Kyocera 300ci Service Manual page 290

2JZ/2JX/2JV/2H7
Problem
(11)
Paper feed clutch 1/
2, feed clutch 1/2,
registration clutch or
middle clutch does
not operate.
(12)
MP paper feed
clutch, MP paper
conveying clutch or
fuser clutch does not
operate.
(13)
The MP solenoid
does not operate.
(14)
The LSU cleaning
solenoid does not
operate.
1-4-72
Causes
1. Broken clutch coil.
2. Poor contact in the con-
nector terminals.
3. Defective feed PWB.
4. Defective engine PWB.
1. Broken clutch coil.
2. Poor contact in the con-
nector terminals.
3. Defective engine PWB.
1. Broken solenoid coil.
2. Poor contact in the con-
nector terminals.
3. Defective engine PWB.
1. Broken solenoid coil.
2. Poor contact in the con-
nector terminals.
3. Defective feed PWB.
4. Defective engine PWB.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace the clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if following terminals on
the feed PWB goes low. If not, replace the feed PWB.
40/40, 50/40 ppm model
Paper feed clutch 1: YC5-2 on the feed PWB
Paper feed clutch 2: YC1-2 on the feed PWB
Feed clutch 1: YC13-3 on the feed PWB
Feed clutch 2: YC13-1 on the feed PWB
25/25, 30/30 ppm model
Paper feed clutch 1: YC5-2 on the feed PWB
Paper feed clutch 2: YC1-2 on the feed PWB
Registration clutch: YC13-3 on the feed PWB
Middle clutch: YC13-1 on the feed PWB
Run maintenance item U032 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
40/40, 50/40 ppm model
Paper feed clutch 1: YC20-B2 on the engine PWB
Paper feed clutch 2: YC20-A8 on the engine PWB
Feed clutch 1: YC20-B8 on the engine PWB
Feed clutch 2: YC20-B7 on the engine PWB
25/25, 30/30 ppm model
Paper feed clutch 1: YC20-B2 on the engine PWB
Paper feed clutch 2: YC20-A8 on the engine PWB
Registration clutch: YC20-B8 on the engine PWB
Middle clutch: YC20-B7 on the engine PWB
Check for continuity across the coil. If none, replace the clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
MP paper feed clutch: YC23-20 on the engine PWB
MP paper conveying clutch: YC10-B18 on the engine PWB
Fuser clutch: YC25-B10 on the engine PWB
Check for continuity across the coil. If none, replace the MP sole-
noid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U033 and check if the solenoid operates. If
not, replace the engine PWB.
Check for continuity across the coil. If none, replace the LSU
cleaning solenoid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U474 and check if the solenoid operates. If
not, replace the feed PWB.
Run maintenance item U474 and check if the solenoid operates. If
not, replace the engine PWB.