Sharp AL-2030, Service Manual, Page: 61 / 108

AL-2040CS ADJUSTMENTS 9 - 7
4) Execute SIM 50-19 to turn on the TEXT lamp and make the
printing mode in OC-D mode.
Make a copy of the test chart to check the void area of the
scale on the image.
Adjust the setting so that the void area is 4 - 5 mm. An increase in
1 of setting represents 0.1 mm in void area.
(2) Print start position (Duplex back surface)
1) Set the test chart so that the scale is positioned as shown
below.
2) Execute SIM 50-19 to turn on the PHOTO lamp (on the opera-
tion panel) and make the printing mode in the S-D mode.
3) Remove and reinsert the cassette.
Note: Make sure to carry out this step before making a copy dur-
ing this adjustment.
4) Make a copy and check the void area of the scale on the
image.
Adjust the setting so that the void area is 2 - 4 mm. An
increase of 1 in setting represents an increase of 0.1 mm in
void area.
Void position to be checked
5. SPF scan position automatic
adjustment
Fold two sheets of A4 paper (white chart) into two, and place them
so that they cover the SPF scan glass and the OC glass together,
and close the OC cover.
When SIM 53-08 is executed, the current adjustment value is dis-
played as the initial display.
∗
Default is 50. Adjustment range is 1 – 99. Adjustment unit 1 =
about 0.127mm
In the case of AUTO, when START key is pressed, the mirror unit
scans from the home position to the SPF scan position with the
current adjustment value displayed. Then the SPF glass cover
edge position is determined from the difference in the CCD output
levels of the SPF glass cover edge and the OC side document
glass.
If the adjustment is completed normally, the adjusted value is
displayed on the 7seg/LCD. If it is terminated abnormally, the
following lamp is turned ON.
"JAM lamp": When the operation is canceled by pressing C key
during execution, the mirror is returned and "- -" is displayed.
The density select key is used to select the mode.
Operation
The operation is similar to SIM 46-01. (In MANUAL)
6. SPF mode sub scanning direction
magnification ratio adjustment
Note : Before performing this adjustment, be sure to check that the
OC mode adjustment in copying has been completed.
1) Put a scale on the original table as shown below, and make a
normal copy (100%) on the front and the back surfaces to
make a test chart.
Note : Since the printed copy is used as a test chart, put the scale
in paralled with the edge lines.
2) Set the test chart on the SPF and make a copy in the normal
ratio (100%).
3) Compare the scale image and the actual image.
If necessary, perform the following adjustment procedures.
4) Execute SIM 48-05.
5) The current sub scanning direction magnification ratio correc-
tion value is displayed in two digits on the display section.
6) Enter the set value and press the START key.
∗
When there is no document in SPF, copy is inhibited.
The trailing edge void on the first printing surface
is shown above.
Paper
Void position to be check
Scale (S-D mode)
Mode Default LED
SPF scan position auto
adjustment 50 AE mode lamp
SPF scan position manual
adjustment 50 TEXT mode lamp
Mode Display item Default LED
Sub scan magnification
ratio adjustment on the
surface of SPF document SIDE1 50 AE mode
lamp
6cm or more is required.