2KA
1-4-42
C7401 Developing unit K type mismatch
problem
Absence of the developing unit K is
detected.
Developing unit
connector inserted
incorrectly.
Reinsert the developing unit connector if
necessary.
Different type of
the developing unit
is installed.
Install the correct developing unit.
C7402 Developing unit C type mismatch
problem
Absence of the developing unit C is
detected.
Developing unit
connector inserted
incorrectly.
Reinsert the developing unit connector if
necessary.
Different type of
the developing unit
is installed.
Install the correct developing unit.
C7403 Developing unit M type mismatch
problem
Absence of the developing unit M is
detected.
Developing unit
connector inserted
incorrectly.
Reinsert the developing unit connector if
necessary.
Different type of
the developing unit
is installed.
Install the correct developing unit.
C7404 Developing unit Y type mismatch
problem
Absence of the developing unit Y is
detected.
Developing unit
connector inserted
incorrectly.
Reinsert the developing unit connector if
necessary.
Different type of
the developing unit
is installed.
Install the correct developing unit.
C7411 Drum unit K type mismatch problem
Absence of the drum unit K is detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit.
C7412 Drum unit C type mismatch problem
Absence of the drum unit C is detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit.
C7413 Drum unit M type mismatch problem
Absence of the drum unit M is detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit.
C7414 Drum unit Y type mismatch problem
Absence of the drum unit Y is detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit.
Code Contents
Remarks
Causes Check procedures/corrective measures