5-13 
5.3.1.1  Adjusting the Contrast 
 
Select   CONTRAST  to adjust the contrast. Press the           keys to adjust the contrast, and 
press the            key to set the adjustment. 
 
 
 
 
 
The lowest contrast is 1, and the highest is 13. 
The default is 7. 
 
 
5.3.1.2 Brightness Settings (DIMMER) 
 
The brightness can be set to bright, medium, dark, and off by pressing the                key. From this menu, 
you can set the values for each of these brightness levels. 
 
Select   MAXIMUM  ( TYPICAL ,  MINIMUM ), and press the      key to move the cursor to the 
right. 
 
Pressing the         keys increments or decrements the value by one, and the screen brightness 
changes accordingly. Press the     key to set the selection. (TYPICAL and MINIMUM values can be 
set in the same way) 
 
 
 
 
 
 
 
 
 
 
•  Set the largest value for MAXIMUM, and the smallest value for MINIMUM. 
•  The maximum/minimum level adjustable by key-brightness are the ones set here DIMMER 
settings. 
 
 
5.3.1.3  Click Sound Settings (CLICK SOUND) 
 
Select   CLICK SOUND   to turn on or off the key click sound. 
 
Pressing the          keys cycles the buzzer on and off. Press the     key to confirm the 
selection. 
 
 
 
 
 
 
 
 
The alarm buzzer cannot be deactivated. 
Memo 
Memo 
ON: Buzzer on 
OFF: Buzzer off