BH-C-360, P28 code

[Hansoon]

Customer has a BH-C-360 showing a P28 code. Never had this before with these series.

I cleaned the IDC sensors, replaced the transfer belt K, C, M drums all with rebuild ones. Only the C-developing unit is overdue. Any ideas please?
(And yes, I know the machine is “very old, not supported anymore, no parts available, and modern machines are much better”, but...... the customer is happy with it.) 😎

Hans

[Hansoon]

Got it, (Imagine, I read finally the technical manual) it's the rear IDC sensor.

Hans