Sharp AR-RP7, Service Manual

Page: 8 / 22

AR-RP7 ADJUSTMENTS
– 7 –
[6] ADJUSTMENTS
(1) RSPF auto white correction pixel
adjustment
[Function]
The white correction start pixel position is automatically adjusted.
This adjustment is performed after the lens unit is replaced.
[Operation]
(2) RSPF magnification ratio adjustment
Note: • When performing this adjustment, check that the CCD unit is
properly installed.
• When performing this adjustment, check that the OC mode
adjustment in copying is completed.
1) Place a scale on the document table as shown below, and make a
normal copy to make a test chart.
2) Set the test chart to the RSPF and make a normal copy.
3) Compare the copy and the test chart.
If an adjustment is needed, perform the following procedures.
4) Execute SIM 48-5.
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.
7) Change the TEXT mode.
The TEXT lamp lights up, and the current correction value of the
back surface sub scanning direction magnification ratio is displayed
on the display section in two digits.
8) Enter the set value, and press the START key.
The entered correction value is stored and a copy is made.
<Adjustment specifications>
(3) RSPF document off center adjustment
Note: When performing this adjustment, check that the paper off-cen-
ter 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.
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.
<Adjustment specifications>
SHADING POSITION ADJUSTMENT. COMPLETE.
[160]
SIMULATION 63-7
SIMULATION 63-7
SHADING POSITION ADJUSTMENT. PRESS START.
SHADING POSITION ADJUSTMENT. EXECUTING...
SHADING POSITION ADJUSTMENT. ERROR.
[ 0]
SIMULATION 63-7
SIMULATION 63-7
Open the SPF unit and press the [START]
key. [ ] indicates the order number of
the pixel of the white sheet for SPF
exposure correction in the SPF position.
When the adjustment is completed
normally, "COMPLETE" is displayed,
and data are written into the EEPROM.
Press the [START] key.
(Initial screen)
(During execution)
The SPF white correction start pixel
= Displayed pixel position - 34
If the simulation is executed with the
SPF unit closed, an error is resulted.
(Initial screen with the execution result displayed)
Normal end Abnormal end
Note: Since the copy is used as the test chart, place the scale
in parallel to the front edge of the copy glass.
Mode Spec SIM Set value
Set
range
Magnification
ratio adjustment Normal:
m
1.0%
SIM 48-5
3: Surface
4: Back
Add 1:
0.1% increase
Reduce 1:
0.1% decrease
1 ~ 99
Mode Specification SIM Set value
Set
range
Document
off-center Simplex:
Center
m
3.0mm
Duplex:
Center
m
3.5mm
SIM 50-12
2: SPF surface
4: SPF back Add 1:
0.1mm shifted to
R side.
Reduce 1:
0.1mm shifted to
L side.
1 ~ 99