Toshiba e-STUDIO520 Service Manual page 279
Multifunctional digital systems
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Also See for e-STUDIO520:
- Service handbook (650 pages) ,
- User functions manual (202 pages) ,
- Network administration manual (124 pages)
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Transfer/transport unit lock/unlock mechanism
The transfer/transport unit lock/release mechanism locks the unit in the equipment, and unlocks
it to draw the unit out to the front side when the paper jam is being cleared. The mechanism also
separates the transfer belt unit from the drum when the transfer/transport unit is drawn out. When
the unit is being drawn out, the mechanism can prevent the erroneous operation of the handle.
When the handle is turned clockwise (in a horizontal position), the unit can be drawn out. Insert
the transfer/transport unit into the equipment and turn the handle counterclockwise (in a vertical
position), so that the unit can be locked in. If the unit is not inserted completely, the handle can-
not be turned from the horizontal position.
(10) Transfer belt unit contact/release mechanism
When printing is completed or a paper jam has occurred, the mechanism releases the transfer
belt unit from the photoconductive drum. When printing is started, the mechanism contacts the
unit with the photoconductive drum.
The cam is rotated by the drive of the transfer belt cam motor (M15). Along with this rotation, the
lever on the rear side of the transfer/transport unit moves up and down, and thus the transfer belt
unit and the drum are contacted or released.
The phase of the cam is controlled by the transfer belt release detection sensor (S15) and the
transfer belt contact detection sensor (S16).
(11) Drum damp heater (DH3) (condensation prevention)
The drum damp heater (DH3) is installed under the transfer belt. The power is supplied to this
heater when the main switch (SW6) is turned OFF.
(12) Horizontal transport section
The paper reversed for duplex printing is transported to the horizontal transport section. At this
section, the paper is transported to the intermediate transport roller.
This section is driven by the fuser motor (M3) and controlled by the horizontal transport section
driving clutches-1 (CLT1), -2 (CLT2) and -3 (CLT3), and this drive is transmitted to the transport
roller. The horizontal transport sensors-1 (S19), -2 (S20) and -3 (S21) detect the paper transport.
March 2005 © TOSHIBA TEC
e-STUDIO520/600/720/850 TRANSFER/TRANSPORT UNIT
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