Sharp AR-810 Imager, Service Handbook

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AR-651/810 PREVENTIVE MAINTENANCE 4 - 14
*7 Cleaner Unit / Image quality sensor / Drum shaft bearing
Be sure to connect the ground lead to the aluminum die cast on the rear of the cleaner (exit side) before
you clean the cleaner unit. Then clean the unit with, for example, a vacuum cleaner.
(If the cleaner unit is not grounded, static electricity may damage the image quality sensor.)
Also wipe the window of the image quality sensor with a cotton wool bud or tissue.
(If the window of the image quality sensor is dirty, the sensor may no longer function properly.)
*5 Drive gears in the paper feeding section (teeth face and shafts)
Apply some white molycote to the teeth faces and shafts of the drive gears.
Note: Make sure that oil is not running over or scattered around as the gear is rotated coming into the clutch
after applying molycote to the gear which is located near the clutch. The quantity of molycote should be
smaller than that to be applied to the other parts.
*6 Main charger case/main charger wire
Clean the main charger case and wire with a cloth soaked in water and squeezed tightly, and then wipe
them with a dry cloth.
Note: Be careful of the following when attaching a new wire (length: 363mm).
• Insert the wire securely into the V-grooves of the front and rear sides.
• Do not twist the wire.
• Do not touch the wire with your bare hand.
Next, wipe the inner diameter of the drum shaft
bearing with a cloth.
(If toner adheres to the inner diameter, you may
no longer be able to draw out the drum shaft.)
Image quality sensor
Connected to earth
Drum shaft
bearing