Sharp AR-RP3 Service Manual page 8

Reverse single pass feeder (rspf)
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5) The current correction value is displayed on the display section in
two digits.
6) Enter the set value, and press the START key.
The entered correction value is stored and a copy is made.
<Adjustment specifications>
Mode
Magnification ratio adjustment
(3) RSPF document off center adjustment
Note : When performing this adjustment, check that the paper off-
center is properly adjusted.
1) Set the center position adjustment test chart (made by yourself) on
the RSPF.
<Adjustment specifications>
Draw a line in the center of paper. (In the scanning direction)
2) Make a normal copy from the manual feed tray, and compare the
copy and the test chart.
If an adjustment is required, perform the following procedures.
<Adjustment specifications>
Mode
Document off-center (RSPF
mode)
(4) RSPF image lead edge position adjustment
1) Set a scale on the OC table as shown below.
Note: Since the printed paper is used as the test chart,
place the scale in parallel to both sides.
<Adjustment specifications>
Adjustment mode
RSPF image lead edge
position
1: Surface document scan start position adjustment value
2: Back document scan start position adjustment value
3: Rear edge void adjustment value (SPF)
4: Surface image loss set value
5: Back image loss set value
6: Surface rear edge image loss set value
7: Back rear edge image loss set value
8: RRC cancel adjustment value (Back of the machine)
9: memory reverse position adjustment value
10: Duplex left edge void adjustment value
Spec
Normal:
1.0%
4: SPF surface magnification ratio adjustment
5: SPF back magnification ratio adjustment
Specification
Simplex: Center
3.0mm
Duplex:
Center
3.5mm
SIM
SIM 50-6
7) Change the duplex document mode to the simplex document
mode.
The MANUAL lamp lights up, and the current correction value of
the back surface sub scanning direction magnification ratio is dis-
played on the display section in two digits.
8) Enter the set value, and press the SATART key.
The entered correction value is stored and a copy is made.
SIM
SIM 48-1
Add 1:
Reduce 1: 0.1% decrease
3) Execute SIM 50-12.
4) The current off-center adjustment value is displayed on the display
section in two digits.
5) Enter the set value and press the START key.
The entered correction value is started and a copy is made.
SIM
SIM 50-12
Add 1:
2: SPF surface
Reduce 1: 0.1mm shifted to L side.
3: SPF back
2) Make a copy, and use the copied paper as the document and
make a copy from RSPF again.
3) Check the copied paper. If an adjustment is required, perform the
following procedures.
4) Execute SIM 50-6.
5) Set the SPF lead edge position set value (Exposure display
<MANUAL> ON) so that the image similar to the adjusted image at
the OC image lead edge position described previously is printed.
Set value
1step: 0.127mm shift Lead edge void: 1 ~ 4mm
Set value
Set range
0.1% increase
1 ~ 99
Set value
Set range
0.1mm shifted to R side.
1 ~ 99
Specification
Set range
1 ~ 99
Image loss: 3mm or less

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