2MN/2N1-1
1-4-60
7102 Toner sensor C error
Sensor output value of 60 or
less or 944 or more continued
for 3 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 sensor C and front PWB (YC13)
Front PWB (YC2) and engine PWB (YC10)
Defective toner
sensor C.
Replace developer unit C (see page 1-5-29).
Failure of locking
the developer
waste slot at setup.
Check whether the developer waste slot has
been unlocked and unlock if necessary (see
page 1-2-14).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
7103 Toner sensor M error
Sensor output value of 60 or
less or 944 or more continued
for 3 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 sensor M and front PWB (YC11)
Front PWB (YC2) and engine PWB (YC10)
Defective toner
sensor M.
Replace developer unit M (see page 1-5-
29).
Failure of locking
the developer
waste slot at setup.
Check whether the developer waste slot has
been unlocked and unlock if necessary (see
page 1-2-14).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
7104 Toner sensor Y error
Sensor output value of 60 or
less or 944 or more continued
for 3 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 sensor Y and front PWB (YC15)
Front PWB (YC2) and engine PWB (YC10)
Defective toner
sensor Y.
Replace developer unit Y (see page 1-5-29).
Failure of locking
the developer
waste slot at setup.
Check whether the developer waste slot has
been unlocked and unlock if necessary (see
page 1-2-14).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
Code Contents Causes
Check procedures/
corrective measures