Toshiba e-STUDIO556 Service Manual page 535

Multifunctional digital systems

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Drive gears in the paper feeding section (teeth face and shafts)

Apply some white grease (Molykote EM-30) to the teeth faces and shafts of the drive

Make sure that oil is not running over or scattered around as the gear is rotated coming into the

clutch after applying molykote to the gear which is located near the clutch. The quantity of

molykote should be smaller than that to be applied to the other parts.

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.

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.

Cleaner Unit / Image quality sensor

Be sure to connect the ground wire to an aluminum die cast to prevent the image quality

sensor from being damaged by static electricity before you clean the cleaner unit. Then

clean the unit with a vacuum cleaner.

Also wipe the window of the image quality sensor with cotton swabs or tissues after having

cleaned the cleaner unit. Do not use a vacuum cleaner for the sensor. Be sure to clean the

window of the image quality sensor since the sensor may not function properly if this

window is dirty.

Connected to earth

Drum cleaning blade / Drum cleaning brush

The edge of the blade is breakable and can be easily damaged by matters such as the

adherence of paper dust. Replace the cleaning blade and brush with new ones if poor

images are copied due to the damaged blade regardless of the number of copies which

have been made.

Recovery blade

Replace the recovery blade regardless the number of copies if the edge of the blade get

e-STUDIO556/656/756/856/557/657/757/857

Image quality sensor

PREVENTIVE MAINTENANCE (PM)