MX-2300N, MX-2700N, MX-2300G, MX-2700G, MX-2300FG, MX-2700FG (serv.man11). Service Manual MX-RPX1 - Sharp Copying Equipment Service Manual (repair manual). Page 22

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MX-RPX1  ADJUSTMENTS  8 – 1
Service Manual      
 
[8] ADJUSTMENTS
1. RSPF magnification ratio adjustment
NOTE: To execute this adjustment, the CCD unit must have been
properly installed. To execute this adjustment, the OC
mode adjustment when copying must have been com-
pleted.
1)
Place a scale on the document table as shown in the figure
below, and make a normal copy to make a test chart.
2)
Set the test chart on the RSPF, and make a normal copy.
3)
Compare the outputted copy with the test chart. If it is judged
from comparison that an adjustment is required, perform the
following procedures.
4)
Execute SIM48-1.
5)
Change the mode to "C: SPF (MAIN)." The current magnifica-
tion ratio correction value is displayed in 2 digits on the display
section.
6)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
7)
Change the mode to "E: SPFB (MAIN)." The current magnifi-
cation ratio correction value is displayed in 2 digits on the dis-
play section.
8)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
9)
Change the mode to "D: SPF (SUB)." The current magnifica-
tion ratio correction value is displayed in 2 digits on the display
section.
10) Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
11) Change the mode to "F: SPFB (SUB)." The current magnifica-
tion ratio in the back surface sub scanning direction is dis-
played in 2 digits on the display section.
12) Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
<Adjustment specifications>
2. RSPF document off-center 
adjustment
NOTE: To execute this adjustment, the paper off-center must have
been adjusted properly.
1)
Set the test chart for center position adjustment (which is
made by yourself) on the RSPF.
<Adjustment specifications>
Draw a straight line on paper in the scanning direction.
2)
Make a normal copy from the manual paper feed tray. Com-
pare the printed copy and the test chart. If an adjustment is
required, perform the following procedures.
3)
Execute SIM50-12.
4)
Change the mode to "B: SPF (SIDE1)." The current off-center
adjustment value is displayed in 2 digits on the display section.
5)
Enter a set value and press [START] key. The correction value
is saved and a copy is made.
6)
Change the mode to "C: SPF (SIDE2)." The current back sur-
face off-center adjustment value is displayed in 2 digits on the
display section.
7)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
<Adjustment specifications>
Note: Since the copied scale is used as a test chart,
place the scale in parallel to the sides.
㩷 㩷
CLOSE
0
A:
A
㧦 80
B
㧦 50
C
㧦 50
D
㧦 50
㧧 CCD(MAIN)
㧧 CCD(SUB)
㧧
SPF(MAIN)
㧧
SPF(SUB)
SIMULATION
 NO.48-01
MAGNIFICATION
 ADJUSTMENT
80
㨇
1
㨪99 㨉
OK
TEST
Mode
Specifications
SIM
Set value
Set 
range
Magnification 
ratio 
adjustment
Normal 
±1.0%
SIM48-1
<Main scanning 
direction>
C: Front surface
E: Back surface
<Sub scanning 
direction>
D: Front surface
F: Back surface
Add 1: 0.1% 
enlarged.
Subtract 1: 
0.1% 
reduced.
Default: 50
1 – 99
Mode
Specifications
SIM
Set value
Set 
range
Document 
off-center 
adjustment
Center position 
(Default): 3750 
pixel
SIM50-12
B: Front 
surface
C: Back 
surface
Add 1: Shift to R 
side by 0.1mm.
Subtract 1: Shift to 
F side by 0.1mm.
1 – 99
0
A:
A
㧦 99
B
㧦 50
㧧 OC
㧧 SPF(SIDE1)
SIMULATION
 NO.50-12
ORGINAL CENTER OFFSET SETUP
99
㨇 1㨪 99 㨉
OK
TEST
CLOSE
C
㧦 50
㧧 SPF(SIDE2)

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