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No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
557 C
Zero cross frequency error
When the zero cross signal is 66 or more and it is detected 10 times or
more in 11 detections, the machine determines that input 60 Hz and this
SC occurs.
Noise (High frequency)
Defective PSU
1. Check the power supply source.
2. Replace the PSU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
559 A
Consecutive fusing jam
The paper jam counter for the fusing unit reaches three consecutive
times (the fusing exit sensor does not detect the paper).
Paper jam in the fusing unit.
Remove the paper that is jammed in the fusing unit. Then make sure
that the fusing unit is clean and has no obstacles in the paper feed path.
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