Sharp MX-6500N / MX-7500N (serv.man11) Service Manual ▷ View online
MX-7500N NOTE FOR SERVICING - iii
5. Note for repairing/replacing the LSU
When repairing or replacing, be sure to observe the following
items.
- When repairing or replacing the LSU, be sure to disconnect the
- When repairing or replacing the LSU, be sure to disconnect the
power plug from the power outlet.
- When repairing or replacing the LSU, follow the procedures
described in this Service Manual.
- When checking the operations after repairing the LSU, keep all
the parts including the cover installed and perform the operation
check.
- Do not modify the LSU.
- When visually checking the inside of the machine for the opera-
- When visually checking the inside of the machine for the opera-
tion check, be careful not to allow laser beams to enter the eyes.
If the above precaution is neglected or the LSU is modified, ones
safety may be at risk.
6. Note for handling the drum unit, the
transfer unit, the developing unit
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 problem may be generated in the
If these items are neglected, a problem may be generated in the
copy and print image quality.
Drum unit
- Avoid working at a place with strong lights.
- Do not expose the OPC drum to lights including interior lights for
Drum unit
- Avoid working at a place with strong lights.
- Do not expose the OPC drum to lights including interior lights for
a long time.
- 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.)
- Be careful not to attach fingerprints, oil, grease, or other foreign
material on the OPC drum surface.
Transfer unit
- Be careful not to leave fingerprints, oil, grease, or other foreign
- Be careful not to leave fingerprints, oil, grease, or other foreign
material on the transfer roller, primary transfer belt, and the sec-
ondary transfer belt.
Developing unit
- Be careful not to leave fingerprints, oil, grease, or other foreign
- Be careful not to leave fingerprints, oil, grease, or other foreign
material on the developing unit.
Fusing unit
- Be careful not to attach finger prints or foreign materials on the
- Be careful not to attach finger prints or foreign materials on the
fusing belt and the pressure roller.
7. Screw tightening torque
The screws used in this machine are largely classified into three
types.
These types are classified according to the shape of the screw
These types are classified according to the shape of the screw
grooves and use positions.
The table below shows the types of the screws and the tightening
The table below shows the types of the screws and the tightening
torques depending on the use position.
When tightening the screws for repair or maintenance, refer to the
When tightening the screws for repair or maintenance, refer to the
table.
However, for the other conditions of tightening screws than speci-
However, for the other conditions of tightening screws than speci-
fied on this table, or under special circumstances, the details are
described on the separate page. Refer to the descriptions on such
an exception.
Especially for the screw fixing positions where there is an electrode
Especially for the screw fixing positions where there is an electrode
or a current flows, use enough care to tighten securely to avoid
loosening.
Screw kinds and tightening torques
Normal screws, set screws (including step screws)
Normal screws, set screws (including step screws)
Tapping screws (for iron)
Tapping screw (for plastic)
Screw
diameter
Material to be
fixed
Tightening
torque
(Nm)
Tightening
torque
(kgfcm)
Tightening
torque
(lbft)
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
Screw
diameter
Material to be
fixed
Tightening
torque
(Nm)
Tightening
torque
(kgfcm)
Tightening
torque
(lbft)
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
Screw
diameter
Material to be
fixed
Tightening
torque
(Nm)
Tightening
torque
(kgfcm)
Tightening
torque
(lbft)
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-7500N PRODUCT OUTLINE 1 – 1
MX-7500N
Service Manual
[1] PRODUCT OUTLINE
1. System diagram
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MX-ST10
HIGH CAPACITY
STACKER
STACKER
MX-CA10
PAPER CART
MX-CA10
PAPER CART
MX-ST10
HIGH CAPACITY
STACKER
STACKER
MX-FD10
FOLDING UNIT
MX-RB13
RELAY UNIT
MX-PN13
A/B/C/D
PUNCH
MODULE
MODULE
MX-FN22
SADDLE STTICH
FINISHER
FINISHER
MX-FN21
FINISHER
MX-TM10
TRIMMING
MODULE
MODULE
MX-FD10
FOLDING UNIT
MX-RB13
RELAY UNIT
MX-PN13
A/B/C/D
PUNCH
MODULE
MODULE
MX-FN22
SADDLE STTICH
FINISHER
FINISHER
MX-FN21
FINISHER
MX-TM10
TRIMMING
MODULE
MODULE
MX-PN13
A/B/C/D
PUNCH
MODULE
MODULE
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MODULE
*1: Option for 2nd MX-LC13
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1
: ‘13/Nov
1
1
MX-7500N PRODUCT OUTLINE 1 – 2
2. Option list
*1: Option for North America.
*2: Standard for North America and Europe.
*3: Standard for North America.
*2: Standard for North America and Europe.
*3: Standard for North America.
Model name
Name
MX-6500N
MX-7500N
MX-7500N
Remarks
Paper feed system
MX-LC12
LARGE CAPACITY TRAY
OPT
A4
MX-LCX3N
LARGE CAPACITY TRAY
OPT
A3
MX-MF10
MULTI BYPASS TRAY
OPT
For Main unit
MX-LT10
LONG PAPER FEEDING TRAY
OPT
MX-LC13
LARGE CAPACITY TRAYS
OPT
A3
MX-RB14
PAPER PASS UNIT
OPT
For large capacity trays
MX-RB17
CONNECTION MODULE
OPT
For large capacity trays
MX-MF11
MULTI BYPASS TRAY
OPT
For large capacity trays
Paper exit system
MX-TR14
EXIT TRAY UNIT
OPT
MX-TU14
EXIT TRAY CABINET
OPT(*3)
Cannot install the MX-TU14 and the MX-RB12
concurrently.
concurrently.
MX-RB12
PAPER PASS UNIT
OPT
Cannot install the MX-RB12 and the MX-TU14
concurrently.
concurrently.
MX-RB13
RELAY UNIT
OPT
For 100 sheets binding
MX-FN21
FINISHER
OPT
100 sheets binding
MX-FN22
SADDLE STITCH FINISHER
OPT
100 sheets binding/saddle 25 sheets binding
MX-PN13A
PUNCH MODULE
OPT
For 100 sheets binding
MX-PN13B
PUNCH MODULE
OPT
For 100 sheets binding
MX-PN13C
PUNCH MODULE
OPT
For 100 sheets binding
MX-PN13D
PUNCH MODULE
OPT
For 100 sheets binding
MX-TM10
TRIMMING MODULE
OPT
For 100 sheets binding saddle
MX-CF11
INSERTER
OPT
MX-ST10/
CA10
CA10
HIGH CAPACITY STACKER/PAPER CART
OPT
MX-RB15
CURL CORRECTION UNIT
OPT
MX-FD10
FOLDING UNIT
OPT
MX-GBX2
GBC PUNCH UNIT
OPT (Local)
MX-BM50
PRODUCTION BOOKLET MAKER
OPT (Local)
MX-CF50
COVER FEEDER
OPT (Local)
MX-TM50
TRIMMER
OPT (Local)
MX-FD50
SQUARE FOLD
OPT (Local)
MX-XB50
RAIL UNIT
OPT (Local)
Printer expansion
MX-PUX1
XPS EXPANSION KIT
OPT
EFI
MX-PE10
Fiery Server
OPT (Local)
MX-PX10
Interface Kit
OPT
Image send expansion
MX-PF10
BARCODE FONT KIT
OPT
AR-SU1
STAMP UNIT
OPT
MX-EB11
ENHANCED COMPRESSION KIT
OPT
Authentication/
Security
Security
MX-FR43U
DATA SECURITY KIT
OPT
Non-authentication version
MX-EC50
CARD SOLUTION KIT
OPT(*1)
Option set for North America.
MX-EB15
MIRRORING KIT
OPT
Application/
Solution
Solution
MX-AMX1
APPLICATION INTEGRATION MODULE
OPT
MX-AMX2
APPLICATION COMMUNICATION MODULE
OPT(*3)
Standard for North America.
MX-AMX3
EXTERNAL ACCOUNT MODULE
OPT(*2)
MX-AM10
WEB BROWSING EXPANSION KIT
OPT(*3)
Standard for North America.
Others
MX-KB16
KEYBOARD
OPT(*3)
Standard for North America.
MX-SL10 N
STATUS INDICATOR
OPT
MX-SCX1
STAPLE CARTRIDGE
OPT
For saddle staple (100 sheets saddle finisher)
MX-SCX2
STAPLE CARTRIDGE
OPT
For staple
(100 sheets saddle finisher / 100 sheets finisher)
(100 sheets saddle finisher / 100 sheets finisher)
AR-SV1
STAMP CARTRIDGE
OPT
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1
: ‘13/Nov
1
MX-7500N SPECIFICATIONS 2 – 1
MX-7500N
Service Manual
[2] SPECIFICATIONS
1. Basic specifications
A. Engine Specification
B. Engine speed (ppm)
(1)
Tray 1 - 4, LCC, LCT
Plain Paper
Heavy Paper 1/2 (Low speed 1)
Photo-conductor
kind
kind
OPC (Diameter: Black:
50mm Color (Y/M/C):
50mm x3 lines)
Copying method
Electronic photo (Laser)
Developing system
Dry, 2-component magnetic brush development
Developer refresh system
Developer refresh system
Charging system
Charged saw-tooth method
Transfer system
Intermediate/secondary transfer belt
Separation system
Natural separation method
* Sub separation claw is equipped.
* Sub separation claw is equipped.
Cleaning system
Counter blade
Fusing system
Belt method
Waste toner
disposal
disposal
No toner recycling system / Waste toner bottle
system
system
Toner supply during
operation
operation
Enabled
Outer Color
Pastel white, natural wave design
Recommended
Paper
Paper
HAMMERMILL Laser Print (24lb)
Mondi Color Copy (90g)
Mondi Color Copy (90g)
Paper
Paper Tray
75cpm machine
65cpm machine
Mono
Color
Mono
Color
13X19.2(19)
LCT/A3LCC/LCT MFT
38
38
34
34
A4LCC
N/A
N/A
N/A
N/A
Tray3 to 4
N/A
N/A
N/A
N/A
A3W
LCT/A3LCC/LCT MFT
40
40
36
36
Tray3 to 4
34
34
32
32
A3/11" x 17"/8K
LCT/A3LCC/LCT MFT
42
42
38
38
A4LCC
N/A
N/A
N/A
N/A
Tray3 to 4
36
36
33
33
B4/8.5" x 14"/8.5" x 13"/8.5" x 13.4"/8.5" x
13.5"
13.5"
LCT/A3LCC/LCT MFT
48
48
43
43
Tray3to 4
41
41
37
37
A4/B5/16K
ALL
75
75
65
65
8.5" x 11"
ALL
75
75
65
65
A4R/8.5" x 11"R/B5R/7.25" x 10.5"R/16KR
LCT/LCT MFT
57
57
51
51
Tray3to 4
47
47
43
43
A4R/8.5" x 11"R
A3LCC
57
57
51
51
A5R/5.5" x 8.5"R
LCT MFT
57
57
51
51
Tray4
47
47
43
43
Extra
Tray1 to 4
34
34
31
31
A4W
LCT/LCT MFT
69
69
62
62
Tray3to 4
56
56
51
51
Custom size (Sub scanning direction: 297mm
or less)
or less)
LCT/LCT MFT
57
57
51
51
Tray4
47
47
43
43
Custom size (Sub scanning direction: 297mm
or more)
or more)
LCT/LCT MFT
37
37
33
33
Tray4
34
34
31
31
Paper
75cpm machine
65cpm machine
Monochrome
Color
Monochrome
Color
13X19.2(19)/Extra
21
21
21
21
A3W/SRA3
22
22
22
22
A3/B4/8K/8.5" x 14"/8.5" x 13.5"/8.5" x 13.4"/8.5" x 13"/11" x 17"
23
23
23
23
A4/B5/16K/A5R/8.5" x 11"/5.5" x 8.5"R
38
38
38
38
A4R/8.5" x 11"R/16KR/B5R/7.25" x 10.5"R
31
31
31
31
SRA4/A4W
37
37
37
37
Custom size (Sub scanning direction: 297mm or less)
31
31
31
31
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