LG CJS87F Manuals

Manuals and User Guides for LG CJS87F. We have 1 LG CJS87F manual available for free PDF download: Service Manual

LG CJS87F Service Manual

LG CJS87F Service Manual (85 pages)

Brand: LG | Category: Stereo System | Size: 21 MB

Table of Contents

Section 1 Summary

3
- Table of Contents
  3
- Servicing Precautions
  4
- Esd Precautions
  6
- 1 Hidden Key Mode Table
  
  7
  - Hidden Key Mode
    7
- 2 Hidden Key Mode Description
  
  8
  - Service Information for Eeprom
    10
  - Program Download Guide
    11
  - Fota Update Step Using Bt App
    14
  - Specifications
    16
Section 2 Cabinet & Main Chassis

18
- Exploded Views
  
  20
  - Cabinet and Main Frame Section
    20
  - Packing Accessory Section
    22
  - Speaker Section
    23
- Disassembly Instructions
  
  24
  - Case Top
    24
  - Panel Front Assembly
    24
  - Panel PCB & Multi Knob
    25
  - Bracket Hook
    26
  - Main PCB & SMPS PCB
    27
  - Bracket Inner
    28
  - MD & Lighting PCB
    29
  - Panel Rear
    29
Section 3 Electrical

30
- One Point Repair Guide
  
  31
  - Power
    31
  - Booting When Power on the Set
    33
  - Booting in CD/Usb Function
    35
  - Operation of MD
    40
  - Sound in the Usb Function
    44
  - Audio Output Is Small or no Audio Output
    45
  - Power on (Standby Led Is Blinking)
    46
  - Speaker no Audio
    47
  - Sound
    49
  - Vfd Is Not Displayed When Power on the Set
    53
- Electrical Troubleshooting Guide
  
  54
  - Power Supply on Smps Board
    55
  - System Part
    57
  - Audio Check
    59
- Waveforms of Major Check Point
  
  63
  - Dsp (Ic501)
    63
  - Pwm (Ic600)
    64
  - Servo (Ic401)
    65
  - Motor Driver (Ic400)
    66
  - Adc
    70
- Wiring Diagram
  
  70
- Block Diagram
  
  71
- Circuit Voltage Chart
  
  72
  - Capacitor Voltage
    72
- Printed Circuit Board Diagrams
  
  73
  - Smps P.C.board Diagram
    73
  - Main P.C.board Diagram
    75
  - Front P.C.board Diagram
    77
  - Jack P.C.board Diagram
    79
Section 4 Mechanism (Dm14B)

80
- Deck Mechanism Disassembly
  
  81
  - Cover Top
    81
  - Clamp Assembly
    81
    
    Plate
    81
    
    Magnet
    81
    
    Clamp
    81
    
    Tray Disc
    82
    
    Pick up Assembly
    83
    
    Base Up/Down
    83
    
    Belt Loading
    84
    
    Gear Pulley
    84
    
    Gear Loading
    84
    
    Guide
    84
  - Deck PCB Assembly
    84
  - Motor Assembly
    84
  - FFC Cable
    84
- Deck Mechanism Exploded View (Dm14B)
  
  85

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