Fax Unit E674 (The Fax Unit Has A Fault.); X2E Controller E675; Communication Errors E677 - Oce 3121 Technical & Service Manual

37 Fax Unit E674 (The fax unit has a fault.)

Cause Step
Connector 1
Fax PBA

38 X2e Controller E675

Cause
Power supply from B2 kit
See 'Modification bulletin
survey' on page 6
39 Communication Errors
printer board and the machine has a fault.)
Cause Step
PBA 1
Printer board 2
PDL I/F
board, Sys-
tem mother-
board, Image
processor
PBA
ed.2
Checks
Is the connection of the follow-
ing normal?
between fax PBA and system
I
motherboard
between system motherboard
I
and image processor PBA
(between fax unit and ma-
chine)
Step Checks
1
E677 (The communication between the
Checks
Check the connection between
the printer board and the PDL
I/F board and the system moth-
erboard. Is any of the pins bent
or otherwise not normal?
Replace the printer board. Is
the problem corrected?
Yes/No Action
YES Correct the connection.
At this time, check the
pins for deformation.
NO Replace the fax PBA.
Yes/No Action
Replace the power supply
Yes/No Action
YES Correct the connection.
YES End.
NO Replace the PDL I/F
board, system mother-
board, and image proces-
sor PBA
Trouble shooting 35