Sharp AR-5520 Service Manual page 21

9) Measure the distance H between the paper lead edge and the image
print start position. Set the image print start position set value
(AUTO, 1st tray indicator ON) again.
•1 step of the set value corresponds to about 0.1mm shift.
•Calculate the set value from the formula below.
H/0.1(mm) = Image print start position set value
<H: Print start position measurement value (mm)>
*Fit the print edge with the paper edge, and perform the
lead edge adjustment.
Example: 5/0.1 = 50 = about 50
Note:If the set value is not obtained from the above formula, perform the
fine adjustment.
10) Set the lead edge void adjustment value (TEXT indicator ON)* again.
•1 step of the set value corresponds to about 0.1mm shift.
•Calculate the set value from the formula below.
B/0.05 (mm) = Lead edge void adjustment value
<B: Lead edge void (mm)>
Example: When setting the lead edge void to 2.5mm
:2.5 /0.05 = about 50
Note:If the set value is not obtained from the above formula, perform the
fine adjustment.
* 2nd tray lead edge void adjustment: Exposure display <<AUTO +
TEXT + PHOTO>>
Bypass tray lead edge void adjustment: (TEXT indicator and PHOTO
indicator ON)
<Duplex mode adjustment>
OC 2nd print surface (Auto duplex) lead edge position adjustment:
SIM50-19 <<PHOTO>>
For the adjustment procedure, set to S → D mode before execution.
*
Note:Before performing the 2nd print surface lead edge position
adjustment and the lead edge void adjustment, be sure to perform
the 1st print surface lead edge position adjustment in advance, and
be sure to perform the 2nd print surface lead edge position
adjustment and then the lead edge void adjustment in this
sequence.
0mm
0mm
5
10
2.5mm
5
2.5mm
10
AR-5520 ADJUSTMENT 6-3
<Adjustment specification>
Adjustment SIM LED
mode
OC image lead SIM PHOTO
edge position 50-1
1st tray print AUTO
start position +
1st tray
2nd tray print AUTO
start position +
2nd tray
Bypass tray AUTO
print start +
position Bypass
tray
Lead edge void TEXT
OC 2nd print SIM PHOTO
surface lead 50-19*
edge position
adjustment
(Set to S → D mode for before execution)
*
b.SPF image lead edge position adjustment (SIM50-6)
1) Set a scale on the OC table as shown below.
Note: Since the printed copy is used as a test chart, put the scale in
paralled with the edge lines.
2) Make a copy, Then use the copy output as an original to make an
SPF copy again.
3) Check the copy output. If necessary, perform the following
adjustment procedures.
4) Execute SIM 50-6.
5) Set the SPF lead edge position set value (AUTO indicator ON) so
that the same image is obtained as that obtained in the previous OC
image lead edge position adjustment.
<Adjustment specification>
Adjustment mode SIM LED
SPF image lead SIM AUTO 1 step:
edge position 50-6
(1st print surface)
(2nd print surface) TEXT
Set Spec Set
value value range
R/0.1 Lead edge 1 ~ 99
void:
B/0.1
1 - 4mm
Image loss:
3mm or
less
B/0.05
1 step:
0.1mm shift
Set value Spec value Set
range
Lead edge 1 ~ 99
0.1mm shift void:
1 - 4mm
Image loss:
3mm or
less