Ricoh P C300W Field Service Manual page 215

SC No. Type
1.
2.
3.
4.
SC No. Type
SC541- A Fusing thermopile (TH2) disconnect error
00
After turning the fusing lamp on, the fusing thermopile has detected the AD value
of 0x004 (about -50 °C) or below continuously for 0.2 seconds.
•
•
Enter the SP mode and execute fuser SC reset. Then turn the machine OFF and
ON.
If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1.
2.
3.
4.
SC No. Type
SC542- A No reload temperature of the fusing thermopile (TH2)
02
After turning the fusing lamp on, the fusing thermopile has failed to reach the
reload temperature (96 °C) continuously for 8.6 seconds.
SC542- A No reload temperature of the fusing thermopile (TH2)
03
After reaching the reload temperature, the fusing thermopile has failed to reach the
reload temperature (96 °C) continuously for 19.8 seconds.
•
•
•
Enter the SP mode and execute fuser SC reset. Then turn the machine OFF and
ON.
If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1.
2.
Error Name/Error Condition/Major Cause/Solution
Replace the fusing thermopile anti-condensation fan (FAN4).
Re-connect the connector of the fusing thermopile anti-condensation fan
(FAN4).
Replace the fusing thermopile anti-condensation fan (FAN4) harness.
Replace the EGB (PCB1).
Error Name/Error Condition/Major Cause/Solution
Fusing thermopile (TH2) disconnected
Harness connector lose, broken, or defective
Re-connect the connector of the fusing thermopile (TH2).
Replace the fusing thermopile (TH2).
Replace the fusing thermopile (TH2) harness.
Replace the EGB (PCB1) or/and the PSU (PCB4).
Error Name/Error Condition/Major Cause/Solution
Thermopile lens dirt
Power supply voltage low
Overheating protection device triggered (blown fusing thermostat)
Check the input power source and reconnect the cable to the outlet.
Replace the fusing thermopile (TH2).
6.Troubleshooting
203