Output Voltage Adjustment - Sanyo PLC-WXU700A Service Manual

Electrical Adjustments

Output Voltage adjustment

After replacing the Power Board readjust the Output
voltage adjustment as follows.
1. C onnect a digital voltmeter to pins 1 (+) and  (-)
K6A
of .
. Adjust the voltage by using VR601 as following.
AC Input
30V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
* T his adjustment is not required even if the power
board is replaced because this adjustment is carried
out before parts shipment.
1. Fan Control adjustment
1. E nter the service mode.
. C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
0
item no. " " and change data value to adjust voltage
4.5 ±0.1V
to be .
3. C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
2
no. " " and change data value to adjust voltage to be
4.5 ±0.1V
.
4. C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
4
no. " " and change data value to adjust voltage to be
4.5 ±0.1V
.
5. C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
1
no. " " and change data value to adjust voltage to be
13.5 ±0.1V
.
6. C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
3
no. " " and change data value to adjust voltage to be
13.5 ±0.1V
.
7 . C onnect a digital voltmeter to test point "
(+) and chassis ground (-). Select group no. "
5
no. " " and change data value to adjust voltage to be
13.5 ±0.1V
.
Reading
370V ±V
tPFANA
tPFANB
250
" ,item
tPFANC
250
" ,item
tPFANA
250
" ,item
tPFANB
250
" ,item
tPFANC
250
" ,item
2 .reference Voltage Adjustment
1. Enter the service mode.
. R eceive the 16-step grey scale computer signal with
Computer 2 [rGB]
3. Select group no. "
just the voltage of tP_VMIdG to be
±0.01V
.
4. Select group no. "
the voltage of tP35r to make the amplitude
d[Vpp]
" " to be
5. Select group no. "
the voltage of tP35G to make the amplitude
d[Vpp]
" " to be
6. Select group no. "
the voltage of tP35B to make the amplitude
d[Vpp]
" " to be
"
250
" ,
"
3. Panel Type Check and Setting
"
* B efore setting, you need to check which type of LCD pan-
el is placed on the projector according to the item "LCD
Panel/Prism Ass'y removal" in the chapter "Optical Parts
Disassembly".
"
1. Enter the service mode.
. Panel Type Check
Select group no. "
value as follows;
"
Data value: 0
Data value: 0 For R-Type of LCD panel
3. Panel Type Setting
Select group no. "
"
value from 10 to 0 or 0 depending on your LCD Panel
type. When the data value reaches 0 or 0, it returns to
10 quickly. The gamma-characteristics changes accord-
ing to your selection.
-9-
mode.
106 0
" , item no. " " to ad-
7.00
106 1
" , item no. " " to adjust
10.00 ±0.05V
.
106 2
" , item no. " " to adjust
10.00 ±0.05V
.
106 3
" , item no. " " to adjust
10.00 ±0.05V
.
290 0
" , item no. " " . Check the data
For L -Type of LCD Panel
290 1
" , item no. " " and change data