SHARP ARD28, ARD27, ARMU2 Service Manual
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SERVICE MANUAL
AR-D28
AR-MU2
AR-D27
CODE : 00Z
ARD28//A1E
LASER PRINTER OPTIONS
PAPER FEED UNIT
OPTIONAL POWER SUPPLY UNIT
AR-D28
AR-D27
MODEL
CONTENTS
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
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] 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.
Applicable models AR-M351N/M451N/M355N/M455N
AR-M351U/M451U/M355U/M455U
[2] CONFIGURATION
1. The AR-MU2 cannot be installed together with the saddle finisher (AR-FN7)/Scanner unit (AR-EF3).
Exit tray
(AR-TE3 or AR-DU4 Standard)
Duplex
module/bypass tray
Duplex module
(AR-DU3)
B/W scanner module/DSPF(AR-EF3)
Upper exit tray
extension
(AR-TE4)
Finisher
(AR-FN6)
Saddle stitch
finisher
(AR-FN7)
Stand/3 x 500 sheet
paper drawer
(AR-D27)
Related to paper feed unit
Multi purpose drawer
Stand/3 x 500 sheet paper drawer
Stand/MPD & 2000 sheet paper drawer
AR-MU2
AR-D27
AR-D28
Multi purpose drawer
(AR-MU2)
B/W scanner module/DSPF
Scanner rack
Multi purpose drawer
Stand/3 x 500 sheet paper drawer
Stand/MPD & 2000 sheet
Duplex module/bypass tray
Duplex module
Mail-bin
stacker
(AR-MS1)
Stand/MPD & 2000 sheet
paper drawer
(AR-D28)
Saddle stitch finisher
Finisher
Mail-bin stacker
Exit tray
Punch unit
Upper exit tray extension
Multi-function controller board
PS3 expansion kit
Print server card
Fax memory (8 MB)
Network scanner expansion kit
Facsimile expansion kit
Hard disk drive
AR-D28/D27/MU2 PRODUCT OUTLINE
1 – 1
[3] SPECIFICATIONS
1. AR-D28
AR-D28
Type Stand MPD&2000 Sheet Paper Drawer
Transport speed To support 35-45 sheet/minute
Transport alignment Center alignment
Paper size 1 Tray A3, B4, A4, A4R, B5, B5R, A5R
2 Tray A4, 8.5" x 11"
How to change
the paper size
Factory
default paper
size setting
Media available for paper
feeding
Paper capacity
Paper type 1 Tray Plain, recycled, pre-printed, pre-punched,
Sizes to be
detected
Paper balance detection
1 Tray 8.5" x 11"
2 Tray The size guide plate is packed together.
1 Tray Plain paper : 60-128g/m² / 16-34lbs
2 Tray Plain 60-105g/m² / 16-28lbs
1 Tray Standard: 500sheets(80g/m²)
2 Tray 880+1,320sheets (64g/m²) /
2 Tray Plain, recycled, pre-printed, pre-punched,
1 Tray Auto detection-AB:
2 Tray Size setting by the serviceman
1 Tray Provided (paper empty and 3 steps)
2 Tray Enable (Paper empty and
(large capacity tray + multi purpose drawer)
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(enve lope)
Com-10(envelope), DL(envelope),
C5(envelope), ISO B5(envelope)
Guide adjustment by user/
Software setting by user
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 shou ld b e
*
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.
Post card: 40sheets
Envelope: 40sheets
Transparency film: 40sheets
800+1,200sheets (80g/m²)
color, letter head, labels, heavy, transparency, Japanese p/c, envelope
(User can set bi-type for each of the above
paper type.)
color, letter head (User can set bi-type for
each of the above paper type.)
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:
6 steps (3 steps + 3 steps))
AR-D28
Paper loading system To be loaded from the upper side with
Tray ascent/
descent time
Dehumidification heater Not provided
Power consumption 32.2W or lower
Power source Supplied from main unit
External dimensions 589 x 630 x 404 (mm)
Occupied dimensions 963 x 665 (mm )
Weight Approx. 34kg
Ascent Within 12 seconds
Descent Own weight descent
front loading system
At paper empty, required time from
tray insert to the empty detection
(DC24V 1.3A / DC5V 0.2A)
2. AR-D27
AR-D27
Type Stand /3x500 Sheet Paper Drawer
Transport speed To support 35-45 sheet/minute
Transport alignment Center alignment
Paper size 1 Tray A3, B4, A4, A4R, B5, B5R, A5R
2 or 3
Tray
How to change the
paper size
Factory default paper
size setting
Media available for paper
feeding
Paper capacity
1 Tray Plain paper : 60-128g/m² / 16-34lbs
2 or 3
Tray
1 Tray Standard:500sheets(80g/m²)
2 or 3
Tray
(2 paper trays + 1 multi purpose drawer)
11"x17", 8.5"x14", 8.5"x13", 8.5"x11",
8.5"x11"R, 5.5"x8.5"R
Executive, Japanese p/c,Mona rch(e nvelope )
Com-10 (envelope), DL (envelope),
C5 (envelope), ISO B5 (envelope)
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
Unit is delivered with paper guide set at max.
position in width. (Both of t wo ca ssettes. )
To be set to maximum paper guide width at
factory default status (for both trays)
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.
Plain 60-105g/ m²/ 16-28lbs
Post card:40sheets
Envelope:40sheets
Transparency film:40sheets
Standard paper:500sheets x 2 (64g/m²)
AR-D28/D27/MU2 SPECIFICATIONS
3 – 1
AR-D27
Paper type 1 Tray Plain, r e cy cl e d, pr e -p ri n ted , pr e -p un ch e d,
2 or 3
Tray
Sizes to be
detected
Paper balance detection Provided (paper empty and 3 steps)
Paper loading system To be loaded from the upper side with front
Tray ascent
/descent time
Dehumidification heater Not provided.
Power consumption 32.2W or lower
Power source Supplied from main unit
External dimensions 589 x 630 x 404 (mm)
Occupied dimensions 963 x 665 (mm)
Weight Approx. 32kg
1 Tray Auto detection-AB:
2 or 3
Tray
Ascent Within 7 seconds
Descent Own weight descent
color, letter head, labels, heavy,
transparency, Japanese p/c, envelope
(User can set bi-type for each of the above
paper type.)
Plain, recycled, pre-printed, pre-punched,
color, letter head
(User can set bi-type for each of the above
paper type.)
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:
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
loading system
At paper empty, required time from
tray insert to the empty detection
(DC24V 1.3A / DC5V 0.2A)
3. AR-MU2
AR-MU2
Type Multi purpose drawer
Transport speed To support 35-45 sheets/minute
Transport alignment Center alignment
Paper size A3, B4 , A 4, A4R, B5 , B 5 R , A 5 R
How to change the
paper size
Factory default paper
size setting
Media available for
paper feeding
Paper capacity Standard:500sheets(80g/m²)
Paper type Pla in , re cy c le d , p re - pr in te d , pr e- pu n ch e d,
Sizes to be detected Auto detection-AB:
Paper balance detection Provided (paper empty and 3 steps)
Paper loading system To be loaded from the upper side with front
Tray ascent/
descent time
Dehumidification heater Not provided.
Power consumption 24.5W or lower
Power source Supplied from main unit
External dimensions 654 x 567 x 144 (mm)
Occupied dimensions 654 x 567 (mm)
Weight Approx. 11kg
Ascent Within 7 seconds
Descent Own weight descent
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(envel ope)
Com-10(envelope), DL(envelo pe),
C5(envelope), ISO B5(envelo pe)
Guide adjustment by user /
Software setting by user
To be set to maximum paper guide width at
factory default status.
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
*
A4/8.5x 1 1" or s ma ll e r.
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 printe d paper.
Post card:40sheets
Envelope:40sheets
Transparency film:40sheets
color, letter head, labels, heavy,
transparency, Japanese p/c, envelope
(User can set bi-type for each of the abov e
paper type.)
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:
loading system
At paper empty, required time from
tray insert to the empty detection
(DC24V 1A / DC5V 0.1A)
AR-D28/D27/MU2 SPECIFICATIONS
3 – 2
[4] UNPACKING AND INSTALLATION
1. AR-D28
<Before installation>
• Start installation after checking that the DATA and COMMUNICATION indicators on the operation panel are neither lit nor blinking.
<Partsincluded>
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 un it are aligned to those of
the stand/paper drawer.
Frontside
Rearside
Leftadjuster:1pc.
Frontmounting
plates:2pcs.
Leftpaperguides:2pcs. Rightpaperguides:2pcs.
Rearmounting
plates:2pcs.
Screws(M4x6):
4pcs.
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.
"OFF"
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.
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.
Rear mounting plate
Screw
Rear mounting plate
Rear
mounting plate
Desk frame
Screw
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 pla tes usin g a supp lied scre w for each .
Then, remove the lock of the paper tray and cl ose the tray .
2
2
2
1
Be sure to attach the left adjuster to prevent overturning.
*
2
Caution: The lower tray cannot be pulled out unless the adjuster is low-
ered to the specified position.
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 1
Front mounting
plate
Screw
Front
mounting plate
Screw
<3>Reattach the paper tray of the main unit.
r
r
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 co ver 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.
Screw
Cut out.
Harness cove
<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 s upply I /F harnes s ar e ar ranged
as shown in the illustration.
• Fix the harness securely to the wire saddle.
Screw
Power supply
I/F harness
Harness cove
Wire saddle
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>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.
Connector
CN11
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 terminal of ground harness, and it fixes again.
2. AR-D27
<Before installation>
• Start installation after checking that the DATA and COMMUNICATION indicators on the operation panel are neither lit nor blinking.
<Parts included>
Screws (M4x6):
4 pcs.
Left adjuster: 1 pc.
Front mounting
plates: 2 pcs.
Rear mounting
plates: 2 pcs.
1) Turn off the main switch of the main unit of the printer.
Turn the main switch located on the front side of t he printer to the
"OFF" position.
Then remove the power plug from the outlet.
"OFF"
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 2
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.
<2>Pull out the upper paper tray of the stand/paper drawer until it stops
and attach the front mounting pla tes usin g a supp lied scre w 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.
2
2
1
Be sure to attach the left adjuster to prevent overturning.
*
2
2
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.
Front side
Front mounting
plate
Screw
<3>Reattach the paper tray of the main unit.
Front
mounting plate
Screw
Rear side
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.
Rear mounting plate
Screw
Rear mounting plate
Mounting plate
Screw
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.
Screw
Cut out.
Harness cover
<2>Connect the power supply I/F harness connector (red, 22pin) to
CN11 (red connector) of the PCU PWB of the mai n unit of the pri nter.
Connector
CN11
Desk frame
Caution: Insert the rear mounting plates under the desk frame.
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 3
Connect the connector (white, 4pin) of power supply I/F harness to
r
the I/F connector (white, 4pin) of the main unit.
Remove the M4 screw shown in the illustration, insert the circle terminal of ground harness, and it fixes again.
3. AR-MU2
<Parts included>
<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.
Screw
Power supply
I/F harness
Harness cove
Wire saddle
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.
Front mounting plates:
2 pcs.
Rear mounting plates:
2 pcs.
Screws (M4x8):
4 pcs.
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.
"OFF"
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 un it are aligned to those of
the multi purpose drawer.
Front side
Rear side
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
Caution: For installation of the main unit, it must be held by two
persons and installed without haste.
4 – 4
3) Connect the main unit of the printer to the multi purpose drawer.
r
<1>Attach the rear mounting plates using a supplied screw for each.
Rear mounting plate
<2>Remove the two screws that secure the Harness protection sheet.
Screw
Rear mounting plate
Tray frame
Screw
Mounting
plate
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.
Front
mounting plate
Screw
Front mounting plate
Screw
<3>Remove the filam ent tape that secure the the power s upply 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.
Screw
<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.
Screw
Multi rear cabinet
Screw
Cut out.
Harness cove
<2>Connect the connector of the relay harness of the multi purpose
drawer to the connector of th e PCU PWB of the main unit of the pr inter.
CN10
Connector
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 5
<3>Connect the connector (white, 4pin) of power supply I/F harness to
r
the I/F connector (white, 4pin) of the main unit.
Connect the power supply I/F harness co nnector (r ed, 22p in) to
CN11 (red connector) of the PCU PWB of th e main uni t of t he prin ter.
Remove the M4 screw shown in the illustration, insert the circle terminal of ground harness, and it fixes again.
Connector
CN11
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.
Screw
Harness cove
Wire saddle
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.
AR-D28/D27/MU2 UNPACKING AND INSTALLATION
4 – 6
[5] EXTERNAL VIEWS AND INTERNAL STRUCTURES
A. EXTERNAL VIEW
5
1
1
2
3
5
4
5
AR-D27
AR-D28
1 Multi-purpose tray (No. 2 tray) 2 No. 3 tray 3 No. 4 tray
4 Large capacity tray 5 Desk left door
B. INTERNAL STRUCTURE
(1) AR-D28
4
1.TPFD1
56 7
15
8910
1
AR-MU2
16
2.TPFD2
14
1213
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 – 1
181117
(2) AR-D27
2.DPFD2
4
1.DPFD1
5
67
910
11
8
3.DPFD3
15
14 13 12
16
17
18
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
(3) AR-MU2
1.MCPPD
2
345
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 – 2
C. PWB, SENSOR
(1) AR-D28
2.TSPD1
3.TDRS
5.TPFD3
4.MCSPD
6.MCLUD
22.
21.
7.MCSS1
9.MCSS3
8.MCSS2
10.MCSS4
1.TPFD2
19.TLUD1
20.TPED1
18.
17.MCPWS
14.TSPD2
15.MCPED
16.TPFD1
11.TTSD
12.TLUD2
13.TPED2
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
MP tray remaining paper quantity detection
sensor
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
MP tray rear edge size PWB M ulti-purpos e tray rear edge size detection
edge size PWB
22 Power I/F PWB Power I/F PWB Distributed the po wer supply fr om the main unit .
AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 3
(2) AR-D27
1.DDRS
2.MCSPD
3.
4.MCLUD
31.
5.MCPED
28.
6.MCSS1
8.MCSS3
29.
7.MCSS2
9.MCSS4
27.DSPD1
26.DLUD1
25.DSPD2
24.MCPWS
23.DLUD2
22.DPED2
21.DPFD3
19.DPED1
20.DPFD2
10.DCSS11
12.DCSS13
30.
14.DCSS21
18.DPFD1
16.DCSS23
11.DCSS12
13.DCSS14
15.DCSS22
17.DCSS24
Code Name Function Active condition Remark
1 DDRS Side door open/close sensor Side door open/close detection H : Door closed
2MCSPD MP tray
remaining paper quantity sensor
MP tray
remaining paper quantity detection
3 Control PWB Control PWB C om mu nication 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 DCSS 1 1 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 DCSS 1 2 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 DCSS 1 3 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 DCSS 1 4 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 DCSS 2 1 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 DCSS 2 2 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 DCSS 2 3 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 DCSS 2 4 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 DPF D1 Desk paper transport sensor 1 Desk paper transport detection L : Pape r detected
19 DPED1 N. 3 tray paper empty sensor N. 3 tray paper empty detection L : Paper loaded
20 DPF D2 Desk paper transport sensor 2 Desk paper transport detection L : Paper detected
21 DPF D3 Desk paper transport sensor 3 Desk paper transport detection L : Paper detected
22 DPE D 2 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 DSP D 2 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 DSP D 1 No. 3 tray
remaining paper quantity sensor
28 MP tray rear
MP tray rear edge size PWB MP tray rear edge size detection
No. 3 tray
remaining paper quantity detection
edge size PWB
29 No. 3 tray rear
No. 3 tray rear edge size PWB No. 3 tray rear edge size detection
edge size PWB
30 No. 4 tray rear
No. 4 tray rear edge size PWB No. 4 tray rear edge size detection
edge size PWB
31 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
(3) AR-MU2
13.
4.MCLUD
3.MCSPD
2.
1.MCDRS
11.MCPWS
12.
5.MCSS1
7.MCSS3
10.MCPPD
6.MCSS2
8.MCSS4
9.MCPED
Code Name Function Active condition Remark
1 MCDRS MP door open / close
MP left door open / close detection H : Door closed
sensor
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
In MP tray rear edge size PWB
pressed
6 MCSS2 MP tray rear edge sensor 2 MP tray rear edge size detection L : When
In MP tray rear edge size PWB
pressed
7 MCSS3 MP tray rear edge sensor 3 MP tray rear edge size detection L : When
In MP tray rear edge size PWB
pressed
8 MCSS4 MP tray rear edge sensor 4 MP tray rear edge size detection L : When
In MP tray rear edge size PWB
pressed
9 MCPED MP tray paper empty
MP tray paper empty detection L : Paper loaded
sensor
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 suppl y f rom th e mai n uni t.
AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 5
D. MOTOR, CLUTCH
(1) AR-D28
3.TPFCL
2.TPCL1
1.TLUM1
4.MCLUM
5.MCPCL
6.TMM
7.TPCL2
8.TLUM2
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 – 6
(2) AR-D27
5.MCPCL
4.MCLUM
3.DPFCL
2.DLUM1
1.DLUM2
6.DMM
8.DPCL2
7.DPCL1
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 DPCL 2 Desk 2 tray paper feed clutch Clutch for paper feed from desk tray 2
(3) AR-MU2
4.MCM
3.MCPCL
2.MCLUM
1.MCFCL
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
AR-D28/D27/MU2 EXTERNAL VIEWS AND INTERNAL STRUCTURES
5 – 7
[6] ADJUSTMENTS
PAPER TRAY
SETTINGS
TA
PRINTER
CONDITION
TRAY SETTINGS
PAPER TRAY SETTINGS
CUSTOM SETTINGS
TYPE / SIZE
TRAY 2
PER TRAY SETTINGS
PRINT
COPY
I-FAX
DOC.
FILING
FAX
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 re ferring 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 ca n 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.
CUSTOM SETTINGS
PAPER TRAY SETTINGS
TRAY 1
COPY
PRINT
FAX
TYPE / SIZE
PLAIN / A4
I-FAX
DOC.
FILING
FIXED PAPER SIDE
DISABLE DUPLEX
DISABLE STAPLE
DISABLE PUNCH
OK
1/4
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.
PLAIN / A4
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.
AR-D28/D27/MU2 ADJUSTMENTS
6 – 1
CUSTOM SETTINGS
TRAY 2 TYPE/SIZE SETTING
SELECT THE PAPER TYPE.
PLAIN
PRE-PRINTED PRE-PUNCHED
RECYCLED
LETTER HEAD
COLOUR
HEAVY PAPER
LABELS
TRANSPARENCY
CANCEL
1/2
ENVELOPE
1/2
[7] DISASSEMBLY AND ASSEMBLY, MAINTENANCE
MCPWS
MCSPD
TLUD1
TAN Sensor PWB
TSPD2
TPFD2
MCSS3
TLUM2
TPFCL
TPCL1
TPCL2
MCPCL
(1) AR-D28
A. MAJOR PARTS AND SIGNAL FUNCTIONS
2
MCLUM/
+24V
1
PHR-2
1221
SMP-02V-NC
SMR-02V-N
212
1
SMP-02V-BC
SMR-02V-B
MCLUM
MCPCL
TMM
MPT LD PWB
MCSS1
MCSS3
MCSS2
MCSS4
TAN Control PWB
CN-D
VB(+24V)
TPFCL/
VB(+24V)
MCPCL/
+24V(MCLUM) 5
VB(+24V)
GND1(P-GND)
TMM/
TMMCLK/
TMM-T
MCSPD
VD(+5V)
GND2(S-GND)
MCSS1
GND2(S-GND)
MCSS2 17
MCSS3
MCSS4
F-GND
PHDR-20VS-1
CN-E
GND2(S-GND) 1
MCLUD
VD(+5V)
VD(+5V)
GND2(S-GND)
MCPED
GND2(S-GND)
TDRS
VD(+5V)
VD(+5V)
GND2(S-GND)
TPFD1
MCPWS2313
MCPWS
VD(+5V)
N.C.
PHDR-16VS-1
CN-I
S-GND
TPFD3
VD(+5V)
S-GND
TLUD1
VD(+5VR)
N.C
TPED1
VD(+5V)
PHR-9
CN-B
S-GND 1
TSPD1
VD(+5V)
TLUM2/
VB(TLUM2)
S-GND
TPFD2
VD(+5V)
S-GND
TTSD1211
VD(+5V)
PHR-12
CN-C
VB(+24V)
TPCL1/12
PHR-2
CN-G
VB(+24V) 1
TPCL2/
PHR-2-R(RED)
CN-J
TLUM1/
VB(TLUM1)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
PHR-10
CN-A
S-GND
TSPD2
VD(+5V)
S-GND
TLUD2
VD(+5VR)
N.C
TPED2
VD(+5V)
PHR-9
(RED)
1
2
3
4
6MCLUM/
7
8
9
10
11
12
13
14
15
16
18
19
20
2
4
5
6
7
8
9
10
11
12
14
15
16
1
2
3
4
5
6
7
8
9
2
3
4
5
6N.C.
7
8
9
10
2
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
SRA-21T-4
SMP-02V-BC SMR-02V-B
SMP-02V-NC SMR-02V-N
SMP-11V-NC
SMP-03V-BC
12VD(+5V)
2
3
179228-3
1
TPED1
TLUD1
S-GND
3
VD(+5VR)
4
VD(+5V)
5
PHR-5
1 VD(+5V)
2
3
179228-3
1
2
PHR-2
1
2
3
179228-3
1
2
3
179228-3
1
212
1
212
2
PHR-2
1
2
3
179228-3
1
2
3
4
5
PHR-5
TPFD3
S-GND
TSPD1
S-GND
VB(+24V)
TLUM2
VD(+5V)
TPFD2
S-GND
VD(+5V)
TTSD
S-GND
VB(+24V)1
TLUM1/
VD(+5V)
TSPD2
S-GND
TPED2
TLUD2
S-GND
VD(+5VR)
VD(+5V)
11
10
9
8
7
6
5
4
3
2
1
18
18
17
17
16
16
15
15
14
14
13
13
9
8
7
6
5
4
3
22
11
10
9
8
7
6
5
4
3
2
1
SMR-11V-N
9
8
7
6
5
4
SMR-18V-BSMP-18V-BC
3
11
SMR-03V-B
TPFCL
5
TMMCLK/
4
TMM-T
3
TMM/
2
GND1
1
+24V
PHR-5
+5V31
MCSPD2
GND2
179228-3
1N.C.
2
GND2
MCSS1
3
4
MCSS2
MCSS35
MCSS4
6
PHR-6
+5V
1
MCLUD
2
3
GND2
179228-3
+5V
1
2
TPFD1
GND2
3
179228-3
+5V
1
TDRS
2
GND2
3
179228-3
+5V
1
MCPED
2
3
GND2
179228-3
2T
MCPWS
1T
MCPWS2
3T
VAREF
TLUM1
TPCL1
TDRS
TPFD2
TPCL2
TLUM2
TAN Sensor PWB
TPED1
TLUD1
MCSPD
MCPWS
TPFD3
TAN Sensor PWB
TPED2
TSPD1
MCLUD
MCPED
TPFD1
TLUD2
TSPD2
TTSD
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 1
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 S ide 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 tr ay 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 tr ay 2 lift-up motor Tandem tray 2 lift-up
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 2
B. MAINTENANCE LIST
(1) MAINTENANCE LIST
Check (Clean, replace, or adjust as necessary.)
u
Clean
F
Replace
b
Adjust , Lubricate
v
Move position
k
Unit name
Paper feed separation section 1 Paper feed rollers
Transport section 2 Transport rollers
Drive section 3 Gears
Other 5 Sensors
1:Replacement reference: Use the counter value of each paper feed port as the replacement reference.
*
Paper feed section pickup roller, paper feed roller: 100K or 1 year
No.
4Belts
Part name
When
calling
100K 200K 300K 400K Remark
uu u u u*
u
u
FFFF
,,,,(Specified position)
uu u u u
uu u u u
4
5
4
5
2
3
3
4
5
3
3
1
5
1
5
2
5
4
1
5
4
2
1
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 3
(2) MAINTENANCE AND PARTS REPLACEMENT
(List of Replacement Parts)
No. Unit Parts
a Paper feed unit 1 Pick up roller
2 Paper feed roller
3 Separate roller
4 Torque limiter
5Belts
6 Upper limit sensor
7 Paper empty sensor
8 Paper transport sensor
9 Side door open/close sensor
10 Transfer rollers
b Tandem tray
paper feed unit
c T rans fer unit 1 Transfer roller
d Multi-purpose
drive unit
e Tandem drive
unit
f Other 1 Rear edge size PWB
1 Pick up roller
2 Paper feed roller
3 Separate roller
4 Torque limiter
5Belts
1 Gears
1 Gears
2Belts
2 Remaining paper quantity sensor
3 Control PWB
4 Sensor PWB
5 Paper transfer sensor
6 Tandem tray open/close sensor
a. Paper feed unit
1) Pull out the multi-purpose tray.
First, pull out the right side of the tray, and then pull out the left side.
b
b
b
u
u
u
u
u
u
u
b
b
b
2) Remove the left door.
2)
1)
u
u
u
,
u
,
u
2)
u
1)
1)
u
u
u
a-5
a
f-2
a-10
a-5
a-9
a-4
a-3
f-4
f-2
f-5
f-2
f-5
f-4
f-3
b-5
b
b-1
f-1
a-6
a-7
a-1
a-2
a-8
a-10
b-6
b-5
b-1
b-2
b-3
b-4
b
c-1
c
c-1
b-1
b-2
b-3
b-4
e-2
e-1
e
e-1
3) Remove the multi-purpose paper feed unit.
7)
8)
6)
3)
6)
4)
5)
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 4
a-1. Pick up roller
a-2. Paper feed roller
a-3. Separate roller
a-4. Torque limiter
1) Pull out the multi-purpose tray.
2) Remove the paper guide.
3) Disengage the roller hook, and remove the roller.
a
a-5. Belts
1) Remove the paper feed unit.
2)
2) Remove the pickup roller and paper feed roller.
3)
When installing the roller, check to ensure that the hook is securely
*
engaged in the groove.
4) After removing the roller, remove the torque limiter.
b
When installing the torque limiter, check to ensure that the pin is
*
fully inserted into the torque limiter groove.
a-6. Upper limit sensor
a-7. Paper empty sensor
a-8. Paper transport sensor
a-9. Side door open/close sensor
1) Remove the paper feed unit.
1)
1)
3)
a
1)
2)
1)
4)
3)
4)
a
4)
3)
a
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 5
a
a-10. Transfer rollers
1) Remove the paper feed unit.
a
b
b
a
b
a
b. Tandem tray paper feed unit
1) Remove the stopper screw, and pull out the large capacity tray.
2)
b-1. Pick up roller
b-2. Paper feed roller
b-3. Separate roller
b-4. Torque limiter
1) Remove the stopper, and pull out the large capacity tray.
2) Disengage the roller hook, and remove the roller and the torque limiter.
• Tandem tray 1
2)
• Tandem tray 2
a
b
a
1)
2) Remove the left door.
1)
2)
3) Remove the tandem paper feed unit.
2)
2)
2)
b
1)
2)
When installing the roller, check to ensure that the hook is securely
*
a
engaged in the groove.
When installing the torque limiter, check to ensure that the pin is fully
*
inserted into the torque limiter groove.
1)
2)
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 6
b-5. Belts
1) Remove the stopper, and pull out the large capacity tray.
• Tandem tray 1
2) Remove the transfer unit.
4)
3)
5)
3)
c-1. Transfer roller
1) Pull out the multi-purpose tray.
a
• Tandem tray 2
c. Transfer unit
1) Remove the left door.
2)
b
d. Multi-purpose drive unit
1) Remove the rear cabinet.
1)
1)
1)
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 7
2)
1)
2) Remove the multi-purpose tray drive section.
f-1. Rear edge size PWB
f-2. Remaining paper quantity sensor
f-3. Control PWB
5)
f-4. Sensor PWB
f-5. Paper transfer sensor
4)
f-6. Tandem tray open/close sensor
1) Remove the rear cabinet.
4)
3)
d-1. Gears
1) Remove the multi-purpose tray drive section.
e. Tandem drive unit
1) Remove the tandem tray drive section.
6)
6)
6)
7)
6)
1)
2)
1)
2) Remove the control PWB and the sensors.
a
a
10)
7)
a
11)
a
8)
7)
10)
a
10)
e-1. Gears
e-2. Belts
2) Remove the tandem tray drive section.
AR-D28/D27/MU2 DISASSEMBLY AND ASSEMBLY, MAINTENANCE
7 – 8
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