Sharp AR-C150 (serv.man4) Service Manual ▷ View online
5) Change the height balance of the front frame side scanner rail.
Perform procedures 2) – 5) until there is no difference between
the left distortion and the right distortion.
the left distortion and the right distortion.
6) When there is no difference between the left distortion and the
right distortion, change the height of the scanner rail on the front
frame side.
frame side.
7) Set the test chart made in procedure 1) on the document table,
and make a copy on A3 (11
×
17") paper. Check that the main
scanning distortion is within the specified range.
Repeat procedures 6) – 7) until the main scanning direction distor-
tion is within the specified range.
Repeat procedures 6) – 7) until the main scanning direction distor-
tion is within the specified range.
ADJ M12
Image focus (main scanning direction
copy magnification ratio) adjustment
(CCD position adjustment)
copy magnification ratio) adjustment
(CCD position adjustment)
This adjustment must be performed in the following cases:
•
When the CCD unit is removed from the machine.
•
When the CCD unit is replaced.
•
When the copy image focus is improper.
•
When the copy magnification ratio in the main scanning direction is
improper.
improper.
1) Enter the SIM 48-1 mode.
2) Set the set item B to 50 (initial value).
3) As shown in the figure below, place a scale on the original table.
4) Make a normal copy on A4 paper.
5) Compare the scale image length and the actual scale length.
6) Obtain the main scanning direction copy magnification ratio ac-
cording to the following formula.
Main scanning direction copy magnification ratio
=
(
Original length – Copy length
)
Original length
×
100 [%]
(Example) Fit 10mm of the scale with 10mm of the copied scale and
compare them.
Main scanning direction copy magnification ration
Main scanning direction copy magnification ration
=
100 – 99
100
×
100 = 1
7) Remove the original guide L and R, and remove the table glass.
8) Remove the dark box cover.
9) Remove the slide pin of the front cover unit.
10) Loosen the CCD unit fixing screws.
∗
Never loosen the screws which are not indicated in the figure
above. If loosened, the CCD unit must be replaced.
above. If loosened, the CCD unit must be replaced.
10
20
30
40
50
60
70
80
90
50
100110
120130140
10
20
90
100
110
10
20
90
100
110
1.0mm
100mm scale
(Original)
(Original)
Copy image
(1mm (1%)
shorter than the
original)
(1mm (1%)
shorter than the
original)
7 – 20
11) Insert the slide pin as shown below, and make positioning in the
sub scanning direction. (Initial positioning is completed.)
12) Make a copy in the initial position and check the copy
magnification ratio again.
If the copy magnification ratio is not in the range of 100
±
1%, perform
the following procedure.
Repeat procedures 12) and 13) until the copy magnification ratio is
within the range of 100
Repeat procedures 12) and 13) until the copy magnification ratio is
within the range of 100
±
1%.
When the copy image is longer than the original, move in the
direction of B.
direction of B.
When the copy image is shorter than the original, move in the
direction of A.
direction of A.
One scale of scribe line corresponds to 0.2%.
13) Change the installing position in the CCD sub scanning direction
to adjust the magnification ratio.
NOTE: Due to the structure of the optical system, when the CCD unit
fixing position is changed with SIM 48-1 set to 50, the copy
magnification ratio is adjusted to the specified level (100
magnification ratio is adjusted to the specified level (100
±
1.0%) and the specified resolution is provided.
ADJ M13
Sub scanning direction copy
magnification ratio adjustment
magnification ratio adjustment
This adjustment must be performed in the following cases:
•
When the copy magnification ratio in the copy image sub scanning
direction is improper.
direction is improper.
•
When the scanner motor is replaced.
•
When the scanner motor control PWB is replaced.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
Before this adjustment, perform the focus adjustment (CCD unit in-
stalling position adjustment).
stalling position adjustment).
1) Place a scale on the original table as shown below.
2) Enter the SIM 48-1 mode.
3) Make a normal copy and obtain the copy magnification ratios.
Copy magnification ratio
=
(
Original
dimension
– Copy dimension
)
Original dimension
×
100 [%]
4) Check that the copy magnification ratio is within the specified
range (100
±
1%).
If the copy magnification ratio is within the specified range (100
±
1%), the adjustment is completed.
If not, perform the following procedure.
If not, perform the following procedure.
5) Change the scan mode adjustment value of SIM 48-1.
When the adjustment value is increased, the sub scanning direc-
tion copy magnification ratio is increased.
A change in the adjustment value by 1 corresponds to a change in
the copy magnification ratio by about 0.1%.
Repeat procedures 3) – 5) until the coy magnification ratio is
within the specified range (100
tion copy magnification ratio is increased.
A change in the adjustment value by 1 corresponds to a change in
the copy magnification ratio by about 0.1%.
Repeat procedures 3) – 5) until the coy magnification ratio is
within the specified range (100
±
0.28%).
NOTE: Fix the adjustment value of SIM 48-1 adjustment mode (F –
R) to 50.
ADJ M14
Image position adjustment (Main
scanning direction) (Print engine)
scanning direction) (Print engine)
This adjustment must be performed in the following cases:
•
When the paper tray is replaced.
•
When the paper tray section is disassembled.
•
When the manual paper feed tray is replaced.
•
When the manual paper feed tray is disassembled.
•
When the duplex section is disassembled.
•
When the duplex section is installed or replaced.
•
When the large capacity paper feed tray is installed or replaced.
•
When the large capacity paper feed tray is disassembled.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
1) Enter the SIM 50-10 mode.
2) Select the paper feed mode to be adjusted with the scroll key.
3) Press the [EXECUTE] key.
The adjustment pattern is printed.
A
B
10 20 30 40 50 60 70 80 90 50 100 110 120130 140
10
20
90
100
110
10
20
90
100
110
10
20
90
100
110
(Example 2)
Copy B longer
than the original
Copy B longer
than the original
(Example 1)
Copy A shorter
than the original
Copy A shorter
than the original
Scale
(Original)
(Original)
7 – 21
4) Check the adjustment pattern image position.
Measure the dimensions from the paper center to the front and the
rear edge of the adjustment pattern to check that they are the
same.
rear edge of the adjustment pattern to check that they are the
same.
If A – B =
±
2.0mm, there is no need to adjust.
If the above condition is not satisfied, perform the following proce-
dure.
dure.
5) Change the adjustment value.
(Enter the adjustment value and press the [OK] key.)
When the adjustment value is increased, the image is shifted
backward.
When the adjustment value is decreased, the image is shifted for-
ward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.1mm.
When the adjustment value is increased, the image is shifted
backward.
When the adjustment value is decreased, the image is shifted for-
ward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.1mm.
Repeat procedures 3) – 5) until the condition of procedure 4) is satis-
fied.
If the above condition cannot be satisfied with the above procedures,
perform the following procedures.
fied.
If the above condition cannot be satisfied with the above procedures,
perform the following procedures.
6) Loosen the paper feed tray cover fixing screw, and shift the install-
ing position in the arrow direction.
Perform procedures from 2) again.
Perform procedures from 2) again.
Perform the above procedures for all paper feed units.
ADJ M15
Image position adjustment (Main
scanning direction) (Scanner (Writing))
scanning direction) (Scanner (Writing))
This adjustment must be performed in the following cases:
•
When the scanner (reading) section is disassembled.
•
When the scanner (reading) unit is replaced.
•
When the RADF section is disassembled.
•
When the RADF unit is installed.
•
When the RADF unit is replaced.
•
When a U2 trouble occurs.
•
When the ICU main PWB is replaced.
•
When the EEPROM of the ICU main PWB is replaced.
1) Set the adjustment chart on the document table.
2) Enter the SIM 50-12 mode.
The copy magnification ratio is automatically set to 400%.
3) Select the OC mode with the scroll key.
4) Press the COPY key. A copy is made.
5) Check the copy image center position.
If A – B =
±
4.0mm, there is no need to adjust. (400%)
If the above condition is not satisfied, perform the following proce-
dures.
dures.
6) Change the adjustment value.
(Enter the adjustment value and press the OK key.)
When the adjustment value is increased, the image is shifted
backward. When the adjustment value is decreased, the image is
shifted forward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.4mm. (400%)
When the adjustment value is increased, the image is shifted
backward. When the adjustment value is decreased, the image is
shifted forward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.4mm. (400%)
Repeat procedures 4) – 6) until the condition of procedure 5) is satis-
fied.
fied.
ADJ M16
Image position, image loss, void area
adjustment
adjustment
This adjustment must be performed in the following cases:
•
When the scanner (reading) section is disassembled.
•
When the scanner (reading) unit is replaced.
•
When the resist roller section is disassembled.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
This adjustment uses SIM 50-2 and SIM 50-1.
The above two simulations are used in the following manner.
SIM 50-2: Rough adjustment
SIM 50-1: Fine adjustment
SIM 50-1: Fine adjustment
If the desired value is obtained by SIM 50-2, there is no need to per-
form SIM 50-1.
form SIM 50-1.
(Adjustment item)
No.
Adjustment item
SIM 50-2
set item
SIM 50-1
set item
Adjustment
value
1
Lead edge image loss
IMAGE
LOSS
LOSS
IMAGE
LOSS
LOSS
4.0
±
1.0mm
2
Lead edge void area
DEN-A
DEN-A
4.0
±
1.0mm
3
Rear edge void area
DEN-B
DEN-B
6.0
±
1.0mm
4
Image reference position
RRC-A
5
Paper timing
RRC-B
6
Distance between image lead edge
position and scale of 10mm
position and scale of 10mm
×
10
L1
7
Distance between paper lead edge
and image lead edge
and image lead edge
×
10
L2
Adjustment items 1 – 3 can be adjusted either with SIM 50-1 or with
SIM 50-2.
SIM 50-2.
The adjustment values 6 and 7 will affect the adjustment items 4 and
5 automatically.
5 automatically.
Therefore, adjusting the items 6 and 7 will lead to the same result as
adjusting the items 4 and 5 directly.
adjusting the items 4 and 5 directly.
A
B
A– B =±2.0mm
Half tone
Half tone
Direction A
Direction B
A
B
A – B = 4.0mm
(400%)
7 – 22
1) Place a scale on the original table as shown below.
Note that the scale must be placed in parallel with the scanning di-
rection and that the scale lead edge must be in close contact with
the original guide plate.
rection and that the scale lead edge must be in close contact with
the original guide plate.
2) Enter SIM 50-2.
3) Set IMAGE LOSS and DEN-A to "20".
4) Set all the set items of L1 and L2 to "0".
5) Make a copy at 400%. (Original table mode)
6) Measure the copied image dimensions X and Y.
X: Distance between the copy image lead edge and the scale of
10mm
Y: Distance between the paper lead edge and the copy image
lead edge.
7) Multiply X, Y, and Z by 10 to obtain L1, L2, and L3 respectively.
Enter the values of L1, L2, and L3.
L1 = X
×
10
L2 = Y
×
10
8) Cancel the simulation, make a copy, and check that the lead
edge image loss and void area are within the specified range
shown below.
shown below.
Lead edge image loss: 4.0
±
1.0mm
Lead edge void area: 4.0
±
1.0mm
If the above specifications are not satisfied, perform the following pro-
cedures.
cedures.
9) Enter SIM 50-1.
10) Set a scale in the same manner as procedure 3), and make a
copy at 50% and at 400% in the original table mode.
11) Measure the distance between the paper lead edge and the
copy image lead edge of 50% copy and of 400% copy.
12) Check that there is no difference between the above distance of
50% copy and that of 400% copy.
If there is a difference of 1.5mm or above, change the
adjustment value of RRC-A.
adjustment value of RRC-A.
Repeat procedures 10) to 12) until the above specification is satisfied.
13) If the lead edge void area is not within the specified range,
change the DEN-A value.
14) If the lead edge void area is not within the specified range,
change the IMAGE LOSS value.
15) If the rear edge void area is not within the specified range,
change the DEN-B value.
Adjustment
item
Adjustment
value
Note
IMAGE
LOSS
Lead edge
image loss
image loss
4.0
±
1.0mm
The greater the set value is,
the greater the image loss is.
the greater the image loss is.
DEN-A Lead edge
void area
4.0
±
1.0mm
The greater the set value is,
the greater the void area is.
the greater the void area is.
DEN-B Rear edge
void area
6.0
±
1.0mm
The greater the set value is,
the greater the void area is.
the greater the void area is.
10 20 30 40 50 60 70 80 90 50 100110120130140
10
20
30
40
50
X
Y
Paper lead
edge
edge
400% enlarged copy
Image loss
Lead edge void area
Lead edge void area
7 – 23
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