Read Sharp AL-800 (serv.man7) Service Manual online
Operation/
Procedure
Procedure
There are following three copy magnification ratio adjustment modes.
Adjustment mode
Adjustment mode display (ON)
Note
Main scanning direction
Auto
Auto copy mode lamp
Automatically adjusted by the software.
Manual
Manual copy mode lamp
Automatically adjusted by the software.
Sub scanning direction
Manual
Photo copy mode lamp
Adjustment is made by changing the
scanning speed,
scanning speed,
1) Select the adjustment mode with the copy picture quality mode select key.
(The currently set copy density adjustment level is displayed on the copy quantity display.)
2) To change the copy magnification ratio, change the adjustment value and press the start button.
(The adjustment value is stored and a copy is made at the copy magnification ratio corresponding to the value.)
The adjustment value can be set in the range of 0 ~ 99.
The adjustment value can be set in the range of 0 ~ 99.
In the case of the main scanning direction copy magnification ratio adjustment (auto) mode, the adjustment is
made automatically and there is no need to adjust. Without entering the adjustment value, press the start
button.
There are two marks on the shading correction plate, and the distance between the two marks is read by the
CCD to adjust the main scanning direction copy magnification ratio automatically. In case of the mark reading
error, "- - -" is displayed on the copy quantity display.
At that time, the main scanning direction image position adjustment is also made automatically.
If, however, automatic adjustment is not made, manual adjustment must be made.
made automatically and there is no need to adjust. Without entering the adjustment value, press the start
button.
There are two marks on the shading correction plate, and the distance between the two marks is read by the
CCD to adjust the main scanning direction copy magnification ratio automatically. In case of the mark reading
error, "- - -" is displayed on the copy quantity display.
At that time, the main scanning direction image position adjustment is also made automatically.
If, however, automatic adjustment is not made, manual adjustment must be made.
When the adjustment value is changed by "1," the copy magnification ratio is changed by 0.1%.
Note
50
50 - 1
Purpose
Adjustment
Function
(Purpose)
(Purpose)
Used to adjust the copy image position o the print paper in the copy mode and to adjust the void area (image
loss).
loss).
Section
Item
Picture quality
Operation/
Procedure
Procedure
There are following four adjustment items.
By changing the adjustment values of the items, the paper lead edge, the rear edge, image loss, and void area
can be adjusted.
By changing the adjustment values of the items, the paper lead edge, the rear edge, image loss, and void area
can be adjusted.
Adjustment item
Adjustment mode
display (ON)
Note
Image lead edge
position (print start
position)
position (print start
position)
Auto copy mode lamp
Used to determine the relative positions of the paper and the
image. The paper lead edge and the image lead edge reference
position (image lead edge) are aligned. (It corresponds to the time
from when the PIN detector detects the paper lead edge to when
the scanner starts (printing is started).
image. The paper lead edge and the image lead edge reference
position (image lead edge) are aligned. (It corresponds to the time
from when the PIN detector detects the paper lead edge to when
the scanner starts (printing is started).
Image lead edge
reference position
(image scan start
position)
reference position
(image scan start
position)
Photo copy mode lamp
Used to determined the image lead edge reference position.
(Used to determine the distance between the scanner home
position to the document lead edge reference position.)
(Used to determine the distance between the scanner home
position to the document lead edge reference position.)
Lead edge void area
Manual copy mode
lamp
lamp
Used to adjust the lead edge section effective image amount. The
images scanned from starting the scanner to reaching the image
lead edge reference position and during the time corresponding to
this setting are made invalid (cut off) to make the image loss and
the void area.
images scanned from starting the scanner to reaching the image
lead edge reference position and during the time corresponding to
this setting are made invalid (cut off) to make the image loss and
the void area.
Rear edge void area
Auto/Photo/Manual
copy mode lamp
copy mode lamp
Used to determine the cut timing of the print image (data). The
PIN detector detects the paper length. The print image (data) cut
timing is determined from the relationship between the calculated
paper length and the sub scanning direction image length,
PIN detector detects the paper length. The print image (data) cut
timing is determined from the relationship between the calculated
paper length and the sub scanning direction image length,
1) Select the adjustment mode image lead edge position (print start position) with the copy picture quality mode
select key.
(The currently set adjustment value is displayed on the copy quantity display.)
(The currently set adjustment value is displayed on the copy quantity display.)
2) Change the set value and press the start button.
(The adjustment value is stored and a copy is made.)
When the set value is made greater, the image lead edge position is shifted forward for the paper lead edge
position.
When the set value is made smaller, the image lead edge position is shifted backward for the paper lead
edge position.
When the set value is made greater, the image lead edge position is shifted forward for the paper lead edge
position.
When the set value is made smaller, the image lead edge position is shifted backward for the paper lead
edge position.
3) Select the adjustment mode image lead edge position (image scanning start position) with the copy picture
quality mode select key.
(The currently set adjustment value is displayed on the copy quantity display.)
8 – 19
Click on the first or last page to see other AL-800 (serv.man7) service manuals if exist.