Image Position Adjustment; Mm Japan 1/2Mm - Sharp AL-2020 Service Manual

c. Adjustment procedure
1) Set the scale on the document table as shown below. (Use a
long scale for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 81/2" x 11" paper.
4) Measure the length of the copied scale image.
5) Calculate the sub scanning direction copy magnification ratio
using the formula below.
Copy image dimensions
=
Original dimension
mm
10 20 100 110 120
1/2mm
mm
10 20 100 110 120
1/2mm
Reference Comparison point
6) Check that the actual copy magnification ratio is within the
specified range. (100 ± 1.0%).
If it is not within the specified range, perform the following pro-
cedures.
7) Execute SIM 48-1 to select the sub scanning direction copy
magnification ratio adjustment mode.
To select the adjustment mode, use the [Exposure mode selec-
tor] key (or [ ] [ ] key for the AL-2050/2060). (PHOTO lamp
ON (or SCAN mode lamp ON for the AL-2050/2060))
8) Enter the new set value of sub scanning direction copy magnifi-
cation ratio with the [Copy quantity] keys (or [Numeric] keys for
the AL-2050/2060), and press the [START] key.
Repeat procedures 1) - 8) until the sub scanning direction actual
copy magnification ratio in 100% copying is within the specified
range.
When the set value is changed by 1, the magnification ration is
changed by 0.1%.
X 100 (%)
110
Original (Scale)
HARDDENCD
STAINLESS
JAPAN
150
130 140
Shizuoka
Paper feed
HARDDENCD
direction
STAINLESS
JAPAN
150
130 140
Shizuoka
Copy
AL-2020/2035/2040/2050/2060 ADJUSTMENTS 9 - 2
B. Image position adjustment
There are following eleven kinds of image position adjustments,
which are made by laser control except for the image scan start
position adjustment. For the adjustments, SIM 50-01 and 50-10 are
used.
No. Mode
1 Print start position
(Main cassette paper feed)
2 Print start position (Manual paper feed)
3 Image lead edge void amount
4 Image scan start position
5 Image rear edge void amount
(Cassette paper feed)
6 Image rear edge void amount
(Manual paper feed)
7 Print center offset
(Main cassette paper feed)
8 Print center offset (Manual paper feed)
(AL-2020/2035/2040)
To select the adjustment mode with SIM 50-01, use the [Exposure
mode selector] key.
The relationship between the adjustment modes and the lighting
lamps are as shown in the table below.
Adjustment mode
Print start position
(Main cassette paper feed)
Print start position
(Manual paper feed)
Image lead edge void quantity
Image scan start position
Image rear edge void quantity
To select the adjustment mode with SIM 50-10, use the [Exposure
mode selector] key.
The relationship between the adjustment modes and the lighting
lamps are as shown in the table below.
Machine with the multi manual paper feed unit
Adjustment mode
Print center offset
(Main cassette paper feed)
Print center offset
(Manual paper feed)
Second side center offset
: Supported for the installing model and skipped for non-install-
ing mode.
SIM
50-01
50-01
50-01
50-01
50-01
50-01 AL-2050
AL-2060
50-10
50-10
Lamp ON
AE, main cassette lamp
AE, manual feed lamp
TEXT lamp
PHOTO lamp
AE, TEXT, PHOTO lamp
Lamp ON
AE, main cassette lamp
AE, manual paper feed
lamp
TEXT lamp