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2-64 Service Manual
5021-0XX
986Duplex connection error 2 service check
Step Questions / actions Yes No
1 Check duplex unit cable. is
cable properly connected?
Replace duplex
unit. See
Duplex unit
assembly
removal on
page 4-13. If
problem
persists, go to
step 2.
Properly connect
cable. If problem
persists, go to
step 2.
2 Check cable connection to
connector DPCN located
on engine controller board.
See Engine controller
board removal on
page 4-55 for steps
required to remove engine
controller board cover. This
will allow access to DPCN.
Is cable properly
connected?
Go to step 3. Properly connect
cable. If problem
persists, go to
step 3.
3 Disconnect cable and
check for continuity
between DPCN connector
and duplex connector
located on back of printer.
Is there continuity?
Replace engine
controller board.
See Engine
controller
board removal
on page 4-55.
Replace faulty
cable.