Casio Cassiopeia E-125 Service Manual And Parts List page 53

9. Tapping 4 BackLight, for example, the following display appears.
439
Another number may appear.
10. While holding down the downward key in the cursor button, display on the screen becomes dimmer,
then lighter suddenly.
Pressing Action Control button twice, Main Menu appear.
8-4-2-7. Color Bar Check (including a display adjustment)
Refer to ADJUSTMENT in this manual concerning below VCOM adjustment.
1. Tapping 8 COLOR BAR, the following Color Bar check Menu display appears.
** COLOR BAR **
1 Contrast
2 Scroll
3 GRAY
2. Tapping 1 Contrast, the following color bar display appears.
RED
GREEN
BLUE
BLACK
WHITE
Pressing Action Control button, Color Bar check Menu display appears again.
Even if tapping 2 Scroll, this unnecessary check can not be performed because this check
becomes unnecessary.
3. Tapping 3 GRAY, all gray display appears on the screen.
If abnormal displays (flicker, and so on) are
detected, change VCOM voltage rotating the
variable resistor VR300. Refer to page 70 in the
Service Manual for E-115 concerning VCOM.
VCOM: Common electrode voltage for TFT LCD
pixel.
Refer to PARTS LIST concerning VR300.
To perform this adjustment, it is recommended to
adjust after assembling the dummy lower case to
which a round hole is added as shown below.
Refer to the item 24 of PARTS LIST and
EXPLODED VIEW concerning the lower case.
Pressing Action Control button twice, Main Menu
display appears.
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