2NP
1-4-86
(21)
Developer stop
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.
Developer stop clutch and engine PWB (YC16)
2. Defective clutch.
Replace the developer stop clutch.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(22)
MP solenoid 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.
MP solenoid and engine PWB (YC25)
2. Defective solenoid.
Replace the MP solenoid.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(23)
Feedshift solenoid
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.
Feedshift solenoid and engine PWB (YC21)
2. Defective solenoid.
Replace the Feedshift solenoid.
3. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-39).
(24)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 1.
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 sensor 1/2 and engine connect PWB (YC7)
Engine connect PWB to engine PWB (YC4)
2. Deformed actuator of
the paper sensor.
Check visually and replace if necessary.
3. Defective paper sen-
sor.
Replace the paper sensor 1/2.
4. Defective PWB.
Replace the engine PWB or engine connect PWB and
check for correct operation (see page 1-5-39).
(25)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 2.
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 sensor 3/4 and engine PWB (YC27)
Video PWB to main PWB (YC9)
2. Deformed actuator of
the paper sensor.
Check visually and replace if necessary.
3. Defective paper sen-
sor.
Replace the paper sensor 3/4.
4. Defective PWB.
Replace the engine PWB or main PWB and check for cor-
rect operation (see page 1-5-54, 1-5-37).
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 ...