Hisense MTK8222 - Table of Contents

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LCD TV Service Manual

Hisense Confidential

Contents

Contents.......................................................................................................................................................................- 2 -

Service Manual ...........................................................................................................................................................- 3 -

1. Precautions and notices.....................................................................................................................................- 3 -

1.1 Warning...................................................................................................................................................- 4 -

1.2 Notes.......................................................................................................................................................- 7 -

2. Factory/Service OSD Menu and Adjustment..................................................................................................- 10 -

2.1 To enter the Factory OSD Menu...........................................................................................................- 10 -

2.2 Factory OSD Menu...............................................................................................................................- 10 -

3 Software Upgrading........................................................................................................................................- 14 -

3.1 Before upgrading, read the following...................................................................................................- 14 -

3.2 Get ready for upgrading........................................................................................................................- 14 -

3.3 Upgrading with the MtkTool ................................................................................................................- 16 -

3.4 Update with USB directly.....................................................................................................................- 21 -

4. Circuit instruction...........................................................................................................................................- 23 -

4.1 Power assign and block diagram ..........................................................................................................- 23 -

4.2 Image and signal process......................................................................................................................- 25 -

4.3 The main IC description .......................................................................................................................- 29 -

4.4 Troubleshooting....................................................................................................................................- 54 -

4.4.1 Troubleshooting for Remote Control.........................................................................................- 54 -

4.4.2 Troubleshooting for Function Key.............................................................................................- 55 -

4.4.3 TV won’t Power On...................................................................................................................- 56 -

4.4.4 Troubleshooting for Audio.........................................................................................................- 57 -

4.4.5 Troubleshooting for TV/VGA/HDMI input...............................................................................- 58 -

4.4.6 Troubleshooting for YPbPr input...............................................................................................- 59 -

4.4.7 Troubleshooting for Video/S-Video input..................................................................................- 60 -

5. Explode View..................................................................................................................................................- 61 -

6. Schematic circuit diagram ..............................................................................................................................- 61 -

Hisense MTK8222 - Table of Contents

Table of Contents

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