2NP
1-4-85
(15)
Paper feed clutch 1
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.
Paper feed clutch 1 and engine PWB (YC25)
2. Defective clutch.
Replace the paper feed clutch 1.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(16)
Paper feed clutch 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.
Paper feed clutch 2 and engine PWB (YC28)
video PWB and main PWB
2. Defective clutch.
Replace the paper feed clutch 2.
3. Defective PWB.
Replace the engine PWB or the main PWB and check for
correct operation (see page 1-5-54, 1-5-37).
(17)
Mid clutch 1 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.
Mid clutch 1 and engine PWB (YC25)
2. Defective clutch.
Replace the mid clutch 1.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(18)
Mid clutch 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.
Mid clutch 2 and engine PWB (YC28)
2. Defective clutch.
Replace the mid clutch 2.
3. Defective PWB.
Replace the engine PWB or the main PWB and check for
correct operation (see page 1-5-54, 1-5-37).
(19)
Registration clutch
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.
Registration clutch and engine PWB (YC25)
2. Defective clutch.
Replace the registration clutch.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(20)
Duplex clutch 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.
Duplex clutch and engine PWB (YC25)
2. Defective clutch.
Replace the duplex clutch.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
Problem
Causes
Check procedures/corrective measures
Summary of Contents for TASKalfa 2551ci
Page 1: ...SERVICE MANUAL Published in September 2016 842NP11A 2NPSM06A Rev A TASKalfa 2551ci ...
Page 10: ...This page is intentionally left blank ...
Page 97: ...2NP 1 1 2 74 This page is intentionally left blank ...
Page 259: ...2NP 1 3 162 U486 Details on the modes Figure 1 3 47 Item No Description ...
Page 473: ...2NP 1 5 62 This page is intentionally left blank ...
Page 497: ...2NP 2 1 22 This page is intentionally left blank ...
Page 555: ...2NP 2 3 48 This page is intentionally left blank ...
Page 584: ...Installation Guide DP 770 B Document processor DP 772 Document processor Installation Guide ...
Page 620: ...DP 773 Document processor Installation Guide ...
Page 646: ...PF 791 500 x 2 Paper feeder Installation Guide ...
Page 654: ...PF 810 3000 sheets deck Installation Guide ...
Page 667: ...DF 770 D Document finisher Installation Guide ...
Page 685: ...AK 740 Bridge unit Installation Guide ...
Page 687: ...PH 7A C D Punch unit Installation Guide ...
Page 708: ...DT 730 B Document tray Installation Guide ...
Page 710: ...5 2013 5 302LC56750 01 H F G D D 6 4 3 7 E C D D M4 8 M4 8 M4 8 M4 8 ...
Page 711: ...FAX System W B Installation Guide ...