Error Messages - Konica Minolta bizhub 4020 Service Manual

121 error messages

Error code Description
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 temp when page was in
fuser.
121.20 Fuser undertemp during steady state
control. Can ocurr in printing or standby
modes.
121.22 Fuser did not warm enough to start line
voltage detection.
121.23 Fuser took too long to heat to line detection
temp.
121.24 Fuser never reached detection temperature.
121.25 After line voltage detection, control did not roll
over to steady state control in time.
121.26 Failed to reach temperature during warm up.
121.28 Failed to reach EP warm up temperature in
time.
121.29 Fuser failed to reach pre-heat temperature for
motor start during warm up.
121.30 Fuser failed to reach printing temperature by
the time a page reached the fuser.
121.31 Fuser is too hot. Global overtemp check.
121.32 Open fuser main thermistor.
121.33 Open fuser edge thermistor.
121.34 Open fuser backup roll thermistor.
121.35 Attempting to POR after receiving a 121.34.
121.36 Fuser did not heat to allow compression jog.
121.37 Fuser heated faster than allowed during line
voltage detection.
bizhub 4020/3320 Service Manual
- 120 -
Action
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.
Go to Fuser service check.