DOWNLOAD Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual ↓ Size: 7.25 MB | Pages: 105 in PDF or view online for FREE

Model
MX-4100N MX-4101N MX-5000N MX-5001N (serv.man13)
Pages
105
Size
7.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual-Section 5-Adjustments
File
mx-4100n-mx-4101n-mx-5000n-mx-5001n-sm13.pdf
Date

Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual ▷ View online

MX-4101N  ADJUSTMENTS  5 – 31
 
12-B
DSPF mode image focus adjustment
This adjustment is required in the following cases:
* When the DSPF CCD unit is replaced.
* When the DSPF CCD unit is replaced.
* When the COPY/SCAN/FAX image focus is not properly
adjusted.
* When the DSPF unit is removed.
* When the DSPF unit is replaced.
1)
Make a duplex copy in DSPF mode.
2)
Make sure that the copied image on the back side of the paper
is satisfactorily focused.
If the image is not satisfactorily focused, do the following
steps.
3)
Open the door. Remove the screws, and remove the transport
PG upper.
4)
To prevent against shift of the CCD unit optical axis, mark the
CCD unit base as shown below.
5)
Loosen the CCD unit fixing screws (4 pcs.).
Never loosen the screws marked with .
Loosening these screws could possibly change the CCD
unit base optical axis.  Once the optical axis has been
changed, it cannot be corrected through on-site adjust-
ments. Solving such a problem requires the replacement of
the entire scanner unit.
6)
Slide the CCD unit in the arrow direction (CCD sub scanning
direction) to change the installing position.
When the copy image is longer than the original scale, shift the
CCD unit in the direction B. When the copy image is shorter
than the original scale, shift the CCD unit in the direction A.
One scale of mark-off line corresponds to 0.2%.
At that time, fix the CCD unit so that it is in parallel with the
scale on the front and the rear side of the CCD unit base.
* Fix the CCD unit so that it is in parallel with the line marked
in procedure 4).
7)
Make a copy and check the copy magnification ratio again.
If the copy magnification ratio is not in the range of 100 
± 1%,
repeat the procedures of 4) – 6) until the condition is satisfied.
NOTE: By changing the CCD unit fixing position with the simula-
tion 48-1 adjustment value at 50, the copy magnification
ratio is adjusted within the specified range (100 
± 1.0%)
and the specified resolution is obtained based on the opti-
cal system structure.
A
B
MX-4101N  ADJUSTMENTS  5 – 32
 
ADJ 13
RSPF/DSPF parallelism  
adjustment
 
13-A
RSPF height adjustment
1)
Make an RSPF height adjustment sheet
Cut copy paper in the longitudinal direction.
2)
Perform the adjustment according to the flowchart below.
20mm
A4/Letter size
<Flow chart>
<Work procedure>
a) Check section A.
D
Yes
No
Adjust hinge D
until there is a
resistance in
section A.
(Counter-
clockwise)
*
Check to insure that a slight resistance is felt when pulling out
the RSPF height adjustment sheet.
Slowly pull out the RSPF height adjustment sheet.
Place the RSPF height adjustment sheet between section A
and the SPF glass height adjustment resin surface (a), and
close the RSPF unit.
b) If it cannot be pulled out, turn the section D clockwise and
adjust in order to lift the RSPF unit.
If it can be pulled out without resistance, turn the section D
counterclockwise and adjust in order to move down the RSPF
unit.
Be careful not to cover the convex section of the glass
holding resin surface with the height adjustment sheet.
Start of the
adjustment
Check section A.
Is
there a resist-
ance?
The section
A is lowered
too much.
Turn the hinge
D to lift the
RSPF so that
there is a
resistance in
the section A.
(Clockwise)
a
A
MX-4101N  ADJUSTMENTS  5 – 33
E
Is there a
resistance in the
section B?
Yes
No
Increase the
clearance in
the section F
until there is a
resistance in
the section B.
However, the
max. is 5.0mm.
F
F
20mm
a
4.3
-
5.0mm
c) Adjust the section F.
*
If not, turn the section E to adjust.
Use a clearance gauge to check to confirm that the clearance
in the section F is 4.3mm - 5.0mm.
Turn section E clockwise to lift the RSPF unit. Turn it
counterclockwise to move down the RSPF unit.
* Insert a clearance gauge in the range of 20mm from the
edge (a) of the right lower cover of the base.
Adjust the
section F so that
the clearance is
4.3mm - 5.0mm.
a
MX-4101N  ADJUSTMENTS  5 – 34
E
Yes
Yes
No
No
End of the
adjustment
The bosses in section A
and B are excessively
pressed. (The right
side is separating.)
Adjust hinge
E until the
separation in
section C is
deleted.
(Counter-
clockwise)
Is
there a re-
sistance?
Is there
a separating
section.
Check section C.
e) If it can be pulled out without resistance, turn the hinge in
section E clockwise to adjust.
f) Check section C.
*
d) Check section B.
*
Check to insure that a slight resistance is felt when pulling out
the RSPF height adjustment sheet. (If the boss in section B is
in contact, it is O.K.)
Slowly pull out the RSPF height adjustment sheet.
Place the RSPF height adjustment sheet between section B
and the SPF glass height adjustment resin surface (a), and
close the RSPF unit.
Be careful not to put the book sensor (b) on the height
adjustment sheet.
Check section B.
a
B
b
b
C
b
C
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