Sharp AR-SP8 Service Manual ▷ View online
AR-SP8/RP8 ADJUSTMENTS 5 - 1
[5] ADJUSTMENTS
1. SPF (RSPF) scan position automatic
adjustment
Place a black chart so that it covers the SPF scan glass and the OC
glass together, and close the OC cover.
glass together, and close the OC cover.
When test command 53-08 is executed, the current adjustment value
is displayed as the initial display.
is displayed as the initial display.
* Default is 1. Adjustment range is 1 – 99. Adjustment unit 1 = about
0.127mm
* If the values are kept as the default values, SPF scan is not per-
formed properly. The front area of the proper scan position may be
scanned.
scanned.
In case of AUTO, press [START] key, and the mirror unit scans from
the home position to the SPF scan position with the adjustment value
displayed. The SPF glass cover edge position is calculated from the
difference between the SPFG glass cover edge and the OC side
document glass CCD output level. If the adjustment is normal, the
adjusted value is displayed. If abnormal, the error LED lights up with
the current set value displayed.
the home position to the SPF scan position with the adjustment value
displayed. The SPF glass cover edge position is calculated from the
difference between the SPFG glass cover edge and the OC side
document glass CCD output level. If the adjustment is normal, the
adjusted value is displayed. If abnormal, the error LED lights up with
the current set value displayed.
During the error LED is lighted, when [START] key is pressed again,
execution is performed again.
execution is performed again.
Operation
The operation is similar to test command 46-01. (In MANUAL)
OK/ERR display in AUTO
* Use a black chart (UKOG-0011QSZZ) or prepare a chart as shown
below.
Chart size: 300 x 100, prepared with cutting sheet No. 791 (Black) or
an equivalent one.
Chart size: 300 x 100, prepared with cutting sheet No. 791 (Black) or
an equivalent one.
2. RSPF (SPF) mode sub scanning direction
magnification ratio adjustment
Note: Before performing this adjustment, be sure to check that the OC
mode adjustment in copying has been completed.
1) Put a scale on the original table as shown below, and make a
normal copy (100%) on the front and the back surfaces to make a
test chart.
test chart.
Note:
Since the printed copy is used as a test chart, put the scale in
paralled with the edge lines.
paralled with the edge lines.
2) Set the test chart on the RSPF and make a duplex copy (D-D or D-
S) in the normal ratio (100%).
3) Compare the scale image and the actual image.
If necessary, perform the following adjustment procedures.
4) Execute TC 48-05.
5) The current front surface sub scanning direction magnification ratio
correction value is displayed in two digits on the display section.
To select SIDE1 and SIDE2, use [
To select SIDE1 and SIDE2, use [
←
/
→
] keys.
6) Enter the set value and press the start key.
When adjusting the RSPF, use [2-SIDED COPY] key to select
single/duplex after entering the one page print mode, performing 2-
page single copy.
single/duplex after entering the one page print mode, performing 2-
page single copy.
* When there is no document in SPF, copy is inhibited.
<Adjustment specification>
Mode
Display
item
Default
LED
SPF scan position auto
adjustment
adjustment
AUTO
1
COPY mode lamp
SPF scan position manual
adjustment
adjustment
MANU
1
PRINT mode lamp
Reason: To prevent erroneous detection by disturbing light of a
fluorescent lamp, etc.
<When OK>
<When ERR>
53-08 SPF AUTO
AUTO 100% ** OK
53-08 SPF AUTO
AUTO 100% ** ERR
6cm or more is required.
The size of the black chart (UKOG-0011QSZZ) is 297 x 420. Divide it
into four for use.
into four for use.
Mode
Display
item
Default
LED
Sub scan magnification ratio
adjustment on the surface of SPF/
RSPF document
adjustment on the surface of SPF/
RSPF document
SIDE1
50
COPY
mode lamp
mode lamp
Sub scan magnification ratio
adjustment on the surface of
RSPF document
adjustment on the surface of
RSPF document
SIDE2
50
PRINT
mode lamp
mode lamp
Adjustment
mode
Spec value
TC
Set value
Setting
range
Sub scanning
direction
magnification
ratio (SPF/RSPF
mode)
direction
magnification
ratio (SPF/RSPF
mode)
At normal:
±1.0%
±1.0%
48-5
Add 1:
0.1% increase
Reduce 1: 0.1%
decrease
0.1% increase
Reduce 1: 0.1%
decrease
1 – 99
AR-SP8/RP8 ADJUSTMENTS 5 - 2
3. Duplex adjustment (RSPF)
A. Adjusting the paper reverse position in memory
for duplex copying
This step adjusts the front surface printing (odd-number pages of a
document set) in the S-D mode copying and the leading edge position
of an image on even-number pages in the D-S mode.
document set) in the S-D mode copying and the leading edge position
of an image on even-number pages in the D-S mode.
That is, it covers the adjustment of the second surface printing mode
(image loss at the front edge of an image) in which image data is once
stored in memory.
(image loss at the front edge of an image) in which image data is once
stored in memory.
The image data is read, starting from its front end in the document
delivery direction (Reference direction of document setting in the OC
mode)and stored in memory.
delivery direction (Reference direction of document setting in the OC
mode)and stored in memory.
This stored image data is printed starting at the printing start position,
in the order of last-stored data to the first-stored data.
in the order of last-stored data to the first-stored data.
In other words, the front edge image loss of the image can be adjusted
by changing the document read end position.
by changing the document read end position.
(Adjustment procedure)
1) Preparing test chart (Draw a scale at the rear end of one side of a
sheet of A4 white paper or letter paper)
2) Set the test chart so that the scale is positioned as shown below, in
the S-D mode and the D-S mode.
3) Execute test command 50-18.
Select the SPF memory reverse output position, and press
[START] key to make a copy.
[START] key to make a copy.
Adjust the setting so that the front edge image loss is less than 4.0
mm in the R-SPF mode.
An increase of 1 in setting represents an increase of 0.1 mm in
image loss.
mm in the R-SPF mode.
An increase of 1 in setting represents an increase of 0.1 mm in
image loss.
B. Adjusting trailing edge void in duplex copy mode
This is the adjustment of the first surface printing mode (rear end void)
in duplex copying.
in duplex copying.
In a duplex copying operation, the paper is delivered starting from the
rear end of the first printing surface. It is therefore necessary to make a
void area at the rear end on the first printing surface to prevent paper
jam at the fusing part.
rear end of the first printing surface. It is therefore necessary to make a
void area at the rear end on the first printing surface to prevent paper
jam at the fusing part.
There are two adjustment modes:
1) Image cut rear end void quantity (R-SPF) 50-19 (SCAN mode
lamp)
The size (length) of a document read from the R-SPF is detected,
the image at the trailing edge of the first printing surface is cut to
make a void area. (The adjustment of void quantity at the time
when the cassette paper size is not recognized.)
The size (length) of a document read from the R-SPF is detected,
the image at the trailing edge of the first printing surface is cut to
make a void area. (The adjustment of void quantity at the time
when the cassette paper size is not recognized.)
2) Paper trailing edge void quantity 50-19 (PRINT mode lamp)
This adjustment is made when the cassette paper size is
recognized. The trailing edge void quantity can be adjusted by
changing the trailing edge image laser OFF timing.
recognized. The trailing edge void quantity can be adjusted by
changing the trailing edge image laser OFF timing.
The paper void quantity should be first adjusted before the image cut
trailing edge void quantity (R-SPF) is adjusted.
trailing edge void quantity (R-SPF) is adjusted.
The adjustment modes can be selected by pressing [
←
/
→
] key.
(Adjustment range; 1 – 99)
Enter the adjustment value and press [START] key to save the set
value and make a copy. (The paper information is cleared for every
copy.)
value and make a copy. (The paper information is cleared for every
copy.)
When the set value is increased by 1, the void amount is increased by
about 0.1mm.
about 0.1mm.
* The initial value of duplex setting is 2to2.
(Adjustment procedure)
(1) Paper trailing edge void quantity
1) Preparing test chart (Draw a scale at the rear end of one side of a
sheet of A/4 white paper or letter paper)
2) Set the test chart on the document glass as shown below.
Mode
Display
item
Default
LED
OC memory reverse
output position
output position
OC
50
COPY mode lamp
SPF memory reverse
output position
output position
SPF
50
PRINT mode lamp
5 10
Scale (S-D mode)
Scale (D-S mode)
5 10
The front edge of the
scale on test chart
scale on test chart
Front edge of paper
Void area
less than 4 mm
Mode
Display
item
Default
LED
Paper rear edge void
amount
amount
DEN-B
50
PRINT mode lamp
Print start position (Duplex
back surface)
back surface)
RRC-D
50
SCAN mode lamp
2nd printing surface where scale is printed (lower side)
Document guide
The trailing edge has a scale
Table glass
AR-SP8/RP8 ADJUSTMENTS 5 - 3
3) Execute test command 50-19 to turn on the PRINT mode lamp and
make the printing mode in OC-D mode.
Make a copy of the test chart to check the void area of the scale on
the image.
Make a copy of the test chart to check the void area of the scale on
the image.
Adjust the setting so that the void area is 4 - 5 mm. An increase in 1 of
setting represents 0.1 mm in void area.
setting represents 0.1 mm in void area.
(2) Image cut trailing edge void quantity (R-SPF)
1) Set the test chart so that the scale is positioned as shown below.
2) Execute test command 50-19 to turn on the SCAN mode lamp(on
the operation panel) and make the printing mode in the D-D mode.
3) Remove and reinsert the cassette.
Note: Make sure to carry out this step before making a copy during
this adjustment.
4) Make a copy and check the void area of the scale on the image.
Adjust the setting so that the void area is 2 - 4 mm. An increase of
1 in setting represents an increase of 0.1 mm in void area.
l Void position to be checked
1 in setting represents an increase of 0.1 mm in void area.
l Void position to be checked
The trailing edge void on the first printing surface
is shown above.
is shown above.
Paper
Void position to be check
Scale (D-D mode)
AR-SP8/RP8 TEST COMMAND 6 - 1
[6] TEST COMMAND
1. Entering the test command mode
To enter the serviceman test command mode, press the keys as
follows:
follows:
[#] key
→
[*] key
→
[C] key
→
[*] key
To cancel the test command mode, press the [CA] key.
2. Key rule
3. List of test commands
4. Descriptions of various test commands
[10KEY]:
Entry of MAIN CODE/SUB CODE
Selection of an item
Setup of an adjustment value in case of test commands for adjustment
Selection of an item
Setup of an adjustment value in case of test commands for adjustment
[
←
/
→
]:
Selection of MAIN CODE/SUB CODE
Selection of an item
Selection of an item
[OK/START]:
Settlement
<In case of test commands for print>
[OK]:
<In case of test commands for print>
[OK]:
Settlement (Without print)
[START]: Settlement/Print
[C]:
(Interrupting operation check) Returns to the upper hierarchy.
In case of test command of operation check, terminates the operations.
In case of test command of operation check, terminates the operations.
[CA]:
Exits from the test command mode.
For a test command of adjustment, the display returns to the initial display (00-00).
For a test command of adjustment, the display returns to the initial display (00-00).
Main
code
code
Sub
code
Contents
2
01
Single Paper Feeder (SPF) aging (SPF AGING)
02
SPF sensor status display (SPF SENSOR)
03
SPF motor operation check (SPF MOTOR CHK)
06
RSPF resist clutch operation check (RSPF RES.CHK)
08
SPF paper feed solenoid operation check (SPF SPUS
CHK)
CHK)
09
RSPF reverse solenoid operation check (RSPF SPFS
CHK)
CHK)
10
RSPF paper exit gate solenoid operation check
(RSPF SGS CHK)
(RSPF SGS CHK)
9
01
Duplex motor normal rotation check (DPLX ROT.)
02
Duplex motor reverse rotation check (DPLX
ROT.REV.)
ROT.REV.)
04
Duplex motor rotating speed adjustment (DPLX
ROT.SPEED)
ROT.SPEED)
22
08
SPF counter display (SPF CNT)
16
Duplex counter display (DPLX CNT)
22
SPF JAM counter display (S JAM CNT)
Main
code
code
Sub
code
Contents
24
04
SPF counter clear (SPF CLR.)
14
SPF JAM total counter clear (S JAM TTL CLR.)
26
02
(R)SPF setting (SPF/RSPF)
04
Main unit duplex setting (DPLX)
41
06
OC cover float detection level (OC FLOAT LEVEL)
43
05
Fusing temperature setting in duplex copy (FU TEMP
DPLX) (Enabled when Duplex setting is ON)
DPLX) (Enabled when Duplex setting is ON)
46
20
SPF exposure correction (EXP.LEVEL SPF)
48
05
SPF/RSPF mode sub scan direction magnification
ratio in copying (SPF/RSPF MAG.)
ratio in copying (SPF/RSPF MAG.)
50
18
Memory reverse position adjustment in duplex copy
(DPLX REVERSE)
(DPLX REVERSE)
19
Duplex copy rear edge void adjustment (DPLX END
EDGE)
EDGE)
53
08
SPF scan position automatic adjustment (SPF AUTO)
Main
code
code
Sub
code
Contents
Details of function/operation
2
01
Single Paper Feeder (SPF)
aging (SPF AGING)
aging (SPF AGING)
[Function]
When [OK/START] key is pressed, the set magnification ratio is acquired and single-face document
transport is performed in the case of SPF or duplex document transport in the case of R-SPF.
When [OK/START] key is pressed, the set magnification ratio is acquired and single-face document
transport is performed in the case of SPF or duplex document transport in the case of R-SPF.
However, the operating conditions don't matter and the operation is not stopped even in case of a
jam. Also the magnification ratio is displayed on the LCD.
jam. Also the magnification ratio is displayed on the LCD.
[Operation]
The operation is similar to test command 1-01.
The operation is similar to test command 1-01.
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