LG NP7550B0 Manuals

Manuals and User Guides for LG NP7550B0. We have 1 LG NP7550B0 manual available for free PDF download: Service Manual

LG NP7550B0 Service Manual

LG NP7550B0 Service Manual (55 pages)

Portable Bluetooth Speaker

Brand: LG | Category: Speakers | Size: 15.5 MB

Table of Contents

Section 1 General

3
- Table of Contents
  3
- Esd Precautions
  4
- Hidden Key Mode
  5
- Program Update Guide
  6
- Service Information for Eeprom
  10
- Mcs / Eq Program Usb Update
  11
- Program Upgrade Using Download Jig
  12
- Specifications
  16
Section 2 Cabinet & Main Chassis

18
- Disassembly Instructions
  
  19
- Assembly Instructions
  
  27
  - How to Assemble the Grille
    27
- Exploded Views
  
  32
  - Packing Accessory Section
    33
Section 3 Electrical

34
- One Point Repair Guide
  
  35
  - Power Problem
    35
  - Sound in Portable Mode
    36
  - Sound in Bluetooth Mode
    37
  - Charging Battery
    38
- Electrical Troubleshooting Guide
  
  40
  - Power/Dsp/Amp
    40
  - Charging Battery
    41
  - Amp
    42
  - Pairing Bluetooth
    43
  - Key/ Led
    43
- Waveforms of Major Check Point
  
  44
  - Dsp
    44
- Wiring Diagram
  
  46
- Block Diagrams
  
  47
  - System Block Diagram
    47
  - Power Block Diagram
    48
- Circuit Diagrams
  
  49
- Circuit Voltage Chart
  
  52
- Printed Circuit Board Diagrams
  
  53
  - Main P. C. Board
    53
  - Jack P. C. Board
    54

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