SERVICE CALL CONDITIONS
SM
4-13
B234/B235/B236/D101/D102/D103
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4.2.4
SC CODE DESCRIPTIONS
Exposure Lamp Error
SC101
B
The standard white level was not
detected properly when
scanning the white plate.
•
Exposure lamp defective
•
Lamp stabilizer defective
•
Exposure lamp connector defective
•
Scanner motor control unit (MCU board)
defective
•
SBU board defective
•
Dirty standard white plate
•
Dirty scanner mirror or scanner mirror or
lens block out of position
Scanner Home Position Error 1
SC120
B
The scanner home position
sensor does not detect the OFF
condition during initialization or
copying
•
Scanner home position sensor defective
•
Poor connection between HP sensor and
MCU board
•
Scanner motor control unit (MCU board)
defective
•
Scanner wire, timing belt, pulleys, or
carriage out of position
•
Scanner motor defective
•
Poor connection or defective harness
between MCU board and scanner motor
Scanner Home Position Error 2
SC121
B
Scanner home position sensor
does not detect ON.
•
Scanner home position sensor defective
•
Poor connection between MCU board
and scanner home position sensor
•
Harness between MCU board and
sensor defective
•
MCU board defective
•
Scanner wire, timing belt, pulleys, or
carriage out of position
•
Scanner drive motor defective
•
Harness between MCU board and
scanner motor disconnected
