Daewoo LA37L1B1LM, Service Manual

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Contents
1. Safety Precaution.................................................................................................................3
2. Preliminary Troubleshooting ..............................................................................................4
3. Product Specification ..........................................................................................................5
1) Standard of Product...........................................................................................................5
2) Available Input Signal ........................................................................................................6
3) Closed Caption Specification.............................................................................................7
4) V Chip(Parent Control) Specification .................................................................................8
4. Service Remote Controller ..................................................................................................9
1) Key Arrangement...............................................................................................................9
2) Service Mode Data ..........................................................................................................10
5. Block Diagram ....................................................................................................................11
1) Block Diagram of Digital Board ........................................................................................11
2) Power Tree ......................................................................................................................12
6. Hardware Trouble shooting...............................................................................................13
1) No Picture & No Sound ...................................................................................................13
2) No Picture – Analog & Component mode........................................................................14
3) No Picture – Digital TV mode ..........................................................................................19
4) No Picture – PC & HDMI mode .......................................................................................20
5) No Sound.........................................................................................................................24
6) LCD Panel Backlight Inverter Check ...............................................................................25
7. Schematic ...........................................................................................................................26
8. Soft Upgrade Method.........................................................................................................42
9. Bill Of Materials ..................................................................................................................43
1) LA32L1B1LM Parts List ...................................................................................................43
2) LA37L1B1LM Parts List ...................................................................................................43
3) LA42L1B1LM Parts List ...................................................................................................44
4) LA42L1B1LF Parts List....................................................................................................44
5) Common Parts List. .........................................................................................................45
10. Mechanical Exploded View .............................................................................................52
1) 32L1.................................................................................................................................52
2) 37L1.................................................................................................................................53
3) 42L1.................................................................................................................................54