Kyocera TASKalfa 4500i Service Manual page 341

Code Contents
6020 Abnormally high fuser
thermistor 1 temperature
Fuser thermistor 1 detects a
temperature higher than
240C/464F for 1 s.
6030 Broken fuser thermistor 1
wire
A temperature of less than
30°C/86F was observed at
the fuser thermistor 2 when
the temperature at the fuser
thermistor 1 is greater than
70°C/158F during warming
up.
Fuser thermistor 1 detects a
temperature lower than 50C/
122F for 15 s during warming
up.
6040 Fuser heater error
The state of the CPU port
PH1 at H level for 1 [sec] is
determined to be a loose con-
nector in any operation state.
Causes
Deformed connec- See page 1-4-40.
tor pin.
Defective triac. See page 1-4-40.
Shorted fuser Replace the fuser unit (see page 1-5-39).
thermistor 1.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-47).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Fuser unit and engine PWB (YC26)
Deformed connec- See page 1-4-40.
tor pin.
Defective triac. See page 1-4-40.
Broken fuser Replace the fuser unit (see page 1-5-39).
thermistor 1 wire.
Fuser thermostat Replace the fuser unit (see page 1-5-39).
triggered.
Defective fuser Replace the fuser unit (see page 1-5-39).
heater.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-47).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Fuser unit and engine PWB (YC26)
Deformed connec- See page 1-4-40.
tor pin.
Defective triac. See page 1-4-40.
Broken fuser Replace the fuser unit (see page 1-5-39).
thermistor 1 wire.
Defective fuser Replace the fuser unit (see page 1-5-39).
heater.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-47).
1-4-37
2LL/2LJ/2LH-1
Check procedures/
corrective measures