Sharp AR-M350U Service Manual page 140

H. Orignal size detection photo sensor adjustment
1) Execute SIM 41-2.
* At that time, check that the scanner mirror base is at the home
position.
2) Open the document cover. Select 1 without placing paper on the
table glass, and press START.
3) When COMPLETE is displayed on the LCD, press CUSTOM
SETTING to return to the initial screen.
4) Place A3 (or WLT) paper on the table glass, select 2 and press
START.
When COMPLETE is displayed, the adjustment is normally
completed.
* If ERROR is displayed, the error PD sensor is displayed.
SIMULATION 41-2
PD SENSOR ADJUSTMENT. SELECT1-2, AND PRESS START.
(PLEASE OPEN THE ORIGINAL COVER.)
1. NO ORIGINAL
2. A3 ORIGINAL
Select 1 and press [START] key.
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE (or " ERROR at
A3 ORIGINAL ... INCOMPLETE
Select 1 and press [START] key.
(In case of an error)
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE
A3 ORIGINAL ... COMPLETE (or " ERROR at
<Specification>
Document size detection photo sensor
adjustment
I. DSPF hinge height adjustment
1) Close the DSPF.
2) Check that the dove and the reference plate are in contact with the
table glass. If not, adjust with the setscrew.
<Specification>
Distance between 3-point contact
dove (Reference plate) (Left front/Left rear/Right
and table glass front when viewed from the
front)
1
Press [CUSTOM SETTING] key.
PD1 PD2...")
Press [CUSTOM SETTING] key.
PD1 PD2...")
Specification Adjustment
COMPLETE SIM 41-2
>
=
=
>
=
>
Specification Adjustment
position
Hinge
adjustment set
screw
AR-M350 ADJUSTMENTS 9-6
J. DSPF hinge diagonal adjustment (Front)
Before executing this adjustment, the following adjustments must have
been completed.
•LSU right angle adjustment
•DSPF height adjustment
1) Make a test chart as shown below. (Print a self-print pattern 71.)
2) Make a copy with DSPF.
3) Measure the rear side and check that the value is in the specified
range.
4) If the value is not in the specified range, loosen the nut which is fixing
the hinge R adjustment screw, and adjust the adjustment screw.
5) Make a copy again, and check again that the value is in the specified
range.
6) Tighten the nut to fix the adjustment screw.
>
=
<Specification>
Specification
Skew feed Within ±3mm
Lead edge skew A4 or less: 1mm or less
Greater than A4: 1.5mm or less
K. Scan magnification ratio adjustment
(1) OC scan magnification ratio adjustment
1) Place a print of self-print pattern (A3 or WLT) 70 or a scale on the
table glass.
2) Close the original cover, and make a copy.
3) Check that the value is within the specification.
4) If not, adjust with SIM 48-1.
5) Make a copy again and check again that the value is within the
specification.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT 1 1. COPY START
2. MAGNIFICATION
100
50
3. CCD(MAIN) 4. CCD(SUB)
6. CIS(MAIN) 50
<Specification>
Specification
Main scan direction ±0.5%
magnification ratio
Sub scan direction
magnification ratio
>
=
Adjustment
position
Hinge R
adjustment screw
Eccentric screw for
CIS adjustment
2
50 50
5. SPF(SUB)
Adjustment Adjustment
position value
SIM48-1 Set value 1:
0.1% change