DOWNLOAD Sharp MX-M623U / MX-M753U (serv.man10) Service Manual ↓ Size: 49.81 MB | Pages: 127 in PDF or view online for FREE

MX-M753N  NOTE FOR SERVICING - iii

When repairing or replacing, be sure to observe the following
items.
1)

When repairing or replacing the LSU, be sure to disconnect
the power plug from the power outlet.

2)

When repairing or replacing the LSU, follow the procedures
described in this Service Manual.

3)

When checking the operations after repairing the LSU, keep all
the parts including the cover installed and perform the opera-
tion check.

4)

Do not modify the LSU.

5)

When visually checking the inside of the machine for the oper-
ation check, be careful not to allow laser beams to enter the
eyes.

If the above precaution is neglected or an undesignated work is
performed, safety may not be assured.

When handling the OPC drum unit, the transfer unit, and the devel-
oping unit, strictly observe the following items.
If these items are neglected, a trouble may be generated in the
copy and print image quality.
(Drum unit)
1)

Avoid working at a place with strong lights.

2)

Do not expose the OPC drum to lights including interior lights
for a long time.

3)

When the OPC drum is removed from the machine, cover it
with light blocking material. (When using paper, use about 10
sheets of paper to cover it.)

4)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the OPC drum surface.

(Transfer unit)
1)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the transfer roller.

(Developing unit)
1)

Be careful not to attach fingerprints, oil, grease, or other for-
eign material on the developing unit.

(Fusing unit)
1)

Be careful not to put fingerprints, oil, grease, or other foreign
material on the fusing roller and the external heating belt.

2)

Do not leave the fusing roller in contact state for a long time.

The screws used in this machine are largely classified into three
kinds.
These kinds are classified according to the shape of the screw
grooves and use positions.
The table below shows the kinds of the screws and the tightening
torques depending on the use position.
When tightening the screws for repair or maintenance, refer to the
table.
However, for the other conditions of tightening screws than speci-
fied on this table, or when a special care is required, the details are
described on the separate page. Refer to the descriptions on such
a case.

NOTE: Especially for the screw fixing positions where there is an

electrode or a current flows, use enough care to tighten
securely to avoid loosening.

m)

cm)

M2.6

Steel plate

0.8 - 1.0

8 - 10

0.6 - 0.7

M3

Steel plate

1.0 - 1.2

10 - 12

0.7 - 0.9

M4

Steel plate

1.6 - 1.8

16 - 18

1.2 - 1.3

m)

cm)

M3

Steel plate 

(Plate thickness 

0.8mm or above)

1.0 - 1.2

10 - 12

0.7 - 0.9

M4

Steel plate 

(Plate thickness 

0.8mm or above)

1.6 - 1.8

16 - 18

1.2 - 1.3

M3

Steel plate 

(Plate thickness 

less than 0.8mm)

0.6 - 0.8

6 - 8

0.4 - 0.6

M4

Steel plate 

(Plate thickness 

less than 0.8mm)

1.2 - 1.4

12 - 14

0.9 - 1.0

m)

cm)

M3

Plastic resin

0.6 - 0.8

6 - 8

0.4 - 0.6

M4

Plastic resin

1.0 - 1.2

10 - 12

0.7 - 0.9

MX-M753N  PRODUCT OUTLINE  1 – 1

MX-M753N

Service Manual

 

STD: Standard provision. OPT: Option
OPT*1: Product key target.

Copier

STD

STD

PCL printer

STD

OPT*

1

PS printer

OPT*

1

OPT*

1

Main body LCD

COLOR WVGA 8.5"

COLOR WVGA 8.5"

FAX

OPT

OPT

Scanner

STD

OPT*

1

Filing (Print hold function)

STD

STD

HDD

STD

STD

DSPF

STD

STD

Automatic duplex

STD

STD

Security

OPT*

1

OPT*

1

Internet Fax

OPT*

1

OPT*

1

MX-FN16

SADDLE STITCH FINISHER

SF-SC11

STAPLE CARTRIDGE

AR-SC3

STAPLE CARTRIDGE

AR-PN4A/B/C/D

PUNCH MODULE

MX-PN10A/B/C/D

PUNCH MODULE

MX-SC10

STAPLE CARTRIDGE

MX-FN15

FINISHER

MX-FN14

FINISHER

MX-CF10

INSERTER

MX-LC10

LARGE CAPACITY TRAY

MX-LCX3N

LARGE CAPACITY TRAY

MX-M623N/M753N
MX-M623U/M753U

DIGITAL MULTIFUNCTIONAL
SYSTEM

MX-M753N  PRODUCT OUTLINE  1 – 2

STD: Standard provision. : Installable. *1: The printer expansion kit is required. *2: No support for some destinations. 
*3: The SharpOSA Utility CD-ROM is not provided. *4: Standard for North America.

Paper feed 
system

LARGE CAPACITY TRAY

MX-LC10





LARGE CAPACITY TRAY

MX-LCX3N





Paper exit 
system

INSERTER

MX-CF10





FINISHER

MX-FN15





SADDLE STITCH FINISHER

MX-FN16





FINISHER

MX-FN14





100 sheets staple

PUNCH MODULE

AR-PN4A/B/C/D





For finisher and saddle stitch 
finisher

PUNCH MODULE

MX-PN10A/B/C/D





For 100 sheets staple finisher

STAPLE CARTRIDGE

SF-SC11





For Finisher and 
Saddle Finisher

STAPLE CARTRIDGE

AR-SC3





For saddle

STAPLE CARTRIDGE

MX-SC10





For 100 sheets staple finisher

Printer 
expansion

PRINTER EXPANSION KIT

MX-PB13

STD





PS3 EXPANSION KIT

MX-PKX1







XPS EXPANSION KIT

MX-PUX1





*

1



The expansion memory board 
is required.

EXPANSION MEMORY BOARD

MX-SMX3





1GB
Required when the XPS 
expansion kit is used.

BARCODE FONT KIT

AR-PF1





Image send 
expansion

FACSIMILE EXPANSION KIT

MX-FXX2



*

2



*

2

STAMP UNIT

AR-SU1



*

2



*

2

STAMP CARTRIDGE

AR-SV1



*

2



*

2

INTERNET FAX EXPANSION KIT

MX-FWX1







NETWORK SCANNER EXPANSION KIT

MX-NSX1

STD





ENHANCED COMPRESSION KIT

MX-EBX3





Authentication/
Security

DATA SECURITY KIT

MX-FR22U







Commercial version

DATA SECURITY KIT

MX-FR22







Authentication version

Application/
Solution

SHARPDESK 1 LICENSE KIT

MX-USX1





SHARPDESK 5 LICENSE KIT

MX-USX5





SHARPDESK 10 LICENSE KIT

MX-US10





SHARPDESK 50 LICENSE KIT

MX-US50





SHARPDESK 100 LICENSE KIT

MX-USA0





APPLICATION INTEGRATION MODULE

MX-AMX1







APPLICATION COMMUNICATION MODULE

MX-AMX2

STD*

3

/





EXTERNAL ACCOUNT MODULE

MX-AMX3

STD*

3

/





KEYBOARD

MX-KBX2

STD/*

4



MX-M753N  SPECIFICATIONS  2 – 1

MX-M753N

Service Manual

 

* It may differ depending on the machine conditions.

* It may differ depending on the environment.
* Measuring conditions: A4 (8.5" x 11")

*1: Switched by the service simulation setting. Postcard is set Low

before shipment.

*

2: After completion of discharge of paper outside of the machine,

the next paper is fed. (The values are reference values.)

NOTE: Check the shape of the power plug of the machine, and

insert it into a power outlet of the acceptable shape.

*1: When the power supply is turned on, when the dehumidification 

heater is OFF.

Type

Desktop

Photo-conductor kind

OPC (Drum diameter: 

80mm)

Copying method

Electronic photo (Laser)

Developing system

Dry, 2-component magnetic brush development

Charging system

Charged saw-tooth method

Transfer system

Transfer belt

Cleaning system

Counter blade

Fusing system

Heat roller

Outer dimension (W x D x H)

728 x 683 x 1213mm

Machine dimension with the 
bypass tray extended 
(W x D).

1026 x 683mm

Weight

Main unit

Approx. 190kg

Warm-up time

30 seconds or less

Pre-heat

Yes

Platen

4.0 second

3.5 second

DSPF

6.4 second

5.9 second

Resolution

Writing
Copy: 600 x 600dpi
Print: 600 x 600dpi 

1200 x 1200dpi

Gradation

Equivalent to 256 gradation

A3

289 x 412mm

11" x "17

271 x 424mm

B4

242 x 356mm

8.5" x "14

208 x 348mm

A4

202 x 289mm

8.5" x "13.5

208 x 335mm

B5

174 x 249mm

8.5" x "13.4

208 x 332mm

A5

140 x 202mm

8.5" x "13

208 x 322mm

Postcard

92 x 140mm

8.5" x "11

208 x 271mm

8K

262 x 382mm

Executive 
(7.25" x "10.5)

183 x 259mm

16K

187 x 262mm

5.5" x "8.5

132 x 208mm

Void area Image loss

Lead edge: 4mm or less
Rear edge: 4 mm or less
FR total: 8mm or less

Plain 
paper

A3, 11" x 17", 8K

34

39

B4, 8.5" x 14", 8.5" x 13", 8.5" x 13.4", 
8.5" x 13.5"

39

45

A4R, 8.5" x 11"R, 16KR

45

48

B5R, 7.25" x 10.5"R
A5R, 5.5" x 8.5"R

45

48

A4, B5, 8.5" x 11", 16K

62

75

Extra

34

39

Heavy 
paper

A4, B5, 8.5" x 11", 16K (Tray 3, 4)

43

43

Extra (Tray 4)

22

22

Plain 
paper

A3, 11" x 17", 8K

34

39

B4, 8.5" x 14", 8.5" x 13", 8.5" x 13.4", 
8.5" x 13.5"

39

45

A4, 8.5" x 11", 16K, B5

62

75

B5R, 7.25" x 10.5"R

45

48

A4R, 16KR, 8.5" x 11"R
A5R, 5.5" x 8.5"R

45

48

Extra

34

39

Heavy 
paper

A4, 8.5" x 11", 16K, B5

43

43

Extra

22

22

Postcard HIGH *

1

32

32

Postcard LOW *

2

21

21

OHP

A4, 8.5" x 11"

43

43

A4R, 8.5" x 11"R

31

31

Voltage / Current

100 - 127V 16A USA:20A

220 - 240V 8A

Frequency

50/60Hz

Power source code

Fixed type 
(Direct connection)

Inlet

Power switch

2 switches 
(Primary switch: in the front cover; Secondary 
switch: the operation panel)

Max. Rated Power 
Consumption *1

1.8kW

1.84kW

Moving time to Pre-heat mode

1 minutes (default)

Moving time to Sleep mode

1 minutes (default)