church mouse
09-16-2011, 08:29 PM
I am having a problem with our church copier, an EP1085 displaying code C0520 [which I think is high fuser temperature] and tripping out after a few seconds.
I cleaned everything in the fuser unit and checked the bulb, which seems good, but still get the error code and tripping.
It may be the thermistor but I don't know what resistance it should be. I metered the out of circuit thermistor resistance, and cold it is about 1M6. Heated gently with a hot air gun it fell to about 80 Kohms. Can anyone advise me if this is a bad thermistor please?
Can anyone please confirm whether this machine is auto reset after a fault is repaired, or is there a trick to resetting it.
I would be grateful to know if there is anything else I should be checking which could be giving rise to this code.
Many thanks
I cleaned everything in the fuser unit and checked the bulb, which seems good, but still get the error code and tripping.
It may be the thermistor but I don't know what resistance it should be. I metered the out of circuit thermistor resistance, and cold it is about 1M6. Heated gently with a hot air gun it fell to about 80 Kohms. Can anyone advise me if this is a bad thermistor please?
Can anyone please confirm whether this machine is auto reset after a fault is repaired, or is there a trick to resetting it.
I would be grateful to know if there is anything else I should be checking which could be giving rise to this code.
Many thanks