AR-810 (serv.man20). RADF (Document feeder) - Sharp Copying Equipment Service Manual (repair manual)

ar-810 (serv.man20) service manual
Model
AR-810 (serv.man20)
Pages
91
Size
3.35 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / RADF (Document feeder)
File
ar-810-sm20.pdf
Date

Read Sharp AR-810 (serv.man20) Service Manual online

AR-651/810  RADF (DOCUMENT FEEDER)  16 - 1
The Reversing Automatic Document Feeder (RADF) is a device that automatically feeds originals one
by one to the ADF original glass and discharges them to the receiving tray after scanning is finished.
RADF consists of the following sections.
• Original feeding section
This section, consisting of the pickup belt, feed roller, separation roller, registration roller, etc.,
feeds originals one by one to the ADF original glass.
• Original transporting/scanning section
        This section, consisting of the read roller, transport roller, etc., transports an original on the ADF
original glass and scans it at the same time.
• Original reverse/exit section
         This section, consisting of the exit roller, reverse flapper, reverse roller, etc., discharges an
original to either the large or small receiving tray after scanning is finished. When two-sided
scanning is carried out, the original is reversed by switching the reverse flapper and fed again to
the ADF original glass.
16.  RADF (DOCUMENT FEEDER)
16. 1.  General Description
Tray sensor
Feed roller
Registration roller
1st roller
2nd roller
3rd roller
4th roller
Read roller
Read sensor
Original width sensor
Empty sensor
Original length sensor
Large original exit sensor
Reverse flapper
Large original exit flapper
Small original exit flapper
Intermediate transport sensor
Intermediate transport roller 
Small original reverse roller
Pickup belt
Separation roller
Registration sensor
Large original
exit roller
Small original reverse flapper
Small original reverse sensor
Small original exit sensor
Small original exit roller
Note: Large-sized original: A3, B4, LD, LG
Small-sized original: A4, A4-R, B5, B5-R, A5-R, LT, LT-R, ST-R
AR-651/810  RADF (DOCUMENT FEEDER)  16 - 2
16. 2.  Construction
Original feeding tray
Jam access cover
Feeding/transporting section
Large original receiving section
Small original receiving section
Drive/control section
Apparatus
Electric parts
Feeding/transporting
• Jam access cover
• Empty sensor
section
• Pickup belt
• Upper limit sensor
• Feed roller
• Lower limit sensor
• Separation roller
• Cover open/close sensor
• Registration roller
• Original length sensor
• Read roller
• Registration sensor
• Exit/Reverse roller
• Original width sensor
• Intermediate transport roller
• Read sensor
• Small original reverse roller
• Intermediate transport sensor
• Small original exit roller
• Large original exit sensor
• Small original reverse sensor
• Small original exit sensor
Original feeding tray
• Original feeding tray
• Tray sensor
• Tray width sensor
Drive/control section
• Feed motor
• Tray lift motor
• Read motor
• Large original exit motor
• Disengagement solenoid
• Large original exit solenoid
• Small original exit solenoid
• RADF open/close sensor
• APS operation sensor
• Cover open/close switch
• RADF open/close switch
AR-651/810  RADF (DOCUMENT FEEDER)  16 - 3
16. 3.  Drive System
(1)  Feed motor rotating forward (seen in front)
(2)  Feed motor rotating in reverse (seen in front)
Feed motor rotates
clockwise to feed originals.
  Rear
Front
Registration roller
One-way pulley lock
One-way pulley idling
Feed motor
Feed motor rotates
counterclockwise to feed originals.
Rear
Front
One-way pulley lock
One-way pulley idling
AR-651/810  RADF (DOCUMENT FEEDER)  16 - 4
Intermediate
transport roller
(3)  Read motor rotating in reverse (seen in front)
Rear
Read motor
Read roller
Front
Large original
    exit roller
Large original exit motor
Read motor rotates
counterclockwise to
transport, scan and
discharge originals.
Large original exit motor
switches to the backside
of an original by rotating
clockwise and registers
that side.
(4)  large original exit motor rotating in reverse (seen in front)
 Large original exit roller
  Large original exit motor
Large original exit motor
rotates counterclockwise
to discharge and reverse
originals.
Small original exit motor
Small original exit motor
rotates clockwise to trans-
port and discharge originals.
Small original exit roller
Small original
reverse roller
Rear
Front
One-way pulley
Intermediate transport roller
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Here you can read online and download Sharp AR-810 (serv.man20) Service Manual in PDF. AR-810 (serv.man20) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp AR-810 (serv.man20) Copying Equipment. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.