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Replacing Developer
The toner sensor is sensitive to both electrostatic discharge
(ESD) and positional adjustment. Do not touch the sensor with
your hand or jar it from its factory-set position. (See page 126.)
1. Turn the power switch OFF.
2. Open the printer upper doors. (See page 109.)
3. Prepare a large plastic bag in which to put the developing unit.
4. Remove the developing unit (see page 123) and place it in the
plastic bag, making sure it is still accessible.
IMPORTANT
When replacing developer in an existing developing unit, you
must empty and clean the unit before adding new developer
Do this every 150,000 pages.
5. Turn the toner cartridge knob counterclockwise until it stops,
then remove the cartridge from the developing unit.
5
4
3
Legend:
1)
Toner Cartridge
2)
Toner Cartridge Knob
3)
Cover
4)
Screws (3)
5)
Developing Unit
Replacing Developer
1
2
127
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