SHARP SM-ARD21 Service Manual
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SERVICE MANUAL
Digital copier
MODEL
CONTENTS
CODE : 00Z
ARD22//A1E
: Paper feed unit
1-Stage paper
AR-D21
AR-D22
feed unit
2-Stage paper
feed unit
[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
Parts mark ed w ith "!" 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.
This document has been pub lished to be used
SHARP CORPORATION
for after sales service only.
The contents are subject to change without notice.
[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)
AR-D21 AR-D22
No. of stage 1-stage 2-stage
Capacity 550 pages x 1 stage
Size detection No (The paper size is set with the user program.)
Paper empty
detection
Paper feed
size
Size when
shipping
Size selection User selection (Set by the user program.)
Cassette
installation
Heater Provided only for Japan.
Power source Supplied from the copier. DC24V.
Power
consumption
Drive supply
External
dimensions
Weight About 6.1kg About 11.8kg
(Japan)
500 pages x 1 stage
(EX)
(Note) Japan: 64g/m
Provided
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
AB series: A4
Inch series: 8.5 x 11
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
Installed by the user.
5.6W 8.4W
• When installed as the
2-stage cassette fo r the
2-stage cassette standard
model: Supplied via gears
from the copier.
• When installed as the
optional 2-stage or 3stage cassette:
Sup plied by the
individu al m otor.
596(W) x 498(D) x
97(H) mm
550 pages x 2 stages
(Total 1,100pages)
(Japan)
500 pages x 2 stages
(Total 1,000 pages)
(EX)
2
, EX: 80g/m
Supplied by the
individual motor.
596(W) x 498(D) x
194(H)mm
2
[3] UNPACKING AND INSTALLATION
1. Unpacking
AR-D21
AR-D22
2. Installation
PARTS INCLUDED
Fixing plates: 4 pcs. Paper size labelScrews (M4 x 12): 8 pcs.
Cassette relay harness
(contained in the optional paper feed unit)
Remove all pieces of fixing tape and fixing materials from the paper
feed unit.
AR-D21/D22 GENERAL
– 1 –
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.
Screw
Rear cover
Screw
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.
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.
Front side
Screws (M4 x 12)
Detailed view
Fixing plate
Screws (M4 x 12)
Left of rear side
Fixing plate
Right of rear side
Fixing plate
Screw
3. Remove the connector cover.
Remove the cover from the connector.
Connector cover
Rear cover
Screw
Fixing plate
Screws
(M4 x 12)
Screws
(M4 x 12)
AR-D21/D22 UNPACKING AND INSTALLATION
– 2 –
5. Connect the harness.
Connect the cassette interface harness contained in the opt ional paper
feed unit to the paper feed unit interface PWB.
• For two tray type
Cassette relay harness
• For one tray type
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 arr ow and remove
the packing material.
Securing fixture for packing
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.
Cassette relay harness
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.
Rear cover
Screws
Rear plate
Side plate
Insert the power plug of the copier to the outlet and turn on the
main switch of the copier. Then, ca r r y out the followi ng procedure.
9. Load paper into the paper tray.
Do not exceed the maximum height line.
Real cover
Screws
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 t he 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 Pa per feed unit is now complet e.
AR-D21/D22 UNPACKING AND INSTALLATION
– 3 –
[4] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. External view
1
No. Name
1 Paper feed tray
2 Paper feed right cover
AR-D22
1
2
AR-D21
2
2. Internal strec t ure
1
2
3
4
5
13
12
14
10
18
9
15
16
17
11
Moter and sensor solenoid etc.
No. Code Name Type Function/Operation Remark
1PWBInterface PWB
2 DM Drive motor Hybrid Drive s 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
6
19
7
8
AR-D21/D22 EXTERNAL VIEW AND INTERNAL STRUCTURE
– 4 –
[5] OPERATION DESCRIPTION
1. Paper transport path
2. Operation descriptio ns
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 Pa rts
Guide.
1. Paper feed solenoid
1 - 1
1 - 2
2
1
3
No. Part name Operation
1 Pickup roller Picks up paper.
2 Paper feed roller Transports paper.
3 Separation sheet Press paper t o t h e p a p e r f e e d r oller.
4 Paper entry detection ACT Detects transport of paper.
5 Paper entry sensor Detects transport of paper.
6 Resist roller Synchronizes the p aper lea d edge
and the image lead edge.
6
5
4
2. Paper feed roller
3
2
1
Refer to 1 - 1.
2 - 1
5
4
3
2
1
1
3
2
4
4
AR-D21/D22 OPERATION DESCRIPTION
– 5 –
3. Motor, Clutch, Belt, Sensor PWB, Dehumidifier heater
3 - 1
2
A. Drive motor
3 - A - 1
B. Lift-up motor
3 - B - 1
1
1
1
3 - 5
3
2
2
2
1
3
2
2
3 - A - 2
1
3
2
1
C. Paper feed clutch, Transport clutch
3 - C - 1
1
2
1
3
2
3
2
1
1
3
2
AR-D21/D22 DI SASSEMBLY AND ASSEMBLY
– 6 –
D. Belt
Refer to 3 - A - 1.
3 - D - 1
[7] MAINTENANCE
No. Name Work item When service call
1 Pickup roller Cleaning 50K
3
2 Paper feed roller Cleaning 50K
3 Separation sheet Cleaning 50K
For the replacement method of the pickup roller and paper feed roller,
refer to “[6] DISASSEMBLY AND AS SEMBLY”.
3 - D - 2
E. Sensor PWB
3 - E - 1
2
6
5
4
1
3
1
3
2
No. Name Work item When service call
1 Pickup rollor Replacement 100K
2 Paper feed roller Replacement 100K
3 Separation sheet Replacement 100K
1
2
3
3
AR-D21/D22 MAINTENANCE
– 7 –
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