Vivitek RP56HD21, Руководство по обслуживанию

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ii
5.5. Clean Air Filters ........................................................................................................................25
5.6. Cooling system
：
.....................................................................................................................25
5.7. Acoustic noise
：
.......................................................................................................................25
6. Safety ....................................................................................................................................................25
6.1. Interlocks ..................................................................................................................................25
6.2.
Labels.......................................................................................................................................25
II. On-Screen Display Function Control Description ..........................................................................................26
1. Functional
Requirements ......................................................................................................................26
2. OSD Flow chart .....................................................................................................................................29
III. Circuit Description..........................................................................................................................................47
1. Circuit Description .................................................................................................................................47
2. Hardware platform description ..............................................................................................................51
2.1. I/P board PCBA
（
Refer to picture 1
）
.....................................................................................51
2.2. Power supply PCBA
（
Refer to picture 2
）
............................................................................53
2.3. A/V board PCBA
（
Refer to picture 3
）
....................................................................................55
2.4. Keypad ECA & IR PCBA
（
Refer to picture 4
）
.......................................................................56
2.5. Audio board PCBA
（
Refer to picture 5
）
................................................................................56
2.6. Tuner board PCBA
（
Refer to picture 6
）
................................................................................57
IV. Troubleshooting Flow Chart...........................................................................................................................59
1. NO POWER ( POWER LED OFF) ........................................................................................................61
2. NO PROJECTION LIGHT ( NO PICTURE) ..........................................................................................62
3. OSD NOT OPERATING ........................................................................................................................63
4. VIDEO NO IMAGE( CVBS ,S-VIDEO ,Y/Cb/Cr) ...................................................................................63
5. NO AUDIO.............................................................................................................................................64
6. NO TV OR LOST SOME CHANNEL.....................................................................................................64
7. PROTECTION IMAGE IS ABNORMAL.................................................................................................65
V. PCB Layout Diagram .....................................................................................................................................66
VI. Mechanical Assembly ....................................................................................................................................67
VII. Adjustment
of Picture.....................................................................................................................................73
VIII. Recommended Spare parts list......................................................................................................................75
IX. Download
Procedure (USE RS-232) .............................................................................................................78