Table Of Contents - THOMSON MT31AS Service Manual

Service manual of MT31AS
Explanation ....................................................................................................................................... 1
1. Important Information .................................................................................................................. 2
1.1. Important Safety Instructions .................................................................................................... 2
2. Product Specification .................................................................................................................... 4
2.1. Features ..................................................................................................................................... 4
2.2. USB multimedia playback format ............................................................................................... 5
2. The physical picture of 28M1300 .................................................................................................. 5
3. The Exploded view of 28M1300 .................................................................................................... 7
4. The Schematic diagram of Main board ......................................................................................... 7
5. The Test Guides Of Main Board ..................................................................................................... 7
5.1. Power Unit ................................................................................................................................. 9
5.2. Back light driver units ............................................................................................................... 10
5.3. Decode and I/O Units ............................................................................................................... 11
5.3.1. The flow of low voltage power supply .................................................................................. 11
5.3.2 Small signal process ............................................................................................................... 14
5.3.3. Control BUS ........................................................................................................................... 15
5.4. Module Circuits Test ................................................................................................................. 16
5.4.1. The audio power amplifier .................................................................................................... 16
6. Troubleshooting Flow Chart ........................................................................................................ 17
6.1. Green Power LED does not turn on. ........................................................................................ 17
6.2. Abnormal display ..................................................................................................................... 18
Attachment 1: Block diagram
Attachment 2: The Schematic diagram of Main board