Sharp AL-1215 Service Manual page 72

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
20
10 100 110 120
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
procedures.
7) Execute SIM 48-1 to select the sub scanning direction copy
magnification ratio adjustment mode.
To select the adjustment mode, use the copy mode select key.
(Photo exposure lamp ON)
8) Enter the new set value of sub scanning direction copy
magnification ratio with the copy quantity set key, and press the
COPY button.
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
130 150
140
Shizuoka
Copy
AL-1551CS ADJUSTMENTS 9 - 2
B. Image position adjustment
There are following five 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, 50 - 10, 50 - 18 and SIM
50 - 19 are used.
No. Adjustment item
1 Print start position
2 Image lead edge void amount
3 Image scan start position
4 Image rear edge void amount
5 SPF image scan start position
6 Center offset
7 Memory reverse position adjustment in
duplex copy
8 Duplex copy rear edge void adjustment
9 Duplex back print start position
To select the adjustment mode with SIM 50 - 01, use the copy mode
select 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 (2nd cassette paper
feed)
Print start position (Manual paper feed) AE, manual feed lamp
Image lead edge void quantity
Image scan start position
Image rear edge void quantity
SPF image scan start position
: Supported for the installing model and skipped for non-installing
mode.
To select the adjustment mode with SIM 50 - 10, use the copy mode
select 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) AE, manual paper feed lamp
OC/document center offset
Machine with the single manual paper feed unit
Adjustment mode
Print center offset (Main cassette paper
feed)
Print center offset (Manual paper feed) AE, manual paper feed lamp
OC/document center offset
Duplex copy rear edge void adjustment mode
Adjustment mode
Image cut rear edge void quantity
(RSPF)
Paper rear edge void quantity
Print start position (Duplex back)
RSPF (Back) original center offset
Simulation
50 - 01
50 - 01
50 - 01
50 - 01
50 - 01
50 - 10
50 - 18
50 - 19
50 - 19
Lamp ON
AE, main cassette lamp
AE, 2nd cassette lamp
TEXT lamp
PHOTO lamp
AE, TEXT, PHOTO
lamp
AE, TEXT lamp
Lamp ON
AE, main cassette lamp
AE, TEXT lamp
Lamp ON
AE, main cassette lamp
AE, TEXT lamp
Lamp ON
AE lamp
TEXT lamp
PHOTO lamp
AE, TEXT, PHOTO lamps