LG S75A1-D Manuals

Manuals and User Guides for LG S75A1-D. We have 1 LG S75A1-D manual available for free PDF download: Service Manual

LG S75A1-D Service Manual

LG S75A1-D Service Manual (91 pages)

SMART Hi-Fi AUDIO Wireless Multi-room Sound Bar

Brand: LG | Category: Speakers | Size: 19.82 MB

Table of Contents

Section 1 Summary

3
Section 2 Electrical

20
- One Point Repair Guide
  
  21
- Electrical Troubleshooting Guide
  
  42
  - Power / Micom / Lcd
    42
  - Wi-Fi
    43
  - Amp / Pwm
    44
  - Pairing Bluetooth
    45
  - Optical
    46
  - Portable
    47
  - Hdmi
    48
- Waveforms of Major Check Point
  
  49
  - Mpeg X-Tal
    49
  - Pwm X-Tal
    49
  - Micom (Eeprom)
    50
  - Mpeg
    50
- Wiring Diagram
  
  52
- Block Diagrams
  
  53
  - System Block Diagram
    53
  - Power Block Diagram
    54
- Circuit Diagrams
  
  55
  - Main - Micom Circuit Diagram
    55
  - Main - Mpeg Circuit Diagram
    56
  - Main - Memory Circuit Diagram
    57
  - Main - Adc & I/O Circuit Diagram
    58
  - Main - DCDC Circuit Diagram
    59
  - Amp - Pwm Circuit Diagram
    60
  - Amp - Amp Circuit Diagram
    61
  - Front Circuit Diagram
    62
  - Key Circuit Diagram
    63
- Circuit Voltage Chart
  
  64
- Printed Circuit Board Diagrams
  
  65
  - Main P. C. Board Diagram
    65
  - Amp P. C. Board Diagram
    66
  - Front P. C. Board Diagram
    66
  - Key P. C. Board Diagram
    66
Section 3 Cabinet & Main Chassis

68
- Exploded Views
  70
  - Main Set Section
    70
  - Wireless Subwoofer Section
    71
  - Packing Accessory Section
    72
Section 4 Wireless Subwoofer Part

74
- One Point Repair Guide
  
  75
  - No Power Problem (Pvdd)
    75
  - WIRELESS SUBWOOFER Troubleshooting
    75
  - Power on Error
    76
  - Wireless Connection
    78
- Waveforms of Major Check Point
  
  79
  - Voltage
    79
  - Amp Voltage
    80
  - Pwm
    81
  - Led
    82
- Wiring Diagram
  
  84
- Block Diagram
  
  85
- Circuit Diagrams
  
  86
- Printed Circuit Board Diagrams
  
  89
  - Woofer Smps P. C. Board
    89
  - Woofer Amp P. C. Board
    90
  - Woofer Key P. C. Board
    90

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