2.11 Signal Offset Adjustment [PC]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
TP503G
" (+) and chassis ground (-).
4. Select item no. "
10
" and adjust the amplitude "a" to be
2.4
±0.1V by changing the
Data value.
Fig. 3-9
2.12 Signal Offset Adjustment [AV]
1. Receive the 16-step gray scale composite video signal with
Video [Video]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
TP503G
" (+) and chassis ground (-).
4. Select item no. "
10
" and adjust the amplitude "a" to be
2.4
±0.1V by changing the
Data value.
Fig. 3-10
2.13 White Balance Adjustment
[PC white balance adjustment]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB]
mode.
2. Enter the service mode, select item no. "
11
" (Red) or "
12
" (Blue), and change Data
values respectively to make a proper white balance.
[AV white balance adjustment]
3. Receive the 16-step gray scale composite video signal with
Video [Video]
mode.
4. Enter the service mode, select item no. "
11
" (Red) or "
12
" (Blue), and change Data
values respectively to make a proper white balance.
Confirm that the same white balance is obtained in video and computer input.
(a)
white level
white level
(a)
white level
white level
Part 3: Adjustment
3-12
Summary of Contents for D78-5382
Page 2: ...CANON Power Projector LV 5200U D78 5382 LV 5200E D78 5383 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 45: ...Part 3 Adjustment ...
Page 65: ...Part 4 Troubleshooting ...
Page 84: ...Part 4 Troubleshooting 4 19 AD9884AKS A D IC8201 AN5870SB RGB SW IC5201 ...
Page 88: ...Part 4 Troubleshooting 4 23 LA7217 Sync Separator IC5361 M62392 D A IC3561 ...
Page 89: ...Part 4 Troubleshooting 4 24 M62393 D A IC281 IC7801 NJM2284M Switch IC2101 ...
Page 91: ...Part 4 Troubleshooting 4 26 VPC3230D Video Decoder IC3101 ...
Page 92: ...Part 5 Parts Catalog ...
Page 94: ......
Page 101: ...45 45 45 45 52 52 a 52 Page 4 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Page 107: ...U 1 U 2 V 1 W X Y Z 1 Page 7 Z 2 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Page 111: ...Part 6 Electrical Diagrams ...