0420-Option Paper Feeder Pf-26 Communication Error; 0460-Option Duplexer Du-25 Communication Error - Kyocera Mita FS-6750 Service Manual

0420—Option paper feeder PF-26 communication error
Table 6. 7 0420 error
Meaning
Communication is unsuccess-
ful 10 times continuously
after communication between
the printer and the option
paper feeder PF-26 has been
performed successfully.
0460—Option duplexer DU-25 communication error
Table 6. 8 0460 error
Meaning
Communication is unsuccess-
ful 10 times continuously
after communication between
the printer and the option
duplexer DU-25 has been per-
formed successfully.
Suggested causes
• Defective engine board
(KP-904).
• Defective option paper
feeder PF-26.
• Defective harness
(S02450) between engine
board and option unit
interface connector.
• Improper installation
between printer and
option paper feeder.
• Improper insertion of a
connector between printer
and option paper feeder
PF-26 or between first
cassette and second cas-
sette of option paper
feeder PF-26.
• Defective duplexer DU-25
in installation of option
duplexer DU-25
Suggested causes
• Defective engine board
(KP-904)
• Defective option duplexer
DU-25
• Defective harness
(S02450) between engine
board and option unit
interface connector.
• Improper insertion of a
connector between printer
and option duplexer DU-
25.
• Defective paper feeder
PF-26 in installation of
option paper feeder PF-
26.
6-12
Troubleshooting
Diagnostic
Corrective action
Replace the engine board
(KP-904).
Replace paper feeder PF-26.
Replace harness (S02450).
Follow installation instruc-
tion carefully again.
Remedy.
Replace option duplexer DU-
25.
Corrective action
Replace the engine board
(KP-904).
Replace duplexer DU-25.
Replace harness (S02450).
Remedy.
Replace option paper feeder
PF-26.
FS-6750