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121 errors
121 error messages
Error code Description
121.00
Fuser failed to reach the temperature during
warm‑up.
121.01
There was an attempt to heat fuser, but it was not
installed.
121.02
Fuser went over the required temperature during
EWC/line voltage detection.
121.03
Fuser hardware and driver mismatch.
121.04
There was an attempt to heat fuser, but fuser relay
was open and fuser PIC microcontroller did not
report an error or did not respond.
121.05
There was an attempt to heat fuser, but fuser relay
was open and fuser PIC microcontroller reported
an error.
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.
121.19
Fuser high power trace reached the required
temperature during final EWC/line voltage
detection too fast.
Diagnostics and troubleshooting
200
Action
"Fuser service check" on page
See
5028
203.
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