Ricoh mp5503 yellow disappear on printed job

[Pixtech Frameworks]

Hi All,
A customer ricoh mpc5503 yellow appears when colour pattern is printed, but printed or photocopy jobs, yellow disappears completely.
For example a job that has Red in it only Magenta appears. I have tried all I could know changing developer, opc drum, OEM toner, it seems not to work.

Does anyone knows what the issue is??

[copier tech]

Hi All,
A customer ricoh mpc5503 yellow appears when colour pattern is printed, but printed or photocopy jobs, yellow disappears completely.
For example a job that has Red in it only Magenta appears. I have tried all I could know changing developer, opc drum, OEM toner, it seems not to work.

Does anyone knows what the issue is??

Can you post some examples of the issue?

[Phil B.]

Can you post some examples of the issue?

hes got the same post in Ricoh forum