Sharp AR-5618 Service Manual page 49

：'11/Jul/22
1
Main Sub
Contents
code code
50 01 Image lead edge adjustment
06 Copy lead edge position
adjustment (SPF/RSPF)
1
(Only when the SPF/RSPF is
1
installed)
Used to adjust the copy image position and the lead edge void amount on the copy paper. This
adjustment is made by adjusting the image scan start position at 100% and the print start position
(resist roller ON timing).
(Operating procedure)
When this simulation is executed, the current set value is displayed in two digits. (Center value: 50)
When the [AUTO/TEXT/PHOTO] key is pressed, the setting mode and the display are switched.
Enter the adjustment value with the Numeric keys and press the [START] key, and the entered value
is set and a copy is made. (Adjustment range 1 ~ 99) When the [Interrupt] key is pressed, the entered
value is saved and the machine goes into the sub code entry standby mode. When the [CA] key is
pressed, the entered value is saved and the simulation is terminated. When the adjustment is made
with 1st tray paper feed, all the adjustment values at the paper feed ports become the same.
(When the adjustment value is increased by 1, the position is shifted by about 0.1mm.)
LED
AUTO, 1st tray indicator
AUTO, 2nd tray indicator
AUTO, Bypass tray indicator
TEXT indicator
PHOTO indicator
AUTO, TEXT, PHOTO indicator
* The mark, " ", indicates that it is supported only for the installed model, and it is skipped for
non-installed models.
Note:When printing is made with bypass tray, use A3 paper.
When the adjustment value of the print start position is increased by 1, the resist roller ON
timing is delayed and the print image is reduced by 0.1mm. When the adjustment value of the
image scan start position is increased by 1, the scan start position is shifted to the home
position by 0.1mm.
[Adjustment procedure]
(1) Set the print start position (A) (AUTO exposure ON), the lead edge void amount (B) (TEXT ON),
and the scan start position (C) (PHOTO ON) to <1>, and make a 100% copy.
(2) Measure the image loss (R mm) of the scale. Set as C=10 x R (mm). (Example: Set to 40.)
When the value of C is increased by 10, the image loss is decreased by 1mm. (Default: 50)
(3) Measure the distance between the paper lead edge and the image print start position.
Set as A=10 x H (mm). (Example: Set to 50.)
When the value of A is increased by 10, the image lead edge is shifted toward the paper lead
edge by 1mm. (Default: 50)
(4) Set the lead edge void area as B=50 (2.5mm). (Default: 50)
When the value of B is increased by 10, the void is increased by about 1mm.
(For 25 or less, however, the void amount is zero.)
(Example)
5mm
10mm
Used to make the SPF copy lead edge position adjustment.
* When the adjustment value of the document scan start position is increased by 1, the scan start
timing is advanced by 0.1mm. The print image is shifted to the reverse side of the scan start
position.
(Adjustment range: 1 ~ 99, Default: 50)
<Adjustment items>
LED
AUTO indicator Front document scan position adjustment
TEXT indicator Back document scan position adjustment
PHOTO indicator Rear edge void adjustment (SPF)
AR-5618S SIMULATIONS 7-19
Details of operation
Adjustment mode
Print start position (1st tray paper feed)
Print start position (2nd / 3rd / 4th tray paper feed)
Print start position (Bypass tray)
Image lead edge void amount
Image scan start position
Image rear edge void amount
Distance from the paper lead edge
to the image lead edge H = 5mm
Image loss
R=4mm
Item Default
50
50
50
Variable range
1 ~ 99
1 ~ 99
1 ~ 99