SERVICE CALL CONDITIONS April 2007
4-28
SC codes Group 1: Scanning
Exposure lamp error
SC101 D
The white level peak did not
reach the prescribed threshold
when the white plate was
scanned.
• Dirty optics
• Exposure lamp defective
• Exposure lamp does not turn ON
• Lamp stabilizer defective
• High voltage line leak
• Power/signal harness defective
Scanner home position error 1 SC120 D
The scanner home position
sensor did not detect the home
position (did not go OFF) after
the scanner moved forward 20
mm..
• Scanner motor driver board defective
• Scanner motor defective
• Scanner HP sensor defective
• Harness between scanner motor and
scanner I/O board disconnected or
broken.
Scanner home position error 2 SC121 D
The scanner home position
sensor did not go ON after the
scanner moved forward 1 mm
and the feeler entered the HP
sensor.
• Scanner motor defective
• Scanner HP sensor disconnected,
defective
Black level detection error SC141 D
During AGC the value for black
level was not within ±2 of the
prescribed value. The copier can
reproduce monochrome, but not
color.
• SBU defective
• Harness defective
White level detection error SC142 D
During AGC the value for white
level was not within ±7 of the
prescribed value.
• Exposure lamp defective
• Harness disconnected, damaged
• Dirty exposure glass, optics
• Scanner motor, drive assembly defective
• SBU board defective
