Lexmark M5150 Service Manual page 239

Error code Description
120.80 Fuser drive motor excessive PWM / over
temperature
121.07 Fuser has been on for more than allowed
after a gap blowout, and the temperature
is still too cold
121.08 Fuser was under temperature when page
was in fuser
121.20 Fuser undertemp during steady state
control
121.22 Fuser did not warm enough to start line
voltage detection
121.23 Fuser took too long to heat to line
detection temperature
121.24 Fuser never reached fuser detection
temperature
121.25 After line voltage detection, control did not
roll over to steady state control in time
If the problem remains, replace the
controller board.
121.26 Fuser failed to reach temperature during
warm up
121.28 Fuser failed to reach EP warm-up
temperature in time
121.29 Fuser failed to reach preheat temperature
for motor start during warm up
121.30 Fuser failed to reach printing temperature
by the time a page got to the fuser
121.31 Fuser has gotten too hot
121.35 Attempting to reset the printer after
receiving a 121.34
If the problem remains, replace the
controller board.
121.36 Fuser did not heat to allow compression
jog
121.32 Open fuser main thermistor
If the problem remains, replace the fuser.
121.33 Open fuser edge thermistor
If the problem remains, replace the fuser.
121.34 Open fuser backup roll thermistor
If the problem remains, replace the fuser.
Action
Go to "Fuser drive motor service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Controller board removal" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Fuser service check" on page
Go to "Controller board removal" on page
Go to "Fuser service check" on page
Go to "Fuser removal" on page
Go to "Fuser removal" on page
Go to "Fuser removal" on page
Diagnostic information
239
4063
243.
243.
243.
243.
243.
243.
243.
492.
243.
243.
243.
243.
243.
492.
243.
459.
459.
459.