Sharp MX-6500N / MX-7500N (serv.man23) Service Manual ▷ View online
MX-7500N MAINTENANCE 9 – 4
3. Maintenance list
X: Check (Clean, replace, or adjust according to necessity.)
O: Clean
: Replace
: Adjust
: Lubricate
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark
DSPF
section
section
Document
feed tray unit
feed tray unit
1
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Document
feed unit
feed unit
2
Document pickup roller
O
O
Replace according to each paper
feed counter value: Replace at 100K
or after one-year use.
feed counter value: Replace at 100K
or after one-year use.
3
Paper feed roller
O
O
4
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Lamp unit
5
Second scan section,
scanning glass
scanning glass
O
O
6
Reflector
O
O
7
Scanner lamp
O
O
Air-blow the LED section.
Optical unit
8
Mirror
O
O
9
Lens
O
O
10
CCD
O
O
DSPF unit
11
Separation roller
O
O
Replace according to each paper
feed counter value: Replace at 100K
or after one-year use.
feed counter value: Replace at 100K
or after one-year use.
12
Torque limiter
X
X
Replace according to each paper
feed counter value: 800K
feed counter value: 800K
13
No. 1 registration roller
O
O
14
Transport roller 1
O
O
15
No. 2 registration roller
O
O
16
Transport roller 2
O
O
17
Transport roller 3
O
O
18
Paper exit roller
O
O
19
No. 1 scanning plate
O
O
20
No. 2 scanning section
white reference glass
white reference glass
O
O
21
Discharge brush
X
X
Replacement reference:
When the brush bundle is
remarkably deformed.
When the brush bundle is
remarkably deformed.
22
OC mat
O
O
23
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Drive unit
24
Gears
X
X
Apply to the specified position as
needed when checking.
(UKOG-0299FCZZ)
needed when checking.
(UKOG-0299FCZZ)
25
Belts
-
X
Transport
drive unit
drive unit
26
Belts
-
X
Scanner
section
section
Scanner unit
1
Table glass
O
O
2
SPF glass
O
O
3
Rails
Apply to the specified position.
4
Drive belt
X
X
5
Drive wire
X
X
6
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Lamp unit
7
Mirror
O
O
8
Reflector
O
O
9
Scanner lamp
O
O
Air-blow the LED section.
Mirror unit
10
Mirror
O
O
CCD unit
11
Lens
O
O
12
CCD
O
O
Tray
paper
feed
section
paper
feed
section
Tandem
paper feed
tray
paper feed
tray
1
Paper pickup roller
X
O
Replace according to each paper
feed counter value: Replace at 200K
or after one-year use.
feed counter value: Replace at 200K
or after one-year use.
2
Paper feed roller
X
O
3
Separation roller
X
O
4
Torque limiter
X
X
Replace according to each paper
feed counter value: 800K
feed counter value: 800K
5
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Solenoid(T1PUS)
X
X
Replace every 3000K.
-
Solenoid(T1PUS)
X
X
Replace every 3000K.
-
Transport paper guides
O
O
MX-7500N MAINTENANCE 9 – 5
Tray
paper
feed
section
paper
feed
section
Tray paper
feed unit
feed unit
6
Paper pickup roller
X
O
Replace according to each paper
feed counter value: Replace at 100K
or after one-year use.
feed counter value: Replace at 100K
or after one-year use.
7
Paper feed roller
X
O
8
Separation roller
X
O
9
Torque limiter
X
X
Replace according to each paper
feed counter value: 800K
feed counter value: 800K
10
Transport roller 9, 10
X
O
11
Transport roller 2, 3
X
O
12
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Solenoid(C3PUS)
X
X
Replace every 2000K.
-
Solenoid(C4PUS)
X
X
Replace every 2000K.
-
Transport paper guides
O
O
Paper feed
tray
tray
13
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Manual
paper
feed
section
paper
feed
section
Manual
paper feed
unit
paper feed
unit
1
Paper pickup roller
X
O
Replace according to each paper
feed counter value: Replace at 100K
or after one-year use.
feed counter value: Replace at 100K
or after one-year use.
2
Paper feed roller
X
O
3
Separation roller
X
O
4
Torque limiter
X
X
Replace according to each paper
feed counter value: 800K
feed counter value: 800K
5
Transport roller 8
X
O
6
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
7
Gate Solenoid
X
X
Replace every 3000K.
8
Pick up Solenoid
X
X
Replace every 3000K.
-
Transport paper guides
O
O
Paper
transport
section
transport
section
Interface unit
1
Transport roller 6
X
O
X
2
Transport roller 7
X
O
X
-
Follower roller
X
O
X
3
Sensors
X
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Transport paper guides
O
O
Right vertical
transport
unit
transport
unit
4
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Transport paper guides
O
O
-
Follower roller
X
O
X
Vertical
transport
unit
transport
unit
5
Transport roller 11
X
O
6
Transport roller 12
X
O
-
Follower roller
X
O
X
7
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Transport paper guides
O
O
LCC
transport
unit
transport
unit
8
Transport roller 14
X
O
9
Transport roller 15
X
O
10
Transport roller 16
X
O
-
Follower roller
X
O
X
11
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Transport paper guides
O
O
PS lower
unit
unit
12
Transport roller 13
X
O
-
Follower roller
X
O
X
-
Transport paper guides
O
O
PS unit
13
Transport roller 17
X
O
14
Registration roller (drive)
X
O
15
Registration roller (idle)
X
O
-
Follower roller
X
O
X
16
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
PDFS sensor needs to be cleaned
by air.
other side must be also cleaned.
PDFS sensor needs to be cleaned
by air.
17
Paper dust removing unit
O
-
Transport paper guides
O
O
LSU
section
section
LSU
1
Dust-proof glass
O
O
LSU
cleaning rod
cleaning rod
2
Cleaning base
X
Toner supply section
1
Toner cartridge
User replacement for every toner empty.
The storage period is 2 years.
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark
MX-7500N MAINTENANCE 9 – 6
Developi
ng
section
ng
section
Developing
unit
(monochrom
e)
unit
(monochrom
e)
1
Developer
X
Replace at 600K or at the specified
rotation number.
The storage period is 2 years.
rotation number.
The storage period is 2 years.
2
DV blade
X
X
Replace as needed.
3
DV side seals F/R
X
X
Replace as needed.
4
Toner filter
X
5
Bias pin
X
X
6
Connector
X
X
7
Doctor side seal
X
X
8
Upper DV Blade
X
X
9
Developing unit
Replace every 3000K.
Developing
unit (color)
unit (color)
1
Developer
X
Replace at 400K or at the specified
rotation number.
The storage period is 2 years.
rotation number.
The storage period is 2 years.
2
DV blade
X
X
Replace as needed.
3
DV side seals F/R
X
X
Replace as needed.
4
Toner filter
X
5
Bias pin
X
X
6
Connector
X
X
7
Doctor side seal
X
X
8
Upper DV Blade
X
X
9
Developing unit
Replace every 2000K.
OPC
drum
section
drum
section
OPC drum
unit
(monochrom
e)
unit
(monochrom
e)
1
Drum
-
Replace according to the drum
counter value or when the specified
rotation number is reached.
The storage period is 3 years.
counter value or when the specified
rotation number is reached.
The storage period is 3 years.
2
Cleaner blade
-
Recommendable to replace
according to the blade counter value
or when the specified rotation
number is reached.
according to the blade counter value
or when the specified rotation
number is reached.
3
MC unit
X
4
Side seals F/R
-
X
Replace as needed.
5
Toner reception seat
-
X
Replace as needed.
6
Cleaning brush
-
X
Check for clogging of the brush. If
cleaning cannot delete the trouble,
replace.
cleaning cannot delete the trouble,
replace.
7
DL unit
(Discharge lamp unit)
(Discharge lamp unit)
-
X
Clean the DL protection cover of the
light shielding surface as needed.
light shielding surface as needed.
8
TCDL unit
(After-transfer discharge
lamp unit)
(After-transfer discharge
lamp unit)
-
X
Clean the TCDL protection cover of
the light shielding surface as
needed.
the light shielding surface as
needed.
9
HP sensor
X
X
Clean as needed.
10
Process suction port
moltopren
moltopren
X
X
Clean as needed.
11
Photo conductor Unit
Replace every 3000K.
OPC drum
unit (color)
unit (color)
1
Drum
-
Replace according to the drum
counter value or when the specified
rotation number is reached.
The storage period is 3 years.
counter value or when the specified
rotation number is reached.
The storage period is 3 years.
2
Cleaner blade
-
Recommendable to replace
according to the blade counter value
or when the specified rotation
number is reached.
according to the blade counter value
or when the specified rotation
number is reached.
3
MC unit
X
4
Side seals F/R
-
X
Replace as needed.
5
Toner reception seat
-
X
Replace as needed.
6
Cleaning brush
-
X
Check for clogging of the brush. If
cleaning cannot delete the trouble,
replace.
cleaning cannot delete the trouble,
replace.
7
DL unit
(Discharge lamp unit)
(Discharge lamp unit)
-
X
Clean the DL protection cover of the
light shielding surface as needed.
light shielding surface as needed.
8
TCDL unit
(After-transfer discharge
lamp unit)
(After-transfer discharge
lamp unit)
-
X
Clean the TCDL protection cover of
the light shielding surface as
needed.
the light shielding surface as
needed.
9
HP sensor
X
X
Clean as needed.
10
Process suction port
moltopren
moltopren
X
X
Clean as needed.
11
Photo conductor Unit
Replace every 2000K.
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark
MX-7500N MAINTENANCE 9 – 7
Transfer
section
section
Primary
transfer unit
transfer unit
1
Primary transfer belt
-
When replacing, apply KYNAR
powder or CKOG-0345DS51(Y
toner).
powder or CKOG-0345DS51(Y
toner).
2
Primary transfer cleaner
blade
blade
-
When 300K is reached, replace
together with the primary transfer
belt.
together with the primary transfer
belt.
3
Primary transfer roller
-
X
Replace as needed.
4
Primary transfer belt
drive gear
drive gear
-
X
Replace as needed.
5
Primary transfer belt
drive roller
drive roller
-
O
Clean with alcohol.
6
Primary transfer belt
follower roller
follower roller
-
O
Clean with alcohol.
7
Primary transfer belt
tension roller
tension roller
-
O
Clean with alcohol.
8
Primary transfer idle
roller
roller
-
O
Clean with alcohol.
9
PTC opposed roller
-
O
Clean with alcohol.
10
Registration backup roller
-
O
Clean with alcohol.
11
Transfer separation pawl
-
Replace together with the primary
transfer belt.
transfer belt.
12
Y auxiliary roller
-
O
Clean with alcohol.
13
Primary transfer cleaner
seals F/R
seals F/R
-
X
Replace as needed.
14
Primary transfer toner
reception seal
reception seal
-
X
Replace as needed.
15
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
16
Primary transfer unit
Replace every 3000K.
Transfer
section
section
PTC unit
16
Charger wire
-
Do not touch the wire with bare
hand.
hand.
17
PTC cleaner
-
18
PTC cleaner B
-
Registration
sensor unit
sensor unit
19
Image registration/
density sensor
density sensor
-
O
20
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
Secondary
transfer unit
transfer unit
21
Secondary transfer belt
-
Never use alcohol or solvents for
cleaning.
When replacing apply CKOG-
0345DS51(Y toner)
cleaning.
When replacing apply CKOG-
0345DS51(Y toner)
22
Secondary transfer
cleaner blade
cleaner blade
-
When 300K is reached, replace
together with the secondary transfer
belt.
together with the secondary transfer
belt.
23
Secondary transfer roller
-
X
Replace as needed.
24
Secondary transfer idle
gear
gear
-
X
Replace as needed.
25
Secondary transfer belt
drive roller
drive roller
-
O
Clean with alcohol.
26
Secondary transfer belt
follower roller
follower roller
-
O
Clean with alcohol.
27
Secondary transfer blade
contact roller
contact roller
-
O
Clean with alcohol.
28
Secondary transfer
backup roller
backup roller
-
O
Clean with alcohol.
29
Secondary transfer
cleaning brush roller
cleaning brush roller
-
O
30
Secondary transfer
cleaner seals F/R
cleaner seals F/R
-
X
Replace as needed.
31
Secondary transfer toner
reception seal
reception seal
-
X
Replace as needed.
32
Secondary transfer
cleaning roller
cleaning roller
-
When 300K is reached, replace
together with the secondary transfer
belt.
together with the secondary transfer
belt.
33
Secondary transfer unit
Replace every 3000K.
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark