Sharp MX-6500N / MX-7500N (serv.man23) Service Manual ▷ View online
MX-7500N MAINTENANCE 9 – 2
2. Display of maintenance execution timing
The message of maintenance execution timing is displayed when each counter reaches the set value.
The display content is "Maintenance execution timing Code:
."
The relations between the messages and the counters are shown below.
A. Maintenance counter
* After execution of maintenance, be sure to execute SIM24-4 to clear the maintenance counter (Total) and the maintenance counter (Color).
B. Primary transfer unit
* After execution of the maintenance, execute SIM24-4 to clear the primary transfer unit print counter, the accumulated number of rotations
counter, and the use day counter.
C. Secondary transfer unit
* After execution of the maintenance, execute SIM24-4 to clear the secondary transfer print counter, the accumulated number of rotations
counter, and the use day counter.
D. Fusing unit
* After execution of the maintenance, execute SIM24-4 to clear the fusing roller counter, the fusing belt counter, the fusing web print counter,
the accumulated rotation number counter, and the use day counter.
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
TA
Maintenance counter (Total)
When the set value of SIM21-1 is reached, or when
90% of the set value of SIM21-1 is reached.
90% of the set value of SIM21-1 is reached.
0 (Print continue)
Enable
1 (Print stop)
CA
Maintenance counter (Color)
When the set value of SIM21-1 is reached, or when
90% of the set value of SIM21-1 is reached.
90% of the set value of SIM21-1 is reached.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
TK1
Primary transfer unit print counter
When 300K is reached.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
TK2
Secondary transfer unit print
counter
counter
When 300K is reaches.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
FK1
Fusing belt print counter
When 300K is reached.
0 (Print continue)
Enable
1 (Print stop)
FK2
Pressure roller print counter
When 300K is reached.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
SIM26-38-B set value
Print JOB Enable/Disable
FK3
Fusing web send counter
When 300K is reached.
0 (Print continue)
Enable
1 (Print continue)
FK3
Fusing web send counter
When the fusing web end detection is ON.
0 (Print continue)
Enable
1 (Print stop)
Disable
MX-7500N MAINTENANCE 9 – 3
E. OPC drum
* After execution of the maintenance, execute SIM24-4 to clear the OPC drum print counter, the accumulated number of rotations counter, and
the use day counter.
F. Developer
* After execution of the maintenance, execute SIM24-4 to clear the developer print counter, the accumulated number of rotations counter, and
the use day counter.
G. Waste toner box
* When the waste toner box is replaced with an empty one, the message disappears.
H. Toner cartridge
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
DK
OPC drum print counter (K)
OPC drum accumulated number of rotations (K)
OPC drum accumulated number of rotations (K)
When 300K sheets is reached, or
when 1,000K rotations is reached.
when 1,000K rotations is reached.
0 (Print continue)
Enable
1 (Print stop)
D (C/M/Y)
OPC drum print counter (C/M/Y)
OPC drum accumulated number of rotations (C/M/Y)
OPC drum accumulated number of rotations (C/M/Y)
When 200K sheets is reached, or
when 1,000K rotations is reached.
when 1,000K rotations is reached.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
SIM26-38-A set value
Print JOB Enable/Disable
VK
Developer print counter (K)
DV unit accumulated number of rotations (K)
DV unit accumulated number of rotations (K)
When 600K sheets is reached, or
when 2,000K rotations is reached.
when 2,000K rotations is reached.
0 (Print continue)
Enable
1 (Print stop)
V (C/M/Y)
Developer print counter (C/M/Y)
DV unit accumulated number of rotations (C/M/Y)
DV unit accumulated number of rotations (C/M/Y)
When 400K sheets is reached, or
when 2,000K rotations is reached.
when 2,000K rotations is reached.
0 (Print continue)
Enable
1 (Print stop)
Code
Counter name
Display condition
Display message
SIM26-38-A
set value
Print JOB
Enable/Disable
—
When near end is detected.
Waste toner full
detection switch ON
detection switch ON
Replacement timing of the
toner collection container is
approaching.
toner collection container is
approaching.
No relation
Enable
—
The pixel count from near end reaches
the specified value.
the specified value.
Specified pixel count
Replace the waste toner
collection box.
collection box.
No relation
Disable
Code
Counter name
Display condition
Display message
SIM26-38-A
set value
Print JOB
Enable/Disable
—
Toner motor rotation time
Specified time of
rotations
rotations
(K/C/M/Y) Prepare a toner
(Near near end)
(Near near end)
No relation
Enable
—
Toner supply amount is decreasing.
Toner remaining
quantity sensor output
quantity sensor output
(K/C/M/Y) Replace the toner
cartridge. (Near end)
cartridge. (Near end)
No relation
Enable
—
The Hopper Remaining Toner after
detection of near end reaches the
specified level.
detection of near end reaches the
specified level.
Specified hopper
remaining count
remaining count
Replace the toner cartridge.
(K) (End)
(K) (End)
No relation
Disable for a JOB which
requires K toner
—
The Hopper Remaining Toner after
detection of near end reaches the
specified level.
detection of near end reaches the
specified level.
Specified hopper
remaining count
remaining count
Replace the toner cartridge.
(C/M/Y) (End)
(C/M/Y) (End)
No relation
Enable for monochrome,
Disable for color
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
