Circuit Adjustments - Sanyo PLC-XU40 Service Manual

Electrical Adjustments
●

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 per-
formance and product safety.
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray
Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray
Component Video signal ...... 0.7Vp-p/75Ω terminated, 16 steps gray
● Picture control mode .............. "STANDARD" mode unless otherwise
Note:
* Please refer to "Service Adjustment Menu Operation" for entering the service mode and adjusting the service
data.
Output Voltage 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
K6D
.
2. Adjust the voltage by using
AC Input
230V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
* This adjustment is not required even if the power
board is replaced because this adjustment is carried
out before parts shipment.
scale (Composite video signal)
scale pattern (XGA)
scale (Component video signal with
480p or 1080i format)
noted.
VR611
as following.
Reading
370V ±2V
16 steps gray scale pattern
White 100%
z
Fan Voltage adjustment
1. Set the lamp mode to "ECO" with the menu function.
2. Enter the service mode and select item no. "
1
data value to " ".
3. Connect a digital voltmeter to test point "
(+) and chassis ground (-). Select item no. "
adjust the voltage to be
the Data value.
4. Connect a digital voltmeter to test point "
(+) and chassis ground (-). Select item no. "
adjust the voltage to be
the Data value.
74
5. Select item no. " " and set data value to "
6. Connect a digital voltmeter to test point "
(+) and chassis ground (-). Select item no. "
adjust the voltage to be
the Data value.
7. Connect a digital voltmeter to test point "
(+) and chassis ground (-). Select item no. "
adjust the voltage to be
the Data value.
74
8. Select item no. " " and set Data value to "
set the lamp mode to "Normal" with the menu func-
tion.
-26-
Black 100%
74
". Set
TP12V1
75
" and
8.0
±0.1Vdc by changing
TP12V2
76
" and
9.0
±0.1Vdc by changing
3
".
TP12V1
77
" and
13.5
±0.1Vdc by changing
TP12V2
78
" and
13.5
±0.1Vdc by changing
0
", and
"
"
"
"