Error code Description Action
121.09 Fuser did not reach the required temperature for
motors.
Note: Error is not applicable to standby mode.
See
“Fuser low temperature error service
check” on page 134.
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.
See
“Fuser high temperature error service
check” on page 133.
121.19 Fuser high power trace reached the required
temperature (during final EWC/line voltage
detection) too fast.
121.20 Fuser high power trace heating rate went over the
limit.
121.21
Fuser low power trace heating rate (from 165
o
C to
180
o
C) went over the limit.
121.22 Open fuser relay was detected. See
“Fuser error service check” on page 132.
121.28 Fuser did not reach the required temperature
(during EP warm‑up).
See
“Fuser low temperature error service
check” on page 134.
121.32 Fuser did not reach the required temperature (on
100% power).
121.33 Fuser did not reach the required temperature
(while page is in the fuser).
121.34 Fuser did not reach the required temperature
(during steady state control).
121.36 Open fuser relay was detected with very cold or
unknown ambient temperature.
121.41 Fuser mechanism failed to detect the expected
cam sensor transition.
121.50 Fuser went over the required temperature (during
global overtemp check).
See
“Fuser high temperature error service
check” on page 133.
121.52 Main thermistor temperature is out of range.
121.53 Main thermistor temperature change rate is out of
range.
121.71 Open fuser main heater thermistor was detected. See
“Fuser error service check” on page 132.
7018
Diagnostics and troubleshooting
131