Sharp AR-651 (serv.man4) Service Manual ▷ View online
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AR-651/810 ADJUSTMENT
100%
100%
A3
A
XXX
ZZZ
YYY
100%
A3
A
100%
A3
A
100%
A3
A
A3
1
3. 4. Image Quality Adjustment
3. 4. 1. Image density for copier
Perform the image density adjustment in the adjustment mode “05” if the user requests to change the
image density.
Original mode
Items to adjust
Remarks
Text/Photo Photo Text
503
501
504 Manual density center value The larger the value, the darker the image becomes
Code
505
506
507 Manual density light step value
The larger the value, the lighter the image of the lighter steps become
508
509
510 Manual density dark step value The larger the value, the darker the image of the darker steps become
514
512
515 Automatic density
The larger the value, the darker the image becomes
Adjust the image density by taking the following procedure while studying the image obtained from the test
copy and the currently entered values.
<Keys used in the operation>
<Display>
Notes: 1. Only one single-sided copy can be made.
2. Since the duplex copying is disabled, make a test copy after
exiting the adjustment mode.
Varies depending on the code “xxx”
entered with the digital keys.
entered with the digital keys.
Newly entered
adjustment value
(YYY is the default
display).
adjustment value
(YYY is the default
display).
Current adjustment value
[0] [5]
[POWER]
Code No.
[Digital keys]: Enter the code.
[START]
Return to
쩸
to make
the adjustment again
TEST MODE
TEST MODE
TEST MODE
WAIT WARMING UP
COPYING
[SET]
or
[INTERRUPT]
: Value “ZZZ” is newly stored in
BC-RAM instead of “YYY”.
[POWER ]OFF/ON: To exit the adjust-
ment mode
[ENERGY SAVER]: Test copy
[CLEAR]
Corrects the
values
[Digital keys]: Enter the adjust-
ment value.
AR-651/810 ADJUSTMENT
3 - 20
Original mode
Items to adjust
Remarks
Text/Photo
Photo
Text
Code
620
621
622
Sharpness setting
Enter one of the following values in the original mode.
Units:
1: Text/Photo 2: Photo
5: Text
Tens:
0: Use default value
1~9: Change intensity
(The larger the value, the sharper the
image becomes.)
• Example of value entry in case the
original mode is “Text/Photo”.
2
1
Fixed value for Text/Photo mode
Enter a value 0 to 9
Note: When the value “0” is entered in
the tens digit, the value is not
displayed on the LCD screen.
3. 4. 2. Sharpness adjustment for copier
When making the image sharpness softer or harder, adjust the sharpness setting in the adjustment mode
“05”.
The entry procedure of the adjustment value is the same as that for “3.4.1 Image density”.
3. 4. 3. Gamma slope adjustment for copier
If the user requests to change the gamma slope, perform the gamma slope adjustment in the adjustment
mode “05”.
The entry procedure of the adjustment value is the same as that for “3.4.1 Image density”.
Original mode
Items to adjust
Remarks
Text/Photo
Photo
Text
Code
593
594
595
Gamma slope adjustment
0: Use default value (equivalent to the
set value 5)
1 to 9: Gamma data (The larger the value,
the darker the image becomes)
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AR-651/810 ADJUSTMENT
Original mode
Items to set
Remarks
Text/Photo
Photo
Text
Code
570
571
572
Range correction for
original manually set
on the original glass
693
694
695
Range correction
for original set on
the RADF
The following are the default values set for each
original mode.
Text/Photo: 12, Photo: 12, Text: 44
Units:Setting for the automatic density mode
Tens: Setting for the manual density mode
1: Value of the background peak - fixed
Value of the text peak - fixed
2: Value of the background peak
- varies depending on image data to be copied.
Value of the text peak - fixed
3: Value of the background peak - fixed
Value of the text peak
- varies depending on image data to be copied.
4: Value of the background peak
- varies depending on image data to be copied.
Value of the text peak
- varies depending on image data to be copied.
3. 4. 4. Setting for range correction for copier
The range correction on the values of the background peak/text peak can be set in the adjustment mode
(05).
If they are fixed, the range correction is performed with standard values.
The values of the background peak and text peak affect the reproduction of the background density and
text density respectively.
The entry procedure of the adjustment value is the same as that for “3.4.1 Image density”.
3. 4. 5. Adjustment of background peak for range correction for copier
The level of the background peak for the range correction is set at the following codes in the adjustment
mode (05).
The entry procedure of the adjustment value is the same as that for “3.4.1 Image density”.
Original mode
Items to set
Remarks
Text/Photo
Photo
Text
Code
532
533
534
Back ground peak
for range correction
When the value is increased, the background (low
density section) of the image becomes not to be output.
AR-651/810 ADJUSTMENT
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3. 4. 7. Adjustment of Image density for printer
The level of the image density is set at the following codes in the adjustment mode (05).
Mode
Item to set
Remarks
Standard
Toner save
672-0~4
676-0~4
Adjustment of image
The image density level at the printer mode is set.
673-0~4
677-0~4
density
When the value is decreased, text becomes
lighter.
Notes:
1. Set not to reverse the large and small number
of the setting value corresponding to the sub
code.
Ex.) When substituting the setting value for
672-0 with A
0
, · · ·, 672-4 with A
4
:
A
0
=
< A
1
=
< A
2
=
< A
3
=
< A
4
2. Input the same value for the code 672/673 and
code 676/677.
3. Remember that the image specifications and
life span of the replacing parts may not meet
the standard when the setting value is
changed from the default value.
Code
3. 4. 6. Adjustment of blurred/thin spotted text
The blurred/thin spotted text can be adjusted at the following codes in the adjustment mode (05).
The entry procedure of the adjustment value is the same as that for “3.4.1 Image density”.
Function / Mode
Copier
Printer
Printer
Items to set
Remarks
Text/Photo Smoothing Toner Save
648
657
658
Adjustment of
05-648: When the value is increased, the thin spotted
blurred/thin spotted text is improved, and when it is decreased, the blurred
text
text is improved.
05-657, 658: When the value is increased, the blurred
text is improved, and when it is decreased, the thin
spotted text is improved.
Note: Remember that the image specifications and life
span of the replacing parts may not meet the
standard when the setting value is changed from
the default value.
Code
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