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SETTING / ADJUSTMENT
4 - 7
4.2.4 Background adjustment
The density of the background can be adjusted as follows.
<Adjustment Mode (05)>
Make a test copy and compare the image obtained with the current settings; if necessary, make
adjustment using the following procedure.
<Procedure>
The procedure is the same as that of
 P. 4-5 "4.2.2 Density adjustment".
4.2.5 Judgment threshold for ACS (common for copy and scan)
Judgment levels for automatically identifying whether an original is color or black are adjusted. This
adjustment is for judgment levels when “Auto Color” is selected as a color mode. The same adjustment
value is simultaneously applied to all cases of originals on the original glass for copier functions and
network scanning functions, and those placed on the RADF.
<Adjustment Mode (05)>
Make a test copy and compare the image obtained with the current settings; if necessary and make
adjustment.
<Procedure>
(1) While pressing [0] and [5] simultaneously, turn the power ON.
(2) Key in a code and press the [START] button.
(3) Key in a sub-code and press the [START] button.
(4) Key in an adjustment value.
(To correct a value once keyed in, press the [CLEAR] button.)
(5) Press the [OK] or [INTERRUPT] button to store the value.

The equipment goes back to the
ready state.
(6) Turn the power OFF and back ON in the normal mode, and then make a copy.
(7) If the desired image quality has not been attained, repeat step (1) to (6).
Color
mode
Original mode
Remarks
Text/
Photo
Text Photo
Custom
mode
Black 7100 7101 7102 7106 The larger the value is,
the darker the
background becomes.
Acceptable values:
0 to 255 (Default: 128)
Code
Item to be
adjusted
Contents
7630 Judgment threshold
for ACS
The larger the value is, the more an original tends to be judged as black . The
smaller value is, the more it tends to be judged as color.
Acceptable values: 0 to 255 (Default: 70)