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LG Manuals
Stereo System
LM-U5050A
Service manual
LG LM-U5050A Service Manual
3cd changer hi-fi system
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Table Of Contents
56
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
General
Notes Regarding Handling of the Pick-Up
Repair Notes
Servicing Precautions
Clearing Malfunction
Caution. Graphic Symbols
Electrostatically Sensitive Devices (ESD)
Esd Precautions
Specifications
Electrical Troubleshooting Guide
P-Sens Part
Smps Power Circuit
Micom (Ic301) Check
P-Ctrl Check
Expend IC(Ic305/501/502) State
Muting Troubleshooting (Mute State)
Specific Function Mode Has no Sound (Njw1190) Ic601
Aux
CD
MIC
Tuner
Amp Module Troubleshooting
Ic601(Njw1190) Troubleshooting
Dubbing Check
Block Diagram
INTERNAL BLOCK DIAGRAM of Ics
Pin Configuration
Pin Description
Block Diagram
Wma_Usb Block Diagram
Front Schematic Diagram
Schematic Diagrams
Main Schematic Diagram
Deck Schematic Diagram
MIC Schematic Diagram
Usb_Aux2_H/P Schematic Diagram
Woofer Amp Schematic Diagram
Amp Schematic Diagram
Power Schematic Diagram
Sub Power Schematic Diagram
Cdp Schematic Diagram
Usb Schematic Diagram
Wiring Diagrams
Main P.C. Board
Printed Circuit Diagrams
Main Amp P.C. Board
Front P.C. Board
Cdp P.C. Board
Power P.C. Board
Sub Power P.C. Board
Woofer Amp P.C. Board
Cabinet and Main Frame Section
Exploded Views
Tape Deck Mechanism (A/R & A/S : Right A/R Deck)
Tape Deck Mechanism (A/R & A/S : Left A/R Deck)
CD Mechanism
Speaker Section
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Table of Contents
2
Specification
3
Specifications
4
Internal Block Diagram of Ics
5
Schematic Diagrams
6
Speaker Section
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3CD
CHANGER
HI-FI SYSTEM
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL.
MODEL: LM-U2350A, LMS-U2350
LM-U4050A, LMS-U4050, LMS-U4050W
LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S
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Table of Contents
Troubleshooting
Electrical troubleshooting guide
8
Muting troubleshooting (mute state)
10
Ic601(njw1190) troubleshooting
14
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