AR-M700 (serv.man26). Setting and adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 38

: Feb. 9 2004

AR-M550/M620/M700  SETTING AND ADJUSTMENTS  7 - 38

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.

6) Press the Start key

This applies the adjustment value. 

Scanned images must be visually checked to ensure the post-adjust-
ment image gamma.

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.

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)

Adjustment items

Simulation for adjustment

Original table mode/SPF mode image 
density correction

46-20

(Auto mode operation spec setting for 
copy, scan, and fax)

46-19

Used to adjust the copy density correction in the SPF copy mode for
the document table copy mode. The adjustment is made so that the
copy density becomes the same as that of the document table copy
mode.

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

Item

Content

Set 

range

Default

0

TRAY SELECT

Paper feed tray selection
1: TRAY1
2: TRAY2
3: TRAY3
4: TRAY4
5: Manual feed
6: Side LCC

–

–

1

PRINT START

Print start (Default)

–

–

2

EXP LEVEL

Exposure level selection
3: Exposure level 1.0
4: Exposure level 1.5
5: Exposure level 2.0
6: Exposure level 2.5
7: Exposure level 3.0
8: Exposure level 3.5
9: Exposure level 4.0
10: Exposure level 4.5
11: Exposure level 5.0

–

–

3

SPF (FRONT)

SPF (front) (front frame side) 0 - 255

128

4

SPF (REAR)

SPF (front) (rear frame side)

5

DSPF

DSPF (Back surface) 

SIMULATION 46-20

1

Press [CUSTOM SETTINGS] key. 

SIMULATION 46-20

OC/SPF EXP. ADJUSTMENT. INPUT VALUE 0-255, AND PRESS

START.

1.SPF(FRONT)

128

Press [START] key. 

SIMULATION 46-20

OC/SPF EXP. ADJUSTMENT.  NOW PRINTING.

Press [CUSTOM SETTINGS] key, 
or terminate copying.

SIMULATION 46-20

OC/SPF EXP. ADJUSTMENT. SELECT 1-6, AND PRESS START.

(FEED TRAY)

  2.TRAY1  2.TRAY2  3.TRAY3  4.TRAY4

  5.BPT    6.LCC

Press [START] key or 
press [CUSTOM SETTINGS] key.

1

Select 0, and 
press [START] key.

Select 1, 
and press 
[START] key. 

SIMULATION 46-20

OC/SPF EXP. ADJUSTMENT. SELECT 3-8, AND PRESS START.
(EXP. LEVEL SELECT)
3.1.0     4.1.5     5.2.0
6.2.5     7.3.0     8.3.5
9.4.0     10.4.5    11.5.0

1

Press [START] key or 
press [CUSTOM SETTINGS] key.

Select 2, and 
press [START] key.

OC/SPF EXP. ADJUSTMENT. SELECT 1-4, AND PRESS START.
0.TRAY SELECT  

1

  1.PRINT START

2.EXP LEVEL    

1

3.SPF(FRONT) 

128

4.SPF(REAR)  

128

5.DSPF       

128

Select other than 0 - 2, and press [START] key.