Casio CSF-4450, Service Manual & Parts Manual

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AAA-size 
batteries

Main battery holder

RESET

Adjusting the Display Contrast

The following procedure describes how to adjust the color contrast, which controls the relative darkness
and lightness of each color on the display.

To adjust the display contrast

1. While the desktop is on the display, press FUNC.
2. Press 1 to select 

SYSTEM.

3. Press 

 to display the second 

SYSTEM menu.

4. Press 1 to select 

CONTRAST.

5. Use 

 and 

 to move the pointer to the color whose contrast you want to set.

6. Use 

 and 

 to adjust the contrast of the currently selected color.

• You can adjust the overall contrast of the display by pressing   or   .
• Whenever you press one of the COLOR SELECT keys, the color contrast is returned to its initial

default setting.

7. After you finish adjusting the display contrast, press OK.

• Color contrast settings are registered as soon as you make them. Because of this, pressing either

OK or ESC quits the color contrast procedure only. Pressing ESC does not return the color contrast
setting to what is was.

Notes

• Temperature changes can cause changes in background color and the tint of display colors .
• Low battery power can also cause flickering of the display and changes in the tint of display colors.

BATTERY REPLACEMENT

Main Battery

Before replacing the main batteries, note the following precautions:

• Do not remove the main batteries from the CSF Unit while back-up battery is removed.
• Be sure to replace both batteries at the same time, and do not use an old battery with a new one.

1. Press OFF to switch power OFF.
2. Press down at the two locations indicated by    , and slide in the direction indicated by the arrow.

Pointer (currently
selected color)

∇

<O         B         G>

(ORG)

(BLU)

(GRN)