[C443] [C445] Heater Thermistor Abnormality At Power On; [C447] The Fusing Temperature Is 40 Degrees C Or Lower - Toshiba e-STUDIO206L Service Manual

[C443] [C445] Heater thermistor abnormality at power ON

Classification
Fuser unit related service call
Check item
1. Check the power supply
2. Check the error status
3. Check the thermistors
4. Check the heater
5. Check the LGC board
6. Clear the status counter
Parts to be replaced
LGC board
Thermistors
Heater lamp

[C447] The fusing temperature is 40 degrees C or lower

Classification
Fuser unit related service call
e-STUDIO206L/256/306/356/456/506 / 207L/257/307/357/457/507
ERROR CODE AND TROUBLESHOOTING
A thermistor abnormality is detected when the power is turned
ON.
The temperature of the fuser roller does not rise within a
specified period after the power is turned ON.
Check that the power supply voltage is normal.
1. Check the thermistors using the code values to find where
the problem is.
08-4570-0: Center thermistor
08-4570-1: Side thermistor
08-4570-2: Edge thermistor
08-4570-5: Error counter
1. Check if the connectors of the center, side or edge
thermistors are disconnected.
2. Check if the center, side and edge thermistors contact the
surface of the fuser roller properly.
3. Check if the center, side and edge thermistors are deformed
or dirty.
4. Check if the harnesses of the center, side and edge
thermistors are open circuited.
1. Check if the heater is broken. (Check that the heater is
conducted properly.)
2. Check if the connector of the heater is disconnected.
3. Check if the harnesses are connected properly to the
terminals of the heater lamp.
4. Check if the thermostat is blown.
1. Check if the connector CN309 is disconnected.
2. Check if the conductor pattern on the LGC board is open or
short circuited.
3. Replace the LGC board.
1. Change the value of the status counter (08-2002) to "0".
C443: "3" is written in 08-2002.
C445: "5" is written in 08-2002.
The fusing temperature is 40 degrees C or lower.
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