2KL/2KK
1-4-20
C6050
Abnormally low fuser thermistor tem-
perature
Fuser thermistor remains below 90
q
C/
194
q
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
f :
, 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 main/
engine PWB.
Replace the main/engine PWB if C6400 is
detected while YC2-2 on the power source
PWB outputs the zero-crossing signal.
C7800
Broken external thermistor wire
The thermistor output value is 0.5 V or
less.
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 humidity
sensor.
Replace the cassette PWB and check for
correct operation.
C7810
Short-circuited external thermistor
wire
The thermistor output value is 4.5 V or
more.
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 humidity
sensor.
Replace the cassette PWB and check for
correct operation.
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Service Manual Y110980-1
Summary of Contents for d-Copia 1800
Page 1: ...d Copia 1800 d Copia 2200 Digital Copier SERVICE MANUAL Code Y110980 1...
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Page 271: ...INSTALLATION GUIDE FOR PAPER FEEDER...
Page 285: ...INSTALLATION GUIDE FOR DUPLEX UNIT...
Page 294: ...INSTALLATION GUIDE FOR Printing System Z...
Page 297: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 09 2009 1ST EDITION 297 Y110980 1...