Read Sharp AR-M550 (serv.man14) Service Manual online
AR-M550/M620 SETTING AND ADJUSTMENTS 7 - 38
3) Enter the number that corresponds to the following adjustment
item using the numeric keypad. (Choose from numbers 0 to 5.)
• Auto mode
• Manual mode (print density adjustment level)
For manual mode, select the number that corresponds to the
image density adjustment level (1 to 5). (Choose from numbers 1
to 5.)
image density adjustment level (1 to 5). (Choose from numbers 1
to 5.)
6) Press the Start key
7) Enter the image density adjustment value.
8) Press the P or Start key
Scanned images must be visually checked to ensure the post-adjust-
ment image density.
ment image density.
1) Go through the modes specified in Simulation 46-27.
2) Using the numeric keypad, select the number that corresponds to
the scan mode for which to make adjustments.
4) Press the Start key
5) Adjust the gamma by entering an appropriate value through the
numeric keypad.
A larger value provides larger gamma gradient and higher image
contrast.
contrast.
6) Press the Start key
This applies the adjustment value.
Scanned images must be visually checked to ensure the post-adjust-
ment image gamma.
ment image gamma.
(Common image quality adjustment items for all of copy, scan,
and fax modes)
and fax modes)
This adjustment is needed in the following situations:
• The CCD unit has been replaced.
• U2 trouble has occurred.
• The MFP control PWB has been replaced.
• The EEPROM on the MFP control PWB has been replaced.
• The scanner control PWB has been replaced.
• The EEPROM on the scanner control PWB has been replaced.
• One or more parts of the scanner (reading) section have been
replaced.
• The CIS unit has been removed.
• The CIS unit has been replaced.
• The SPF unit has been removed.
• The SPF unit has been replaced.
1) Go through the modes specified in Simulation 46-20.
Select other than 0 - 5, and
press [START] key.
press [START] key.
Press [START] key, or press
[CUSTOM SETTINGS] key.
[CUSTOM SETTINGS] key.
Item
Set
range
Default
0
AUTO
Auto
0 - 99
50
1
1.0
Exposure level 1
2
2.0
Exposure level 2
3
3.0
Exposure level 3
4
4.0
Exposure level 4
5
5.0
Exposure level 5
ADJ 11F
Adjust the image gamma in scanner
mode
mode
Item
1
OC_Fine.HT
Fine text (Half-tone) (OC)
2
OC_SFine.HT
Super fine (Half-tone) (OC)
3
OC_UFine.HT
Ultra fine (Half-tone) (OC)
4
SPF_Fine.HT
Fine text (Half-tone) (SPF)
5
SPF_SFine.HT
Super fine (Half-tone) (SPF)
6
SPF_UFine.HT
Ultra fine (Half-tone) (SPF)
7
CIS_Fine.HT
Fine text (Half-tone) (CIS)
8
CIS_SFine.HT
Super fine (Half-tone) (CIS)
9
CIS_UFine.HT
Ultra fine (Half-tone) (CIS)
1
SIMULATION 46-22
EXP.LEVEL SETUP SCANNER(NORMAL). SELECT 0-5, AND PRESS
START.
0.AUTO
50
1.1.0
50
2.2.0
50
3.3.0
50
4.4.0
50
5.5.0
50
50
SIMULATION 46-22
EXP.LEVEL SETUP SCANNER(NORMAL), INPUT VALUE 0-99, AND
PRESS START.
0.AUTO
SIMULATION 46-27
GAMMA SETUP(SCNNER), SELECT 1-9, AND PRESS START.
1.OC_Fine.HT
64
2.OC_SFine.HT
64
3.OC_UFine.HT
64
4.SPF_Fine.HT
64
5.SPF_SFine.HT
64
6.SPF_UFine.HT
64
7.CIS_Fine.HT
64
8.CIS_SFine.HT
64
9.CIS_UFine.HT
64
ADJ 12
Common image quality
adjustments for all of copy, scan,
and fax modes
adjustments for all of copy, scan,
and fax modes
Adjustment items
Simulation for adjustment
Original table mode/SPF mode image
density correction
density correction
46-20
(Auto mode operation spec setting for
copy, scan, and fax)
copy, scan, and fax)
46-19
ADJ 12A
Correct the image density in original
table mode/SPF mode
table mode/SPF mode
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