Casio PX-780 Service Manual page 71

9-2. LCD Flicker Adjustment
No Operation
Boot the diagnostic program.
1
Tap "5.LCD"
or
push "5" key.
2
Tap "5.Adjust (VCOM)"
or
push "5" key.
3
Measure the flicker in " "
with a display tester.
Adjust the flicker with ". " key (to
increase the value).
4
or
"- " key (to decrease the value).
After completion, push ">" key.
Push "Enter" key.
5
Tap [Exit]
or
push "Enter" key.
6
Display
Display "Main Manu 1".
** LCD CHECK **
1.Fill VRAM
2.Pattern
3.Color Bar
4.Scroll
5.Adjust (VCOM)
6.Adjust (LED BL)
[Exit] or Enter Key
** Adjust LED BL **
_
LED = 85 > RIGHT Key
[Exit] or Enter Key
** Adjust LED BL **
_
LED = 85 > RIGHT Key
[Exit] or Enter Key
** LCD CHECK **
1.Fill VRAM
2.Pattern
3.Color Bar
4.Scroll
5.Adjust (VCOM)
6.Adjust (LED BL)
[Exit] or Enter Key
Back to Main Menu 1
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Inspection contents
_
_
Adjust until the display tester
shows 2 [%] or less.
Confirm the display on the left.
Confirm the display on the left.