121 error messages
Error code Description Action
121.02 Fuser went over the required temperature during
EWC/line voltage detection.
See
“Fuser service check” on page 184.
121.03 Fuser hardware and driver mismatch.
121.06 Fuser power is at 100% but did not reach the
required temperature.
121.08 Fuser did not reach the required temperature while
the page is in the fuser.
121.09 Fuser did not reach the required temperature for
motors.
Note: Not applicable to standby mode.
121.10 Fuser did not reach the required temperature
during start of EWC/line voltage detection.
121.11 Fuser reached the required temperature during
final EWC/line voltage detection too late.
121.12 Fuser did not reach the required temperature
during final EWC/line voltage detection.
121.13 Fuser reached the required temperature during
final EWC/line voltage detection too fast.
121.20 Fuser did not reach the required temperature
during steady state control.
121.21 Fuser low power trace heating rate exceeded error
threshold.
121.22 Open fuser relay was detected.
121.23 Fuser reached the required temperature during
final EWC/line voltage detection too late.
121.24 Fuser did not reach the required temperature
during final EWC/line voltage detection.
121.25 Control did not roll over to steady state control after
line voltage detection.
121.26 Fuser did not reach the required temperature
during warm up.
121.28 Fuser did not reach the required temperature
during EP warm up.
121.30 Fuser is on for more than the allowed time after a
gap blowout, and did not reach the required
temperature.
121.31 Fuser too hot.
121.32 Fuser did not reach the required temperature at
100% power.
5028
Diagnostic information
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