2NP
1-4-75
1-4-3 Image quality problems
If the part causing the problem is not designated as a service part, replace with the assembly comprising the
part.
(1) No image
appears (entirely
white).
(2) No image
appears (entirely
black).
(3) Image is too
light.
(4) The back-
ground is col-
ored.
(5) White streaks
are printed verti-
cally.
See page 1-4-76
See page 1-4-76
See page 1-4-77
See page 1-4-77
See page 1-4-77
(6) Black streaks
are printed verti-
cally.
(7) Streaks are
printed horizon-
tally.
(8) One side of the
print image is
darker than the
other.
(9) Spots are
printed.
(10)Image is
blurred.
See page 1-4-78
See page 1-4-78
See page 1-4-78
See page 1-4-79
See page 1-4-79
(11) The leading
edge of the
image is con-
sistently mis-
aligned with the
original.
(12)The leading
edge of the
image is spo-
radically mis-
aligned with the
original.
(13)Paper is wrin-
kled.
(14)Offset occurs.
(15)Part of image is
missing.
See page 1-4-79
See page 1-4-79
See page 1-4-80
See page 1-4-80
See page 1-4-80
(16)Fusing is loose. (17)Image is out of
focus.
(18)Image center
does not align
with the original
center.
See page 1-4-80
See page 1-4-81
See page 1-4-81
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 ...