DEVELOPMENT
SM 6-89 B234/B235/B236/D101/D102/D103
Detailed
Descriptions
6.12.6 DEVELOPMENT UNIT TONER SUCTION
To ensure that the fine-grained toner does not scatter and blacken the interior of
the machine, a toner suction assembly reduces the pressure inside the
development unit.
Below the development unit [A] the toner suction pump [B], driven by the toner
suction motor [C], draws air out of the development unit along with any airborne
toner. The toner is sent to the toner suction bottle [D] on the right side of the
machine.
The toner suction motor switches on and off with the development motor.
The service life of both the toner suction bottle and toner suction motor are limited.
• The service life of the bottle is set with SP 2972 (‘near-full" is at 680 hours, and
‘full’ is at 720 hours – 3000K: A4 6%).
• The service life of the motor is set with SP 2973 (‘near-end’ is at 570 hours, and
‘end’ is at 600 hours).
When an end alert is issued for the toner suction motor, a message is displayed on
the copier LCD panel.
B234D943.WMF
[A]
[B]
[C]
[D]
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