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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 1-5-51).
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 1-5-33).
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 1-5-33).
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 1-5-33).
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 1-5-33).
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
Y1
16
1
41-8
Se
r
vice Manual
Summary of Contents for d-Color MF2552 plus
Page 1: ...SERVICE MANUAL Multifuction Digital Copier d Color MF2552 plus Code Y116141 8...
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Page 24: ...Y116141 8 Service Manual...
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Page 298: ...2NP 1 3 212 This page is intentionally left blank Y116141 8 Service Manual...
Page 458: ...2NP 1 5 56 This page is intentionally left blank Y116141 8 Service Manual...
Page 482: ...2NP 2 1 22 This page is intentionally left blank Y116141 8 Service Manual...
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Page 569: ...Installation Guide DP 770 B Document processor DP 772 Document processor Installation Guide...
Page 605: ...DP 773 Document processor Installation Guide...
Page 631: ...PF 791 500 x 2 Paper feeder Installation Guide...
Page 639: ...PF 810 3000 sheets deck Installation Guide...
Page 652: ...DF 770 D Document finisher Installation Guide...
Page 670: ...AK 740 Bridge unit Installation Guide...
Page 672: ...PH 7A C D Punch unit Installation Guide...
Page 693: ...DT 730 B Document tray Installation Guide...
Page 695: ...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 696: ...FAX System W B Installation Guide...