2KZ/2K0
1-4-22
4700
VIDEO ASIC device error
Mismatch of reading data from
two locations occurs eight
times successively.
Mismatch between writing
data and reading data occurs
eight times successively.
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.
Main PWB (YC105) and engine PWB
(YC17)
Defective main
PWB or engine
PWB.
Replace the main PWB or the engine PWB
and check for correct operation
(see page 1-5-30, 1-5-31).
4950
LSU CPU communication
error
A communication error is
detected 10 times in succes-
sion.
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.
Main PWB and engine PWB (YC26)
Defective PWB.
Replace the main PWB or engine PWB and
check for correct operation
(see page 1-5-30, 1-5-31).
6000
Broken fuser heater wire
Fuser thermistor 2 does not
reach 100° C/212 °F even
after20 s during warming up.
The detected temperature of
fuser thermistor2 does not
reach the specified tempera-
ture (ready indication temper-
ature) for 20 s in warming up
after reached to 100° C/
212 °F.
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.
IH coil unit and IHPWB
IHPWB and engine PWB (YC7)
Deformed connec-
tor pin.
If the I/F connector pins of the fuser unit and
the main unit are deformed owing to foreign
matters, such as paper dusts, replace the
connectors or the units including the con-
nectors.
Defective IH PWB. Replace the IH PWB and check for correct
operation (see page 1-5-35).
Fuser thermostat
triggered.
Reinsert the fuser unit (see page 1-5-18).
Broken fuser
heater wire.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-31).
6020
Abnormally high fuser
thermistor 2 (center) tem-
perature
The fuser thermistor 2 detects
a temperature higher than
240°C/464°F continuously for
1 s.
Deformed connec-
tor pin.
If the I/F connector pins of the fuser unit and
the main unit are deformed owing to foreign
matters, such as paper dusts, replace the
connectors or the units including the con-
nectors.
Shorted fuser
thermistor.
Replace the fuser unit (see page 1-5-18).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-31).
Code
Contents
Causes
Check procedures/
corrective measures
Service Manual Y113010-4