2NP
1-4-44
6990
Fuser unit type mismatch
problem
Absence of the fuser unit is
detected.
Defective PWB.
Replace the IH PWB and check for correct
operation (see page 1-5-57).
7101
Toner sensor K error
The sensor outputs are for 5
seconds, 23 or less, or 248
or more.
Defective Devel-
oper unit.
Replace the developer unit K
(see page 1-5-13).
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-39).
7102
Toner sensor C error
The sensor outputs are for 5
seconds, 23 or less, or 248
or more.
Defective Devel-
oper unit.
Replace the developer unit C
(see page 1-5-13).
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-39).
7103
Toner sensor M error
The sensor outputs are for 5
seconds, 23 or less, or 248
or more.
Defective Devel-
oper unit.
Replace the developer unit M
(see page 1-5-13).
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-39).
7104
Toner sensor Y error
The sensor outputs are for 5
seconds, 23 or less, or 248
or more.
Defective Devel-
oper unit.
Replace the developer unit Y
(see page 1-5-13).
Defective PWB.
Replace the engine PWB check for correct
operation (see page 1-5-39).
7401
Developer unit K type mis-
match error
Absence of the developer unit
K 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 K and drum connect PWB
(YC9)
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).
Code
Contents
Causes
Check procedures/
corrective measures
Содержание TASKalfa 2551ci
Страница 1: ...SERVICE MANUAL Published in September 2016 842NP11A 2NPSM06A Rev A TASKalfa 2551ci ...
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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 ...