MPC2051 Black shadow

**iliketui** · 03-10-2015

I have an MPC2051 that is leaving a shadow on some parts of a printed document.

The shadow only occurs when duplexing and is only on the odd pages (ie 1, 3, 5, 7, 9 etc).

I have attached a sample. Unfortunately the original looks better than the scanned copy.

Has anyone else experienced this? Any advice would be greatly appreciated.

20150310_114242.pdf

**slimslob** · 03-10-2015

Check the paper transfer roller and the fusing unit pressure roller.

**iliketui** · 03-10-2015

Thought i might add the the shadow looks like a fine mist, kind of like when you drop toner on a tiled floor.

**TonerMunkeh** · 03-10-2015

What sort of mileage does the black PCU and ITB cleaning unit have on it?

**slimslob** · 03-10-2015

Originally Posted by TonerMunkeh

What sort of mileage does the black PCU and ITB cleaning unit have on it?

It is in the service manual and Product Support Guide.

**iliketui** · 03-10-2015

Originally Posted by TonerMunkeh

What sort of mileage does the black PCU and ITB cleaning unit have on it?

The black PCU and Dev unit was replaced about 3 or 4 weeks ago so only has 4K on it. About 18 months ago the ITB tore so i replaced it along with the Cleaning unit and transfer roller and all three have 93K.

**iliketui** · 03-11-2015

I have replaced the ITB Cleaning unit and Transfer roller today and it seems to have cleared up the shadow a bit. There is still a little the occasional patch of shadow near the black bar at the top of an SMC report but not as bad a yesterday.