2K5
1-4-27
C6020
Abnormally high fuser thermistor
center temperature
Fuser thermistor 2 is detected 230
°
C/
446
°
F or more for 40 ms.
Installation defec-
tiveness on fuser
thermistor 2.
Check the mounting state of the fuser ther-
mistor 2. If any problem is found, repair it.
Defective fuser
thermistor 2.
Replace the fuser thermistor 2.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C6050
Abnormally low fuser thermistor cen-
ter temperature
Fuser thermistor 1 is detected 100
°
C/
212
°
F less then 1 s continuously during
copying.
Defective fuser
heater 1 or 2.
Replace the fuser heater 1 or 2.
Installation defec-
tiveness on fuser
thermistor 2.
Check the mounting state of the fuser ther-
mistor 2. If any problem is found, repair it.
Defective PWB.
Replace the power source PWB or engine
PWB and check for correct operation.
C6120
Abnormally high fuser thermistor
edge temperature
Fuser thermistor 1 is detected 240
°
C/
464
°
F or more for 40 ms.
Installation defec-
tiveness on fuser
thermistor 1.
Check the mounting state of the fuser ther-
mistor 1. If any problem is found, repair it.
Defective fuser
thermistor 1.
Replace the fuser thermistor 1.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C6150
Abnormally low fuser thermistor edge
temperature
Fuser thermistor 1 is detected 80
°
C/
176
°
F less than 1 s continuously during
copying.
Defective fuser
heater 1 or 2.
Replace the fuser heater 1 or 2.
Installation defec-
tiveness on fuser
thermistor 1.
Check the mounting state of the fuser ther-
mistor 1. If any problem is found, repair it.
Defective PWB.
Replace the power source PWB or engine
PWB and check for correct operation.
C6400
Zero-cross signal error
While fuser heater ON/OFF control is
performed, the zero-cross signal is not
input within 3 s.
Defective PWB.
Replace the power source PWB or engine
PWB and check for correct operation.
C6420
Fuser unit fuse cut problem
The fuse cannot be cut, When replacing
the fuser unit, the fuse cannot be cut in
3 s after the fuse cut signal is turned on.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC1 on
the engine PWB and the continuity across
the connector terminals. Repair or replace if
necessary.
Fuser unit connec-
tor inserted incor-
rectly.
Reinsert the fuser unit connector if neces-
sary.
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Summary of Contents for TASKALFA 300I
Page 1: ...SERVICE MANUAL Published in February 2010 842K5111 2K5SM061 Rev 1 TASKalfa 300i ...
Page 4: ...This page is intentionally left blank ...
Page 10: ...This page is intentionally left blank ...
Page 14: ...2K5 This page is intentionally left blank ...
Page 22: ...2K5 1 1 8 This page is intentionally left blank ...
Page 196: ...2K5 1 4 52 This page is intentionally left blank ...
Page 252: ...2K5 1 5 56 This page is intentionally left blank ...
Page 274: ...2K5 2 1 20 This page is intentionally left blank ...
Page 310: ...2K5 2 3 28 This page is intentionally left blank ...
Page 347: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Page 369: ...INSTALLATION GUIDE FOR BUILT IN FINISHER ...
Page 381: ...INSTALLATION GUIDE FOR JOB SEPARATOR ...
Page 391: ...INSTALLATION GUIDE FOR FAX System ...
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