Sharp MX-1800N (serv.man17) Service Manual ▷ View online
MX-1800N MAINTENANCE 9 – 1
MX-1800N
Service Manual
[9] MAINTENANCE
1. Maintenance system table
: Check (Clean, replace, or adjust according to necessity.) {: Clean : Replace
: Adjust ✩: Lubricate : Shift the position.
(Color supply)
(Monochrome supply/Mechanical parts)
Unit name
Part name
When
calling
40
K
80
K
120
K
160
K
200
K
240
K
280
K
320
K
360
K
400
K
~
1200
K
Remark/Refer to
the Parts Guide.
the Parts Guide.
Block/Item No.
(Only the
replacement parts
are described.)
Drum
peripheral
(Color)
peripheral
(Color)
Drum
Cleaning blade
Cleaning blade
(P/G No.: [24]-14)
Main charger unit
(P/G No.: [24]-2)
Toner stirring sheet
(P/G No.: [24]-42)
Toner stirring plate
(P/G No.: [24]-45)
Side seal F/R
Toner reception seal
Toner reception seal
Developing
section
section
Developer (C/M/Y)
DV blade N kit
(C/M/Y)
DV blade N kit
(C/M/Y)
(P/G No.: [22]-22)
DV side seal F/R
(C/M/Y)
(C/M/Y)
(P/G No.: [23]-26,
[23]-15)
[23]-15)
Toner filter unit
(P/G No.: [22]-37)
Toner cartridge
(C/M/Y)
(C/M/Y)
User replacement for every toner empty (or the specified traveling distance).
Bias pin/Connector
Unit name
Part name
When
calling
80
K
160
K
240
K
320
K
400
K
480
K
560
K
640
K
720
K
800
K
~
1200
K
Remark/Refer to
the Parts Guide.
Block/Item No.
(Only the
replacement parts
are described.)
Drum
peripheral
peripheral
Drum
Cleaning blade
Cleaning blade
(P/G No.: [24]-14)
Main charger unit
(P/G No.: [24]-2)
Toner stirring sheet
(P/G No.: [24]-42)
Toner stirring plate
(P/G No.: [24]-45)
Side seal F/R
Toner reception seal
Waste toner box
Toner reception seal
Waste toner box
Each color 5%
coverage,
color ratios 25%
coverage,
color ratios 25%
LSU
Dust proof glass
{
{
{
{
{
{
{
{
{
{
{
{
{
Cleaning base
Developing
section
section
Developer
DV blade N kit
DV blade N kit
(P/G No.: [22]-22)
DV side seal F/R
(P/G No.: [23]-15,
[23]-26)
[23]-26)
Toner filter unit
(P/G No.: [22]-37)
Toner cartridge
User replacement for every toner empty (or the specified traveling distance).
Bias pin/Connector
Transfer
section
section
Intermediate transfer
belt
belt
(P/G No.: [26]-3)
Primary transfer coat
roller
roller
{
{
{
{
{
{
{
{
/
(P/G No.: [27]-9,
[28]-27)
[28]-27)
Primary transfer blade
(P/G No.: [25]-19)
Belt drive gear
/
(P/G No.: [27]-13)
Primary transfer
conduction collar
conduction collar
(P/G No.: [27]-8,
[28]-25)
[28]-25)
TC roller bearing
(P/G No.: [27]-39)
Transfer drive roller
{
{
{
{
{
{
{
{
{
{
{
{
Transfer follower
roller
roller
{
{
{
{
{
{
{
{
{
{
{
{
Tension roller
{
{
{
{
{
{
{
{
{
{
{
{
Roller CL brush
Y auxiliary roller
Y auxiliary roller
{
{
{
{
{
{
{
{
{
{
{
{
Resist backup roller
Cleaner seal
Cleaner seal R
Cleaner seal
Cleaner seal R
MX-1800N MAINTENANCE 9 – 2
Transfer
section
section
Transfer toner
reception seal
Secondary transfer
belt
reception seal
Secondary transfer
belt
/
(P/G No.: [30]-21)
Secondary transfer
roller
roller
/
(P/G No.: [30]-6)
Secondary belt drive
roller
roller
{
{
{
/{
Secondary belt
tension roller
tension roller
{
{
{
/{
Secondary belt
follower roller
follower roller
{
{
{
/{
Secondary transfer
idle gear
idle gear
/
(P/G No.: [29]-6)
Sensors (Process
control resist sensor)
control resist sensor)
{
{
{
{
{
{
{
{
{
{
{
{
Fusing section
Upper heat roller unit
/
(P/G No.: [32]-32)
Lower heat roller unit
/
(P/G No.: [33]-15)
Upper separation
pawl
pawl
/
(P/G No.: [32]-11)
Lower separation
pawl
pawl
/
(P/G No.: [33]-100)
Upper thermistor
(Non-contact type)
(Non-contact type)
/
(P/G No.: [32]-37)
Upper thermistor
(Contact type)
(Contact type)
/
(P/G No.: [32]-18)
Lower thermistor
/
(P/G No.: [33]-20)
Gears
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
Paper guides
{
{
{
{
{
{
{
{
{
{
{
{
{
Filters
Ozone filter PA
(P/G No.: [47]-40)
Paper exit filter
(P/G No.: [37]-100)
Paper feed
section
section
Pickup roller
{
{
{
{
{
{
{
{
{
{
{
{
Replacement
reference: Replace
every 100K counts
for each paper feed.
reference: Replace
every 100K counts
for each paper feed.
Paper feed roller
{
{
{
{
{
{
{
{
{
{
{
{
Separation roller
{
{
{
{
{
{
{
{
{
{
{
{
Torque limiter
Replacement
reference: Replace
every 100K counts
for each paper feed.
reference: Replace
every 100K counts
for each paper feed.
Transport
section/
Paper exit
reverse section
section/
Paper exit
reverse section
PS follower roller
{
{
{
{
{
{
{
{
{
{
{
{
Transport rollers
{
{
{
{
{
{
{
{
{
{
{
{
Transport paper
guides
guides
{
{
{
{
{
{
{
{
{
{
{
{
{
Discharge brush
Gears
Gears
When checking,
apply to the
necessary positions
(specified positions).
apply to the
necessary positions
(specified positions).
PS paper dust
removal unit
removal unit
(P/G No.: [26]-100)
Drive section
Gears (Grease)
When checking,
apply to the
necessary positions
(specified positions).
apply to the
necessary positions
(specified positions).
Shaft earth sections
(Conduction grease)
(Conduction grease)
When checking,
apply to the
necessary positions
(specified positions).
apply to the
necessary positions
(specified positions).
Belts
Sensors
Sensors
Optical section
Mirror/Lens/Reflector/
CCD
CCD
{
{
{
{
{
{
{
{
{
{
{
{
{
Table glass/SPF glass
{
{
{
{
{
{
{
{
{
{
{
{
{
Scanner lamp
{
{
{
{
{
{
{
{
{
{
{
{
{
Rails
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
✩
Drive belt/Drive wire
Unit name
Part name
When
calling
80
K
160
K
240
K
320
K
400
K
480
K
560
K
640
K
720
K
800
K
~
1200
K
Remark/Refer to
the Parts Guide.
Block/Item No.
(Only the
replacement parts
are described.)
MX-1800N MAINTENANCE 9 – 3
2. Details of maintenance
A. Drum peripheral
: Check (Clean, replace, or adjust according to necessity.) {: Clean : Replace
: Adjust ✩: Lubricate : Shift the position.
No.
Part name
Monochrome
supply/
Mechanical
parts
When
calling
80
K
160
K
240
K
320
K
400
K
480
K
560
K
640
K
720
K
800
K
~
1200
K
Remark/Refer to
the Parts Guide.
Block/Item No.
(Only the
replacement parts
are described.)
Color supply
40
K
80
K
120
K
160
K
200
K
240
K
280
K
320
K
360
K
400
K
~
1200
K
1
Drum (BK)
Monochrome
supply
supply
2
Cleaning blade (BK)
(P/G No.: [24]-14)
3
Main charger unit (BK)
(P/G No.: [24]-2)
4
Drum (C)
Color supply
5
Cleaning blade (C)
(P/G No.: [24]-14)
6
Main charger unit (C)
(P/G No.: [24]-2)
7
Side seal F/R (BK)
Mechanical
parts
parts
8
Toner reception seal
(BK)
(BK)
9
Side seal F/R (C)
10
Toner reception seal (C)
11
Waste toner box
Each color 5%
coverage,
color ratios 25%
coverage,
color ratios 25%
3,6
7,9
8,10
2,5
7,9
1,4
11
MX-1800N MAINTENANCE 9 – 4
The PM cycle means the replacement timing of periodic replace-
ment consumable parts which are required for maintaining the per-
formance.
The PM cycle is specified only for B/W output. For color output, it is
used as a reference value.
[Reason] Since the ratio of B/W to color differs depending on the
user's operation scene which varies every day, the PM cycle can-
not be specified in a certain cycle for color output.
Replacement of a PM item at the recommended life is performed
by the dealer's judgment or at PM call or at EM call.
Life end definition of a drum
When the drum counter exceeds the specified level of 100% black
output or 100% full color output, it is judged as life end.
However in practice, the number of rotations specifies quality
assurance policy of the tandem engine, where its wear cannot be
solely defined by the number of sheets but other operating condi-
tions including increased slip rotations depending on the ratio of B/
W to color and/or B/W printing in the color mode using the ACS.
The guaranteed number of rotations for the MX-1800 series drum
is 840K.
ment consumable parts which are required for maintaining the per-
formance.
The PM cycle is specified only for B/W output. For color output, it is
used as a reference value.
[Reason] Since the ratio of B/W to color differs depending on the
user's operation scene which varies every day, the PM cycle can-
not be specified in a certain cycle for color output.
Replacement of a PM item at the recommended life is performed
by the dealer's judgment or at PM call or at EM call.
Life end definition of a drum
When the drum counter exceeds the specified level of 100% black
output or 100% full color output, it is judged as life end.
However in practice, the number of rotations specifies quality
assurance policy of the tandem engine, where its wear cannot be
solely defined by the number of sheets but other operating condi-
tions including increased slip rotations depending on the ratio of B/
W to color and/or B/W printing in the color mode using the ACS.
The guaranteed number of rotations for the MX-1800 series drum
is 840K.
The drum life is affected by the number of sheets of one print job.
This is because the actual life is determined by rotations of the
drum. If the number of sheets of one print job is less than 2 sheets,
the number of rotations for page is increased. As shown in the fig-
ure below, therefore, the number of sheets of drum life varies
depending on the number of sheets of one print job.
As a reference of the drum life, "Life meter" can be checked with
SIM22-1 from the accumulated number of rotations of each drum.
"Life meter" indicates the remained life (%) of the drum with the
entire drum life as 100%.
(Example) If the used number of rotations is 588K:
This is because the actual life is determined by rotations of the
drum. If the number of sheets of one print job is less than 2 sheets,
the number of rotations for page is increased. As shown in the fig-
ure below, therefore, the number of sheets of drum life varies
depending on the number of sheets of one print job.
As a reference of the drum life, "Life meter" can be checked with
SIM22-1 from the accumulated number of rotations of each drum.
"Life meter" indicates the remained life (%) of the drum with the
entire drum life as 100%.
(Example) If the used number of rotations is 588K:
588 (K rotations) / 840 (K rotations) x 100 = 070 (%)
* For 100% full color output by the user, the life of the black drum
is 40K similarly to the life of the color drums.
Drum counter
Number of rotations of drum
B/W
Full color
B/W
Full color
Drum
80K
40K
840K rotations
840K rotations
Drum Life
0
50
100
150
200
0
1
2
Number of sheets of one print job
Drum
L
ife
(
-
K
p
ages)
Black Drum
Color Drum
