C1: Duplex Communication Error; C2: Duplex Printing Registration Error; C3: Void; C4: Document Finisher Ipc Communication Error - Mita DP-2800 Service Manual

C1: Duplex communication error

Meaning
Communication error
between the duplexer
and the printer.

C2: Duplex printing registration error

Meaning
The duplexer's regis-
tration boards are not
in the home position.

C3: Void

C4: Document finisher IPC communication error

Meaning
Communication error
with the document
finisher
Suggested causes
• Defective engine gate array (U6)
• Defective engine CPU (U1)
• Duplexer CPU (U1) malfunction
• Defective U2, U5, U6 on duplexer
board
• Defective connection between
KP-544 (YC4) and KP-568 (YC1),
KP-568 (YC3)
connector, liaison connector and
KP-587 (YC1), or defective liaison
connector
Suggested causes
• Defective registration motor
• Defective home position sensor
• Malfunctioning motor driving circuit
(U2/U6/U7) on duplexer board
• Defective duplxer CPU (U1)
• Connection error between the
registration motor and KP-587
(YC5), or home position sensor
and KP-587 (YC7)
Suggested causes
• Defective IPC (intelligent protocol
controller) LSI (communication
chip)
• Defective interface connector/cable
Try reinstalling duplexer.
Check/replace cable
between printer and
duplexer. Replace KP-
587. Replace KP-544.
Replace
Replace KP-568.
and liaison
Check foreign objects or
fractions of paper in
duplexer. Try manipu-
lating adjusters to check
for smooth move. Check
photo sensor for normal
connection.
replace S02100 cable.
Replace home position
sensor. Replace KP-587.
Replace duplexer.
Check interface cable
between document fin-
isher
Replace KP-544 (engine)
or KP-568 (CON3) in the
printer. Replace S02053
cable.
5A2
Corrective action
duplexer.
Corrective action
Check/
Corrective action
and printer.
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