2NP-5
1-4-77
(4) The background is colored.
(5) White streaks are printed vertically.
Print example
Causes
Check procedures/corrective measures
Defective
transfer
charger out-
put.
Defective connector 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.
High voltage PWB and engine PWB (YC6)
High voltage PWB sub and engine PWB (YC7)
Defective high voltage
PWB.
Replace the high voltage PWB.
(see page 1-5-45)
Defective high voltage PWB
sub.
Replace the high voltage PWB sub.
Defective engine PWB.
Replace the engine PWB (see page 1-5-39).
Insufficient toner.
If the display shows the message requesting
toner replenishment, replace the container.
Deteriorated toner.
Perform the drum refresh operation.
Print example
Causes
Check procedures/corrective measures
Defective
main
charger out-
put.
Defective connector 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.
High voltage PWB and engine PWB (YC6)
Defective high voltage
PWB.
Replace the high voltage PWB.
(see page 1-5-45)
Defective engine PWB.
Replace the engine PWB (see page 1-5-39).
Deteriorated toner.
Perform the drum refresh operation.
Print example
Causes
Check procedures/corrective measures
Foreign matter in the devel-
oper unit.
Check if the magnetic brush is formed uniformly. Replace
the developer unit if any foreign matter (see page 1-5-13).
Dirty shading plate.
Clean the shading plate.
Adhesion of soiling to transfer
belt.
Clean the transfer belt. Replace the intermadiate transfer
unit if it is extremely dirty (see page 1-5-16).
Adhesion of soiling to transfer
roller.
Clean the transfer roller. Replace the transfer roller unit if it
is extremely dirty (see page 1-5-16).
Dirty LSU dust shield glass.
Perform the LSU dust shield glass cleaning.
Содержание TASKalfa 2551ci
Страница 1: ...SERVICE MANUAL Published in September 2016 842NP11A 2NPSM06A Rev A TASKalfa 2551ci ...
Страница 10: ...This page is intentionally left blank ...
Страница 97: ...2NP 1 1 2 74 This page is intentionally left blank ...
Страница 259: ...2NP 1 3 162 U486 Details on the modes Figure 1 3 47 Item No Description ...
Страница 473: ...2NP 1 5 62 This page is intentionally left blank ...
Страница 496: ...2NP 2 1 21 Figure 2 1 25 Duplex conveying section block diagram EPWB DU_SW DU_CL_REM YC25 3 YC24 3 DUCL DUS ...
Страница 497: ...2NP 2 1 22 This page is intentionally left blank ...
Страница 544: ...2NP 2 3 37 2 3 5 IH PWB Figure 2 3 5 IH PWB silk screen diagram YC1 1 2 YC8 1 3 YC6 2 1 YC4 6 1 YC3 YC10 YC9 ...
Страница 555: ...2NP 2 3 48 This page is intentionally left blank ...
Страница 584: ...Installation Guide DP 770 B Document processor DP 772 Document processor Installation Guide ...
Страница 620: ...DP 773 Document processor Installation Guide ...
Страница 646: ...PF 791 500 x 2 Paper feeder Installation Guide ...
Страница 654: ...PF 810 3000 sheets deck Installation Guide ...
Страница 667: ...DF 770 D Document finisher Installation Guide ...
Страница 685: ...AK 740 Bridge unit Installation Guide ...
Страница 687: ...PH 7A C D Punch unit Installation Guide ...
Страница 708: ...DT 730 B Document tray Installation Guide ...
Страница 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 ...
Страница 711: ...FAX System W B Installation Guide ...