Sharp AR-D28 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.
ARD28//A1E
LASER PRINTER OPTIONS
PAPER FEED UNIT
OPTIONAL POWER SUPPLY UNIT
AR-D28
AR-D27
MODEL AR-MU2
[1] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[2] CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[3] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
[4] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . 4 - 1
[5] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . 5 - 1
[6] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
[7] DISASSEMBLY AND ASSEMBLY, MAINTENANCE . . . . . . . . . 7 - 1
[8] BLOCK DIAGRAM, WIRING DIAGRAM,
CIRCUIT DIAGRAM, PARTS ARRANGEMENT. . . . . . . . . . . . . 8 - 1
PARTS GUIDE
AR-MU2
AR-D28
AR-D27

AR-D28/D27/MU2 PRODUCT OUTLINE
1 – 1
[1] PRODUCT OUTLINE
This unit is installed to one of the following machines to serve as a Paper feed module.
When installing the unit to one of the following machines, one of the multi-purpose tray (AR-MU2), the large capacity paper feed desk (AR-D28), and
the 3-stage paper feed desk (AR-D27) must be installed in advance.
[2] CONFIGURATION
1. The AR-MU2 cannot be installed together with the saddle finisher (AR-FN7)/Scanner unit (AR-EF3).
Applicable models AR-M351N/M451N/M355N/M455N
AR-M351U/M451U/M355U/M455U
Related to paper feed unit
AR-MU2
AR-D27
AR-D28
Scanner rack
Multi purpose drawer
Stand/3 x 500 sheet paper drawer
Stand/MPD & 2000 sheet paper drawer
Multi purpose drawer Stand/3 x 500 sheet paper drawer Stand/MPD & 2000 sheet Duplex module/bypass tray Duplex module
B/W scanner module/DSPF
Saddle stitch finisher Finisher Mail-bin stacker Exit tray Punch unit PS3 expansion kit Facsimile expansion kit Print server card Hard disk drive Upper exit tray extension
Multi-function controller board Fax memory (8 MB) Network scanner expansion kit
B/Wscannermodule/DSPF(AR-EF3)
Upperexittray
extension
(AR-TE4)
Finisher
(AR-FN6)
Mail-bin
stacker
(AR-MS1)
Stand/MPD&2000sheet
paperdrawer
(AR-D28)
Multipurposedrawer
(AR-MU2)
Stand/3x500sheet
paperdrawer
(AR-D27)
Saddlestitch
finisher
(AR-FN7)
Duplex
module/bypasstray
Exittray
(AR-TE3orAR-DU4Standard)
Duplexmodule
(AR-DU3)

AR-D28/D27/MU2 SPECIFICATIONS
3 – 1
[3] SPECIFICATIONS
1. AR-D28
2. AR-D27
AR-D28
Type Stand MPD&2000 Sheet Paper Drawer
(large capacity tray + multi purpose drawer)
Transport speed To support 35-45 sheet/minute
Transport alignment Center alignment
Paper size 1 Tray A3, B4, A4, A4R, B5, B5R, A5R
11"x17", 8.5"x14", 8.5"x13", 8.5"x11",
8.5"x11"R, 5.5"x8.5"R
Executive, Japanese p/c, Monarch(envelope)
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
2 Tray A4, 8.5" x 11"
How to change
the paper size Guide adjustment by user/ Software setting by user
Factory
default paper
size setting
1 Tray 8.5" x 11"
2 Tray The size guide plate is packed together.
Media avail-
able for paper
feeding
1 Tray Plain paper : 60-128g/m² / 16-34lbs
Index paper : 176g/m² / 47lbs
Cover paper : 200-205g/m² / 54-55lbs
Envelope : 75-90g/m², 20-24lbs
Transparency film
*Media heavier than 105g/m² should be
A4/8.5x11" or smaller. Media heavier than
128g/m² should be fed from shorter edge.
*Only single paper feed is enabled for over-
lay copy or copy on back-side of printed
paper.
2 Tray Plain 60-105g/m² / 16-28lbs
Paper capacity
1 Tray Standard: 500sheets(80g/m²)
Post card: 40sheets
Envelope: 40sheets
Transparency film: 40sheets
2 Tray 880+1,320sheets (64g/m²) /
800+1,200sheets (80g/m²)
Paper type 1 Tray Plain, recycled, pre-printed, pre-punched,
color, letter head, labels, heavy, transpar-
ency, Japanese p/c, envelope
(User can set bi-type for each of the above
paper type.)
2 Tray Plain, recycled, pre-printed, pre-punched,
color, letter head (User can set bi-type for
each of the above paper type.)
Sizes to be
detected 1 Tray Auto detection-AB: A3, B4, A4, A4R, B5, B5R, 8.5"x13", A5R
Auto detection-Inch:
11"x17", 8.5"x14", 8.5"x11", 8.5"x11"R,
7.25"x10.5"R, 5.5" x 8.5R
Manual (input detection):
postal card, Monarch(envelope),
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
Ignore detection selectable:
2 Tray Size setting by the serviceman
Paper bal-
ance detec-
tion
1 Tray Provided (paper empty and 3 steps)
2 Tray Enable (Paper empty and
6 steps (3 steps + 3 steps))
Paper loading system To be loaded from the upper side with
front loading system
Tray ascent/
descent time Ascent Within 12 seconds
At paper empty, required time from
tray insert to the empty detection
Descent Own weight descent
Dehumidification heater Not provided
Power consumption 32.2W or lower
Power source Supplied from main unit
(DC24V 1.3A / DC5V 0.2A)
External dimensions 589 x 630 x 404 (mm)
Occupied dimensions 963 x 665 (mm)
Weight Approx. 34kg
AR-D27
Type Stand /3x500 Sheet Paper Drawer
(2 paper trays + 1 multi purpose drawer)
Transport speed To support 35-45 sheet/minute
Transport alignment Center alignment
Paper size 1 Tray A3, B4, A4, A4R, B5, B5R, A5R
11"x17", 8.5"x14", 8.5"x13", 8.5"x11",
8.5"x11"R, 5.5"x8.5"R
Executive, Japanese p/c,Monarch(envelope)
Com-10 (envelope), DL (envelope),
C5 (envelope), ISO B5 (envelope)
2 or 3
Tray A3, B4, A4, A4R, B5, B5R 11"x17", 8.5"x14", 8.5"x13", 8.5"x11",
8.5"x11"R, 7.25"x10.5"R
How to change the
paper size Unit is delivered with paper guide set at max. position in width. (Both of two cassettes.)
Factory default paper
size setting To be set to maximum paper guide width at factory default status (for both trays)
Media avail-
able for paper
feeding
1 Tray Plain paper : 60-128g/m² / 16-34lbs
Index paper : 176g/m² / 47lbs
Cover paper : 200-205g/m² / 54-55lbs
Envelope : 75-90g/m², 20-24lbs
Transparency film
*Media heavier than 105g/m² should be
A4/8.5x11" or smaller.
Media heavier than 128g/m² should be
fed from shorter edge.
*Only single paper feed is enabled for
overlay copy or copy on back-side of
printed paper.
2 or 3
Tray Plain 60-105g/m²/16-28lbs
Paper capacity
1 Tray Standard:500sheets(80g/m²)
Post card:40sheets
Envelope:40sheets
Transparency film:40sheets
2 or 3
Tray Standard paper:500sheets x 2 (64g/m²)
AR-D28

AR-D28/D27/MU2 SPECIFICATIONS
3 – 2
3. AR-MU2
Paper type 1 Tray Plain, recycled, pre-printed, pre-punched,
color, letter head, labels, heavy,
transparency, Japanese p/c, envelope
(User can set bi-type for each of the above
paper type.)
2 or 3
Tray Plain, recycled, pre-printed, pre-punched, color, letter head
(User can set bi-type for each of the above
paper type.)
Sizes to be
detected 1 Tray Auto detection-AB: A3, B4, A4, A4R, B5, B5R, 8.5"x13", A5R
Auto detection-Inch:
11"x17", 8.5"x14", 8.5"x11", 8.5"x11"R,
7.25"x10.5"R, 5.5" x 8.5R
Manual (input detection):
postal card, Monarch(envelope),
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
Ignore detection selectable:
2 or 3
Tray Auto detection-AB A3, B4, A4, A4R, B5, B5R, 8.5"x13"
Auto detection-inch
8.5"x14", 8.5"x13", 8.5"x11", 8.5"x11"R,
7.25"x10.5"R
Paper balance detection Provided (paper empty and 3 steps)
Paper loading system To be loaded from the upper side with front
loading system
Tray ascent
/descent time Ascent Within 7 seconds
At paper empty, required time from
tray insert to the empty detection
Descent Own weight descent
Dehumidification heater Not provided.
Power consumption 32.2W or lower
Power source Supplied from main unit
(DC24V 1.3A / DC5V 0.2A)
External dimensions 589 x 630 x 404 (mm)
Occupied dimensions 963 x 665 (mm)
Weight Approx. 32kg
AR-D27
AR-MU2
Type Multi purpose drawer
Transport speed To support 35-45 sheets/minute
Transport alignment Center alignment
Paper size A3,B4,A4, A4R, B5, B5R, A5R
11"x17", 8.5"x14", 8.5"x13", 8.5"x11",
8.5"x11"R, 5.5"x8.5"R
Executive, Japanese p/c, Monarch(envelope)
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
How to change the
paper size Guide adjustment by user / Software setting by user
Factory default paper
size setting To be set to maximum paper guide width at factory default status.
Media available for
paper feeding Plain paper : 60-128g/m² / 16-34lbs
Index paper : 176g/m² / 47lbs
Cover paper : 200-205g/m² / 54-55lbs
Envelope : 75-90g/m², 20-24lbs
Transparency film
*
Media heavier than 105g/m² should be
A4/8.5x11" or smaller.
Media heavier than 128g/m² should be fed
from shorter edge.
*Only single paper feed is enabledfor overlay
copy or copy on back-side of printed paper.
Paper capacity Standard:500sheets(80g/m²)
Post card:40sheets
Envelope:40sheets
Transparency film:40sheets
Paper type Plain, recycled, pre-printed, pre-punched,
color, letter head, labels, heavy,
transparency, Japanese p/c, envelope
(User can set bi-type for each of the above
paper type.)
Sizes to be detected Auto detection-AB:
A3, B4, A4, A4R, B5, B5R, 8.5"x13", A5R
Auto detection-Inch:
11"x17", 8.5"x14", 8.5"x11", 8.5"x11"R,
7.25"x10.5"R, 5.5" x 8.5R
Manual (input detection):
postal card, Monarch(envelope),
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
Ignore detection selectable:
Paper balance detection Provided (paper empty and 3 steps)
Paper loading system To be loaded from the upper side with front
loading system
Tray ascent/
descent time Ascent Within 7 seconds
At paper empty, required time from
tray insert to the empty detection
Descent Own weight descent
Dehumidification heater Not provided.
Power consumption 24.5W or lower
Power source Supplied from main unit
(DC24V 1A / DC5V 0.1A)
External dimensions 654 x 567 x 144 (mm)
Occupied dimensions 654 x 567 (mm)
Weight Approx. 11kg

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 1
[4] UNPACKING AND INSTALLATION
1. AR-D28
<Before installation>
• Start installation after checking that the DATA and COMMUNICA-
TION indicators on the operation panel are neither lit nor blinking.
1) Turn off the main switch of the main unit of the printer.
Turn the main switch located on the front side of the printer to the
"OFF" position.
Then remove the power plug from the outlet.
2) Attach the adjusters and adjust them.
<1>Insert the left adjusters to the stand/paper drawer.
<2>Turn the each adjusters to lower them until they touch the floor.
*Be sure to attach the left adjuster to prevent overturning.
Caution: The lower tray cannot be pulled out unless the adjuster is low-
ered to the specified position.
3) Put the main unit of the printer on the stand/paper drawer.
<1>Pull out the paper tray of the main unit until it stops and then
remove it by lifting both ends of the tray.
<2>Hold the main unit of the printer at the positions shown in the illus-
tration and put the main unit on the stand/paper drawer so that the
front side and the left side of the main unit are aligned to those of
the stand/paper drawer.
Caution: For installation of the main unit, it must be held by two persons
and installed without haste.
4) Connect the main unit to the stand/paper drawer.
<1>Attach the rear mounting plates using a supplied screw for each.
Caution: Insert the rear mounting plates under the desk frame.
<2>Pull out the upper paper tray of the stand/paper drawer until it stops
and attach the front mounting plates using a supplied screw for each.
Then, remove the lock of the paper tray and close the tray.
<Partsincluded>
Leftadjuster:1pc.
Frontmounting
plates:2pcs.
Rearmounting
plates:2pcs.
Screws(M4x6):
4pcs.
Leftpaperguides:2pcs. Rightpaperguides:2pcs.
"OFF"
12
2
2
2
Frontside
Rearside
Rear mounting plate
Rear mounting plate
Screw
Screw
Desk frame
Rear
mounting plate
Screw
Screw
Front
mounting plate
Front mounting
plate

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 2
<3>Reattach the paper tray of the main unit.
5) Connect the power supply I/F harness to the PCU PWB of the
main unit of the printer.
<1>Remove the screw that fixes the harness cover of the main unit of
the printer and slide the harness cover up to remove it.
Process the harness cover as shown in the illustration.
<2>Connect the power supply I/F harness connector (red, 22pin) to
CN11 (red connector) of the PCU PWB of the main unit of the
printer.
Connect the connector (white, 4pin) of power supply I/F harness to
the I/F connector (white, 4pin) of the main unit.
Remove the M4 screw shown in the illustration, insert the circle ter-
minal of ground harness, and it fixes again.
<3>Reattach the power supply I/F harness cover to its original position
and fix it with the removed screw.
At this time, ensure that the power supply I/F harness are arranged
as shown in the illustration.
• Fix the harness securely to the wire saddle.
6) Attach the paper guides to the lower tray (large capacity tray) and
set the size.
Refer to "Setting and adjustment" described later.
*If another peripheral device must be installed, carry out the following
step at the end of the installation work.
7) Adjust the position of the paper guides of the upper paper tray of
the stand/paper drawer.
Refer to "Setting and adjustment" described later.
8) Carry out the off center adjustment.
2. AR-D27
<Before installation>
• Start installation after checking that the DATA and COMMUNICA-
TION indicators on the operation panel are neither lit nor blinking.
1) Turn off the main switch of the main unit of the printer.
Turn the main switch located on the front side of the printer to the
"OFF" position.
Then remove the power plug from the outlet.
Harness cove
r
Cut out.
Screw
Connector
CN11
Wire saddle
Harness cove
r
Power supply
I/F harness
Screw
Wire saddle
<Parts included>
Left adjuster: 1 pc.
Front mounting
plates: 2 pcs.
Rear mounting
plates: 2 pcs.
Screws (M4x6):
4 pcs.
"OFF"

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 3
2) Attach the adjusters and adjust them.
<1>Insert the left adjusters to the stand/paper drawer.
<2>Turn the five adjusters to lower them until they touch the floor.
*Be sure to attach the left adjuster to prevent overturning.
Caution: The lower tray cannot be pulled out unless the adjuster is low-
ered to the specified position.
3) Put the main unit of the printer on the stand/paper drawer.
<1>Pull out the paper tray of the main unit until it stops and then
remove it by lifting both ends of the tray.
<2>Hold the main unit of the printer at the positions shown in the illus-
tration and put the main unit on the stand/paper drawer so that the
front side and the left side of the main unit are aligned to those of
the stand/paper drawer.
Caution: For installation of the main unit, it must be held by two persons
and installed without haste.
4) Connect the main unit to the stand/paper drawer.
<1>Attach the rear mounting plates using a supplied screw for each.
Caution: Insert the rear mounting plates under the desk frame.
<2>Pull out the upper paper tray of the stand/paper drawer until it stops
and attach the front mounting plates using a supplied screw for each.
Then, remove the lock of the paper tray and close the tray.
Remove the locks of the middle tray and the lower tray similarly.
<3>Reattach the paper tray of the main unit.
5) Connect the power supply I/F harness to the PCU PWB of the
main unit of the printer.
<1>Remove the screw that fixes the harness cover of the main unit of
the printer and slide the harness cover up to remove it.
Process the harness cover as shown in the illustration.
<2>Connect the power supply I/F harness connector (red, 22pin) to
CN11 (red connector) of the PCU PWB of the main unit of the printer.
12
2
2
2
Front side
Rear side
Rear mounting plate
Rear mounting plate
Screw
Screw
Desk frame
Mounting plate
Screw
Screw
Front
mounting plate
Front mounting
plate
Harness cover
Cut out.
Screw
Connector
CN11

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 4
Connect the connector (white, 4pin) of power supply I/F harness to
the I/F connector (white, 4pin) of the main unit.
Remove the M4 screw shown in the illustration, insert the circle ter-
minal of ground harness, and it fixes again.
<3>Reattach the harness cover to its original position and fix it with the
removed screw.
At this time, ensure that the power supply I/F harness is arranged
as shown in the illustration.
• Fix the harness securely to the wire saddle.
6) Adjust the position of the paper guides of the upper paper tray of
the stand/paper drawer.
Refer to "Setting and adjustment" described later.
7) Carry out the off center adjustment.
3. AR-MU2
1) Turn off the main switch of the main unit of the printer.
Turn the main switch located on the front side of the main unit to the
"OFF" position.
Then, remove the power plug of the main unit from the outlet.
2) Put the main unit of the printer on the multi purpose drawer.
<1>Pull out the paper tray of the main unit until it stops and then
remove it by lifting both ends of the tray.
<2>Hold the main unit of the printer at the positions shown in the illus-
tration and put the main unit on the multi purpose drawer so that the
front side and the left side of the main unit are aligned to those of
the multi purpose drawer.
Caution: For installation of the main unit, it must be held by two
persons and installed without haste.
Wire saddle
Harness cove
r
Power supply
I/F harness
Screw
Wire saddle
<Parts included>
Front mounting plates:
2 pcs.
Rear mounting plates:
2 pcs.
Screws (M4x8):
4 pcs.
"OFF"
Front side
Rear side

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 5
3) Connect the main unit of the printer to the multi purpose drawer.
<1>Attach the rear mounting plates using a supplied screw for each.
Caution: Insert the mounting plate under the desk frame.
<2>Pull out the paper tray of the multi purpose drawer until it stops and
attach the front mounting plates using a supplied screw for each.
Then, remove the lock of the paper tray and close the tray.
<3>Reattach the paper tray of the main unit of the printer.
4) Remove the multi rear cabinet.
<1>Remove the two screws that secure the multi rear cabinet.
<2>Remove the two screws that secure the Harness protection sheet.
<3>Remove the filament tape that secure the the power supply I/F harness.
5) Connect the harness to the main unit of the printer.
<1>Remove the screw that fixes the harness cover of the main unit of
the printer and then slide the harness cover up to remove it.
Process the harness cover as shown in the illustration.
<2>Connect the connector of the relay harness of the multi purpose
drawer to the connector of the PCUPWB of themainunit of the printer.
Rear mounting plate
Rear mounting plate
Screw
Screw
Tray frame
Mounting
plate
Screw
Screw
Front mounting plate
Front
mounting plate
Multi rear cabinet
Screw
Screw
Harness cove
r
Screw
Cut out.
CN10
Connector

AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 6
<3>Connect the connector (white, 4pin) of power supply I/F harness to
the I/F connector (white, 4pin) of the main unit.
Connect the power supply I/F harness connector (red, 22pin) to
CN11 (red connector) of the PCU PWB of the main unit of the printer.
Remove the M4 screw shown in the illustration, insert the circle ter-
minal of ground harness, and it fixes again.
*For installation of a finisher or a mail-bin stacker,
see its installation manual.
6) Attach the harness cover.
Reattach the harness cover to its original position and fix it with the
removed screw.
At this time, ensure that the power supply I/F harness is arranged
as shown in the illustration.
• Fix the harness securely to the wire saddle.
*If another peripheral device must be installed, carry out
the following step at the end of the installation work.
7) Adjust the position of the paper guides of the paper tray.
Refer to "Setting and adjustment" described later.
8) Carry out the off center adjustment.
Connector
CN11
Wire saddle
Harness cove
r
Screw
Wire saddle

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 1
[5] EXTERNAL VIEWS AND INTERNAL STRUCTURES
A. EXTERNAL VIEW
B. INTERNAL STRUCTURE
(1) AR-D28
1
AR-D28
54
AR-D27
1
52
3
AR-MU2
1
5
1 Multi-purpose tray (No. 2 tray) 2 No. 3 tray 3 No. 4 tray
4 Large capacity tray 5 Desk left door
1.TPFD1
4
56 7
8910
16
181117
1213
14
15
2.TPFD2
3.TPFD3
1 Tandem tray paper transport sensor 1 (TPFD1) 7 Multipurpose tray paper take-up roller 13 Tandem tray 1 separation roller
2 Tandem tray paper transport sensor 2 (TPFD2) 8 Tandem tray transport roller 2 14 Tandem tray 1 paper feed roller
3 Tandem tray paper transport sensor 3 (TPFD3) 9 Tandem tray 2 paper feed roller 15 Tandem tray paper transport roller 1
4 Multipurpose tray paper transport roller 10 Tandem tray 2 paper take-up roller 16 Multipurpose tray
5 Multipurpose tray paper feed roller 11 Tandem tray 2 separation roller 17 Tandem tray 1
6 Multipurpose tray separation roller 12 Tandem tray 1 take-up roller 18 Tandem tray 2

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 2
(2) AR-D27
(3) AR-MU2
1.DPFD1
4
5
8
15
14 13 12
910
16
17
18
11
67
2.DPFD2
3.DPFD3
1 Desk paper transport sensor 1 (DPFD1) 7 Multipurpose tray paper take-up roller 13 Desk tray 3 paper feed roller
2 Desk paper transport sensor 2 (DPFD2) 8 Desk transport roller 2 14 Desk tray 3 paper feed roller
3 Desk paper transport sensor 3 (DPFD3) 9 Desk tray 2 paper feed roller 15 Desk tray 3 paper transport roller
4 Desk paper transport roller 1 10 Desk tray 2 paper separation roller 16 Multipurpose tray
5 Multipurpose tray paper feed roller 11 Desk tray 2 take-up roller 17 Desk tray 2
6 Multipurpose tray separation roller 12 Desk tray 3 take-up roller 18 Desk tray 3
2
345
1.MCPPD
6
1 Multipurpose tray paper transport sensor (MCPPD) 3 Multipurpose tray paper feed roller 5 Multipurpose tray paper take-up roller
2 Multipurpose tray paper transport roller 4 Multipurpose tray separation roller 6 Multipurpose tray

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 3
C. PWB, SENSOR
(1) AR-D28
3.TDRS
19.TLUD1
20.TPED1
12.TLUD2
13.TPED2
1.TPFD2
17.MCPWS 16.TPFD1
6.MCLUD
15.MCPED
5.TPFD3
2.TSPD1
4.MCSPD
11.TTSD
14.TSPD2
7.MCSS1
21.
22.
8.MCSS2
10.MCSS4
9.MCSS3
18.
Code Name Function Active condition Remark
1 TPFD2 Tandem tray paper transport sensor 2 Tandem tray paper transport detection L : Paper detected
2 TSPD1 Tandem 1 tray
remaining paper quantity sensor Tandem 1 tray remaining paper quantity detection
3 TDRS Side door open/close sensor Side door open/close detection H : Door closed
4 MCSPD MP tray remaining paper quantity
sensor MP tray remaining paper quantity detection
5 TPFD3 Tandem tray paper transport sensor 3 Tandem tray paper transport detection L : Paper detected
6 MCLUD MP tray upper limit sensor MP tray upper limit detection H : Upper limit
detected
7 MCSS1 MP tray rear edge sensor 1 MP tray rear edge size detection L : When pressed In MP tray rear
edge size PWB
8 MCSS2 MP tray rear edge sensor 2 MP tray rear edge size detection L : When pressed In MP tray rear
edge size PWB
9 MCSS3 MP tray rear edge sensor 3 MP tray rear edge size detection L : When pressed In MP tray rear
edge size PWB
10 MCSS4 MP tray rear edge sensor 4 MP tray rear edge size detection L : When pressed In MP tray rear
edge size PWB
11 TTSD Tandem tray open/close sensor Tandem tray open/close detection H : Tray closed
12 TLLD2 Tandem 2 tray upper limit sensor Tandem tray 2 upper limit detection L : Upper limit
detected
13 TPED2 Tandem 2 tray paper empty sensor Tandem tray 2 paper empty detection H : Paper loaded
14 TSPD2 Tandem 2 tray
remaining paper quantity sensor Tandem 2 tray remaining paper quantity detection
15 MCPED MP tray paper empty sensor MP tray paper empty detection L : Paper loaded
16 TPFD1 Tandem tray paper transport sensor 1 Tandem tray paper transport detection L : Paper detected
17 MCPWS MP tray width sensor MP tray paper width detection Slide volume
18 Control PWB Control PWB Communication with the machine,
machine operation control
19 TLLD1 Tandem 1 tray upper limit sensor Tandem tray 1 upper limit detection L : Upper limit
detected
20 TPED1 Tandem 1 tray paper empty sensor Tandem tray 1 paper empty detection H : Paper loaded
21 MP tray rear
edge size PWB MP tray rear edge size PWB Multi-purpose tray rear edge size detection
22 Power I/F PWB Power I/F PWB Distributed the power supply from the main unit.

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 4
(2) AR-D27
Code Name Function Active condition Remark
1 DDRS Side door open/close sensor Side door open/close detection H : Door closed
2MCSPD MPtray
remaining paper quantity sensor MP tray remaining paper quantity detection
3 Control PWB Control PWB Communication with the machine,
machine operation control
4 MCLUD MP tray upper limit sensor MP tray upper limit detection H : Upper limit
detected
5 MCPED MP tray paper empty sensor MP tray paper empty detection L : Paper loaded
6 MDSS1 MP tray rear edge sensor 1 MP tray rear edge size detection L : When pressed In MP tray rear edge size PWB
7 MCSS2 MP tray rear edge sensor 2 MP tray rear edge size detection L : When pressed In MP tray rear edge size PWB
8 MCSS3 MP tray rear edge sensor 3 MP tray rear edge size detection L : When pressed In MP tray rear edge size PWB
9 MCSS4 MP tray rear edge sensor 4 MP tray rear edge size detection L : When pressed In MP tray rear edge size PWB
10 DCSS11 No. 3 tray rear edge sensor 1 No. 3 tray rear edge size detection L : When pressed In No. 3 tray rear edge size PWB
11 DCSS12 No. 3 tray rear edge sensor 2 No. 3 tray rear edge size detection L : When pressed In No. 3 tray rear edge size PWB
12 DCSS13 No. 3 tray rear edge sensor 3 No. 3 tray rear edge size detection L : When pressed In No. 3 tray rear edge size PWB
13 DCSS14 No. 3 tray rear edge sensor 4 No. 3 tray rear edge size detection L : When pressed In No. 3 tray rear edge size PWB
14 DCSS21 No. 4 tray rear edge sensor 1 No. 4 tray rear edge size detection L : When pressed In No. 4 tray rear edge size PWB
15 DCSS22 No. 4 tray rear edge sensor 2 No. 4 tray rear edge size detection L : When pressed In No. 4 tray rear edge size PWB
16 DCSS23 No. 4 tray rear edge sensor 3 No. 4 tray rear edge size detection L : When pressed In No. 4 tray rear edge size PWB
17 DCSS24 No. 4 tray rear edge sensor 4 No. 4 tray rear edge size detection L : When pressed In No. 4 tray rear edge size PWB
18 DPFD1 Desk paper transport sensor 1 Desk paper transport detection L : Paper detected
19 DPED1 N. 3 tray paper empty sensor N. 3 tray paper empty detection L : Paper loaded
20 DPFD2 Desk paper transport sensor 2 Desk paper transport detection L : Paper detected
21 DPFD3 Desk paper transport sensor 3 Desk paper transport detection L : Paper detected
22 DPED2 No. 4 tray paper empty sensor No. 4 tray paper empty detection L : Paper loaded
23 DLUD2 No. 4 tray upper limit sensor No. 4 tray upper limit detection H : Upper limit
detected
24 MCPWS MP tray width sensor MP tray paper width detection Analog voltage Slide volume
25 DSPD2 No. 4 tray
remaining paper quantity sensor No. 4 tray remaining paper quantity detection
26 DLUD1 No. 3 tray upper limit sensor No. 3 tray upper limit detection H : Upper limit
detected
27 DSPD1 No. 3 tray
remaining paper quantity sensor No. 3 tray remaining paper quantity detection
28 MP tray rear
edge size PWB MP tray rear edge size PWB MP tray rear edge size detection
29 No. 3 tray rear
edge size PWB No. 3 tray rear edge size PWB No. 3 tray rear edge size detection
30 No. 4 tray rear
edge size PWB No. 4 tray rear edge size PWB No. 4 tray rear edge size detection
31 Power I/F PWB Power I/F PWB Distributed the power supply from
the main unit.
10.DCSS11 11.DCSS12
13.DCSS14
12.DCSS13
6.MCSS1
28.
29.
30.
31.
7.MCSS2
9.MCSS4
8.MCSS3
14.DCSS21 15.DCSS22
17.DCSS24
16.DCSS23
1.DDRS
27.DSPD1
2.MCSPD
25.DSPD2
24.MCPWS 18.DPFD1
20.DPFD2
21.DPFD3
4.MCLUD
5.MCPED
26.DLUD1
19.DPED1
22.DPED2
23.DLUD2
3.

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 5
(3) AR-MU2
1.MCDRS
3.MCSPD
10.MCPPD
11.MCPWS
4.MCLUD
9.MCPED
5.MCSS1
12.
13.
6.MCSS2
8.MCSS4
7.MCSS3
2.
Code Name Function Active condition Remark
1 MCDRS MP door open / close
sensor MP left door open / close detection H : Door closed
2 Control PWB Control PWB Communication with the machine,
machine operation control
3 MCSPD MP tray remaining paper
quantity sensor MP tray remaining paper quantity detection L : When pressed
4 MCLUD MP tray upper limit sensor MP tray upper limit detection H : Upper limit
detected
5 MDSS1 MP tray rear edge sensor 1 MP tray rear edge size detection L : When
pressed In MP tray rear edge size PWB
6 MCSS2 MP tray rear edge sensor 2 MP tray rear edge size detection L : When
pressed In MP tray rear edge size PWB
7 MCSS3 MP tray rear edge sensor 3 MP tray rear edge size detection L : When
pressed In MP tray rear edge size PWB
8 MCSS4 MP tray rear edge sensor 4 MP tray rear edge size detection L : When
pressed In MP tray rear edge size PWB
9 MCPED MP tray paper empty
sensor MP tray paper empty detection L : Paper loaded
10 MCPPD MP transport sensor Detection of paper on the path L : Paper
detected
11 MCPWS MP tray width sensor MP tray paper width detection Analog voltage Slide volume
12 MP tray rear
edge size PWB MP tray rear edge size PWB MP tray rear edge size detection
13 Power I/F PWB Power I/F PWB Distributed the power supply from the main unit.

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 6
D. MOTOR, CLUTCH
(1) AR-D28
3.TPFCL
4.MCLUM
5.MCPCL
6.TMM
7.TPCL2 8.TLUM2
2.TPCL1
1.TLUM1
Code Name Function Remark
1 TLUM1 Tandem tray 1 lift-up motor Tandem tray 1 lift-up
2 TPCL1 Tandem tray 1 paper feed clutch Clutch for paper feed from tandem tray 1
3 TPFCL LCC transport clutch Clutch for transport from LCC desk
4 MCLUM Multi-purpose tray lift-up motor Multi-purpose tray lift-up
5 MCPCL Multi-purpose paper feed clutch Clutch for paper feed from Multi-purpose tray
6 TMM LCC transport motor LCC desk paper transport
7 TPCL2 Tandem tray 2 paper feed clutch Clutch for paper feed from tandem tray 2
8 TLUM2 Tandem tray 2 lift-up motor Tandem tray 2 lift-up

AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 7
(2) AR-D27
(3) AR-MU2
Code Name Function Remark
1 DLUM2 Desk 2 tray lift-up motor Gate switch between duplex and paper exit
2 DLUM1 Desk 1 tray lift-up motor Cooling the machine and inside of ADU
3 DPFCL Desk transport clutch Clutch for transport
4 MCLUM Multi-purpose tray lift-up motor Multi-purpose tray lift-up
5 MCPCL Multi-purpose paper feed clutch Clutch for paper feed from Multi-purpose tray
6 DMM 3 tray desk transport motor No. 3 tray desk paper transport
7 DPCL1 Desk 1 tray paper feed clutch Clutch for paper feed from desk tray 1
8 DPCL2 Desk 2 tray paper feed clutch Clutch for paper feed from desk tray 2
Code Name Function Remark
1 MCFCL Multi-purpose tray transport clutch Multi-purpose tray transport clutch
2 MCLUM Multi-purpose tray lift-up motor Multi-purpose tray lift-up
3 MCPCL Multi-purpose paper feed clutch Clutch for paper feed from Multi-purpose tray
4 MCM Multi-purpose tray transport motor Multi-purpose tray paper transport
4.MCLUM
5.MCPCL 6.DMM
3.DPFCL
2.DLUM1
1.DLUM2
8.DPCL2
7.DPCL1
2.MCLUM
3.MCPCL
4.MCM
1.MCFCL

AR-D28/D27/MU2 ADJUSTMENTS
6 – 1
[6] ADJUSTMENTS
1. CHANGING THE PAPER SIZE
[Upper tray(Tray2)]
• A3 to A5R(11x7 to 5-1/2x8-1/2R) size plain paper can be set.
• Special paper can be set.
• Two maximum height lines are indicated: one for plain paper and one
for special paper.
[Middle/Lower tray(Tray3/4)]
• A4, B5 or 8-1/2" x 11" size plain paper can be set.
Use the following procedure to change the size as needed.
1) Pull out paper tray.
If paper remains in the tray, remove it.
2) Adjust the guide plates A and B in the tray to the length and width of
the paper.
The guide plates A and B are slidable. Adjust them to the paper size
to be loaded while squeezing their lock levers.
3) Load paper into the tray.
Do not exceed red line when loading special paper to upper tray.
4) Gently push tray into the machine.
Push the tray firmly all the way into the machine.
5) Set the paper size.
Be sure to set the paper size and paper type referring to "2.Setting
the paper type and paper size".
If this is not done, paper misfeeds will occur.
2. SETTING THE PAPER TYPE AND
PAPER SIZE
Follow these steps to change the paper type setting if the paper type is
changed in either paper tray. For the paper types that can be used in
each tray.
1) Press the [CUSTOM SETTINGS] key.
The custom setting menu screen will appear.
2) Touch the [PAPER TRAY SETTINGS] key.
The paper tray selection screen will appear.
3) Touch the [TRAY SETTINGS] key.
4) Display the setting screen of the desired paper tray.
Touch the key or key to display the setting screen of the
desired paper tray.
Note: To automatically switch to a tray with the same size and type of
paper (if there is one) in the event that the paper tray runs out of
paper, display the last screen with the key and select [AUTO
TRAY SWITCHING].
5) Touch the [TYPE/SIZE] key.
6) Select the type of paper that was loaded in the tray.
Example: The paper type of tray 2 is selected
Touch the desired paper type to select it.
The paper size setting screen will appear.
Note: Heavy paper, label sheets and transparency film cannot be used
in trays 1, 3, and 4. Envelopes can only be placed in tray 2.
PAPER TRAY
SETTINGS
TA
ORWARD
RINT
PRINTER
CONDITION
TRAY SETTINGS
PAPER TRAY SETTINGS
CUSTOM SETTINGS
1/4
PLAIN / A4
OK
PRINT
PAPER TRAY SETTINGS
TYPE / SIZE
CUSTOM SETTINGS
TRAY 1
FAX I-FAX
COPY
DOC.
FILING
FIXED PAPER SIDE
DISABLE DUPLEX
DISABLE STAPLE
DISABLE PUNCH
TYPE / SIZE
TRAY 2
PER TRAY SETTINGS
PRINT
COPY
I-FAX DOC.
FILING
FAX
PLAIN / A4
CANCEL
1/2
PLAIN
RECYCLED
PRE-PRINTED PRE-PUNCHED
LETTER HEAD
COLOUR
HEAVY PAPER ENVELOPE
LABELS
TRANSPARENCY
TRAY 2 TYPE/SIZE SETTING
SELECT THE PAPER TYPE.
CUSTOM SETTINGS
1/2

AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 1
[7] DISASSEMBLY AND ASSEMBLY, MAINTENANCE
(1) AR-D28
A. MAJOR PARTS AND SIGNAL FUNCTIONS
TMM
TDRS
MCPED
MCLUD
MCPWS
MCPWS
MCSPD
MCSPD
TPFD1
TPFD3
TTSD
TLUD2
TLUD1
TLUD1
TPED2
TPED1
TAN Sensor PWB
TAN Sensor PWB
TAN Sensor PWB
TSPD2
TSPD2
TSPD1
TPFD2
TPFD2
MCSS2
MCSS4
MCSS1
MCSS3
MCSS3
MCLUM
TLUM1
TLUM2
TLUM2
TPFCL
TPFCL
TPCL1
TPCL1
TPCL2
TPCL2
MCPCL
MCPCL
MPT LD PWB
+24V
1
2MCLUM/
PHR-2
TMMCLK/
TMM/
GND1
+24V
TMM-T
1
2
3
4
5
PHR-5
1
22
1
SMP-02V-NC SMR-02V-N
2
1
2
1
SMP-02V-BC SMR-02V-B
8
11
SMP-11V-NC
2
6
1
5
9
3
SMR-11V-N
7
4
10
8
11
2
6
1
5
9
3
7
4
10
MCSPD2
+5V
3
1
GND2
179228-3
GND2
1N.C.
2
MCSS4
4
MCSS1
6
MCSS2
3
MCSS35
PHR-6
CN-D
VB(+24V)
13
F-GND
GND2(S-GND)
MCSS4
12
TPFCL/
GND1(P-GND)
4
MCSS2 17
20
VD(+5V)
18
1
TMM-T
16
14
3
9
7
MCSS1
VB(+24V)
11
MCSS3
VB(+24V)
MCSPD
MCPCL/
15
8
6MCLUM/
TMM/
2
GND2(S-GND)
TMMCLK/
+24V(MCLUM) 5
19
10
PHDR-20VS-1
SRA-21T-4
13
14
15
16
17
18
4
5
6
7
8
9
13
14
15
16
17
18
4
5
6
7
8
9
SMR-18V-BSMP-18V-BC
MCLUD
GND2
+5V
+5V
TPFD1
GND2
1
2
3
3
1
2
179228-3
179228-3
+5V
GND2
TDRS
+5V
MCPED
GND2
1
2
3
1
2
3
179228-3
179228-3
SMP-03V-BC
11
3
SMR-03V-B
3
22
VAREF
2T MCPWS
1T MCPWS2
3T
CN-E
MCPED
TDRS
N.C.
TPFD1
MCLUD
MCPWS2
3
13
5
12
VD(+5V)
4
GND2(S-GND) 1
9
6
7
15
16
11
14
10
2
8
VD(+5V)
GND2(S-GND)
GND2(S-GND)
VD(+5V)
VD(+5V)
GND2(S-GND)
VD(+5V)
MCPWS
PHDR-16VS-1
TAN Control PWB
1
2
3
VD(+5V)
TSPD2
S-GND
179228-3
S-GND
VD(+5VR)
1TPED2
2
4
TLUD2
PHR-5
3
5VD(+5V)
VD(+5V)
S-GND
TPFD2
1
3
2
2
3
2
1 VD(+5V)
TSPD1
S-GND
1
TLUM2
VB(+24V)
VD(+5V)
S-GND
TTSD
3
2
1
179228-3
PHR-2
179228-3
179228-3
S-GND
VD(+5VR)
S-GND
1TPED1
1
2
VD(+5V)
2
4
179228-3
3
TLUD1
TPFD3
PHR-5
3
5VD(+5V)
CN-J
VB(+24V)1
TLUM1/
PHR-2
2
1
2
3
TLUM1/
VB(TLUM1)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
4
5
6
7
8
9
10
PHR-10
CN-I
TLUD1
TPFD3
S-GND
VD(+5V)
S-GND
1
2
3
4
5
6
7
9
VD(+5VR)
TPED1
N.C
8
PHR-9
VD(+5V)
CN-C
CN-G (RED)
TPCL2/
VB(+24V) 1
2
PHR-2-R(RED)
VB(+24V)
TPCL1/
1
2
PHR-2
2
1
2
1
SMP-02V-BC SMR-02V-B
2
1
2
1
SMP-02V-NC SMR-02V-N
CN-B
2
3
4
VD(+5V)
TSPD1
VB(TLUM2)
TLUM2/
VD(+5V)
S-GND
S-GND 1
TPFD2
9
5
8
7
6N.C.
VD(+5V)
S-GND
TTSD
12
11
10
PHR-12
CN-A
1
2
3
4
5
6
7
8
9
TPED2
TSPD2
TLUD2
VD(+5V)
S-GND
VD(+5V)
S-GND
N.C
PHR-9
VD(+5VR)

AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 2
Code Name Function Remark
TPFD2 Tandem tray paper transport sensor 2 Tandem tray paper transport detection
TSPD1 Tandem 1 tray remaining paper quantity sensor Tandem 1 tray remaining paper quantity detection
TDRS Side door open/close sensor Side door open/close detection
MCSPD MP tray remaining paper quantity sensor MP tray remaining paper quantity detection
TPFD3 Tandem tray paper transport sensor 3 Tandem tray paper transport detection
MCLUD MP tray upper limit sensor MP tray upper limit detection
MCSS1 MP tray rear edge sensor 1 MP tray rear edge size detection In MP tray rear edge size PWB
MCSS2 MP tray rear edge sensor 2 MP tray rear edge size detection In MP tray rear edge size PWB
MCSS3 MP tray rear edge sensor 3 MP tray rear edge size detection In MP tray rear edge size PWB
MCSS4 MP tray rear edge sensor 4 MP tray rear edge size detection In MP tray rear edge size PWB
TTSD Tandem tray open/close sensor Tandem tray open/close detection
TLLD2 Tandem 2 tray upper limit sensor Tandem tray 2 upper limit detection
TPED2 Tandem 2 tray paper empty sensor Tandem tray 2 paper empty detection
TSPD2 Tandem 2 tray
remaining paper quantity sensor Tandem 2 tray remaining paper quantity detection
MCPED MP tray paper empty sensor MP tray paper empty detection
TPFD1 Tandem tray paper transport sensor 1 Tandem tray paper transport detection
MCPWS MP tray width sensor MP tray paper width detection Slide volume
TLLD1 Tandem 1 tray upper limit sensor Tandem tray 1 upper limit detection
TPED1 Tandem 1 tray paper empty sensor Tandem tray 1 paper empty detection
TLUM1 Tandem tray 1 lift-up motor Tandem tray 1 lift-up
TPCL1 Tandem tray 1 paper feed clutch Clutch for paper feed from tandem tray 1
TPFCL LCC transport clutch Clutch for transport from LCC desk
MCLUM Multi-purpose tray lift-up motor Multi-purpose tray lift-up
MCPCL Multi-purpose paper feed clutch Clutch for paper feed from Multi-purpose tray
TMM LCC transport motor LCC desk paper transport
TPCL2 Tandem tray 2 paper feed clutch Clutch for paper feed from tandem tray 2
TLUM2 Tandem tray 2 lift-up motor Tandem tray 2 lift-up