EFJohnson 988X SERIES manuals

127 pages13.41 Mb

SERVICE MANUAL
- 984XSERIES (UHF) 988 989XSERIES (900 MHZ)
298xx-SERIES FM TWO-WAY RADIO
- SERVICE MANUAL
  - 3TABLE OF CONTENTS
    - 1 GENERAL INFORMATION
    - 2 INSTALLATION
    - 3 CIRCUIT DESCRIPTION
  - 4TABLE OF CONTENTS (CONTD)
    - 4 SERVICING
    - 5 PARTS LIST
    - 6 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS
  - 5LIST OF TABLES
  - LIST OF FIGURES
  - 6SECTION 1 GENERAL INFORMATION
  - 7
  - - 242 - 9 8 x x -x
    - 9
  - 11UHF 984x SPECIFICATIONS
  - 12800 MHz 988x SPECIFICATIONS
  - 13900 MHz 989x SPECIFICATIONS
  - 14SECTION 2 INSTALLATION
  - 15WAR NI NG
    - 18
      - 20CAUTION
    - 23SECTION 3 CIRCUIT DESCRIPTION
      - 3-3 February 2001
      - 25Figure 3-1 Power Distribution and Switching
      - POWER DISTRIBUTION (ALL MODELS)
        Note:Arrows Indicate Signal Flow.
      - Figure 3-2 Power On-Off Control Circuit
        Interface Board (HighTier Only)
        Audio/Logic Board RF Board
      - 30Figure 3-3 Audio and Data Processing Circuitry Block Diagram
      - AUDIO/LOGIC DESCRIPTION (ALL MODELS)
        3-8 February 2001
        RECEIVEAUDIO
        TRANSMITDATA
        RECEIVE DATA
        SQUELCH TRANSMITAUDIO
      - 3.4.3 RECEIVE DATA PROCESSING
    - 33
      - Figure 3-4 RF Block Diagram (UHF Models)
      - UHF SYNTHESIZER DESCRIPTION
        3-13 February 2001
      - 35Synthesizer
      - Receiver
      - Power Amplifier
        Switching
    - 36
      - Figure 3-7 RF Block Diagram (800/900 MHz Models)
      - 800/900 MHz SYNTHESIZER DESCRIPTION
        3-23 February 2001
      - 45Synthesizer
      - Receiver
      - Power Amplifier
        Switching
    - 55SECTION 4 SERVICING
      - CAUTION
    - 60SECTION 5 PARTS LIST
      - FRONT PANEL ASSEMBLY AND MECHANICAL PARTS
        61FRONT PANEL ASSEMBLY AND MECHANICAL PARTS (CONTD)
      - 62UHF RF AND PA BOARDS
        UHF RF AND PA BOARDS
      - 77800/900 MHZ RF AND PA BOARDS
        800/900 MHz RF AND PA BOARDS
        80800/900 MHz RF AND PA BOARDS (CONTD)
      - 84AUDIO/LOGIC BOARD (ALL MODELS)
        AUDIO/LOGIC BOARD
      - 899800-SERIES RADIO MOUNTING KIT PART NO. 023-9800-030
      - 9800-SERIES REMOTE MOUNTING KIT PART NO. 023-9800-040
      - DC POWER CABLE AND HARDWARE KIT PART NO. 023-9800-410 (10 Ft) PART NO. 023-9800-422 (22 Ft)
      - ACCESSORY WIRE KIT PART NO. 023-9750-011
      - AMPLIFIED DYNAMIC MICROPHONE PART NO. 250-0740-300
      - 15 WATT, 4.7-OHM SPEAKER (BLACK) PART NO. 250-0151-010
        90FRONT PANEL EXPLODED VIEW
        91FRONT AND TOP MECHANICAL PARTS BOTTOM MECHANICAL PARTS
        5-32
        5-33
        92REMOTE CONTROL UNIT MECHANICAL PARTS
        REMOTE TRANSCEIVER MECHANICAL PARTS
      - TRANSISTOR AND DIODE BASING DIAGRAMS
    - 93SECTION 6 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS
      - TRANSISTORS Part Number Basing Diagram Identification
      - DIODES
        6-4
        PA BOARD AUDIO / LOGIC BOARDRF BOARD
        7A 8B
        P1 1
        KEYPAD
        INTERFACE BOARD
        DISPLAY DRIVER DISPLAY
        5V REGULATOR
        BACKLIGHT
        MICROCONTROLLER
        DISPLAY BOARD
        INTERCONNECT SCHEMATIC
        J3
        1 21J2
        19 20 S1
        2
        R2
        R1 J1
        135 246
        12
        INTERFACE BOARD LAYOUT
      - 96CAUTION: LTR-Net models may automatically transmit at any time (see Section 4.1).
        6-5 February 2001
        CR4
        R11
        A401
        140
        OPT SW S1
        OPT SW S5
        OPT SW S2
        A
        OPT SW S3
        OPT SW S4
        41 C
        57
        49
        48
        R15
        97DISPLAY BOARD TOP VIEW
        DISPLAY BOARD BOTTOM VIEW
        6-6 February 2001 Part No. 001-9800-001
        R17
        98RPI (P.N. 023-9800-000) BOARD LAYOUT
        A 1 2 3 4 5 6 B
        RPI (P.N. 023-9800-000) SCHEMATIC
        A 1 2 3 4 5 6 B
        Orange Black Red Green Yellow Blue Grey Brown
        PROGRAMMING CABLE (P.N. 597-2002-200)
      - A 900 C2 C 201 A4
    - 99RF BOARD COMPONENT LOCATOR GUIDE (UHF)
    - 102RF BOARD COMPONENT LOCATOR GUIDE (800/900 MHZ)
      - Comp. Location
    - 104AUDIO/LOGIC BOARD COMPONENT LOCATOR GUIDE
      - 106Comp. Location
        6-15
        EXCITER
      - 107RF BOARD SCHEMATIC (REVISED 430-470 MHZ) PA BOARD SCHEMATIC (25W, 430-470 MHZ)
        6.6
        NOTES:
        1.
        POWER CONTROL
        .1 (OFF)
        8V (RX)
        SYNTHESIZER
        RECEIVER
        0 (RX)
        6.3
        A900 VCO MODULE
        ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS ARE IN PICOFARADS UNLESS OTHERWISE SPECIFIED.
        1.1
        1.4 0 .4
        1.3
        1.7 1.0
        0.6V P-P
        6.6 (WB) 0 (NB) 0 (WB) 6.1 (NB)
        0.1V P-P WITH -30dBm
        0.3V P-P WITH -47dBm
        5.2 2.9V DC
        < 0.6V DC WITH NO RF SIGNAL
        14.850 MHz 400mV rms
        1.5-5.2V DC
        3-10 TX
        1.4-5.0 TX
        11.6 TX 13 RX
        1-5 (TX)
        12.9 0.6 (OFF)
        9.1 13.3 (OFF)
        4.3 4.0 (OFF)
        12.8 13.4 (OFF)
        13.8
        8.7
        7.9
        7.2 13.7 (OFF)
        25W POWER AMPLIFIER BOARD
        .4 TX 13.6 RX
        .7 TX
        6-16 February 2001
  - 1085 A
  - 1
    - RF BOARD LAYOUT (430-512 MHZ)
  - 2
  - 3
  - 4
  - 5
  - B C
  - CA B 1
  - 2
  - 3
  - 4
    - 6-17 February 2001
      - C119
        Q102
    - 109VCO BOARD LAYOUT (430-512 MHZ)
    - PA BOARD LAYOUT (25W, 430-512 MHZ)
      - 6-18
        .4 TX 13.6 RX
    - 110PA BOARD SCHEMATIC (40W, 430-470 MHZ)
    - 111PA BOARD LAYOUT (40W, 430-512 MHZ)
      - 6-19 February 2001
      - 6-20
        EXCITER
    - 112RF BOARD SCHEMATIC (UNREVISED 430-470 MHZ)
      - 0.5V RF
      - 5.8
      - 13
      - .4
      - NOTES:
      - 1.
      - POWER CONTROL
        8V (RX)
      - SYNTHESIZER
        400mV rms
      - RECEIVER
        0 (RX)
        6.3
      - A900 VCO MODULE
        ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS ARE IN PICOFARADS UNLESS OTHERWISE SPECIFIED.
        SUMMING AMPLIFIER
        +
        6.8 1.1 6.8
        1.4 0 .4
        6.1 5.6 1.3 6.1
        1.7 1.0
        0.6V P-P
        6.6 (WB) 0 (NB) 0 (WB) 6.1 (NB)
        0.1V P-P WITH -30dBm
        0.1V P-P WITH -47dBm
        0.3V P-P WITH -47dBm
        5.2 2.9V DC
        0.1V P-P WITH -47dBm
        < 0.6V DC WITH NO RF SIGNAL
        5.6 4.7
        1.5-5.2V DC
        2A AT MAX POWER
        3-10
        0.5-3.0 2V RF
        225mA
        3V RF 6.6
        6.6
        3-10 TX
        1.4-5.0 TX
        11.6 TX 13 RX 2-6 TX 0.3 RX
        2-6 TX 0.3 RX
        1-5 (TX)
        12.9 0.6 (OFF)
        4.7 .1 (OFF)
        9.1 13.3 (OFF)
        4.3 4.0 (OFF)
        12.8 13.4 (OFF)
        13.8
        8.7 12.9 (OFF) 7.9 12.9 (OFF)
        7.2 13.7 (OFF)
      - 25W POWER AMPLIFIER BOARD
        .4 TX 13.6 RX
        .7 TX
        SUPPLY V MINUS .24V
      - 6-21 February 2001
  - 1135 A B
  - CA
    - Go To Page 6-22
      - C575
      - C544
  - 22
  - 5
  - C
  - 44
  - 33
    - Q502
  - B 1
  - 1
    - C567
    - RF BOARD LAYOUT (UNREVISED 430-470 MHZ)
      - 6-22
        EXCITER
    - 114RF BOARD SCHEMATIC (470-512 MHZ) PA BOARD SCHEMATIC (25W, 470-512 MHZ)
      - 6.6
      - NOTES:
      - 1.
      - POWER CONTROL
        .1 (OFF)
        8V (RX)
      - SYNTHESIZER
      - RECEIVER
        0 (RX)
        6.3
      - A900 VCO MODULE
        ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS ARE IN PICOFARADS UNLESS OTHERWISE SPECIFIED.
        SUMMING AMPLIFIER
        1.1
        1.4 0 .4
        1.3
        1.7 1.0
        0.6V P-P
        6.6 (WB) 0 (NB) 0 (WB) 6.1 (NB)
        0.1V P-P WITH -30dBm
        0.3V P-P WITH -47dBm
        5.2 2.9V DC
        < 0.6V DC WITH NO RF SIGNAL
        14.850 MHz 400mV rms
        1.5-5.2V DC
        3-10 TX
        1.4-5.0 TX
        11.6 TX 13 RX
        1-5 (TX)
        12.9 0.6 (OFF)
        9.1 13.3 (OFF)
        4.3 4.0 (OFF)
        12.8 13.4 (OFF)
        13.8
        8.7
        7.9
        7.2 13.7 (OFF)
      - 25W POWER AMPLIFIER BOARD
        .4 TX 13.6 RX
        .7 TX
      - 6-23 February 2001
        C547
        C533
        C579
  - 1155 A
  - 1
    - RF BOARD LAYOUT (430-512 MHZ)
  - 2
  - 3
  - 4
  - 5
  - B C
  - CA B 1
  - 2
  - 3
  - 4
    - 6-24 February 2001
    - 116800/900 MHz RF Board Schematic
      - C119
      - PA BOARD LAYOUT (25W, 430-512 MHZ)
        Q102
      - VCO BOARD LAYOUT (430-512 MHZ)
        6-25
        .4 TX 13.6 RX
      - 117PA BOARD SCHEMATIC (40W, 470-512 MHZ)
        .7 TX 0 RX
        6-26 February 2001
      - 118PA BOARD LAYOUT (40W, 430-512 MHZ)
        Go To Page 6-27
        6-27
        EXCITER
      - 119RF BOARD SCHEMATIC (800/900 MHZ) PA BOARD SCHEMATIC (15W, 800/900 MHZ)
        NOTES:
        POWER CONTROL
        SYNTHESIZER
        RECEIVER
        A900 VCO MODULE
        1. [2] [3]
        800 MHz 12 1.8 30 3.9 11
        6.8
        100 33 24 3.6 330 12
        47 3.3 3.0
        2.7
        2.7 39nH 1 uH 3.9uH 1 uH
        180 62k 11.0k 11.0k 56 4.7k 4.7k 15k 27k
        100k
        900 MHz 10
        16 3.3 30
        .01 uF 47 36
        5.6
        3.0 1.8
        1.2 1.2
        .68 uH
        .68 uH 270 18 270 100 47k 10.0k 10.0k 120 100k
        24k 11k 47k 0
        15W POWER AMPLIFIER BOARD
        6-28 February 2001
        A900 VCO
  - 1202
  - ABC 1
    - RF BOARD LAYOUT (800 MHZ)
  - 3
  - 4
  - 5
  - A
  - B
  - 3 4 5 C
  - 1 2
    - 1212
      - 6-29 February 2001
        A900 VCO
      - RF BOARD LAYOUT (900 MHZ)
    - 3
    - 4
    - 5
    - A
    - B
    - ABC 1
    - 3 4 5 C
    - 1 2
      - 6-30 February 2001
        J601
        U600
      - 122VCO BOARD LAYOUT (800/900 MHZ)
      - PA BOARD LAYOUT (15W , 800/900 MHZ)
      - 123PA BOARD SCHEMATIC (30W, 800/900 MHZ)
        6-31
        6-32 February 2001
        J601
      - 124PA BOARD LAYOUT (30W , 800/900 MHZ)
        U600
        Q651
        6-33
        29
      - 125AUDIO/LOGIC BOARD SCHEMATIC
        26 97
        NOTES:
        TRANSMIT DATA
        RECEIVE AUDIO
        OPTION 1 OPTION 2
        18
        42
        40
        38
        37
        23
        22
        24
        52
        36
        13 14
        35
        47
        46
        28
        25
        45
        52
        44
        34
        30
        43
        41
        44
        49 42 38 48
        19
        16
        32
        13 14
        16 17 18 19 20 21 22 23
        24 25
        11
        13 14 15
        SQUELCH
        51 45 49 20 21 48 31
        50 17
        RECEIVE DATA
        POWER ON-OFF CONTROL
        TRANSMIT AUDIO
        8 2851131214 21530 40 41132 3 163313123435
        29
        1. 2. [3] [4] [5]
        27
        31
        6-34 February 2001
        U109
      - 1263
        45
        AUDIO/LOGIC BOARD LAYOUT
      - C
      - B
      - 5
      - 4
        78
        11 20 120
        20 C111 Q100
        11 20 11
        CR113
        R157
        U112
        U110
        R147
        C109
        R160
        R195
        R193 R112
        C118 CR101 U111
        14
        U104
        CR111 R151 R155 C114 U103
        U102
        CR112
        CR115
        CR122 CR116 CR128 R159 R321
        10 1
        S D
        21 30 110
        W103 W102 89
        16 14
        8
      - 3
      - 4
      - 5 A
      - A
      - B
      - C