Error code Description Action
121.29 Attempting to print with estimated power at or
above minimum power.
Go to
“Fuser service check” on page 86.
121.30 Fuser failed to reach final temperature in time.
121.31 Fuser power is below minimum.
121.36 Fuser under temperature in standby.
121.37 Fuser under temperature while printing.
121.38 Fuser open thermistor.
121.39 Fuser shorted thermistor.
121.40 Fuser shorted thermistor.
121.42 Fuser power above maximum.
121.5x Fuser is past life and has an error. Go to
“Fuser assembly removal” on
page 267.
121.6x Fuser is past life and has an error.
121.7x Fuser is past life and has an error.
121.8x Fuser is past life and has an error.
121.9x Fuser is past life and has an error.
5027
Diagnostic information
85
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