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Code
Contents
Drum unit Y type mismatch
7414
problem
Absence of the drum unit Y is
detected.
Transfer belt unit type mis-
7420
match problem
Absence of the transfer belt
unit is detected.
7601
ID sensor 1 (front) error
7602
ID sensor 2 (rear) error
7611
ID sensor (K) density error
When the concentration in a
bias calibration is unusual.
7612
ID sensor (C) density error
When the concentration in a
bias calibration is unusual.
7613
ID sensor (M) density error
When the concentration in a
bias calibration is unusual.
7614
ID sensor (Y) density error
When the concentration in a
bias calibration is unusual.
7620
ID sensor timing error
Color registration correction
was failed.
Service Manual
Causes
Drum unit connec-
Reinsert the drum unit Y connector if neces-
tor inserted incor-
sary.
rectly.
Different type of
Install the correct drum unit
the drum unit is
(see page 1-5-15).
installed.
Transfer belt unit
Reinsert the transfer belt unit connector if
connector inserted
necessary.
incorrectly.
Different type of
Install the correct transfer belt unit
the transfer belt
(see page 1-5-16).
unit is installed.
Defective ID sen-
Replace the ID sensor 1.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor 2.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
Defective ID sen-
Replace the ID sensor.
sor.
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-33).
1-4-46
Check procedures/
corrective measures
2NP
Y116141-8
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