Oce 3121, Technical & Service Manual

Page: 143 / 908

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ed.2 Trouble shooting 35
37 Fax Unit E674 (The fax unit has a fault.)
38 X2e Controller E675
39 Communication Errors
E677 (The communication between the
printer board and the machine has a fault.)
Cause Step Checks Yes/No Action
Connector 1 Is the connection of the follow-
ing normal?
■
between fax PBA and system
motherboard
■
between system motherboard
and image processor PBA
(between fax unit and ma-
chine)
YES Correct the connection.
At this time, check the
pins for deformation.
Fax PBA NO Replace the fax PBA.
Cause Step Checks Yes/No Action
Power supply from B2 kit
See ‘Modification bulletin
survey’ on page 6
1 Replace the power supply
Cause Step Checks Yes/No Action
PBA 1 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? YES Correct the connection.
Printer board 2 Replace the printer board. Is
the problem corrected? YES End.
PDL I/F
board, Sys-
tem mother-
board, Image
processor
PBA NO Replace the PDL I/F
board, system mother-
board, and image proces-
sor PBA