Adjust The Original Scan Start Position; Adjust The Copied Image Loss/Void Area In Dspf Mode - Sharp MX-M550U Service Manual

8-B

Adjust the original scan start position

(adjust the scanner read position in DSPF-
mode front face scan)
This adjustment is needed in the following situations:
* 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.
* The scanner (reading) section has been disassembled.
* The scanner (reading) unit has been replaced.
* U2 trouble has occurred.
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
This adjustment is intended to adjust the scanner read position in
DSPF mode front face scan.
An incorrect adjustment would deviate the scanner stop position
from the required position, thus possibly causing a shadow of the
original table to appear at the leading edge of an image generated
by DSPF (front-face) mode scan.
1) Make a copy in DSPF (front-face) mode, and make sure that
the printed image at the leading edge of the copied image is
free from shadows.
Papar lead edge
If the printed image at the leading edge of the copied image
contains a shadow of the original table, then do the following
steps.
2) Go through the modes specified in Simulation 53-8.
SIMULATION 53-8
SPF SCANNING POSITION ADJUSTMENT. PRESS START.
2.MANUAL 25
Select 2, and press
[START] key.
SIMULATION 53-8
SPF SCANNING POSITION ADJUSTMENT. INPUT VALUE 1-70, AND
PRESS START.
2.MANUAL
3) Enter the adjustment value and press the Start key.
Repeat the above adjustments until an acceptable result is
obtained.
Image area
Shadow image of DSPF
Press [START] key, or press
[SYSTEM SETTINGS] key.
25
MX-M700N ADJUSTMENTS 6 – 27
8-C Adjust the copied image loss/void area in
DSPF mode
This adjustment is needed in the following situations:
* 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.
* The scanner (reading) section has been disassembled.
* The scanner (reading) unit has been replaced.
* U2 trouble has occurred.
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
Papar lead edge
10 20
FV+RV= 7.0 mm
Image loss (LIL)
No Image
Void (LV)
1) Go through the modes specified in Simulation 50-6.
SIMULATION 50-6
LEAD EDGE ADJUSTMENT(SPF). SELECT 0-10, AND PRESS
START.
0.TRAY SELECT 1
2.MAGNIFICATION 100
(ADJUSTMENT DATA)3.SIDE1
(IMAGE LOSS SETTING)
SIDE1: 5.LEAD_EDGE
SIDE2: 8.LEAD_EDGE
Select other than 0 - 2, and
press [START] key.
SIMULATION 50-6
LEAD EDGE ADJUSTMENT(SPF). INPUT VALUE 0-99, AND PRESS
START.
3.SIDE1
Press [START] key.
Select 1, and
press [START] key.
SIMULATION 50-6
LEAD EDGE ADJUSTMENT(SPF). NOW COPYING.
Select 0, and press [START] key.
SIMULATION 50-6
LEAD EDGE ADJUSTMENT(SPF). SELECT 1-16, AND PRESS
START.
(FEED TRAY)
1.TRAY1 2.TRAY2 3.TRAY3 4.TRAY4
5.BPT 6.LCC
(ABOVE+10: DUPLEX MODE)
Select 2, and press
[START] key.
Papar tail edge
No Image
Void (RV)
LIL = 1.5 mm
LV = 3.5 mm
No Image
TV = 3.5 mm
Void (TV)
No Image
Void (FV)
1.COPY START
50 4.SIDE2 50
15 6.FRONT/REAR 20 7.TRAIL_EDGE
15 9.FRONT/REAR 20 10.TRAIL_EDGE
Press [SYSTEM SETTING] key.
Press [SYSTEM SETTINGS]
key, or terminate copying.
Press [START] key or press
[SYSTEM SETTINGS] key.
Press [START] key, or press
[SYSTEM SETTINGS] key.
2
0
0
50
1