting charts5B-29
    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 
    						
    							5B-30Troubleshooting 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 charts5B-31
    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)  
    						
    							5B-32Troubleshooting 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 charts5B-33
    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 
    						
    							5B-34Troubleshooting 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 
    						
    							5C-1
    Section 5C
    MODEL CHART AND TEST SPECIFICATIONS (450-527 
    MHZ)
    1.0 Model Chart
    GP Series, UHF Band 2, 450-527 MHz
    ModelDescription
    AZH38SDC9AA2GP328 Plus 450-527 MHz 4W 4 CH 
    AZH38SDC9AA3GP328 Plus 450-527 MHz 4W 16 CH 
    AZH38SDH9AA6GP338 Plus 450-527 MHz 4W 128 CH 
    AZH38SDH9DU6GP338 XLS 450-527 MHz 4W 160 CH
    ItemDescription
    XPMUE2049_GP328 Plus Super Tanapa 450-527 MHz 4W 4CH
    XPMUE1701_GP328 Plus Super Tanapa 450-527 MHz 4W 16CH
    XPMUE1702_GP338 Plus Super Tanapa 450-527 MHz 4W 128CH
    XPMUE1877_GP338 XLS Super Tanapa 450-527 MHz 4W 160CH
    XPMUE2051_GP328 Plus Tanapa 450-527 MHz 4W 4CH
    XPMUE1705_GP328 Plus Tanapa 450-527 MHz 4W 16CH
    XPMUE1706_GP338 Plus Tanapa 450-527 MHz 4W 128CH
    XPMUE1879_GP338 XLS Tanapa 450-527 MHz 4W 160CH
    XPMHE4027_GP328 Plus B/C Kit 450-527 MHz 4W 4CH
    XPMHE4004_GP328 Plus B/C Kit 450-527 MHz 4W 16CH
    XPMHE4011_GP338 Plus B/C Kit 450-527 MHz 4W 128CH
    XPMHE4021_GP338 XLS B/C Kit 450-527 MHz 4W 160CH
    XPMHE4025_GP328 Plus Front Housing Kit 4CH
    XPMHE4002_GP328 Plus Front Housing Kit 16CH
    XPMHE4003_GP338 Plus Front Housing Kit 128CH
    XPMHE4019_GP338 XLS Front Housing Kit 160CH
    XXXXNAE6483_Monopole (Whip) antenna (403-520 MHz)
    XXXXPMAE4008_Monopole (Whip) antenna (470-530 MHz)
    XXXXPMAE4006_UHF 9 cm antenna (465-495 MHz)
    XXXXPMAE4007_UHF 9 cm antenna (490-527 MHz)
    XX6804022G48GP328 Plus User Guide
    X6804112J64GP338 Plus User Guide
    X6804114J01GP338 XLS User Guide
    x = Indicates one of each is required. 
    						
    							5C-2Specifications (for GP328 Plus)
    2.0 Specifications (for GP328 
    Plus)
    General
    Transmitter
    Receiver
    All specifications are subject to change without notice.
    UHF
    Frequency:450-527 MHz
    Channel Capacity:GP328 Plus : 4/16 Chan-
    nels
    Power Supply:7.5 Volts ±20%
    Dimensions
       with Standard 
    High  Capacity 
     
    Lithium Battery:
       with Ultra High 
    Capacity Lithium 
    Battery:
    101.5mm x 55.5mm x 
    30.5mm
    101.5mm x 55.5mm x 
    35.5mm
    Weight:
       with Standard 
    High Capacity 
     
    Lithium Battery:
       with Ultra High 
    Capacity Lithium 
    Battery:
    250 g
    270 g
    Average Battery 
    Life @ (5-5-90 Duty 
    Cycle)
       Standard High 
    Capacity Lithium 
    Battery:
       Ultra High Capac-
    ity Lithium Battery:
    Low  
    Power
    >10 hrs
    >14 hrs
    High  
    Power
    >7 hrs
    >10 hrs
    Sealing:Meets MIL-STD-810-
    C,D & E and IPX4
    Shock:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    Vibration:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    Dust:Meets MIL-STD-810-
    C,D & E and IP5X
    Humidity:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    FCC IDAZ489FT4845
    UHF
    RF Output
    Li Ion @ 7.5V:
    Low
    1W
    High
    4W
    Frequency450-527 MHz
    Channel Spacing12.5/20/25 kHz
    Freq. Stability
    (-30°C to +60°C)
    0.00025%
    Spurs/Harmonics:-36 dBm < 1 GHz 
    -30 dBm > 1 GHz
    Audio Response:
    (from 6 dB/oct. Pre-
    Emphasis, 300 to 
    3000Hz)
    +1, -3 dB
    Audio Distortion:
    @ 1000 Hz, 60%
    Rated Max. Dev.
    
    						
    							Specifications (for GP338 Plus/GP338 XLS) 5C-3
    3.0 Specifications (for GP338 
    Plus/GP338 XLS)
    General
    Transmitter
    Receiver
    All specifications are subject to change without notice.
    UHF
    Frequency:450-527 MHz
    Channel Capacity:GP338 Plus 128 Chan-
    nels/GP338 XLS 160 
    Channels
    Power Supply:7.5 Volts ±20%
    Dimensions
       with Standard 
    High  Capacity 
     
    Lithium Battery:
       with Ultra High 
    Capacity Lithium 
    Battery:
    101.5mm x 55.5mm x 
    33.0mm
    101.5mm x 55.5mm x 
    38.0mm
    Weight:
       with Standard 
    High Capacity 
     
    Lithium Battery:
       with Ultra High 
    Capacity Lithium 
    Battery:
    265 g
    285 g
    Average Battery 
    Life @ (5-5-90 Duty 
    Cycle)
       Standard High 
    Capacity Lithium 
    Battery:
       Ultra High Capac-
    ity Lithium Battery:
    Low  
    Power
    >10 hrs
    >14 hrs
    High  
    Power
    >7 hrs
    >10 hrs
    Sealing:Meets MIL-STD-810-
    C,D & E and IPX4
    Shock:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    Vibration:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    Dust:Meets MIL-STD-810-
    C,D & E and IP5X
    Humidity:Meets MIL-STD-810-
    C,D & E and TIA/EIA 603
    FCC IDAZ489FT4845
    UHF
    RF Output
    Li Ion @ 7.5V:
    Low
    1W
    High
    4W
    Frequency450-527 MHz
    Channel Spacing12.5/20/25 kHz
    Freq. Stability
    (-30°C to +60°C)
    0.00025%
    Spurs/Harmonics:-36 dBm < 1 GHz 
    -30 dBm > 1 GHz
    Audio Response:
    (from 6 dB/oct. Pre-
    Emphasis, 300 to 
    3000Hz)
    +1, -3 dB
    Audio Distortion:
    @ 1000 Hz, 60%
    Rated Max. Dev.
    
    						
    							5C-4Transmitter
    4.0Transmitter
    4.1 General
    (Refer to Figure 5-1)
    The  UHF transmitter contains five basic circuits:  
    1.Power Amplifier  
    2.Antenna Switch
    3.Harmonic Filter
    4.Antenna Matching Network
    5.Power Control Integrated Circuit (PCIC).
    4.1.1 Power Amplifier
    The power amplifier consists of two devices:
    1.9Z67 LDMOS driver IC (U101) and 
    2.PRF1507 LDMOS PA (Q110).  
    The  9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.  
    This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an input 
    signal of 2mW (3dBm) (pin16).  The current drain would typically be 160mA while operating in the 
    frequency range of 450-527MHz.  
    The  PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 
    0.3W.  The current drain would typically be 1300mA while operating in the frequency range of 450-
    527MHz. The power output can be varied by changing the biasing voltage.
    Figure 5-1: Transmitter Block Diagram
    PCIC
    Antenna
    PA
    Driver
    VcontrolVcontrol
    From VCO
      Jack
    PA - F i n a l
    StageAntenna Switch/
    Harmonic Filter/
    Matching Network 
    						
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