Code LCD message Symptom Solution
M1-1113 Paper Jam
in Tray1
The paper has not reached the
feed1 sensor within normal time
after pick up.
1. Clear the jam.
2. Check if the holder pad or pick
up roller rubber has worn out.
Replace the holder pad or pick
up roller.
3. If the problem persists, replace
the pick up solenoid.
M2-1211 Paper Jam
inside machine
At power-on / warm up, the
registration sensor has detected
the paper.
1. Clear the jam.
2. Check if the holder pad or pick
up roller rubber has worn out.
Replace the holder pad or pick
up roller.
3. If the problem persists, replace
the pick up solenoid.
M3-1111 Paper Jam
in exit area
At power-on / warm up, the exit
sensor has detected the paper.
Clear the jam.
M3-2130 Output bin full
Remove paper
The output tray is full.
Or the sensor is not facing down.
Remove papers from the output
tray, the machine resumes printing.
Or make sure the sensor is facing
down.
U1-1211 Error #U1-1211
Turn off then on
Low heat error has occurred. Refer to the fuser error
troubleshooting.
U1-2112 Error #U1-2112
Turn off then on
Abnormal ADC has occurred.
ZeroCross Signal detect error has
occurred.
Is the thermistor resistance value in
300~450Kohm?
Yes : Replace the thermistor.
No : Replace the fuser unit. If
the problem persist after
replacing the fusur unit,
replace the SMPS board or
Main board.
U1-2121 Error #U1-2121
Turn off then on
Over heat error has occurred. Refer to the fuser error
troubleshooting.
U2-1112 Error #U2-1112
Turn off then on
LSU has some problem. Turn off the machine then on.
If the problem persist, replace the
LSU unit.
U2-1114 Error #U2-1114
Turn off then on
LSU does not work but the Lready
signal is detected.
Turn off the machine then on.
If the problem persist, replace the
LSU unit.
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