Ricoh Kr-P2, Field Service Manual

Page: 112 / 200

Code No. Symptom Possible Cause
543 A
Fusing overheat error: Software
• Fusing thermistor defective
• Power supply board defective
A fusing temperature of over 235 ° C is
detected for 0.5 seconds by the fusing
thermistor.
544 A
Fusing overheat error: Software
• Fusing control out of control
• Power supply board defective
The machine detects an overheat error of
the hardware.
545 A
Fusing lamp stays on
• Fusing thermistor defective
• Power supply board defective
• Defective connection of the fusing unit
The fusing lamp stays on more than 12
seconds after the main motor has been
turned off.
547 B
Zero cross signal malfunction
• Power supply board defective
• Unstable main power supply
condition
Zero cross signals are already detected for
0.15 seconds before the fusing relay-on.
Zero cross signals are not detected for 3
seconds or the machine cannot detect a
frequency.
559 A
Fusing jam error: 3 counts
• Obstacle in the paper transport path
• Fusing unit installed incorrectly
• Fusing unit defective
At the fusing exit sensor the paper jam is
detected late for three pulse counts (lag
error) when SP1913-001 is set to "1: Yes".
620 B
Communication error - GAVD
• Engine board defective
The engine board detects an unknown
device.
622 B
Communication error - PFU
• Noise
• Harness connection disconnected
between the machine and PFU
Three consecutive errors are detected
during polling after the PFU is successfully
detected by the machine.
2. Appendix: Troubleshooting Guide
14
2