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•
When securing the lock plate R with screw "d," be sure to use the plastic jig as shown below to
avoid damaging the edge of the FU lamp with a screwdriver.
FU lamp
•
A new heat-fixing unit will be provided with the heater thermistor harness being taped to the
unit. Before installing the unit, remove the tape.
•
When setting the heat-fixing unit back into place, make sure that the heater wires are routed
through the latch of the fan duct (see the illustration given on page IV-34) and then route the
long heater wire as shown below.
•
If you remove and reinstall the heat-fixing unit because of any failure, make the equipment
enter the maintenance mode (by pressing the Function/Menu, * 2, 8, 6, and 4 keys) after
completion of reassembly and then make it exit from the mode (by pressing the 9 key twice).
Otherwise, the heat-fixing unit may not become energized because of the following reason:
If the failure of the heat-fixing unit is caused by an opening of the thermistor circuit (that senses
the temperature of the heat-fixing unit), the system misinterprets the hot heater as being cold.
As a result, the temperature of the heat-fixing unit may become excessively high. To prevent
the system from heating the hot heater further at the next powering-on, it is designed so that
the heater will not be energized. To cancel this setting, you need to carry out the above
maintenance-mode procedure.
Lock plate R
IV - 33
"d"
Plastic jig
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Troubleshooting
