2RV/2RW/2RX/2RY/3RA-3
7-82
C6020: Thermopile high temperature error
1. The thermopile detected 200°C/392°F or more for 5s.
2. The thermopile detected 200°C/392°F or more for 0.5s when passing 1s or more after the drive stopped.
(however, at the emergency stop, the relay circuit is used and this detection is not done.)
C6030: Broken thermopile
The thermopile AD value is abnormal.
C6050: Thermopile low temperature error
During stand-by or printing, the thermopile detected less than 100°C/212°F for 3s consecutively.
Step Check description Assumed cause Measures Reference
1 Checking the connection The connector is not prop-
erly connected or the wire
is faulty.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire.
• Thermopile - Main/engine
PWB (YC2)
2 Replacing the thermopile The thermopile is faulty. Replace the thermopile.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Removing a piece of paper A piece of paper resides in
the fuser unit and the ther-
mopile cannot detect tem-
perature properly.
Remove a piece of paper.
2 Checking the connection The connector is not prop-
erly connected or the wire
is faulty.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire.
• Thermopile - Main/engine
PWB (YC2)
3 Replacing the thermopile The thermopile is faulty. Replace the thermopile.
4 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Changing the external
power source
The power supply voltage
reduces.
Connect the power cord to a
different wall outlet if the
power supply voltage
descends by 10% or more of
the rated voltage, or multiple
devices use the same outlet.