Casio DT-940 Service Manual page 31

Program No.3
Program Name: LCD
NO. Display/Read indicator
1
Black display on full-screen
2
Cross-stitch on full screen
3
Reverse cross-stitch on full
screen
Symbol is displayed
4
S
Read indicator: Green
Operation
Press [3] and [ENT] keys in order
with Main Menu displays.
Press [ENT] key.
Press [ENT] key.
Press [ENT] key.
- -
+
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Remarks/Result
The program confirms if there is no
defect on display by showing test
pattern on LCD.
If no error occurs, display returns
to the menu screen.