MX-6201N, MX-7001N (serv.man18). ADJUSTMENTS SECTION - Sharp Copying Equipment Service Manual (repair manual). Page 19

MX-7001N  ADJUSTMENTS  6 – 19

(Measurement of the shift amount and the calculation of
the adjustment value)
a)

Measurement of the shift amount
* Measurement of the fine adjustment pattern

The visually highest color density section is regarded as
the center, and used as the measurement value.
(Example)
The measurement value of the figure is "7."

* Measurement of the rough adjustment pattern

Check that the color line is positioned in the plus direc-
tion or in the minus direction and judge the polarity from
that.
The center black line is scaled as 0, the first line mark
as 20, the second line mark as 40, the third line mark as
60. The interval between the rough adjustment marks
corresponds to 20.
(Example)
In the case of the figure, it is between 20 – 40 of the
plus polarity, and the measurement is "20."

* The actual shift amount is the sum of the rough adjust-

ment reference shift amount and the fine adjustment
shift amount.
Shift amount (correction value) = Rough adjustment
shift amount + Fine adjustment shift amount
When calculating, be careful of the plus polarity and the
minus polarity.
(Example)
In the case of the figure, the total shift amount is 27.
Measurement value: 27 (= 20 + 7)

The shift amount from the adjustment reference position
is calculated for each of six kinds of adjustment items A
– F.

b)

Adjustment value calculation
Add or subtract the shift amount calculated above to or
from the current adjustment value, and the result value is
used as the new adjustment value.
Adjustment value = Current adjustment value + Shift
amount (correction value)
(When the shift amount (correction value) is plus)
Adjustment value = Current adjustment value – Shift
amount (correction value)
(When the shift amount (correction value) is minus)

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