2NP
1-4-45
7402
Developer unit C type mis-
match error
Absence of the developer unit
C is detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Developer unit C and drum connect PWB
(YC7)
Drum connect PWB and engine PWB (YC4)
Different type of
the developer unit
is installed.
Install the correct developer unit
(see page 1-5-13).
7403
Developer unit M type mis-
match error
Absence of the developer unit
M is detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Developer unit M and drum connect PWB
(YC8)
Drum connect PWB and engine PWB (YC4)
Different type of
the developer unit
is installed.
Install the correct developer unit
(see page 1-5-13).
7404
Developer unit Y type mis-
match error
Absence of the developer unit
Y is detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Developer unit Y and drum connect PWB
(YC6)
Drum connect PWB and engine PWB (YC4)
Different type of
the developer unit
is installed.
Install the correct developer unit
(see page 1-5-13).
7411
Drum unit K type mismatch
problem
Absence of the drum unit K is
detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit K connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit
(see page 1-5-15).
7412
Drum unit C type mismatch
problem
Absence of the drum unit C is
detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit C connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit
(see page 1-5-15).
7413
Drum unit M type mismatch
problem
Absence of the drum unit M is
detected.
Drum unit connec-
tor inserted incor-
rectly.
Reinsert the drum unit M connector if neces-
sary.
Different type of
the drum unit is
installed.
Install the correct drum unit
(see page 1-5-15).
Code
Contents
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 ...