Sanyo PLC-XTC50AL, Service Manual

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Optical Adjustment
2. Mirror adjustment
(target screen image)
White
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
A
and turn it to obtain the
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
B
and turn it to obtain the
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
A
and
B
.
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.
A B
Lamp2 Adjustment screw
Lamp1 Adjustment screw
Fig.2
A
B
Group No data Function
36 0 0 Normal mode
36 0 1 Lamp1 mode
36 0 Lamp mode