Control panel message Description Recommended action
50.2 FUSER ERROR The fuser has experienced a warm-up error. 1. Reinstall the fuser. Check the connector
(J50) between the fuser and the
product. Replace the cable or fuser if the
connector is damaged.
2. Reconnect the connectors (J138, J115)
of the DC controller PCA˙. Reconnect
connector (J60), on the power line
between the low voltage power supply
and the fuser.
3. If the problem persists, replace the
fuser. See
Fuser on page 200.
50.3 FUSER ERROR The fuser has experienced a high-
temperature error.
1. Reinstall the fuser. Check the connector
(J50) between the fuser and the
product. Replace the cable or fuser if the
connector is damaged.
2. If the problem persists, replace the
fuser. See
Fuser on page 200.
50.4 FUSER ERROR The fuser driver circuit has experienced an
error.
1. Check the power source. If a power
generator is used, improve the situation.
NOTE: If the product does not meet
the power requirement of 43 to 67Hz
frequency, the fuser temperature control
does not work, which causes a
malfunction.
2. Reconnect connector (J101) on the DC
controller PCA.
3. If the problem persists, replace the low-
voltage power supply. See
Low-voltage
power supply (LVPS) on page 273.
50.5 FUSER ERROR The fuser has experienced a type-mismatch
error.
1. Reinstall the fuser. Check the connector
(J50) between the fuser and the
product. Replace the cable or fuser if the
connector is damaged.
2. Reconnect the connector (J139) on the
DC controller PCA.
3. If the problem persists, replace the
fuser. See
Fuser on page 200.
50.7 FUSER ERROR The fuser has experienced a pressure
release mechanism error.
1. Reconnect the connectors (J117, J123)
on the DC controller PCA.
2. Run the sensor test to test the fuser
pressure-release sensor (H) SR7. If the
sensor is defective, replace the fuser.
See
Fuser on page 200.
Table 7-12 Control-panel messages (continued)
448 Chapter 7 Solve problems ENWW
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