Ricoh D146 Service Manual page 1762

6. Touch panel check
Displays the difference of a detection coordinate value from the nearest reference point
relative to a standard 9 points on the screen.
7. Touch panel calibration
Perform a touch-panel calibration, and set a value.
One + mark after another is displayed at locations (5 points) required for calibration. Press the
center point.
When input of 5 points is complete, a display for set/reset appears.

OK: Press Menu key

Retry: Press Back key
SM 25
System Maintenance
D148