AR-151 (serv.man3). AR151 156-Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 99

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14

FAX density adjustment (Fine mode)
Used to set the denisty set value in the small character mode individually.
(Operating procedure)
Same as the FAX density overall adjustment.
Since, however, the small character mode has the Text document mode and the Photo document mode,
changeover can be made with the copy mode select key and the set value of the selected mode is displayed on
the copy quantity display. The copy mode setup is made as shown below.

15

FAX density adjustment (Super Fine mode)
Used to set the density set value in the fine mode individually.
(Operating procedure)
Same as the FAX density overall adjustment.

19

γ

 table setup

When this simulation is executed, the currently set gamma table code number is displayed. Enter the code
number corresponding to your desired gamma table and press the PRINT switch, and the setup will be changed.

48

01

Front/rear scan direction
(Outline)

(1) Front/rear scanning direction magnification ratio auto correction: (Performed by changing the set value of

ZOOM DATA register for asic.) The width of the reference line marked on the shading correction plate is
scanned to perform the front/rear direction magnification ratio adjustment automatically. (Performed by
changing the set value of ZOOM DATA register for ASIC.)

(2) Front/rear scanning direction magnification ratio manual correction: Used to set the front/rear (main scanning)

direction magnification ratio by key operations. (Performed by changing the set value of ZOOM DATA
register for ASIC.)

(3) Scanning direction magnification ratio correction: The scanning direction magnification ratio in the OC mode is

set by key operations. (Performed by changing the scanning speed.)

(4) SPF mode scanning direction magnification ratio correction: The scanning direction magnification ratio in the

OC mode is set by key operations. (Performed by changing the scanning speed.)

(Operation/Procedure)
1.  When this simulation is executed, the current set value is displayed in two digits. (Center value: 50)

2.  When the copy mode select key is pressed, the setting mode and the setting display are changed

sequentially.

∗

 The selected adjustment mode is indicated by the lamps as follows:

3.  In the front/rear scanning direction adjustment, when the START key is pressed, the mirror base unit moves

to the white plate for shading and the width of the reference line is read and the correction value is
calculated and displayed and the value is stored.
In the case of the manual adjustment, enter the adjustment value with the 10-key and press the START key.
Then the entered value is stored and a copy is made. (An increase of 1 in the set value corresponds to an
increase of 0.1mm.)

4.  Press the clear key to store the set value and exit the simulation.

In the front-rear direction magnification ratio correction:

(1)  The result of calculation of the scan correction value is 

±

5% or less, “- -” is displayed.

(Cause) The white plate reference position error or the lens unit installing error

(2)  In case of a scanning error of the reference line, the JAM lamp is turned on.

(Cause) CCD error or no white plate

∗

) If the automatic correction of magnification ratio does not work properly, adjust and correct manually.

Mode

Display lamp

Text document mode

AE mode lamp

Photo document mode

Photo mode lamp

Code number

γ

 table

1

Japan

2

EX Japan

Adjustment mode

Lamps ON

Front/rear direction magnification ratio auto correction

AE lamp

Front/rear direction magnification ratio manual correction

TEXT lamp

Scanning direction magnification ratio correction

PHOTO lamp

SPF mode scanning direction magnification ratio correction

AE, TEXT, PHOTO lamps

AR-F152

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