Scanning - Ricoh A109 Service Manual

1.2 SCANNING

SC107: Lamp regulator malfunction
- Definition - [B]
Detects lamp regulator malfunctions by monitoring the signal for both the
exposure lamp on and off conditions.
<Possible causes>
•
Lamp regulator defective
•
Exposure lamp open
•
Optics thermoswitch open
•
Scanner control board defective or poor connection
SC120: Scanner HP sensor abnormal - Stays off
- Definition - [B]
The scanner home position sensor does not detect the on condition
during scanner initialization.
<Possible causes>
•
Scanner HP sensor defective
•
Scanner motor defective or poor connection
•
Scanner drive board defective or poor connection
•
Scanner control board defective or poor connection
•
Loose Allen screw on scanner drive pulleys
•
DC power supply board defective (FU803) or (FU805)
SC121: Scanner HP sensor abnormal - Stays on
- Definition - [B]
The scanner home position sensor does not detect the off condition
during scanner initialization.
<Possible causes>
•
Scanner HP sensor defective
•
Scanner motor defective or poor connection
•
Scanner drive board defective or poor connection
•
Scanner control board defective or poor connection
•
Loose Allen screw on scanner drive pulleys
•
DC power supply board defective (FU803)
FSM 6-3 A109