Minolta CF2002 Service Manual page 155

Item
To adjust part-to-part varia-
tions in accuracy of IR parts
and their mounting accuracy
by varying the scan start
position in the CD direction.
Left
When the CCD Unit is


Image
replaced.
When the Original Glass is


replaced.
To adjust variations in mount-
ing accuracy and sensitivity
of the Scanner Home Sensor
and in mounting accuracy of
the Original Width Scale by
varying the scan start posi-
tion in the CD direction.
Top
IR
Image
When the Original Glass or
Area


Original Width Scale is
replaced.
To correct an error in the
zoom ratio in the CD direc-
tion occurring due to varia-
tions in mounting accuracy of
the CCD, lens, and other
parts by varying the number
CD-
of readings in the CD direc-
Mag
tion.
When the CCD Unit is


replaced.
The adjustment of "Zoom


for FD" of "PRT Area" must
be completed.
Purpose
• With a scale placed in parallel with the
• Because of a void amount involved with
• Adjust so that the scan starts with the
• With a scale placed in parallel with the
• Since a void image occurs on the copy
• Adjust so that the scan starts with the
• Place a scale on the Original Glass in
• If the measured value falls outside the
S-22
Setting/Precautions
Original Width Scale and with the lead-
ing edge of the scale pressed up
against the Original Length Scale, make
a copy of the scale.
the engine side, the image is automati-
cally slid 50 mm toward the left as it is
produced on the copy.
position of 0 mm (on the graduations) at
the leading edge of the scale as
checked with the image on the copy.
Original Length Scale and with the lead-
ing edge of the scale pressed up
against the Original Width Scale, make
a copy of the scale.
corresponding to the 0 mm portion of
the scale due to the shadow of the Orig-
inal Width Scale and Original Glass, a
void of 10 mm is forcibly produced of
the data.
position of 10 mm (on the graduations)
of the scale as checked with the image
on the copy.
the CD direction and make a copy of the
scale. Measure the length of the scale
on the copy to see if it measures 200
±
mm 1.
specified range, enter the correction
value by the following formula: specified
value/measured value.