MX-RP19. Service Manual for RP19N. - Sharp Copying Equipment Service Manual (repair manual). Page 8

MX-RP19 N  ADJUSTMENTS  4 – 3

5) Enter the SIM 48-1 mode.

* Items  A,  C,  E:  When  the  set  value  is  increased  by  1,  the

magnification ratio is increased by 0.02%.

* Items B, D: When the set value is increased by 1, the magni-

fication ratio is increased by 0.1%.

* It affects scanning (PC scanning, etc.) as well as copying.

6) Select  an  adjustment  item  of  SPF  (MAIN)/SPFB  (MAIN)  with

the scroll key.

7) Enter an adjustment value with 10-key, and press [OK] key.

When the adjustment value is increased, the image magnifica-
tion ratio is increased. When the adjustment value is changed
by 1, the image magnification ratio is changed by 0.02%.

Repeat  the  procedures  of  1)  -  7)  until  a  satisfactory  result  is
obtained.

NOTE: When [CLOSE] key is pressed in this simulation mode, the

machine goes into the normal operation mode. Under this
state,  copy  check  can  be  normally  performed.  When  the
system key is pressed, the machine returns to the simula-
tion mode.

This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When U2 trouble occurs.
* When the copy magnification ratio is not matched.
* When the RSPF is disassembled.
1)

Place the duplex adjustment chart shown below on the docu-
ment  tray  of  the  RSPF.  The  adjustment  chart  is  prepared  by
the  following  procedures.  Use  A4  (11"  x  8.5")  paper,  and  put
marks on both sides and both surfaces of the paper at 10mm
from each edge.

2)

Make a duplex copy at the normal ratio on A4 paper.

3)

Measure  the  images  on  the  copy  paper  and  the  original
images.

4)

Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If  the  image  magnification  ratio  is  within  the  specified  range
(100 +/- 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.

A

CCD(MAIN)

SCAN main scanning 
magnification ratio 
adjustment (CCD)

1 - 99

50

B

CCD(SUB)

SCAN sub scanning 
magnification ratio 
adjustment (CCD)

1 - 99

50

C

SPF(MAIN)

DSPF document front 
surface magnification ratio 
adjustment (Main scan)

1 - 99

50

D

SPF(SUB)

DSPF document front 
surface magnification ratio 
adjustment (Sub scan)

1 - 99

50

E

SPFB(MAIN)

DSPF document back 
surface magnification ratio 
adjustment (Main scan)

1 - 99

50

SPF (MAIN)

Main scanning direction image magnification ratio 
(Front surface)

SPFB (MAIN) Main scanning direction image magnification ratio 

(Back surface)

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2.

A4 size

10mm

10mm

Paper pass direction

original

copy

10

50

100

150

200

10

50

100

150

200