Toshiba 42HM66 - 42" Rear Projection TV, Service Manual, Page: 2 / 64

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TABLE OF CONTENT
1. Precautions and Safety Notices.........................................................................................................3
2. Specification......................................................................................................................................4
2.1. General..............................................................................................................................4
2.2 Instrument Test...................................................................................................................5
2.3. TV
Channel Table. ............................................................................................................9
2.4. Preset Timing Chart & Reference Timing Table.............................................................12
2.5 DDC Contents.................................................................................................................14
2.6 HDMI-HDCP test............................................................................................................15
3. Front Panel Function Control Description......................................................................................16
3.1 User control.....................................................................................................................16
3.2 OSD Functions..............................................................................................................17
4. Circuit Description..........................................................................................................................29
4.1 Main Board .....................................................................................................................29
4.2 Power Supply Circuit Description ..................................................................................34
4.3 Formatter Board Circuit Description ..............................................................................35
4.4 Function Key Board Circuit Description ........................................................................36
4.5 LED Board Circuit Description ......................................................................................36
4.6 IR Board Circuit Description ..........................................................................................36
4.7 SmoothPicture
TM
Board Circuit Description ..................................................................36
5. Trouble Shooting Flow Chart..........................................................................................................37
5.1 No Display on Screen (Screen is black, no power).........................................................37
LED error message.
..............................................................................................................................37
5.2 No Sound (Test signal: 0.5Vrms sine waveform) ...........................................................38
5.3 Protection ......................................................................................................................39
6. Service adjustment ...........................................................................................................................43
6.1 Service adjustment procedure ..........................................................................................43
6.2 Service Adjustment List (in Factory Mode).....................................................................45
Appendix A: ISP......................................................................................................................................46
Appendix B: Full Set Explode Drawing .................................................................................................48
Appendix C: Disassembly.......................................................................................................................49
Appendix D: Recommended Parts List...................................................................................................62