Konica Minolta 7020 Service Manual page 207

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b. ADU centering adjustment
2
Step
1 Enter the 36 mode.
2 [36 mode menu screen]
Press the [2. Timing adj.] key.
3 [Timing adjustment menu screen]
Press the [5. Centring adj.] key.
4 [Centering adjustment screen]
Press the [NEXT] key until "ADU" appears in the
message display area.
5 Press the [COPY] key.
6 [Basic screen]
Select copy mode to single side - double side mode, then
press the Start print button to print the SGU pattern.
7 Fold the output (SGU pattern) at the center in
the paper feed direction, and check that the left
and right lines overlap completely.
Standard value: First side: Within ±3 mm
8 Press the # button while pressing the
to return to the centering adjustment screen.
9 [Centering adjustment screen]
If the miscentering is more than standard value,
enter a value from the numeric keys, then press
the [SET] key to store the adjustment value.
Input range: -53 (inward direction of the center line)
10 Repeat steps 5 to 9 until the miscentering is
within standard value for each paper size.
(Note 1)
11 To adjust another adjustment item, press the
[NEXT] or [BACK] key to select the desired
adjustment.
12 Press the [RETURN] key to return to the timing
adjustment menu screen.
Standard value: Within 3.0 mm (life size)
Lengthwise
direction
Note 1:
Operation procedure
Second side: Within ±3 mm
~ +53 (rear direction of the center line)
1 step = 0.09mm
M i s c e n t e r i n g
amount between
first side and
second side
If it can not be adjusted within the specified
range, refer to "Other Adjustments".
c. Platen centering adjustment
Step
1 Enter the 36 mode.
2 [36 mode menu screen]
Press the [2. Timing adj.] key.
3 [Timing adjustment menu screen]
Press the [5. Centring adj.] key.
4 [Centering adjustment screen]
Press the [NEXT] key until "Platen" appears in
the message display area.
5 Press the [COPY] key.
6 [Basic screen]
Set the new pyramid chart on the original glass
and select A3 or 11 x 17 size paper, then press
the Start print button to make a test copy.
7 Check the miscentering by comparing the
original with the copy.
Standard value: Within ±2 mm
8 Press the # button while pressing the
button
to return to the centering adjustment screen.
*
9 [Centering adjustment screen]
If the miscentering is more than standard value,
enter a value from the numeric keys, then press
the [SET] key to store the adjustment value.
Input range: -74 (inward direction of the center line)
10 Repeat steps 5 to 9 until the miscentering is
within standard value.
11 To adjust another adjustment item, press the
[NEXT] or [BACK] key to select the desired
adjustment.
12 Press the [RETURN] key to return to the timing
adjustment menu screen.
4-49
ADJUSTMENT
36
Operation procedure
*
~ +74 (rear direction of the center line)
1 step = 0.04mm
button