Read Sharp MX-6500N / MX-7500N (serv.man27) Service Manual online
MX-7500N OPERATIONAL DESCRIPTIONS 13 – 49
(5)
Fusing section cleaning
In this machine, the fusing roller (B) is cleaned by the web.
The cleaning unit is composed of the web feed roller, the winding
roller, and the backup roller which presses the web onto the fusing
roller (B) with the proper pressure.
roller, and the backup roller which presses the web onto the fusing
roller (B) with the proper pressure.
Residual toner on the fusing roller (B) is cleaned by the web which
contains silicon oil.
contains silicon oil.
(6)
Web life end detection
The web life near end is detected by the web print counter. When
the life reaches 300K prints, the following message is displayed to
notify that the replacement timing is approaching.
(Maintenance required.: FK3)
the life reaches 300K prints, the following message is displayed to
notify that the replacement timing is approaching.
(Maintenance required.: FK3)
The web life end is detected by the web end detector. When the life
end is detected, a job is forcibly interrupted even the job is being
performed.
end is detected, a job is forcibly interrupted even the job is being
performed.
After replacing the web with a new one, reset the web life counter
and the web send counter to clear the life end state.
and the web send counter to clear the life end state.
(7)
Fusing belt meandering alignment adjustment
The fusing belt meandering alignment adjustment is executed in
the production process.
the production process.
This adjustment can be made only in the production process, and
must not be performed by the serviceman.
must not be performed by the serviceman.
CAUTION: If a screw is tighten in a position which is not marked in
red, the belt may be broken.
Winding side
Feed side
Web sheet
Fusing roller (B)
Backup roller
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