Service Call
M0C3/M0C4/M0C5/M0C6/M0C7 6-10 SM
No. Type Error Name/Error Condition/Major Cause/Solution
SC554 A High temperature error (hard) (non-contact thermistor)
The detected temperature stays at 228°C for 0.2 second, and this consecutively
occurs 4 times.
• Defective main board
• Defective PSU
• Defective fusing unit
1. Reset the SC.
2. Replace the fusing unit.
3. Replace the drawer harness.
4. Replace the PSU.
No. Type Error Name/Error Condition/Major Cause/Solution
SC557 B Zero-crossing frequency exceeded
The number of zero cross signal interrupts do not reach a specified value during
frequency detection.
• Unstable frequency of the power supply line
None
No. Type Error Name/Error Condition/Major Cause/Solution
SC559 A Fuser 3 times jam error
The paper jam counter for the fusing unit reaches 3. The paper jam counter is
cleared if the paper is fed correctly.
• Defective fusing unit
• Defective fusing control
This SC is activated only when this function is enabled with "SC559 Detection" in
"Engine Maintenance" (default "OFF").
Turn off this function after a jam removal.
No. Type Error Name/Error Condition/Major Cause/Solution
SC580 A Environment thermistor error
The thermistor output is less than 0°C for 5 seconds after the fusing lamp turns
ON.
Disconnected or defective environment thermistor
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