Read Sharp MX-M850 (serv.man39) Service Manual online
MX-M1100 MAINTENANCE 9 – 2
2. Life end definition
A. Definition of the drum life end
When the drum counter exceeds the specified level with 100% B/W
output, it is judged as life end.
In an actual use, wear is not solely determined by the copy quantity
but other operating conditions. Therefore, the number of rotations
of the drum is used as an indication of the product quality (wear
level).
The number of rotations for the MX-M850/M950/M1100 drum life
end is 1000K. 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 50
sheets, the number of rotations for page is increased. As shown in
the figure 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
Sim. 22-1 from the accumulated number of rotations of the drum.
"Life meter" indicates the reached life (%) with the entire life as
100%.
(Example) If the used number of rotations is 550K :
550 (K rotations) /1000 (K rotations)
output, it is judged as life end.
In an actual use, wear is not solely determined by the copy quantity
but other operating conditions. Therefore, the number of rotations
of the drum is used as an indication of the product quality (wear
level).
The number of rotations for the MX-M850/M950/M1100 drum life
end is 1000K. 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 50
sheets, the number of rotations for page is increased. As shown in
the figure 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
Sim. 22-1 from the accumulated number of rotations of the drum.
"Life meter" indicates the reached life (%) with the entire life as
100%.
(Example) If the used number of rotations is 550K :
550 (K rotations) /1000 (K rotations)
✕100 = 055 (%)
B. Definition of the developer life end
When the developer counter exceeds the specified level of 100%
B/W output, it is judged as life end.
In an actual use, the life is not solely determined by the copy quan-
tity but by other operating conditions. Therefore, the number of
rotations of the developer unit is used as an indication of the prod-
uct quality (wear level).
The number of rotations for the MX-M850/M950/M1100 developer
life end is 500K. The developer life is affected by the number of
sheets of one print job.
This is because the actual life is determined by rotations of the
developer unit. If the number of sheets of one print job is less than
50 sheets, the number of rotations for page is increased. As shown
in the figure below, therefore, the number of sheets of developer life
varies depending on the number of sheets of one print job.
As a reference of the developer life, "Life meter" can be checked
with Sim. 22-1 from the accumulated number of rotations of the
developer unit.
"Life meter" indicates the reached life (%) of developer with the
entire life as 100%.
B/W output, it is judged as life end.
In an actual use, the life is not solely determined by the copy quan-
tity but by other operating conditions. Therefore, the number of
rotations of the developer unit is used as an indication of the prod-
uct quality (wear level).
The number of rotations for the MX-M850/M950/M1100 developer
life end is 500K. The developer life is affected by the number of
sheets of one print job.
This is because the actual life is determined by rotations of the
developer unit. If the number of sheets of one print job is less than
50 sheets, the number of rotations for page is increased. As shown
in the figure below, therefore, the number of sheets of developer life
varies depending on the number of sheets of one print job.
As a reference of the developer life, "Life meter" can be checked
with Sim. 22-1 from the accumulated number of rotations of the
developer unit.
"Life meter" indicates the reached life (%) of developer with the
entire life as 100%.
3. Other related items
A. Maintenance timing display
The message of maintenance execution timing is displayed when
each counter reaches the set value. The relationship between the
messages and the counters is shown blow.
each counter reaches the set value. The relationship between the
messages and the counters is shown blow.
(1) (Maintenance timing) (Frameless)
a. Maintenance counters
• After completion of the maintenance, execute Sim. 24-4 (MEIN-
TENANCE ALL clear).
b. Fusing web
• After completion of the maintenance, execute Sim. 24-4 (FUSER
WEB SEND clear).
c. Drum cartridge system counters
• After completion of the maintenance, execute Sim. 24-7 (Drum
counters (number of the drum print counter, accumulated travel-
ing distance of the drum) clear).
ing distance of the drum) clear).
d. Developer cartridge system counters
• After completion of the maintenance, execute Sim. 24-5 (Devel-
oper counters (number of the developer print counter, accumu-
lated traveling distance of the developer) clear).
lated traveling distance of the developer) clear).
Drum counter
Number of
rotations of drum
Life
1000K sheets
1000K rotations
Developer counter
Number of rotations
of developer
Life
500K sheets
500K rotations
Black
20
900
1000
50
Drum
life
(K
sheets)
Multi print number of sheets (sheet)
Code
Content
Print job
Enable / Disable
TA
The maintenance counters (total) reaches 90%
of the set value of Sim. 21-1, or they reaches
the set value of Sim. 21-1 but Sim. 26-38 is set
to Print Enable.
of the set value of Sim. 21-1, or they reaches
the set value of Sim. 21-1 but Sim. 26-38 is set
to Print Enable.
Enable
Code
Content
Print job
Enable / Disable
FK3
When the near end detection sensor
(WEBSPD) and the end detection sensor
(WEBED) are OFF.
(WEBSPD) and the end detection sensor
(WEBED) are OFF.
Enable
Code
Content
Print job
Enable / Disable
DK
The drum cartridge print counter (K) reaches
1,000,000 sheets, or the accumulated number
of rotations of the drum (K) reaches 1000K.
1,000,000 sheets, or the accumulated number
of rotations of the drum (K) reaches 1000K.
Enable
Code
Content
Print job
Enable / Disable
VK
The developer print counter (K) reaches
500,000 sheets, or the accumulated number of
rotations of the developer (K) reaches 500K.
500,000 sheets, or the accumulated number of
rotations of the developer (K) reaches 500K.
Enable
Black
20
450
500
50
Multi print number of sheets (sheet)
Developer
life
(K
sheets)
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