Canon GP215 Service Handbook page 166

SERVICE MODE
8. Checking the Control Panel Indications
Item
LCD-CHK
• checking for missing dots on
LCD
SCAN_LAMP
• checking activation of scan-
ning lamp
DISP-LED
• checking control panel LEDs
7–58
*4* FUNCTION 08 – > ( )
LCD-CHK (OK : START)
SCANLANP (OK : START)
DISP-LED (OK : START)
1) Press 'LCD-CHK' to highlight.
2) Press the OK key.
• The entire face of the LCD reverses (white video;
keys and notations disappear).
3) Press the area where the OK key was shown.
• The entire face of the LCD reverses (black video).
4) Press the area where the OK key was shown.
• The LCD will return to normal state.
1) Press 'SCAN_LAM' to highlight.
2) Press the OK key.
• The scanning lamp will turn on.
3) Press the OK key.
• The scanning lamp will turn off.
1) Press 'DISP-ED' to highlight.
2) Press the OK key.
• The LEDs on the control panel will turn on.
3) Press the OK key.
• The LEDs on the control panel will turn off.
CANCEL
JUMP
+
–
OK
Description Reference
page