Adjusting The Image Position, Image Loss, And Void Area - Sharp MX-M550U Service Manual

(Scan off-center adjustment)
1) Place an original on the DSPF original tray.
2) Press the Start key.
Since the front side and back side images are copied onto sep-
arate sheets, check the off-center of the back side image.
If the off-center is 0 2.7 mm, no adjustment is required.
original
a
b
If the above requirement is not met, do the following steps.
3) Using the numeric keypad, change the adjustment value in
steps of 0.1 mm to adjust the scan image off-center. A larger
setting shifts the printed image toward the rear side.
4) Press the P or Start key.
Pressing the Start key starts copy operation as well as apply-
ing the adjustment value.
5) Check the off-center of the printed image.
Repeat the above adjustments until an acceptable result is
obtained.
ADJ 8
Adjusting the image position,
image loss, and void area
8-A Adjust copied image loss/void area in
original table mode
This adjustment is needed in the following situations:
* The paper feed section has been disassembled.
* 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.
* The LSU has been replaced.
* U2 trouble has occurred.
copy
1)
MX-M700N ADJUSTMENTS 6 – 25
Papar lead edge
LIL = 1.5 mm
10 20 LV
TV
FV+RV= 7.0 mm
Image loss (LIL)
No Image
Void (LV)
Go through the modes specified in Simulation 50-1.
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.
0.TRAY SELECT 1 1.COPY START
2.MAGNIFICATION 100
(ADJUSTMENT DATA) 3.RRCA
(IMAGE LOSS SETTING) 5.LEAD
(VOID SETTING) 7.LEAD_EDGE(DENA)
8.TRAIL_EDGE(DENB)
Select other than 0 - 2, and
press [START] key.
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. INPUT VALUE 0-99, AND PRESS
START.
3.RRCA
Press [START] key.
Select 1, and
press [START] key.
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. NOW COPYING.
Select 0, and press [START] key.
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. SELECT 1-6, AND PRESS START.
(FEED TRAY)
1.TRAY1 2.TRAY2 3.TRAY3 4.TRAY4
5.BPT 6.LCC
Select 2, and press
[START] key.
SIMULATION 50-1
LEAD EDGE ADJUSTMENT.
(MAGNIFICATION)
INPUT 25-400(%)
Item
0 TRAY SELECT Paper feed tray selection
1 COPY START Copy START (Default)
2 MAGNIFICATI Print magnification ratio
ON
(Lead edge adjustment value)
3 RRCA Document scan start position
adjustment value
4 RRCB Resist roller clutch ON timing
adjustment value
Papar tail edge
No Image
Void (RV)
= 3.5 mm
No Image
= 3.5 mm
Void (TV)
No Image
Void (FV)
50 4.RRCB 50 10.SIDE2 ADJ.
15 6.SIDE 20
50
30 9.FRONT/REAR 30
Press [SYSTEM SETTINGS] key.
50
Press [SYSTEM SETTING] key,
or terminate copying.
Press [START] key,
or press [SYSTEM SETTINGS] key.
Press [START] key, or press
[SYSTEM SETTINGS] key.
100
Setting
Content
range
1 – 6
–
25 –
400%
0 – 99
2
50
1
Default
–
–
–
50