2JZ/2JX/2JV/2H7-1
1-4-70
(7)
Loop fan motor or
paper conveying fan
motor 1/2 does not
operate.
1. Broken fan motor coil. Check for continuity across the coil. If none, replace the fan motor.
2. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective fan motor. Run maintenance item U037 and check if the fan motor operates
when the following terminals on the PWB goes low. If not, replace
the corresponding fan motor.
40/40, 50/40 ppm model
Loop fan motor: YC14-A14 on the feed PWB
Paper conveying fan motor 1: YC14-B3 on the feed PWB
Paper conveying fan motor 2: YC14-B5 on the feed PWB
25/25, 30/30 ppm model
Loop fan motor: YC15-10 on the feed PWB
Paper conveying fan motor 1: YC14-1 on the feed PWB
Paper conveying fan motor 2: YC14-3 on the feed PWB
4. Defective feed PWB. Run maintenance item U037 and check if following terminals on
the feed PWB goes low. If not, replace the feed PWB.
40/40, 50/40 ppm model
Loop fan motor: YC14-A14 on the feed PWB
Paper conveying fan motor 1: YC14-B3 on the feed PWB
Paper conveying fan motor 2: YC14-B5 on the feed PWB
25/25, 30/30 ppm model
Loop fan motor: YC15-10 on the feed PWB
Paper conveying fan motor 1: YC14-1 on the feed PWB
Paper conveying fan motor 2: YC14-3 on the feed PWB
5. Defective engine PWB. Run maintenance item U037 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
Loop fan motor: YC20-A2 on the engine PWB
Paper conveying fan motor 1/2: YC20-B14 on the engine PWB
(8)
Scanner fan motor
does not operate.
1. Broken fan motor coil. Check for continuity across the coil. If none, replace the fan motor.
2. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective fan motor. Run maintenance item U037 and check if the fan motor operates
when the following terminals on the PWB goes low. If not, replace
the corresponding fan motor.
Scanner fan motor: YC3-2 on the ISM PWB
4. Defective ISC PWB. Run maintenance item U037 and check if following terminals on
the ISC PWB goes high. If not, replace the ISC PWB.
Scanner fan motor: YC3-24 on the ISC PWB
5. Defective ISM PWB. Run maintenance item U037 and check if following terminals on
the ISM PWB goes low. If not, replace the ISM PWB.
Scanner fan motor: YC3-2 on the ISM PWB
(9)
Main fan motor or
developing fan motor
3/4 does not operate.
1. Broken fan motor coil. Check for continuity across the coil. If none, replace the fan motor.
2. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
(10)
Middle motor, scan-
ner motor or transfer
motor does not oper-
ate.
1. Broken fan motor coil. Check for continuity across the coil. If none, replace the fan motor.
2. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Problem Causes Check procedures/corrective measures
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