Sharp AR-M35 / AR-M450 (serv.man12) Service Manual ▷ View online
AR-M350 ADJUSTMENTS 9-4
B. OC scan distortion adjustment
(MB-B rail height adjustment)
•This adjustment requires a high-level preciseness.
It is easier to perform the scanner unit distortion adjustment previously
It is easier to perform the scanner unit distortion adjustment previously
described.
Before performing this adjustment, the following adjustment must have
been completed.
•LSU right angle adjustment
1) Make a test chart as shown below. (Print a self-print pattern 71.)
2) Make a copy from the table glass, and check it.
At that time, set the test chart correctly. If it is set in a distorted
position, the adjustment cannot be made correctly.
position, the adjustment cannot be made correctly.
3) If the output value is not in the specified range, perform the following
adjustment.
4) Remove the front cabinet in front of the scanner, and check that
installing position of the MB rail.
5) Loosen the screw at the right of the MB rail to adjust.
<Specifications>
C. Vertical image distortion balance adjustment
(Copy lamp unit installing position adjustment)
1) Insert the front/rear mirror base drive wire into the frame groove and
press and fix it with the wire holder. At that time, do not tighten the
wire fixing screw. Change the direction of the lamp positioning plate.
(F and R)
2) Push the copy lamp unit onto the positioning plate, and tighten the
wire fixing screw.
<Note for assembling the copy lamp unit>
After fixing, manually shift the copy lamp unit a few times to check that it
moves smoothly.
D. Vertical image distortion balance adjustment
(No. 2/3 mirror base unit installing
positionadjustment)
positionadjustment)
This adjustment is to adjust the parallelism of the mirror base to the OPC
drum surface and the original surface.
1) Manually turn the mirror base drive pulley to bring mirror base B into
contact with mirror base positioning plate.
If, at that time, the front frame side and the frame side of mirror base
B are brought into contact with the mirror base positioning plate
simultaneously, the parallelism is correct and there is no need for
simultaneously, the parallelism is correct and there is no need for
adjustment.
Measurement
point
Specification
Set value
OC scan
distortion
adjustment
distortion
adjustment
Angle
in the
above figure
= 90°±0.13°
1 scale = about
0.25°shift in
0.25°shift in
) !"#$%&
AR-M350 ADJUSTMENTS 9-5
E. Vertical (sub scanning direction) distortion
adjustment [Winding pulley position adjustment]
This adjustment is executed in the following cases:
•When the mirror base drive wire is replaced.
•When the mirror base drive wire is replaced.
•When the lamp unit, or No. 2/3 mirror holder is replaced.
•When a copy shown below is made.
1) Set A3 white paper on the original table as shown below.
2) With the original cover open, make a normal (X 1.0) copy.
3) Measure the black distance at the lead edge and the rear edge of the
copy paper.
If La = Lb, the procedures 4) through 7) are not required.
4) Loosen the fixing screw of the front or the rear frame mirror base
drive pulley.
•If La < Lb, turn the rear frame mirror base drive pulley in direction B.
(Do not move the mirror base drive pulley shaft.)
•If La > Lb, turn the rear frame mirror base drive pulley in direction A.
(Do not move the mirror base drive pulley shaft.)
5) Tighten the fixing screw of the mirror base drive pulley.
6) Perform procedures 1) through 3).
6) Perform procedures 1) through 3).
7) If La is not equal to Lb, perform procedures 4) and 5).
If La = Lb, the adjustment is completed.
Repeat procedures 1) through 6) until La = Lb.
Repeat procedures 1) through 6) until La = Lb.
F. Height adjustment of original detection light
emitting unit
1) Execute SIM 41-3.
2) Open the original cover. Press the original detection light-emitting
unit gradually with your finger to check the height at which OCSW
display on the LCD is highlighted.
3) Open the original detection light-emitting unit gradually to check the
height at which OCSW display turns to the normal state.
4) If the heights are out of the specified range in procedures 2) and 3),
adjust the height of the original detection light emitting unit by shifting
the adjustment screw.
5) After completion of adjustment, press the original detection light
emitting unit fully downward with your finger and release it. Check
that the original detection light-emitting unit moves up smoothly.
<Specification>
G. Orignal size detection photo sensor check
1) Execute SIM 41-1.
2) Put A3 (or WLT) paper on the table glass, and check that all the
sensor displays (except for OCSW) on the LCD are highlighted.
3) Gradually move the unit to the left, and check that the highlighted
sensor displays turn off one by one sequentially.
Lb
La
Original
Paper
exit
direction
Copy
Paper exit direction
La : Lead edge black background section
Lb : Rear edge black background section
A
B
Front side
Rear side
Adjust screw
Specification
Adjustment position
Original size
detection position
detection position
32±0.5mm
Height adjustment screw SIM 41-3
32±0.5mm
SIMULATION 41-3
PD SENSOR DATA DISPLAY.
OCSW
PD1[128]: 200
PD SENSOR DATA DISPLAY.
OCSW
PD1[128]: 200
PD2[128]: 200
PD3[128]: 50
PD4[128]: 52
PD5[128]: 51
PD6[128]: 50
PD7[128]: 52
SIMULATION 41-1
PD SENSOR CHECK..
OCSW
PD SENSOR CHECK..
OCSW
PD1 PD2 PD3
PD4 PD5 PD6 PD7
(The detected sensors are highlighted.)
* !"#$%&
AR-M350 ADJUSTMENTS 9-6
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
When COMPLETE is displayed, the adjustment is normally
completed.
*
If ERROR is displayed, the error PD sensor is displayed.
<Specification>
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>
J. DSPF hinge diagonal adjustment (Front)
Before executing this adjustment, the following adjustments must have
been completed.
•LSU right angle adjustment
•DSPF height adjustment
•DSPF height adjustment
1) Make a test chart as shown below. (Print a self-print pattern 71.)
2) Make a copy with DSPF.
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>
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.
4) If not, adjust with SIM 48-1.
5) Make a copy again and check again that the value is within the
specification.
<Specification>
Specification
Adjustment
Document size detection photo sensor
adjustment
adjustment
COMPLETE
SIM 41-2
Specification
Adjustment
position
Distance between
dove (Reference plate)
and table glass
dove (Reference plate)
and table glass
3-point contact
(Left front/Left rear/Right
front when viewed from the
front)
(Left front/Left rear/Right
front when viewed from the
front)
Hinge
adjustment set
screw
adjustment set
screw
SIMULATION 41-2
PD SENSOR ADJUSTMENT. SELECT1-2, AND PRESS START.
(PLEASE OPEN THE ORIGINAL COVER.)
1. NO ORIGINAL
2. A3 ORIGINAL
PD SENSOR ADJUSTMENT. SELECT1-2, AND PRESS START.
(PLEASE OPEN THE ORIGINAL COVER.)
1. NO ORIGINAL
2. A3 ORIGINAL
1
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE (or " ERROR at
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE (or " ERROR at
PD1 PD2
...")
A3 ORIGINAL ... INCOMPLETE
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE
A3 ORIGINAL ... COMPLETE (or " ERROR at
PD SENSOR ADJUSTMENT.
NO ORIGINAL ... COMPLETE
A3 ORIGINAL ... COMPLETE (or " ERROR at
PD1 PD2
...")
Press [CUSTOM SETTING] key.
Press [CUSTOM SETTING] key.
Select 1 and press [START] key.
Select 1 and press [START] key.
(In case of an error)
a
b
a
b
a
b
Specification
Adjustment
position
Skew feed
Within ±3mm
Hinge R
adjustment screw
adjustment screw
Lead edge skew
A4 or less: 1mm or less
Greater than A4: 1.5mm or less
Greater than A4: 1.5mm or less
Eccentric screw for
CIS adjustment
CIS adjustment
Specification
Adjustment
position
Adjustment
value
Main scan direction
magnification ratio
magnification ratio
±0.5%
SIM48-1
Set value 1:
0.1% change
0.1% change
Sub scan direction
magnification ratio
magnification ratio
a
b
a
b
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
MAGNIFICATION ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
1. COPY START
2. MAGNIFICATION
3. CCD(MAIN)
3. CCD(MAIN)
4. CCD(SUB)
5. SPF(SUB)
6. CIS(MAIN)
2
50
100
1
50
50
50
+ !"#$%&
AR-M350 ADJUSTMENTS 9-7
(2) DSPF scan magnification ratio
1) Set a chart of print pattern 70 on SPF/DSPF.
2) Make a copy. (In the case of DSPF back copy, make a single copy in
2) Make a copy. (In the case of DSPF back copy, make a single copy in
the duplex mode.)
3) Check that the output paper satisfies the specifications.
4) If not, adjust with SIM 48-1.
4) If not, adjust with SIM 48-1.
5) Make a copy again, and check that the output paper satisfies the
specifications.
<Specifications>
*
The SPF main scan direction magnification ratio is common with OC.
L. OC scan lead edge adjustment
Before executing this adjustment, the following adjustment must have
been completed.
•OC scan magnification ratio adjustment
1) Set an original on the original table.
2) Enter SIM 50-1.
3) Make a copy.
3) Make a copy.
4) Select the number to be set on the right of the LCD, and perform the
adjustment of each item.
5) Select "3: RRC-A" and change the value with 10-key to perform the
copy adjustment.
6) Select "4: RRC-B" so that the distance between the paper lead edge
and the copy image lead edge is within 3.0mm. Change the value
with 10-key and perform the copy adjustment.
7) Check that the lead edge shift is within 3.0mm. If not, perform the
fine adjustment of procedure 5) and 6).
8) Select "5: DEN-B" so that the white spot in the latter half of copy
(rear edge void) is within 3.0mm. Change the value with 10-key and
perform the copy adjustment.
perform the copy adjustment.
(The rear void adjustment is changed by the step of 0.1mm.)
•When the rear edge void is too small, increase the value.
•When the rear edge void is too great, decrease the value.
•When the rear edge void is too great, decrease the value.
9) Press [CA] key to cancel the simulation.
<Specification>
Specifications
Adjustment
position
Adjustment
value
SPF sub scan direction
magnification ratio
magnification ratio
±0.5%
SIM 48-1
Set value 1:
0.1% change
0.1% change
DSPF main scan (back)
direction magnification
ratio
direction magnification
ratio
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
MAGNIFICATION ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
1. COPY START
2. MAGNIFICATION
3. CCD(MAIN)
3. CCD(MAIN)
4. CCD(SUB)
5. SPF(SUB)
6. CIS(MAIN)
2
50
100
1
50
50
50
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.
0. TRAY SELECT
1. COPY START
2. MAGNIFICATION
3. RRCA
3. RRCA
4. RRCB
5. DENB
6. IMAGE LOSS(LEAD)
7. IMAGE LOSS(SIDE)
8. DENA
9. FR_VOID
2
15
20
100
1
50
50
50
30
30
Specifi-cation
Set value
Default
Range
RRCA
Original scan start position
50
0 ~ 99
Set value 1: 0.2mm shift
RRCB
Image and paper position adjustment on the OPC drum
50
0 ~ 99
Set value 1: 0.1mm shift
DENA
Lead edge void adjustment
Total 8mm or less
35
0 ~ 99
Set value 1: 0.1mm shift
DENB
Rear edge void adjustment
35
0 ~ 99
Set value 1: 0.1mm shift
IMAGE LOSS (LEAD)
Both sides image loss
4.0mm or less
15
0 ~ 99
Set value 1: 0.1mm shift
IMAGE LOSS (SIDE)
F/R void quantity
Total 8mm or less
20
0 ~ 99
Set value 1: 0.1mm shift
FR_VOID
Total 8mm or less
35
0 ~ 99
Set value 1: 0.1mm shift
, !"#$%&
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