Mirror Adjustment - Sanyo PLC-XTC50AL Service Manual

Optical Adjustment

2. Mirror adjustment

1
Input the 100%-white pattern with XGA computer signal.
2
Enter the service mode. Select Group "236", No. "0".
3
Change the data value to "1". The lamp mode changes to "Lamp1" and the
mirror motor starts turning continuously.
4
Insert a hex driver into the adjustment screw
proper white uniformity between the left and right part of the screen.
5
Change the data value to "0" to stop turning the mirror motor and confirm
the white uniformity.
6
Change the data value to "2". The lamp mode changes to "Lamp" and
the mirror motor starts turning continuously.
7
Insert a hex driver into the adjustment screw
proper white uniformity between the left and right part of the screen.
8
Change the data value to "0" to stop turning the mirror motor and confirm
the white uniformity.
9
Apply the screw-glue to fix the screws
10
Confirm the data value is set to "0" and then exit from the service mode.
Note:
* Each time the lamp mode is changed, wait 90 seconds or more till the bright-
ness of lamp becomes stable, and the mirror motor turns for about 5 min-
utes continuously so this adjustment should be done within this period.
* Please refer to "Service Adjustment Menu Operation" for entering the service
mode and adjusting the service data.
Lamp1 Adjustment screw
A
A
and turn it to obtain the
B
and turn it to obtain the
A B
and .
A B
Lamp2 Adjustment screw
B
-50-
Group No data Function
36 0 0 Normal mode
36 0 1 Lamp1 mode
36 0  Lamp mode
White
(target screen image)
Fig.2