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Error #U1-2320 Turn off then on
Error #U1-2330 Turn off then on
Error #U1-2340 Turn off then on
? Symptom
The temperature control of fuser unit is abnormal. (U1–2320 : Open Heat Error / U1–2330 : Low Heat Error / U1–2340
: Over Heat Error)
? Troubleshooting method
1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared?
2) If the problem persists, turn the machine off and remove the fuser unit.
a) Check if the fuser connector is connected properly .
b) Check if the input voltage is normal.
c) Check if the thermistor is twisted or contaminated.
3) After confirming continuity in the fuser connector and the problem still exists; order an SMPS/HVPS and Fuser
Unit and install as is necessary
