Sharp AR-M550N Service Manual page 235

: Feb. 9 2004
1
ADJ 6E Adjust the image magnification in the
sub-scanning direction in SPF mode
This adjustment is needed in the following situations:
• Images are not correctly magnified in the sub-scanning direction.
• The MFP control PWB has been replaced.
• The EEPROM on the MFP control PWB has been replaced.
• The scan control PWB has been replaced.
• The EEPROM on the scan control PWB has been replaced.
• U2 trouble has occurred.
1) On the SPF original tray, place such an original as illustrated
below.
10mm
10mm
2) Make a normal copy on A4 paper.
3) Measure the lengths of the copied image and the original image.
copy
4) Determine the image magnification factor using the following for-
mula:
Image magnification factor (%) = Copy dimension/original dimen-
sion x 100
Image magnification factor (%) = 99 / 100 x 100 = 99
If the image magnification factor is within the spec (100±0.8%), no
adjustment is required; otherwise, do the following steps.
5) Go through the modes specified in Simulation 48-1.
A4 size
original
AR-M550/M620/M700 SETTING AND ADJUSTMENTS 7 - 20
SIMULATION 48-1
1
MAGNIFICATION ADJUSTMENT. SELECT 0-7, AND PRESS START.
0.TRAY SELECT 1 1.PRINT START
2.MAGNIFICATION 100
3.CCD(MAIN) 50 4.CCD(SUB)
6.CIS(MAIN) 50 7.SPF(MAIN)
Select other than 0 - 2,
and press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. INPUT VALUE 0-99, AND PRESS
START.
4.CCD(SUB)
Press [START] key.
Select 1, and
press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. NOW COPYING.
Select 0, and press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. SELECT 1-16, AND PRESS START.
1
(FEED TRAY)
1.TRAY1 2.TRAY2 3.TRAY3 4.TRAY4
5.BPT 6.LCC
(ABOVE+10: DUPLEX MODE)
Select 2, and
press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT.
(MAGNIFICATION)
INPUT 25-400(%)
6) Select the number that corresponds to the adjustment item SPF
(SUB) using the numeric keypad.
This adjustment items is intended to adjust the image magnifica-
1
tion in the sub-scanning direction in SPF mode. (SPF (SUB))
7) Press the Start key
8) Adjust the image magnification factor by entering an appropriate
value through the numeric keypad.
9) Press the P or Start key
Pressing the Start key starts copy operation as well as applying the
adjustment value.
Repeat the above adjustments until an acceptable result is obtained.
Note: After adjusting the image magnification in the sub-scanning
direction through Simulation 48-1, do the following steps if mak-
ing a copy at a different magnification factor fails to produce a
correctly scaled copy.
50 5.SPF(SUB) 50
2
50
Press [CUSTOM SETTINGS] key.
50
Press [CUSTOM SETTINGS] key,
or terminate copying.
Press [START] key, or
press [CUSTOM SETTINGS] key.
1
Press [START] key, or
press [CUSTOM SETTINGS] key.
100