e-STUDIO2008A/2508A/3008A/3508A/4508A/5008A © 2015 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE AND TROUBLESHOOTING
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[C443] [C445] Heater thermistor abnormality at power ON
[C447] The fusing temperature is 40 degrees C or lower
Classification Error content
Fuser unit related service call 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 item Measure
1. Check the power supply Check that the power supply voltage is normal.
2. Check the error status 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
3. Check the thermistors 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.
4. Check the heater 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.
5. Check the LGC board 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.
6. Clear the status counter 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.
Parts to be replaced Remark
LGC board
Thermistors
Heater lamp
Classification Error content
Fuser unit related service call The fusing temperature is 40 degrees C or lower.
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