Konica Minolta magicolor 7450, Service Manual

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Field Service Ver. 1.0 May 2006 3. Periodical check
11
magicolor 7450
Maintenance
3.3 Concept of parts life
*1: A waste toner full condition is detected with detecting the actual waste toner emissions.
*2: Once the Toner-Full is detected, it has to be replaced with the new Waste Toner Bottle in
order to reset.
*3: The count condition is different according to the media length of the sub scanning direc-
tion.
Description Near Life value
Life value /
Max. number of
printed pages
Waste Toner
Bottle
A waste toner full condition is detected when about
2,500 printed pages have been produced after a
waste toner near full condition has been detected.
When the maximum number of printed pages is
reached, the print is inhibited.
⎯
18 K *1, 2
Description
Life value
(Specification
value)
Max. number of
printed pages
Fusing unit
The number of prints made is counted. *3
The number of prints made is compared with the
value of the number of hours through which the
Fusing Drive Motor has turned translated to a cor-
responding value of the number of prints made and
the value, whichever reaches the life specification
value, is detected.
When the maximum number of printed pages is
reached, the print is inhibited.
120 K 150 K
Transfer Belt
It is detected by counting the number of hours the
Transfer Belt turns. The printing is prohibited when
it reaches to the maximum printed pages.
120 K 150 K
Imaging Unit
C/M/Y
The hours which the PC drum has turned is com-
pared with the value of the number of hours through
which the Imaging roller has turned translated to a
corresponding value of hours and the value, which-
ever reaches the life specification value, is
detected.
* The hours which the PC drum has turned is the
value of the number of distance through which the
PC drum has run translated to a corresponding
value of the number of hours and the value.
30 K 32 K
Imaging Unit
/K
50 K 52 K
Length of
the sub scanning direction
Number of counts
216 mm or less 1 count
216 mm to 432 mm 2 counts
432 mm to 648 mm 3 counts
648 mm to 864 mm 4 counts
over 864 mm 5 counts