Sharp MX-6500N / MX-7500N (serv.man23) Service Manual ▷ View online
MX-7500N MAINTENANCE 9 – 21
H. Developing section
X: Check (Clean, replace, or adjust according to necessity.)
O: Clean
: Replace
: Adjust
: Lubricate
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
1500K
3000K
Remark
Developing unit
(monochrome)
(monochrome)
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)
(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.
MX-7500N MAINTENANCE 9 – 22
I.
OPC drum section
X: Check (Clean, replace, or adjust according to necessity.)
O: Clean
: Replace
: Adjust
: Lubricate
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
1500K
3000K
Remark
OPC drum unit
(monochrome)
(monochrome)
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.
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
X
X
Clean as needed.
11
Photo conductor Unit
Replace every 3000K.
OPC drum unit
(color)
(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.
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
X
X
Clean as needed.
11
Photo conductor Unit
Replace every 2000K.
MX-7500N MAINTENANCE 9 – 23
1
5
8
4
6
4
2
9
10
7
3
MX-7500N MAINTENANCE 9 – 24
J. Transfer section
X: Check (Clean, replace, or adjust according to necessity.)
O: Clean
: Replace
: Adjust
: Lubricate
Unit
No.
Maintenance parts
When
calling
200K
300K
400K
600K
1500K
3000K
Remark
Primary transfer
unit
unit
1
Primary transfer belt
-
When replacing, apply KYNAR powder
or CKOG-0345DS51(Y toner).
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.
side must be also cleaned.
16
Primary transfer unit
Replace every 3000K.
PTC unit
16
Charger wire
-
Do not touch the wire with bare 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.
side must be also cleaned.
Secondary transfer
unit
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.
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