Output Voltage Adjustment - Sanyo PLC-WXU700 Service Manual

Electrical Adjustments

Output Voltage adjustment

After replacing the Power Board readjust the Output
voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 2 (-)
K6A
of .
2. Adjust the voltage by using VR601 as following.
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.
1. Fan Control adjustment
1. Enter the service mode.
2. Connect 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. Connect 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. Connect 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. Connect 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. Connect 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 . Connect 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 ±2V
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.
2. Receive 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
"
* Before 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.
2. Panel Type Check
Select group no. "
value as follows;
"
Data value: 0
Data value: 20 For R-Type of LCD panel
3. Panel Type Setting
Select group no. "
"
value from 10 to 0 or 20 depending on your LCD Panel
type. When the data value reaches 0 or 20, it returns to
10 quickly. The gamma-characteristics changes accord-
ing to your selection.
-28-
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