2.10 Common Center Adjustment
1. Receive the 1 line black/white pattern computer signal with
Computer1 [RGB]
mode.
2. Enter the service mode.
3. Project only green light component to the screen.
4. Select item no. “
13
” and change data value to obtain the minimum flicker on the
screen.
5. Project only red light component to the screen.
6. Select item no. “
14
” and change data value to obtain the minimum flicker on the
screen.
7. Project only blue light component to the screen.
8. Select item no. “
15
” and change data value to obtain the minimum flicker on the
screen.
2.11 Gamma Adjustment
[PC-gamma adjustment]
1. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPVIDEOG
” (+) and chassis ground (–).
4. Select item no. “
16
” and change data value to adjust amplitude “a” to be
1.6
± 0.1V.
[AV-gamma adjustment]
1. Receive the 16-step grey scale video signal with
Video [Video]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPVIDEOG
” (+) and chassis ground (–).
4. Select item no. “
16
” and change data value to adjust amplitude “a” to be
1.9
± 0.1V.
Fig. 3-10
(a)
white level
white level
Part 3: Adjustment
3-13
Summary of Contents for D78-5532
Page 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 26: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 62: ...Part 4 Troubleshooting ...
Page 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Page 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Page 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Page 85: ...Part 5 Parts Catalog ...
Page 86: ......
Page 94: ......
Page 100: ...Part 6 Electrical Diagrams ...