2MN/2N1
1-4-94
(9)
Developer fan
motor 1, 2 does not
operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Developer fan motor 1, 2 and front PWB (YC6)
Front PWB (YC3) and engine PWB (YC7)
2. Defective motor. Replace the developer fan motor 1 or 2.
3. Defective PWB. Replace the front PWB or engine PWB and check for cor-
rect operation (see page 1-5-49).
(10)
Exhaust fan motor
1, 2 does not oper-
ate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Exhaust fan motor 1, 2 and engine PWB (YC19)
2. Defective motor. Replace the exhaust fan motor 1 or 2.
3. Defective PWB. Replace the engine PWB and check for correct operation
(see page 1-5-49).
(11)
LSU fan motor
does not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
LSU fan motor and front PWB (YC16)
Front PWB (YC2) and engine PWB (YC10)
2. Defective motor. Replace the LSU fan motor.
3. Defective PWB. Replace the front PWB or engine PWB and check for cor-
rect operation (see page 1-5-49).
(12)
Belt fan motor 1, 2
does not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Belt fan motor 1, 2 and engine PWB (YC19)
2. Defective motor. Replace the belt fan motor 1 or 2.
3. Defective PWB. Replace the engine PWB and check for correct operation
(see page 1-5-49).
(13)
Fuser fan motor 1,
2 does not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Fuser fan motor 1, 2 and relay PWB (YC16)
Relay PWB (YC13) and feed PWB 1 (YC23)
Feed PWB 1 (YC2) and engine PWB (YC5)
2. Defective motor. Replace the fuser fan motor 1 or 2.
3. Defective PWB. Replace the relay PWB, feed PWB 1 or engine PWB and
check for correct operation (see page 1-5-49).
(14)
Eject fan motor 1,
2 does not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Eject fan motor 1, 2 and relay PWB (YC11)
Relay PWB (YC13) and feed PWB 1 (YC23)
Feed PWB 1 (YC2) and engine PWB (YC5)
2. Defective motor. Replace the eject fan motor 1 or 2.
3. Defective PWB. Replace the relay PWB, feed PWB 1 or engine PWB and
check for correct operation (see page 1-5-49).
Problem Causes Check procedures/corrective measures
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