Sanyo PLC-XW10, Руководство по обслуживанию

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1. Receive the 16-step gray scale computer signal.
2. Set to COMPUTER mode.
[R-OFFSET ADJUSTMENT]
3. Connect an oscilloscope to test point “TP2211R” (+)
and chassis ground (-).
4. Enter to the service mode, select item no. “275” and
change data value to adjust the pedestal level and
black level to be same level.
[G-OFFSET ADJUSTMENT]
5. Connect an oscilloscope to test point “TP2221G” (+)
and chassis ground (-).
6. Select item no. “276” and change data value to
adjust the pedestal level and black level to be same
level.
[B-OFFSET ADJUSTMENT]
7. Connect an oscilloscope to test point “TP2231B” (+)
and chassis ground (-).
8. Select item no. “277” and change data value to
adjust the pedestal level and black level to be same
level.
Pedestal level = Black level
PC-OFFSET ADJUSTMENT
After replacing the Power Board, PF.C. Board, readjust
the Output voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of
K6C.
2. Adjust the voltage by using VR01 as following.
AC Input Reading
230V 380V ±2V
120V 372V ±2V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
OUTPUT VOLTAGE ADJUSTMENT
●
Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfor-
mance and product safety.
[Adjustment Condition]
●
Input signal
Video signal .......................... 1.0Vp-p/75
Ω
terminated, 16 steps gray scale (Composite video signal)
Component Video signal ........ 0.7Vp-p/75
Ω
terminated, 16 steps gray scale (Component video signal
with 480i, 480p, 575p, 720p, 1035i or 1080i format)
Computer signal...................... 0.7Vp-p/75
Ω
terminated, 16 steps gray scale pattern (XGA)
●
Picture control mode ...................... “NORMAL” mode unless otherwise noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the service
data.
Electrical Adjustments
1. Connect a digital voltmeter to test point “TP6602” (+)
and chassis ground (-).
2. Enter to the service mode, select item no. “29” and
set data value to “1”.
3. Adjust the voltage to be 12.1 ±0.1Vdc by using
VR6601.
4. Check that the voltages at test points “ TP6601” (+),
“TP6603” (+) and chassis ground (-) are 13.0 to
13.5Vdc.
5. Select item no. “29” and set data value to “0”.
FAN VOLTAGE ADJUSTMENT