4.8 Touch Panel Check
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MAINTENANCE
4.8.3 Touch panel check operations
If touch [Touch panel check] of self-check, a black-filled screen is displayed over the entire screen area.
Step 1. Touch a part of the screen.
The touched part becomes a yellow-filled display.
Step 2. If touch the upper left part, returns to the self-check.
Checking the upper left part of the screen
Only the upper left part of the screen cannot be filled with yellow.
If returns to the self-check by touching the upper left part, judge that the upper left area operates
normally.
Black-filled screen
Yellow
color
Upper-left touch position