Utax P-4532DN - Page 217

7-39
Troubleshooting ＞ Self-diagnostic function
[CONFIDENTIAL]
6020 Abnormally high fuser thermistor 2
temperature
The detection temperature of fuser
thermistor 2 is higher than 235°C/
455°F.
In a heater-off state, the detection
temperature of fuser thermistor 2 is
higher than 195°C/383°F after the
detection temperature of fuser
thermistor 2 was 155°C/311°F or
less.
Deformed connector
pin.
See page 7-39.
Defective triac. See page 7-39
.
Shorted fuser
thermistor.
Replace the fuser unit.
Defective engine PWB. Replace the engine PWB and check for correct
operation.
6030 Broken fuser thermistor 2 wire
A/D value of the fuser thermistor 2
exceeds 1019 bit continuously for 4 s
during warming up.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
Fuser thermistor and fuser thermistor connect
PWB(YC2)
Fuser thermistor connect PWB(YC3) and engine PWB
(YC21)
Deformed connector
pin.
See page 7-39
.
Defective triac. See page 7-39
.
Defective fuser
thermistor.
Replace the fuser unit.
Defective engine PWB. Replace the engine PWB and check for correct
operation.
6000/
6020/
6030/
6120/
6130/
Combine
d
Broken fuser heater wire
Abnormally high fuser thermistor 2
temperature
Broken fuser thermistor 2 wire
Abnormally high fuser thermistor 1
temperature
Broken fuser thermistor 1 wire
Deformed connector
pin.
If the I/F connector pins of the fuser unit and the main
unit are deformed owing to foreign matters, replace the
connectors or the units including the connectors.
Defective triac. Remove the power cord and check that the resistance
between terminals T1 and T2 of the triac TRA31 and
triac TRA41 are of several Mega-Ohms and not
shorted.
If failed, replace the power source PWB.
Code Contents Causes Check procedures/
corrective measures
T1
T2
TRA41
TRA31
Power source PWB