Sharp MX-6500N / MX-7500N (serv.man23) Service Manual ▷ View online
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
MX-7500N MAINTENANCE 9 – 8
Waste toner collection
section
section
1
Waste toner box
X
X
Replacement reference: 100K under
the standard environmental
conditions (20 - 25degrees C 65 +/-
5%) at the color ratio of "7 : 3 (Black
: Color)" in the print ratio 5%
document mode.
the standard environmental
conditions (20 - 25degrees C 65 +/-
5%) at the color ratio of "7 : 3 (Black
: Color)" in the print ratio 5%
document mode.
2
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
3
Gear
X
X
4
Bearing
X
X
Fusing
section
section
Fusing unit
1
Fusing belt
-
2
Fusing roller
-
When replacing, apply grease
(UKOG-0235FCZZ) to the shaft
section.
(UKOG-0235FCZZ) to the shaft
section.
3
Pressure roller
-
When replacing, apply grease
(UKOG-0235FCZZ) to the shaft
section.
(UKOG-0235FCZZ) to the shaft
section.
4
Separation plate
-
Clean when a foreign material is
attached.
attached.
5
Lower separation pawl
-
Clean when a foreign material is
attached.
attached.
6
Meandering suppress
collar
collar
-
7
Heating roller
-
8
Fusing roller bearing
-
9
Heating roller bearing
-
10
Pressure roller bearing
-
11
Heat-insulating bush
-
12
Pressure roller gear
-
13
24T Gear
-
Including the pressure roller kit.
14
Main thermistor
X
X
15
Sub thermistor 1
X
X
16
Sub thermistor 2
X
X
Replace or clean with alcohol as
needed.
needed.
17
Lower thermistor 1
X
X
18
Lower thermistor 2
X
X
Replace or clean with alcohol as
needed.
needed.
19
Transport roller 18
X
O
20
Gears
Apply to the specified position.
21
Web roller
-
22
Web guide shaft
-
23
Web pressure roller
-
24
Web pressure roller
bearing
bearing
-
25
Fusing paper exit
detector
detector
-
X
26
Fusing front paper pass
detector
detector
-
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
27
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
Paper guides
O
O
-
Fusing unit
-
Replace at 300K when replacing the
unit.
unit.
-
Web cleaning motor
-
Replace at 300K when replacing the
unit.(Including the unit exchange)
unit.(Including the unit exchange)
Paper
exit/
reverse
section
exit/
reverse
section
Right door
unit
unit
1
Transport roller 19
X
O
X
2
Transport roller 20
X
O
X
3
Transport roller 21
X
O
X
4
Transport roller 22
X
O
X
5
Paper exit roller 2
X
O
X
-
Follower roller
X
O
X
6
Discharge brush
X
X
7
Sensors
X
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
-
ADU reverse gate
X
O
X
-
Transport paper guides
O
O
Paper exit
unit
unit
8
Paper exit roller 1
X
O
X
-
Follower roller
X
O
X
9
Discharge brush
X
X
10
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
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark
MX-7500N MAINTENANCE 9 – 9
Drive
section
section
Tandem
paper feed
drive unit
paper feed
drive unit
1
Gears
-
X
Apply to the specified position as
needed when checking.
needed when checking.
2
Belts
-
X
Vertical transport clutch
upper (PTRC2)
upper (PTRC2)
-
X
Paper feed clutch
(T1PUC)
(T1PUC)
-
X
Paper feed clutch
(T2PUC)
(T2PUC)
-
X
Paper transport clutch
(TTRC)
(TTRC)
-
X
Paper feed
drive unit
drive unit
3
Gears
-
X
Apply to the specified position as
needed when checking.
needed when checking.
4
Belts
-
X
Paper feed clutch
(C3PUC)
(C3PUC)
-
X
Paper feed clutch
(C4PUC)
(C4PUC)
-
X
Vertical transport clutch
lower (PTRC1)
lower (PTRC1)
-
X
Transport
drive unit
drive unit
5
Gears
-
X
Apply to the specified position as
needed when checking.
needed when checking.
6
Belts
-
X
Paper feed clutch
(MPUC)
(MPUC)
-
X
Main drive
unit (BK)
unit (BK)
7
Gears
-
X
Apply to the specified position as
needed when checking.
needed when checking.
8
Shaft earth sections
-
X
Apply to the specified position as
needed when checking.
needed when checking.
9
Belts
-
X
10
Sensors
-
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
DV clutch
-
X
Main drive
unit (CL)
unit (CL)
11
Gears
-
X
Apply to the specified position as
needed when checking.
needed when checking.
12
Shaft earth sections
-
X
Apply to the specified position as
needed when checking.
needed when checking.
13
Sensors
-
X
For the reflection-type sensor, the
other side must be also cleaned.
other side must be also cleaned.
DV clutch
-
X
Other
14
Fusing motor
-
X
Replace at the specified number of
rotations: about 2,300K.
rotations: about 2,300K.
Filter section
1
Deodorant filter
X
2
Toner filter
X
3
Ozone filter
X
Section
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
2000K
3000K
Remark
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