Sharp MX-M182 / MX-M182D (serv.man5) Service Manual ▷ View online
MX-M182 ADJUSTMENT 6-2
(3) Developing bias voltage check
Note: Use a digital multi-meter with an internal resistance of 10M
or
more.
1) Set the digital multi-meter range above 500 Vdc.
2) Put the test rod of the digital multi-meter on the developing bias
voltage output check pin.
3) Turn on the power, execute SIM25-1.
<Specification>
(4) Grid bias voltage check
Note: Use a digital multi-meter with an internal resistance of 10M
or
more.
1) Set the digital multi-meter range above 600 Vdc.
2) Put the test rod of the digital multi-meter on the grid bias voltage
output check pin.
3) Turn on the power.
(The voltage is outputted in the grid bias High output mode during
warming up, and in the grid bias Low output mode when warming up
warming up, and in the grid bias Low output mode when warming up
is completed.)
<Specification>
B. Mechanism section
(1) Image position adjustment
a. OC image lead edge position adjustment (SIM 50-1)
Note:In advance to this adjustment, the sub scanning magnification ratio
adjustment must be performed.
1) Set a scale on the OC table as shown below.
2) Make a copy.
3) Check the copy output. If necessary, perform the following
adjustment procedures.
4) Execute SIM 50-01.
Select a desired mode with the arrow keys, enter the adjustment
value with 10-key, and press [OK] key.
value with 10-key, and press [OK] key.
When [START] key is pressed, a sheet is printed.
<Adjustment specification>
5) Set the OC lead edge position set value (RRC-A) to [1]
The OC image scanning start position is shifted inside the document
edge.
6) Set the main cassette lead edge void adjustment value (DEN-A)* to [1]
The lead edge void becomes the minimum.
Mode
Specification
Developing bias voltage
DC - 400±10V
Mode
Specification
Grid bias LOW
DC - 380±8V
Grid bias HIGH
DC - 525±10V
Adjustment
mode
SIM
Display
text array
Set
value
Spec
value
Set
range
OC image lead
edge position
edge position
SIM
50-1
50-1
RRC-A
R/0.1
Lead edge
void:
void:
1 - 4mm
Image loss:
3mm or
less
3mm or
less
1 - 99
Main cassette
print start
position
print start
position
TRAY1
H/0.1
2nd cassette
print start
position
print start
position
TRAY2
Multi bypass
tray print start
position
tray print start
position
MFT
Lead edge void
DEN-A
B/0.05
(Mode selection window 1)
Sim50-1 LEAD EDGE
1:TRAY1
2:TRAY2
3:MFT
1/2 [ 1- 99]
2:TRAY2
3:MFT
1/2 [ 1- 99]
50
50
50
50
50
(Mode selection window 2)
Sim50-1 LEAD EDGE
4:DEN-A
5:RRC-A
6:DEN-B
2/2 [ 1- 99]
5:RRC-A
6:DEN-B
2/2 [ 1- 99]
50
1
50
50
Ready to copy.
S
100%
A4
(Copy start window)
Copies in progress.
S
100%
A4
(Copy execution window)
MX-M182 ADJUSTMENT 6-3
7) Set the main cassette print start position value (TRAY1) to [1] and
make a copy.
The print start position is shifted inside the document edge.
8) Measure the image loss R of the copied image. Enter the set value of
the image scanning lead edge position (RRC-A) again.
• 1 step of the set value corresponds to about 0.1mm shift.
• Calculate the set value from the formula below.
R/0.1(mm) = Image loss set value
R/0.1(mm) = Image loss set value
<R: Image loss measurement value (mm)>
Example:
4/0.1 = 40 = about 40
Note: If the set value is not obtained from the above formula, perform the
fine adjustment.
9) Measure the distance H between the paper lead edge and the image
print start position. Set the image print start position set value
(TRAY1) again.
• 1 step of the set value corresponds to about 0.1mm shift.
• Calculate the set value from the formula below.
H/0.1(mm) = Image print start position set value
<H: Print start position measurement value (mm)>
Example:
5/0.1 = 50 = about 50
Note: If the set value is not obtained from the above formula, perform the
fine adjustment.
10) Set the lead edge void adjustment value (DEN-A)* again.
• 1 step of the set value corresponds to about 0.1mm shift.
• 1 step of the set value corresponds to about 0.1mm shift.
• Calculate the set value from the formula below.
B/0.05 (mm) = Lead edge void adjustment value
<B: Lead edge void (mm)>
Example:
When setting the lead edge void to 2.5mm
:2.5 /0.05 = about 50
Note:If the set value is not obtained from the above formula, perform the
fine adjustment.
b. SPF image lead edge position adjustment (SIM50-6)
1) Set a scale on the OC table as shown below.
Note:Since the printed copy is used as a test chart, put the scale in
parallel with the edge lines.
2) Make a copy, Then use the copy output as an original to make an
SPF copy again.
3) Check the copy output. If necessary, perform the following
adjustment procedures.
4) Execute SIM 50-6.
5) Set the SPF lead edge position set value (SIDE1) so that the same
image is obtained as that obtained in the previous OC image lead
edge position adjustment.
5
10
5mm
4mm
*
The dimension varies depending on the model.
10
5mm
0mm
5
*
The scanning edge is set.
(A line may be printed by scanning the document edge.)
5
10
0mm
0mm
*
Fit the print edge with the paper edge, and perform the
lead edge adjustment.
5
10
2.5mm
2.5mm
(Mode selection window)
Ready to copy.
S
100%
A4
(Copy start window)
Copies in progress.
S
100%
A4
(Copy execution window)
Sim50-6 SPF EDGE
1:SIDE1
2:SIDE2
3:END EDGE
2:SIDE2
3:END EDGE
[ 1- 99]
50
50
50
50
50
MX-M182 ADJUSTMENT 6-4
<Adjustment specification>
c. Rear edge void adjustment (SIM50-1, SIM50-19)
1) Set a scale as shown in the figure below.
2) Set the document size to A4 (8.5" x 11"), and make a copy at 100%.
3) If necessary, perform the following adjustment procedure.
4) Execute SIM50-01 and select "DEN-B" with the arrow keys.
The currently set adjustment value is displayed.
5) Enter the set value and press the start key. The correction value is
stored and a copy is made.
<Adjustment specification>
d. Paper off center adjustment (SIM50-10)
1) Set a test chart (UKOG-0089CSZZ) on the document table.
2) Select a paper feed port and make a copy. Compare the copy and
2) Select a paper feed port and make a copy. Compare the copy and
the test chart. If necessary, perform the following adjustment
procedure.
3) Execute SIM 50-10. After completion of warm-up, shading is
performed and the currently set off center adjustment value of each
paper feed port is displayed.
4) Enter the set value and press the start key. The correction value is
stored and a copy is made.
<Adjustment specification>
e. Side edge void area adjustment (SIM26-43)
Note:Before performing this adjustment, be sure to check that the paper
off center adjustment (SIM 50-10) is completed.
1) Set a test chart (UKOG-0089CSZZ) on the document table.
2) Select a paper feed port and make a copy. Compare the copy and
the test chart. If necessary, perform the following adjustment
procedure.
procedure.
3) Execute SIM 26-43 and set the density mode to SIDE VOID (L),
SIDE VOID (R).
The currently set adjustment value is displayed.
4) Enter the set value and press the start key. The correction value is
stored.
<Adjustment specification>
Adjustment mode
SIM
Display
text
array
Set value Spec value
Set
range
SPF image lead
edge position
(1st print surface)
edge position
(1st print surface)
SIM
50-6
SIDE1 1 step:
0.1mm
shift
shift
Lead edge
void:
void:
1 - 4mm
Image loss:
3mm or
less
3mm or
less
1 - 99
Mode
SIM
Display
text array
Set value
Specifi-
cation
Set
range
Rear edge void
SIM
50-1
50-1
DEN-B
1 step:
0.1mm shift
0.1mm shift
4mm or
less
less
1 - 99
A4(8.5" x 11")
Paper rear edge
Scale image
Paper rear edge
Void amount (Standard value: 4mm or less)
Adjustment
mod
SIM
Display
text array
Set value
Specifi-
cation
Set
range
Tray1
SIM
50-10
TRAY1
Add 1:
0.1mm shift
to R side.
0.1mm shift
to R side.
Reduce 1:
0.1mm shift
to L side.
0.1mm shift
to L side.
Single:
Center
±2.0mm
1 - 99
Tray2
TRAY2
Tray3
TRAY3
Tray4
TRAY4
Manual paper
feed tray
BYPASS
Duplex
(Second print
surface)
DUPLEX
Adjustment
mode
SIM
Display
text array
Set value
Specifi-
cation
Set
range
Side void (left)
26-43
SIDE
VOID (L)
1 step:
0.5mm shift
0.5mm shift
0.5 - 4mm 1 - 99
Side void (right)
SIDE
VOID (R)
Sim50-10 PRT. CENTER
1:TRAY1
2:TRAY2
3:TRAY3
1/2 [ 1- 99]
2:TRAY2
3:TRAY3
1/2 [ 1- 99]
50
50
50
50
50
Sim50-10 PRT. CENTER
4:TRAY4
5:BYPASS
6:DUPLEX
2/2 [ 1- 99]
5:BYPASS
6:DUPLEX
2/2 [ 1- 99]
50
50
50
50
50
Sim26-43 SIDE VOID
1:SIDE VOID(L)
2:SIDE VOID(R)
2:SIDE VOID(R)
[ 0- 10]
3
3
3
MX-M182 ADJUSTMENT 6-5
(2) Main scanning direction (FR direction) distortion
balance adjustment
1) Remove the OC glass and the right cabinet.
2) Loosen the copy lamp unit wire fixing screw.
3) Manually turn the mirror base drive pulley and bring No. 2/3 mirror
base unit into contact with the positioning plate. At that time, if the
front frame side and the rear frame side of No. 2/3 mirror base unit
are brought into contact with the positioning plate at the same time,
are brought into contact with the positioning plate at the same time,
the mirror base unit parallelism is proper. If one of them is in contact
with the positioning plate, perform the adjustment of 4).
4) Loosen the set screw of the scanner drive pulley which is not in
contact with No. 2/3 mirror base unit positioning plate.
5) Without moving the scanner drive pulley shaft, manually turn the
scanner drive pulley until the positioning plate is brought into contact
with No. 2/3 mirror base unit, then fix the scanner drive pulley.
with No. 2/3 mirror base unit, then fix the scanner drive pulley.
6) Put No. 2/3 mirror base unit on the positioning plate again, push the
projections on the front frame side and the rear frame side of the
copy lamp unit to the corner frame, and tighten the wire fixing screw.
(1)
(1)
(2)
(4)
(3)
(3)
Wire fixing screw
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