Yellow print on RICOH MPC 6503

[Exodia-P4]

Hello everybody

I have a problem on a Ricoh MPC 6503, all the color's print get out in yellow (not the white and black print...).

Yellow print.pdf

(Toner OEM - colors counter +/- 150k)

I try to make a colors calibration... failed / power OFF-ON : failed / Change potential sensor : failed

After that, I try a process control and directly I have an Error SC-370-01 (ITB looks good). I Clean the ID sensor on my ITB and test again, SC-370-01... (history of process control : 21212121 ).

I Try to initialize TD sensor and it's OK

It's the second time that we have this problem... Before, I do just a calibration and it was ok...

Anybody have allready have this problem ???

Thank you

[copier tech]

Hello everybody

I have a problem on a Ricoh MPC 6503, all the color's print get out in yellow (not the white and black print...).

Yellow print.pdf

(Toner OEM - colors counter +/- 150k)

I try to make a colors calibration... failed / power OFF-ON : failed / Change potential sensor : failed

After that, I try a process control and directly I have an Error SC-370-01 (ITB looks good). I Clean the ID sensor on my ITB and test again, SC-370-01... (history of process control : 21212121 ).

I Try to initialize TD sensor and it's OK

It's the second time that we have this problem... Before, I do just a calibration and it was ok...

Anybody have allready have this problem ???

Thank you

Refer to the service manual for your process control result. As i'm sure you know a successful result should be 11111111

Most likely you'll have to replace the yellow developer.

[Exodia-P4]

Refer to the service manual for your process control result. As i'm sure you know a successful result should be 11111111

Most likely you'll have to replace the yellow developer.

Yes, I already refer to the service manuel... I just would anoter opinion

[Polo-022]

It must be the Yellow Developer Unit. The Toner Density Sensor has failed.
Replace as required.

[copier tech]

Yes, I already refer to the service manuel... I just would anoter opinion

Could be a faulty ID sensor (front)

SC370-01 ID sensor calibration error (F)

[Exodia-P4]

Could be a faulty ID sensor (front)

SC370-01 ID sensor calibration error (F)

I think I have this error because ITB is all yellow (Due tu the yellow PCDU problem)...

[slimslob]

Does the problem occur in both copying and printing, just copying or just printing?

1. If just copying you most likely have an optics problem.
2. If just printing it most likely is a board, memory or HDD only used for printing.
3. If both you are looking at the yellow development unit or the yellow PCU. My vote goes for the PCU. Try cleaning the charge roller. A dirty charge roller = reduced charge on the drum. Reduced charge on the drum = background.

[copier tech]

Does the problem occur in both copying and printing, just copying or just printing?

1. If just copying you most likely have an optics problem.
2. If just printing it most likely is a board, memory or HDD only used for printing.
3. If both you are looking at the yellow development unit or the yellow PCU. My vote goes for the PCU. Try cleaning the charge roller. A dirty charge roller = reduced charge on the drum. Reduced charge on the drum = background.

He is getting an SC-370-01 error & history of process control : 21212121 so that has nothing to do with the scanner / optics.

[slimslob]

He is getting an SC-370-01 error & history of process control : 21212121 so that has nothing to do with the scanner / optics.

Then we go to 3.

[bat]

This could be a problem with Yellow Potential Sensor. I have seen it on some production printers. No SC Code, just uniform yellow background fill.