Sharp JX-8200 Service Manual page 38

SHARP SERVICE MANUAL JX8200SM [6] EXTERNAL VIEW AND INTERNAL STRUCTURE
G. Paper hold/transfer section
3
4
1
12
11
27
10
9
No. Part name
1 Paper hold/transfer section lock release
lever
2 Fusing unit connector
3 Discharge lamp
4 Fan motor
5 Transfer drum tension spring
6 Transfer drum bearing (electrode)
(conductor)
7 Transfer drum home position sensor
8 Transfer drum
9 Transparent sheet sensor (OHP IN)
10 Paper pass detector 1 (HF IN)
(manual paper feed detector)
11 Relay PWB
12 Image density sensor
13 Ozone filter
14 Fusing unit drive motor
15 Cleaner clutch solenoid
16 Cleaner clutch
17 Cleaner brush clutch
18 Separation solenoid
19 Cleaning brush
20 Waste toner transport screw
21 Toner shutter
22 Cleaning blade
23 Separation pawl
24 Discharger unit
25 High voltage PWB for Discharger
26 Paper Jam detector (separation section) Detects paper jams in the paper separation section.
27 Paper Jam detector (cleaner section)
13
2
26
6
5
8
7
1
Releases the paper hold cover lock. (This cover is opened when replacing consumable parts.)
Connects the fusing unit with the PCU PWB and the high voltage PWB.
Discharges the OPC drum.
Discharge the ozone. Cooling the fusing unit.
Presses the transfer drum onto the OPC drum at a constant tension to keep a constant distance
between the transfer drum and the OPC drum.
Holds the transfer drum. The transfer voltage is applied to this bearing.
Detects the transfer drum home position.
Each control timing is determined according to this sensor signal (as the reference).
Fixes the paper with electrostatic force and transfers toner images on the OPC drum to the paper.
Detects OHP paper.
Detects paper setting in the manual paper feed mode, and detects paper transport and jam when
paper is fed from the cassette.
Interfaces each sensor and the operation PWB and PCU PWB.
Detects the toner patch image density in the print (process) correction. Also detects paper jams.
Absorbs ozone generated in the high voltage discharging.
Drives the fusing unit and the transfer drum cleaner.
Controls on/off of the cleaner clutch.
Controls on/off (contact and separation with/from the transfer drum) of the cleaner unit. Driven by
the fusing motor.
Controls on/off of the cleaner brush. Turns on/off the connection between the fusing motor and
the cleaning brush.
Drives the separation pawl.
Removes residual toner and foreign materials from the transfer drum.
Transports removed toner to the waste toner bottle.
Closed the toner discharge port to prevent against toner leakage when the paper hold section is
opened. The toner discharge port is opened when the paper hold section is closed.
Removes toner and foreign materials from the transfer drum.
Separates paper mechanically which is attached onto the transfer drum.
Discharges the transfer drum surface.
Supplies a high voltage to the discharger.
Detects paper which is rolled into the cleaner (paper jam).
16
17
Function, operation
6 – 11
14
15
16
17
25
18
24
19
20
21
22
23