2RV/2RW/2RX/2RY/3RA-3
7-84
C6220: Fuser edge thermistor high temperature error
1. While drive is stopped, the fuser edge thermistor detected 240°C/464°F or more.
2. During drive, the fuser edge thermistor detected 255°C/491°F or more.
C6230: Broken fuser edge thermistor
The fuser thermistor AD value is abnormal.
Step Check description Assumed cause Measures Reference
1 Reinstalling the fuser unit The fuser unit drawer con-
nector is not inserted com-
pletely.
Reinstall the fuser unit so that
the drawer connector is con-
nected securely.
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.
• Fuser unit - Main/engine
PWB (YC19)
3 Replacing the fuser unit The fuser edge thermistor
is faulty and cannot detect
correct temperature.
Replace the fuser unit.
4 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.
• Low voltage PWB (YC103)
- Main/engine PWB (YC20)
5 Replacing the low voltage
PWB.
The low voltage PWB is
faulty.
Replace the low voltage
PWB.
6 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Reinstalling the fuser unit The fuser unit drawer con-
nector is not inserted com-
pletely.
Reinstall the fuser unit so that
the drawer connector is con-
nected securely.
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.
• Fuser unit - Main/engine
PWB (YC19)
3 Replacing the fuser unit The fuser edge thermistor
is faulty and cannot detect
correct temperature.
Replace the fuser unit.
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