Ricoh D143 Field Service Manual page 823

No. Type
Pressure roller overheat : Center (software error)
The detected pressure roller temperature stays at 215°C or more for 1 second for
10 consecutive times.
573 A
• Defective IOB
• Defective IPU
1. Replace the IOB.
2. Replace the IPU.
No. Type
Pressure roller overheat : Center (hardware error)
The thermistor detects 220°C or more.
• Defective IOB
574 A
• Defective IPU
• Defective fusing control system
1. Replace the IOB.
2. Replace the IPU.
No. Type
NC sensor broken: Center
The sensor detects -17°C or less for 100 seconds.
581 A
• Broken cables of thermopile or thermistor
• Defective connection of connectors
1. Check and replace the connection of the cables and connectors.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Service Call
821