Daewoo LA37L1B1LM User Manual

Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center.
Service Manual
LCD TV
CHASSIS :
Model :
S/M NO. : TSLS00AEF0
LA32L1B1LM
LA37L1B1LM
LA42L1B1LM
LA42L1B1LF
Sep. 2008
SL-S00A/01A/10A

Daewoo LA37L1B1LM Specifications

General

Display Type	LCD
Resolution	1366 x 768
Aspect Ratio	16:9
Brightness	500 cd/m²
HDMI Ports	2
USB Ports	1
Sound Output	10W x 2
Screen Size	37 inches
Viewing Angle	178° (H/V)
Input Ports	Component, Composite, VGA

Summary

1. Safety Precautions

1.1 Moving and Handling Precautions

1.2 Electrical Safety Procedures

Instructions to turn off power before opening or checking the set to prevent electric shock.

2. Preliminary Troubleshooting

2.1 No Response / Remote Issues

2.2 Sound Issues

2.3 Program Signal Issues

2.4 HDMI Sound Issues

4. Service Remote Controller

4.1 Key Arrangement

Diagram showing the layout and function of buttons on the service remote control.

4.2 Service Mode Data

Table detailing service mode menus, sub-menus, and functions accessible via the remote.

5. Block Diagrams

5.1 Digital Board Block Diagram

5.2 Power Tree Diagram

6. Hardware Troubleshooting

6.1 No Picture & No Sound

Flowchart for diagnosing and resolving issues with no picture or sound across all modes.

6.2 No Picture - Analog & Component

Troubleshooting flowchart and signal path checks for no picture in analog/component modes.

6.3 Waveform Analysis for Signal Issues

Using oscilloscope to check signal integrity for RF, AV, Y/C, and Component inputs.

6.4 No Picture - Digital TV Mode

Troubleshooting flowchart for diagnosing no picture in digital TV mode.

6.5 No Picture - PC & HDMI Mode

Troubleshooting flowchart for diagnosing no picture in PC and HDMI modes.

6.6 No Sound Troubleshooting

Flowchart for diagnosing and resolving no sound issues, checking audio paths and components.

6.7 LCD Panel Backlight Inverter Check

7. Schematic Diagrams

7.1 Circuit Schematics

8. Software Upgrade Method