Toshiba e-STUDIO556 Service Manual page 437

6.6 Image Quality Adjustment (Scanning Function)
6.6.1 Gamma balance adjustment
The density is adjusted by adjusting the gamma balance. The adjustment is performed by selecting its
density area from the following: low density, medium density and high density.
Black
Original mode
Text/ User
Photo
Photo Custom
7485-0 7487-0 7480-0
7485-1 7487-1 7480-1
7485-2 7487-2 7480-2
Note:
Changing the adjustment setting influences the adjacent density area slightly.
E.g.: When the value of the medium density is larger, the adjacent areas in the low density and
high density range will become slightly darker.
<Procedure>
(1) While pressing [0] and [5] simultaneously, turn the power ON.
(2) Key in the codes to be adjusted and press the [START] button.
(3) Key in the value corresponding to the density area to be adjusted (0, 1 or 2) and press the
[START] button.
0: Low density (L) 1: Medium density (M) 2: High density (H)
(4) Key in the adjustment value. (To correct the value once keyed in, press [C] button.)
(5) Press the [OK] or [INTERRUPT] button to store the value in memory. ¨ The equipment goes back
to the ready state.
(6) For resetting the value, repeat step (2) to (5).
(7) Turn the power OFF and then back ON. Then perform scanning.
(8) If the image density has not been attained, repeat step (2) to (7).
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Gray Item to be
scale adjusted
7488-0 Low density
7488-1 Medium density
7488-2 High density
6 - 33
< Adjustment Mode (05) >
Remarks
The larger the value is, the density of the
item to be adjusted becomes darker.
Acceptable values:0 to 255.
(Default: 128)
e-STUDIO556/656/756/856/557/657/757/857
6
ADJUSTMENT