Casio SE-S400 Service Manual page 29

[8] Back Light Test
[Function]
Tests the Back Light of the Main Display and the Customer Display.
[Operation]
All test procedures are the same for both tests except for the input command.
Main Display Command :
Customer Display Command :
c: Backlight ON/OFF
0 Back Light "OFF"
Back Light "OFF" with any key
1 Back Light "OFF"
2 Back Light "ON"
[Display of the Result]
BACK LIGHT
[Printout of the Result]
Main Display
DISP
BACK LIGHT
END
[9] Contrast Adjustment
[Function]
Adjusts the LCD contrast and writes the adjustment to the FLASH ROM.
Up to 16 adjustments can be written to the Flash ROM. If more than 16 adjustments are written, an
error occurs.
[Operation]
All adjustments procedures are the same for both tests except for the input command.
Main Display Command :
Customer Display Command : 4 2 2 k
Use the keys below to adjust the contrast, and press a key to save the adjustment value in the
Flash ROM.
Model
SE-S400/PCR-T500/PCR-T520
SE-C450/SE-C3500
PCR-T2300/PCR-T2400/SE-S3000 (US)
SE-S3000 (except US)
SE-S400/SE-S800/PCR-T500/PCR-T520/SE-C450
SE-S3000/SE-S900/PCR-T2300/PCR-T2400/SE-C3500
c 0 1 2 1 k
c 0 1 2 2 k
OK
121
OK
121
4 2 1 k
Contrast +1 (Dark)
– 27 –
Customer Display
DISP
BACK LIGHT
END
Contrast -1 (Light)
<
e
Q
Q
122
OK
122
:
R
O
: