LG LM-U2350A User Manual

3CD CHANGER
HI-FI SYSTEM
SERVICE MANUAL
MODEL: LM-U2350A, LMS-U2350
LM-U4050A, LMS-U4050, LMS-U4050W
LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S
SERVICE MANUAL MODEL: LM-U2350A, LMS-U2350, LM-U4050A, LMS-U4050, LMS-U4050W, LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.

LG LM-U2350A Specifications

General

Brand	LG
Model	LM-U2350A
Category	Stereo System
Language	English

Summary

SECTION 1. GENERAL

SERVICING PRECAUTIONS

Important safety and handling precautions before servicing the audio system.

PICK-UP HANDLING

Precautions for handling, storing, and cleaning the CD player's pick-up assembly.

DISC PLAYER REPAIRS

General preparations and precautions for repairing CD player components.

ESD PRECAUTIONS

Guidelines to prevent damage from Electrostatic Discharge (ESD) to sensitive components.

SPECIFICATIONS

SECTION 2. ELECTRICAL SECTION

ELECTRICAL TROUBLESHOOTING GUIDE

Flowcharts and procedures for diagnosing and resolving electrical issues.

SMPS POWER CIRCUIT TROUBLESHOOTING

Troubleshooting steps for the Switched-Mode Power Supply (SMPS) circuit.

MICOM AND P-CTRL CHECKS

Procedures for checking MICOM IC and P-CTRL signals and related components.

MUTING TROUBLESHOOTING

Diagnostic steps for issues related to the muting function of the audio system.

SECTION 3. EXPLODED VIEWS

CABINET AND MAIN FRAME

Exploded view and parts list for the main cabinet and frame assembly.

TAPE DECK MECHANISMS

Exploded view and parts list for the right and left tape deck mechanisms.

CD MECHANISM

Exploded view and parts list for the CD mechanism assembly.

SECTION 4. SPEAKER SECTION

Speaker Models LMS-U2350/U4050/U5050

Exploded view and parts for the standard speaker models.

Speaker Models LMS-U5050W/U4050W

Exploded view and parts for the W model speaker systems.

Speaker Model LMS-U5050S

Exploded view and parts for the S model speaker systems.