Sharp AR-D21 User manual

CODE : 00Z
qSERVICE MANUAL
CONTENTS
Parts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
SHARP CORPORATION This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
ARD22//A1E
Digital copier
: Paper feed unit
AR-D21
MODEL AR-D22
[1] GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[2] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[3] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 1
[4] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . 6
[5] OPERATION DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
[6] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 7
[7] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
[8] ELECTRICAL SECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1-Stage paper
feed unit
2-Stage paper
feed unit

AR-D21/D22 GENERAL
– 1 –
[1] GENERAL
The AR-D21 (1-stage paper feed unit) and the AR-D22 (2-stage paper
feed unit) are optional paper feed units added to the digital copier, and
their cassettes are common with those of the main machine.
[2] SPECIFICATIONS
1. Paper feed unit (AR-D21/AR-D22)
[3] UNPACKING AND INSTALLATION
1. Unpacking
2. Installation
PARTS INCLUDED
Remove all pieces of fixing tape and fixing materials from the paper
feed unit.
AR-D21 AR-D22
No. of stage 1-stage 2-stage
Capacity 550 pages x 1 stage
(Japan) 550 pages x 2 stages (Total 1,100pages)
(Japan)
500 pages x 1 stage
(EX) 500 pages x 2 stages (Total 1,000 pages)
(EX)
(Note) Japan: 64g/m2, EX: 80g/m2
Size detection No (The paper size is set with the user program.)
Paper empty
detection Provided
Paper feed
size A3, B4, A4, A4R, B5, B5R, 16k, 16kR, 8k, 11 x 17, 8.5 x 14, 8.5 x 13, 8.5 x 11, 8.5 x 11R
Size when
shipping AB series: A4
Inch series: 8.5 x 11
Size selection User selection (Set by the user program.)
A3, B4, A4, A4R, B5, B5R, 11 x 17, 8.5 x 14, 8.5 x 13,
8.5 x 11, 8.5 x 11R
Cassette
installation Installed by the user.
Heater Provided only for Japan.
Power source Supplied from the copier. DC24V.
Power
consumption 5.6W 8.4W
Drive supply
• When installed as the
2-stage cassette for the
2-stage cassette standard
model: Supplied via gears
from the copier.
• When installed as the
optional 2-stage or 3-
stage cassette:
Sup plied by the
individual motor.
Supplied by the
individual motor.
External
dimensions 596(W) x 498(D) x 97(H) mm 596(W) x 498(D) x 194(H)mm
Weight About 6.1kg About 11.8kg
AR-D21
AR-D22
Fixing plates: 4 pcs. Paper size labelScrews (M4 x 12): 8 pcs.
Cassette relay harness
(contained in the optional paper feed unit)

AR-D21/D22 UNPACKING AND INSTALLATION
– 2 –
Turn off the main switch of the copier and then remove the power
plug of the copier from the outlet.
1. Remove the rear cover from the copier.
Remove the two screws and then remove the rear cover from the
copier.
2. Remove the rear cover from the optional paper feed unit.
Remove the two screws and then remove the rear cover from the
optional paper feed unit.
3. Remove the connector cover.
Remove the cover from the connector.
4. Attach the copier
Place the copier on the optional paper feed unit and remove the second
and third paper trays.
Connect the copier to the paper feed unit using four fixing plates and
two screws (M4 x 12) for each plate.
Rear cover
Screw
Screw
Rear cover
Screw
Screw
Connector cover
Fixing plate
Right of rear side
Screws
(M4 x 12)
Detailed view
Front side
Screws (M4 x 12)
Screws (M4 x 12)
Fixing plate
Fixing plate
Fixing plate
Screws
(M4 x 12)
Left of rear side

AR-D21/D22 UNPACKING AND INSTALLATION
– 3 –
5. Connect the harness.
Connect the cassette interface harness contained in the optional paper
feed unit to the paper feed unit interface PWB.
• For two tray type
• For one tray type
6. Attach the rear covers of the copier and the optional
paper feed unit.
Attach the rear covers of the copier and the optional paper feed unit
using two screws respectively.
7. Remove the securing fixture for packing the paper feed
unit and remove the packing material.
Remove the securing fixture for packing that fixes the paper pressure
plate of the tray by rotating it in the direction of the arrow and remove
the packing material.
Caution: Be sure to remove the securing fixture bofore turning on the
power.
8. Change the paper size in the tray.
Hold the grip and slide the cassette side plate to adjust it to the paper to
be used.
Then, fit the rear end plate to the specified size position.
Insert the power plug of the copier to the outlet and turn on the
main switch of the copier. Then, carry out the following procedure.
9. Load paper into the paper tray.
Do not exceed the maximum height line.
10.Check for center displacement.
• Set an original on the document glass and copy it using the paper
tray in the copier.
Then, copy an original using the attached optional paper feed unit.
• If the center of the copy image from the tray in the copier is different
from that of the copy image from the optional paper feed unit, carry
out adjustment referring to the service manual.
Installation of Paper feed unit is now complete.
Cassette relay harness
Cassette relay harness
Rear cover
Real cover
Screws
Screws
Securing fixture for packing
Packing material
Rear plate
Side plate

AR-D21/D22 EXTERNAL VIEW AND INTERNAL STRUCTURE
– 4 –
[4] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. External view
2. Internal strecture
Moter and sensor solenoid etc.
No. Name
1 Paper feed tray
2 Paper feed right cover
AR-D22
1
2
AR-D21
2
1
15 16 17 10
11
9
18
8
6
7
19
45
123
12 14
13
No. Code Name Type Function/Operation Remark
1PWBInterfacePWB
2 DM Drive motor Hybrid Drives gears.
3 LUM3 Lift-up motor (No. 1 tray)
4 CPFS3 Paper feed clutch Electromagnetic clutch Rotates the paper feed roller.
5 TRC3 Transport clutch Electromagnetic clutch Rotates the transport roller.
6 CD3 Cassette detection SW Contact Detects cassette empty.
7 CD4 Cassette detection SW Contact Detects cassette empty. AR-D22 only
8 LUM4 Lift-up motor (No. 2 tray)
9 CPFC3 Paper feed solenoid DC solenoid Feeds paper.
10 DSWR3 Door open/close detection SW Contact Detects door open/close.
11 DSWR4 Door open/close detection SW Contact Detects door open/close. AR-D22 only
12 PED3 Paper empty sensor Photo transmission Detects paper empty in the cassette.
13 LUD3 Upper limit sensor Photo transmission Detects the upper limit for paper pickup.
14 PFD3 Paper entry sensor Photo transmission Detects paper transport.
15 PED4 Paper empty sensor Photo transmission Detects paper empty in the cassette. AR-D22 only
16 LUD4 Upper limit sensor Photo transmission Detects the upper limit for paper pickup. AR-D22 only
17 PFD4 Paper entry sensor Photo transmission Detects paper transport. AR-D22 only
18 CPFC4 Paper feed solenoid DC solenoid Feeds paper. AR-D22 only
19 CPFS4 Paper feed clutch Electromagnetic clutch Rotates the paper feed roller AR-D22 only

AR-D21/D22 OPERATION DESCRIPTION
– 5 –
[5] OPERATION DESCRIPTION
1. Paper transport path
2. Operation descriptions
The operations of this unit is controlled by the copier, and the pickup
roller, the paper feed roller, etc. are driven by the drive motor. Paper
picked up by the pickup roller is transported by the paper feed roller,
detected by the paper entry sensor, and fed to the resist roller.
[6] DISASSEMBLY AND ASSEMBLY
For disassembly, follow instructions of illustrations 1, 2, 3, ... in this
sequence. For assembly, reverse the disassembly procedures.
For replacement of parts described in this manual, refer to the Parts
Guide.
1. Paper feed solenoid
1 - 1
1 - 2
2. Paper feed roller
Refer to 1 - 1.
2 - 1
No. Part name Operation
1 Pickup roller Picks up paper.
2 Paper feed roller Transports paper.
3 Separation sheet Press paper to the paperfeed roller.
4 Paper entry detection ACT Detects transport of paper.
5 Paper entry sensor Detects transport of paper.
6 Resist roller Synchronizes the paper lead edge
and the image lead edge.
2
1
3
5
4
6
2
3
5
4
1
1
2
3
1
2
3
4
4

AR-D21/D22 DISASSEMBLY AND ASSEMBLY
– 6 –
3. Motor, Clutch, Belt, Sensor PWB, Dehumidifier heater
3 - 1
A. Drive motor
3 - A - 1
3 - A - 2
B. Lift-up motor
3 - B - 1
3 - 5
C. Paper feed clutch, Transport clutch
3 - C - 1
1
1
2
1
2
3
1
2
1
1
2
2
2
23
3
1
2
1
1
1
2
2
2
3
3
3