![background image](http://html.mh-extra.com/html/canon/d78-5452/d78-5452_service-manual_62457054.webp)
Part 3: Adjustment
3-11
2. CIRCUIT ADJUSTMENTS
[Adjustment conditions]
●
Input signal
Video signal ............................1.0Vp-p/75
Ω
terminated, 16 steps gray scale
(Composite video signal)
Computer signal .....................0.7Vp-p/75
Ω
terminated, 16 steps gray scale pattern
Component Video signal .........0.7Vp-p/75
Ω
terminated, 16 steps gray scale
(Component video signal with 480p, 575p, 720p or
1080i format)
●
Picture control mode
...............“STANDARD” mode unless otherwise noted.
Note:
Please refer to “Service Adjustment Menu Operation” for entering the service mode and
adjusting the service data.
2.1 Output Voltage Adjustment
After replacing the Power Board readjust the Output voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (–) of
K6D
.
2. Adjust the voltage by using
VR611
as following.
AC Input: 230V Reading: 380V ± 2V
* This adjustment is not required even if the power board is replaced because this
adjustment is carried out before parts shipment.
Fig. 3-2
The each circuit has been made by the fine adjustment at factory. Do not
attempt to adjust the following adjustments except requiring the
readjustments in servicing otherwise it may cause loss of performance
and product safety.
CAUTION
White 100%
Black 100%
16 steps gray scale pattern
Be sure to connect the lamp when taking this adjustment.
CAUTION
Содержание D78-5452
Страница 9: ...Part 1 General Information ...
Страница 25: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 66: ...Part 4 Troubleshooting ...
Страница 77: ...Part 4 Troubleshooting 4 11 4 IC BLOCK DIAGRAMS AD8075 Selector IC201 AN7513 Audio Output IC5601 ...
Страница 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Страница 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Страница 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Страница 82: ...Part 4 Troubleshooting 4 16 STR Z2156 Power Switching Control IC631 TB1274 Video Decoder IC3101 ...
Страница 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Страница 84: ...Part 5 Parts Catalog ...
Страница 85: ......
Страница 99: ...Part 6 Electrical Diagrams ...