2KZ/2K0
1-4-29
7004 Toner motor Y error
When the toner motor Y is
driven, error signal is detected
continuously for 1 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Toner motor Y and engine PWB(YC8)
Defective drive
transmission sys-
tem.
Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective motor. Replace the toner motor Y.
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
7101
Toner sensor K error
Defective Devel-
oper unit.
Replace the developer unit K
(see page 1-5-14).
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
7102
Toner sensor C error
Defective Devel-
oper unit.
Replace the developer unit C
(see page 1-5-14).
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
7103
Toner sensor M error
Defective Devel-
oper unit.
Replace the developer unit M
(see page 1-5-14).
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
7104
Toner sensor Y error
Defective Devel-
oper unit.
Replace the developer unit Y
(see page 1-5-14).
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
7401
Developing unit K type mis-
match 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.
Defective PWB. Replace the engine PWB check for correct
operation (see page 1-5-31).
Code Contents Causes
Check procedures/
corrective measures
Y113010-4 Sevice Manual
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