Sharp AR-C330 (serv.man5) Service Manual ▷ View online
AR-C330 SETTING AND ADJUSTMENTS 7 - 18
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.
between 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.
front frame side.
7) Set the test chart made in procedure 1) on the document
table, and make a copy on A3 (11 x 17") paper. Check that the
main scanning distortion is within the specified range.
main scanning distortion is within the specified range.
Repeat procedures 6) – 7) until the main scanning direction
distortion is within the specified range.
distortion is within the specified range.
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 direc-
tion is 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
according to the following formula.
Main scanning direction copy magnification ratio
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.
ADJ M12
Image focus (main scanning
direction copy magnification ratio)
adjustment (CCD position
adjustment)
direction copy magnification ratio)
adjustment (CCD position
adjustment)
=
(Original length – Copy length)
x 100 [%]
Original length
10
20
30
40
50
60
70
80
90
50
100110
120130140
(Example)
Fit 10mm of the scale with 10mm of the copied scale
and compare them.
Main scanning direction copy magnification ration
and compare them.
Main scanning direction copy magnification ration
=
100 – 99
x 100 = 1
100
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)
AR-C330 SETTING AND ADJUSTMENTS 7 - 19
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 magnifi-
cation ratio again.
If the copy magnification ratio is not in the range of 100 ± 1%, per-
form the following procedure.
form the following procedure.
Repeat procedures 12) and 13) until the copy magnification ratio is
within the range of 100 ± 1%.
within the range of 100 ± 1%.
13) Change the installing position in the CCD sub scanning direc-
tion 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 ± 1.0%) and the specified resolution is provided.
copy magnification ratio is adjusted to the specified level
(100 ± 1.0%) and the specified resolution is provided.
This adjustment must be performed in the following cases:
• When the copy magnification ratio in the copy image sub scan-
ning 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
installing position adjustment).
installing 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
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.
(100 ± 1%), the adjustment is completed.
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
direction copy magnification ratio is increased.
direction 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%.
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%).
within the specified range (100 ± 0.28%).
NOTE: Fix the adjustment value of SIM 48-1 adjustment mode (F
– R) to 50.
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.
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.
the direction of A.
One scale of scribe line corresponds to 0.2%.
ADJ M13
Sub scanning direction copy
magnification ratio adjustment
magnification ratio adjustment
A
B
10 20 30 40 50 60 70
80 90 50 100 110 120130 140
=
(Original~dimension – Copy dimension)
x 100 [%]
Original dimension
ADJ M14
Image position adjustment (Main
scanning direction) (Print engine)
scanning direction) (Print engine)
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)
AR-C330 SETTING AND ADJUSTMENTS 7 - 20
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.
the 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.
backward.
When the adjustment value is decreased, the image is shifted
forward.
forward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.1mm.
shift by about 0.1mm.
Repeat procedures 3) – 5) until the condition of procedure 4) is
satisfied.
satisfied.
If the above condition cannot be satisfied with the above proce-
dures, perform the following procedures.
dures, perform the following procedures.
6) Loosen the paper feed tray cover fixing screw, and shift the
installing position in the arrow direction.
Perform procedures from 2) again.
Perform the above procedures for all paper feed units.
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
procedures.
procedures.
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.
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%)
shift by about 0.4mm. (400%)
Repeat procedures 4) – 6) until the condition of procedure 5) is
satisfied.
satisfied.
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
perform SIM 50-1.
perform SIM 50-1.
(Adjustment item)
Adjustment items 1 – 3 can be adjusted either with SIM 50-1 or
with SIM 50-2.
with SIM 50-2.
The adjustment values 6 and 7 will affect the adjustment items 4
and 5 automatically.
and 5 automatically.
Therefore, adjusting the items 6 and 7 will lead to the same result
as adjusting the items 4 and 5 directly.
as adjusting the items 4 and 5 directly.
ADJ M15
Image position adjustment (Main
scanning direction) (Scanner
(Writing))
scanning direction) (Scanner
(Writing))
A
B
A–B =±2.0mm
Half tone
Half tone
Direction A
Direction B
ADJ M16
Image position, image loss, void
area adjustment
area adjustment
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 x 10
position and scale of 10mm x 10
L1
7
Distance between paper lead edge
and image lead edge x 10
and image lead edge x 10
L2
A
B
A – B = 4.0mm
(400%)
AR-C330 SETTING AND ADJUSTMENTS 7 - 21
1) Place a scale on the original table as shown below.
Note that the scale must be placed in parallel with the scan-
ning direction and that the scale lead edge must be in close
contact with the original guide plate.
ning direction 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.
7) Multiply X, Y, and Z by 10 to obtain L1, L2, and L3 respec-
tively. Enter the values of L1, L2, and L3.
L1 = X x 10
L2 = Y x 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
Lead edge void area: 4.0 ± 1.0mm
If the above specifications are not satisfied, perform the following
procedures.
procedures.
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 adjust-
ment value of RRC-A.
ment value of RRC-A.
Repeat procedures 10) to 12) until the above specification is satis-
fied.
fied.
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.
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.
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
Adjustment
item
Adjustment
value
Note
IMAGE
LOSS
LOSS
Lead edge
image loss
image loss
4.0 ± 1.0mm The greater the set value 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.
DEN-B Rear edge
void area
6.0 ± 1.0mm The greater the set value is,
the greater the void area is.
Image loss
Lead edge void area
Lead edge void area
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