2.4 Pedestal Adjustment [Component]
1. Receive the 16-step gray scale 1080i component video signal with
Computer1
[Component]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPVIDEOG
” (+) and chassis ground (–).
4. Select item no. “
203
” and change data value to adjust the pedestal level and black
level to be the same level.
5. Connect an oscilloscope to test point “
TPVIDEOR
” (+) and chassis ground (–).
6. Select item no. “
204
” and change data value to adjust the pedestal level and black
level to be the same level.
7. Connect an oscilloscope to test point “
TPVIDEOB
” (+) and chassis ground (–).
8. Select item no. “
205
” and change data value to adjust the pedestal level and black
level to be the same level.
Fig. 3-4
2.5 Gain Adjustment [PC]
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. “
7
” and adjust the amplitude “a” to be minimum by changing the Data
value.
5. Connect an oscilloscope to test point “
TPVIDEOR
” (+) and chassis ground (–).
6. Select item no. “
8
” and adjust the amplitude “a” to be minimum by changing the Data
value.
7. Connect an oscilloscope to test point “
TPVIDEOB
” (+) and chassis ground (–).
8. Select item no. “
9
” and adjust the amplitude “a” to be minimum by changing the Data
value.
Fig. 3-5
(a)
White Level
P
edestal Lebel
Blac
k Lebel
Part 3: Adjustment
3-10
Содержание LV-X4U
Страница 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 26: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 62: ...Part 4 Troubleshooting ...
Страница 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Страница 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Страница 82: ...Part 4 Troubleshooting 4 20 L3E07070 Signal Processor for TFT LCD IC401 NJW1141 Audio Selector IC5001 ...
Страница 83: ...Part 4 Troubleshooting 4 21 STR Z2156A Power Switching Control IC631 PW168A Scaler Main CPU IC301 ...
Страница 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Страница 85: ...Part 5 Parts Catalog ...
Страница 86: ......
Страница 94: ......
Страница 96: ...V 1 U 2 U 1 V 2 Z 1 Z 2 X Y W Accessories Page 5 CANON LV X4J LV X4U LV X4E REF NO D78 5531 D78 5532 D78 5533 ...
Страница 100: ...Part 6 Electrical Diagrams ...