Ricoh A172 - 1.2 Scanning

1.2 SCANNING
SC107: Lamp regulator malfunction
- Definition - [B]
The machine 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 (FU802)
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 (FU802)
Trouble -
shooting
SM 6-3 A172/A199