KM 2550 is a good machine. It has been in my personal use for a long time. It is a multifunction product (Printer, Copier, Scanner and Fax as an option). The only problem I faced in this machine is that sometimes it display "C6000" error code. After consulting a service representative I came to know that this is because of broken fixing wire or low power supply voltage. Machine does not worms up properly and displays error code. If you have same problem you can reset this code by following these steps:
1. Enter 1087 twice (1087 1087) from the machine key board. Display will change to "U000".
2. Enter 163 using the numeric keys.
3. Press Start (green) key twice.
Machine will restart. I hope that solves the problem, but if error occurs again, a fault may have occurred in fusing unit of the photocopier. In this case it is better to call a trained technician.
Same procedure can be repeated for the error codes "C6020", "C6050", "C6400" and "C6420".
I am providing this information without any guarantee. Use it on your own risk.
1. Enter 1087 twice (1087 1087) from the machine key board. Display will change to "U000".
2. Enter 163 using the numeric keys.
3. Press Start (green) key twice.
Machine will restart. I hope that solves the problem, but if error occurs again, a fault may have occurred in fusing unit of the photocopier. In this case it is better to call a trained technician.
Same procedure can be repeated for the error codes "C6020", "C6050", "C6400" and "C6420".
I am providing this information without any guarantee. Use it on your own risk.
