Read Sharp AR-651 (serv.man16) Service Manual online
AR-651/810 TRANSFER/TRANSPORT UNIT 13 - 3
(8) Belt transport unit lock/unlock mechanism
The belt transport unit is locked inside the copier. It is structured in such a way that it is locked when
a paper jam is cleared, and can be drawn out towards you.
The belt transport unit has a function for separating the transfer belt from the drum and a function for
preventing erroneous operation of the handle when it is drawn out.
•
When the handle is rotated clockwise when viewed from the front, the belt transport unit can be
drawn out horizontally.
•
When the belt transport unit is inserted into the copier and the handle is rotated in counterclockwise
as seen from the front, the unit (at the vertical position) is locked.
•
If the belt transport unit is not completely inserted into the copier, the handle cannot be rotated from
the horizontal position.
(9) Damp heater (for preventing condensation)
The damp heater is located under the transfer belt, and is powered when the main power switch is
turned OFF.
Standard accessories: TWD, SAD, ASD, AUD
Options: Other than the above
(10) Transfer belt drive unit
Drive is transferred from the transfer belt motor, travels via the timing belt and the relay gears, and is
transmitted to the transfer belt drive gear to rotate the drive roller. Drive is transmitted to the belt
transport unit via a gear having a planetary joint.
(11) Transfer belt contact/release mechanism
This mechanism has two functions: separating the transfer belt from the photoconductive drum when a
jam occurs and bringing the transfer belt in touch with it when copying is started.
•
The rotation of cam by a driving force, which has been transmitted by the gear from the cam motor,
makes the rear side lever in the transfer belt move up and down.
•
The transfer belt is separated from/brought in touch with the photoconductive drum by handling the
lever vertically.
•
The cam phases are controlled by two sensors.
(12) Duplex printing transport section
When carrying out a duplex printing, reversed paper goes through this section.
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