Canon TX-20 Full Auto Tonometer 手册

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Adjust the LCD brightness in this screen. 

4

5

3

1

2

1 

Brightness gauge 

Shows the current brightness of the LCD. The left 
side is 1 and the right side is 100. 

2 

Brightness value 

Shows the current brightness. Specify a value from 
1 to 100. 

3 

OK key 

Switches to the MENU screen. 

4 

Brightness down key 

Reduce the brightness. 

5 

Brightness up key 

Increase the brightness. 

L-IE-5191C_TX-20.indb   35

2013/07/18   13:10:24