Diagnostic information 2-63
5021-0XX
985—Duplex connection error 1 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 ACN4 located on
low voltage power supply.
See “Engine controller
board removal” on
page 4-55 for steps
required to remove engine
controller board cover. This
will allow access to ACN4.
Is cable properly
connected?
Go to step 3. Properly connect
cable. If problem
persists, go to
step 3.
3 Disconnect cable from
ANC4 and check for
continuity between ACN4
connector and duplex
connector located on back
of printer. Is there
continuity?
Replace low
voltage power
supply. See
“Low voltage
power supply
(LVPS) with
cage removal”
on page 4-60.
Replace faulty
cable.
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