[Misc] Ricoh Pro c901 Printing problem in Cyan Unit

[sri27679]

Hi Dear Techies

I have problem with my Ricoh Pro c901
in Cyan unit printing not coming in Paper center (Attached Photo)

i checked drum which is ok, and developer mag roller which is ok,
Shield glass which is ok , charge corona which is ok

and i swapped all the parts with another unit but problem is same in Cyan unit

if i keep on machine for a day (24 hrs ) the non printing gap is reducing

please help me

WhatsApp Image 2020-10-13 at 4.05.54 PM.jpg
Paper is printing in landscape

[slimslob]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

Portrait and landscape have to do with how something is hung on the wall. It has nothing to do with how paper is fed through a printer. The proper terms to use are SEF, Short Edge First, and LEF, Long Edge First.

[sri27679]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

Portrait and landscape have to do with how something is hung on the wall. It has nothing to do with how paper is fed through a printer. The proper terms to use are SEF, Short Edge First, and LEF, Long Edge First.

Yes it's LEF
I just mention to explain what is center

[bat]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

There is something in the laser beam path, between shield glass and laser unit mirrors. Once I found a screw in the laser unit opening resulting in the same manifestation.

[sri27679]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

There is something in the laser beam path, between shield glass and laser unit mirrors. Once I found a screw in the laser unit opening resulting in the same manifestation.

I inter changed laser units but problem is same

[mrwho]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

I inter changed laser units but problem is same

When you took out the laser unit, did you take a peek at the slit on the machine body and could you see the drum without any problem?

[sri27679]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

When you took out the laser unit, did you take a peek at the slit on the machine body and could you see the drum without any problem?

No I didn't take peek. yes drum is good . even i swapped with another unit drum

when i do process control the result is 61 for can unit

[mrwho]

Re: Ricoh Pro c901 Printing problem in Cyan Unit

Then I'd suggest taking out the laser unit and looking down on the hole through which the laser shines down onto the drum - I'd wager something's stuck there, blocking the path.