Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

[pajeroid]

Any ideas, screenshot attached. Any ideas? Tried boards (HV 1 & 2, PRCB, MCB, Power Board), laser, IU's, Fuser, T-Roller, T-Roller Pressure/Retract Unit, Cleaning T-Belt Contacts, T-Belt!

[dallas]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

It could be a fusing speed problem.
The first suspect would be the loop amount detection sensor 1/2 and the actuator.

[Avskrap]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

A colleague of mine had this problem, swapped EVERYTHING (except the thing that solved it), like you.
Finally, he replaced the EEPROM and the problem went away.

[pajeroid]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

A colleague of mine had this problem, swapped EVERYTHING (except the thing that solved it), like you.
Finally, he replaced the EEPROM and the problem went away.

Thanks for the replies... can you tell me what EEPROM you mean? The NVRAM? Thanks, Dave.

[Avskrap]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

The one responsible for the color calibration, behind the shield box... Don't know what it's called, even KM here in Sweden just call it EEPROM...

[David Morrison]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

Any ideas, screenshot attached. Any ideas? Tried boards (HV 1 & 2, PRCB, MCB, Power Board), laser, IU's, Fuser, T-Roller, T-Roller Pressure/Retract Unit, Cleaning T-Belt Contacts, T-Belt!

Wow! The first thing I would have tried was the cyan drum.

[pajeroid]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

Lmao - It was on every colour - forgot to mention that bit.

[HoonBoy]

Re: Olivetti MF451 / Konica C452 Leading Edge Faded Faint Speckled

Did you try adjusting the paper separation voltage?