Ricoh MP C5503 - Black image problem

[Zaxxon]

Hi fellow techs.

I got this MP C5503 with K- image problem - PDF Scan attached.

Counter page - OK!

Logging pages - Background and dev. particles

Sky Shot CMY - OK!

Sky Shot K - faint

Test page color:
CMY ok, K horisontal ok, K vertical -faint.

So far I have changed:

1. K PCU
2. K-Dev Unit
3. Image Transfer UNIT (incl. cleaner)

Have you seen this before?

Nice day to you all.

20150326101227899.pdf

[UCPrint]

Re: Ricoh MP C5503 - Black image problem

Have you tried cleaning the laser unit? seen this sort of thing on older models like the MPC3500, general rule is if ive changed the drum and dev/unit its normally the laser, let us know how you resolve this one!

[Zeldaman]

[Sashko]

Re: Ricoh MP C5503 - Black image problem

No development bias apllied to the development roller.

[tjvincent]

Re: Ricoh MP C5503 - Black image problem

When the dev unit/pcu was replaced did they forget to put the cover on the back with the grounding plate ?

[Zaxxon]

Re: Ricoh MP C5503 - Black image problem

When the dev unit/pcu was replaced did they forget to put the cover on the back with the grounding plate ?

Thats is possible, will go back and have a look.

Thanks for all you kind help.

[slimslob]

Re: Ricoh MP C5503 - Black image problem

Instead of sky shots, try using the checker flag test pattern.

[Cipher]

Re: Ricoh MP C5503 - Black image problem

You had SC361-01 on March 19th & 23rd which is a K TD sensor adjustment error.

Did you set 3701-003 to 1 and power off before replacing the K dev unit?

Also check the back plate on the K PCDU, there is a metal voltage strap that needs to be in the correct position for a good contact.

[Zaxxon]

Re: Ricoh MP C5503 - Black image problem

You had SC361-01 on March 19th & 23rd which is a K TD sensor adjustment error.

Did you set 3701-003 to 1 and power off before replacing the K dev unit?

Also check the back plate on the K PCDU, there is a metal voltage strap that needs to be in the correct position for a good contact.

Thanks

I did set 3701 for PCU and later for the dev.unit and transfer unit.

But I seriously can't remember if the contact plate was in place... Damn!!!

Have orderd HV board and returning to this mashine in about 2 days, hoping that it's a missing back plate though.

Thanks to all for your fast and professional help.

I will return later with a follow up.

[Zaxxon]

SOLVED - Re: Ricoh MP C5503 - Black image problem

When the dev unit/pcu was replaced did they forget to put the cover on the back with the grounding plate ?

This was the answer, the groundplate was missing (But I didn't forget to attach, it was one of my colleagues...)

Thanks all