Oce 3121 Technical & Service Manual page 81

Cause
Developing unit
(Development fault)
Toner detection
(Development fault)
OPC unit
Image processor PBA
Analogue processor
PBA
8 TSM Océ 3121
Step Checks
9 Is the developing unit fit-
ted correctly? Ensure that
the developing rollers are
in firm contact with the
OPC.
10 Does the developing unit
contain toner?
11 Replace the OPC unit. Is
the problem corrected?
Y/N Action
No Refit the developing unit.
No Check the toner sensor.
I
Check the connector
I
and the harness for
electrical continuity.
Yes End.
No Try replacing the image
processor PBA , or the
analogue processor PBA.
Image quality