TASKalfa 3500i - C6020;C6220 Fuser Thermistor High Temp; Check engine firmware version

C6020/C6220（Abnormal high temperature detected by Fuser thermistor）
Check whether the version of engine firmware is [2LF_1000.003.083]or after.
Version up firmware
N
G
O
K
OK
N
G
O
K
YC26
C6020
C6220
302H746191
If C6020/C6220 occurs, take the following measure.
Check the poor connection on the engine PCB YC26
OK
OK
Check the poor connection between the fuser unit and main unit connection part.
NG
OK
Replace Fuser unit
Replace the engine PCB OK
OK NG
OK NG
OK
Replace the harness between the engine PCB and Fuser unit.
OK NG
OK
OK
For 3500i/4500i/5500i
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