Description: Development bias leak
A development bias leak signal was detected for 200 ms.
Causes: High voltage supply board defective. Defective cartridge connection
Code: 500
Description: Main motor error
The machine does not detect a main motor lock signal within 700 ms after the main motor started to rotate. -or- The machine detects a main motor lock signal within 500 ms after the main motor started to rotate, after that, the main motor lock signal does not detect within 200ms. -or- The machine does not detect a main motor lock signal within 200 ms after the main motor switched off.
Causes: Main motor defective. Mechanical overload on the drive mechanism
Code: 541
Description: Fusing thermistor error
The fusing temperature did not rise higher than 20C within 10 sec. after the main motor switched off. -or- The fusing temperature was detected lower than 0C for over 1 sec. after the power relay switched on.
Causes: Thermistor disconnected, defective. Fusing lamp disconnected, defective. Fuse blown. Power supply board defective. Fusing unit connected improperly
Code: 542
Description: Fusing temperature warm-up error
Just before reaching warm-up temperature, the fusing temperature did not rise above 80oC within 15.5 sec. after the power relay switched on.
Causes: Thermistor defective. Fusing lamp open. Fusing thermostat open. Power supply board Defective. Defective connection of the fusing unit
Code: 543
Description: Fusing overheat error – software
The fusing temperature was detected higher than 235C for longer than 200 ms.s
Causes: Fusing thermistor defective. Power supply board defective
Code: 544
Description: High temperature detection: Hard
The thermister detects a high temperature signal.
Causes: Defective thermister. Defective fusing unit, PSU, engine board