2KJ/2KH
1-4-22
C6000
Fuser heater break
The temperature does not reach 70
°
C/
158
°
F in 15 s before secondary stabiliza-
tion.
Temperature rise of 1
°
C/1.8
°
F does not
occur in 5 s before secondary stabiliza-
tion (except during printing).
Poor contact in the
fuser thermistor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Fuser thermistor
installed incor-
rectly.
Check and reinstall if necessary.
Fuser thermostat
triggered.
Check for continuity. If none, replace the
fuser thermostat.
Fuser heater
installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater wire.
Check for continuity. If none, replace the
fuser heater.
C6020
Abnormally high fuser thermistor
temperature
Fuser thermistor is detected 230
°
C/
446
°
F or more for 40 ms.
Shorted thermistor. Measure the resistance. If it is 0
Ω
, replace
the thermistor.
Broken heater con-
trol circuit on the
power source
PWB.
Replace the power source PWB and check
for correct operation.
C6050
Abnormally low fuser thermistor tem-
perature
Fuser thermistor remains below 90
°
C/
194
°
F for 1 s.
Poor contact in the
fuser thermistor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Broken fuser ther-
mistor wire.
Measure the resistance. If it is
∞
Ω
, replace
the fixing thermistor.
Fuser thermistor
installed incor-
rectly.
Check and reinstall if necessary.
Fuser thermostat
triggered.
Check for continuity. If none, replace the
fuser thermostat.
Fuser heater
installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater wire.
Check for continuity. If none, replace the
fuser heater.
C6400
Zero-cross signal error
Interrupt of the zero-cross signal does
not occur more than 1 s.
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective power
source PWB.
Check if the zero-crossing signal is output
from YC2-2 on the power source PWB. If
not, replace the power source PWB.
Defective engine
PWB.
Replace the engine PWB if C6400 is
detected while YC2-2 on the power source
PWB outputs the zero-crossing signal.
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Summary of Contents for TASKalfa 181
Page 1: ...SERVICE MANUAL Published in October 2009 842KJ112 2KJSM062 Rev 2 TASKalfa 181 TASKalfa 221 ...
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Page 10: ...This page is intentionally left blank ...
Page 14: ...2KJ 2KH This page is intentionally left blank ...
Page 114: ...2KJ 2KH 1 3 74 This page is intentionally left blank ...
Page 152: ...2KJ 2KH 1 4 38 This page is intentionally left blank ...
Page 292: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Page 306: ...INSTALLATION GUIDE FOR DUPLEX UNIT ...
Page 315: ...INSTALLATION GUIDE FOR BUILT IN FINISHER ...
Page 327: ...INSTALLATION GUIDE FOR JOB SEPARATOR ...
Page 336: ...INSTALLATION GUIDE FOR FAX System R ...
Page 351: ...INSTALLATION GUIDE FOR Scan System F B ...
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