I 6.2.3 Back light adjustment 
Brightness 
of 
display can be adjusted in 41evels. 
The display is medium-intensity brightness 
at 
starting. 
To 
change the britness, press the 
IQIM 
key. 
Maximum-> 
Medium-> 
Minimum-> Tum 
off 
the 
light-> 
Maximum-> 
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2li:• 
[
Notes
1
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J The brightness becomes the brightest in the following case; 
-Failure 
alarm is occurred. ("NAVTEXALARM• screen appears.) 
-After 
reception 
of 
"Navigational warnings" message (Message type 
"/J\') 
-After 
reception 
of 
"Meteorological warnings• message (Message type "B")) 
-After 
reception 
of 
"Search and rescue information, and pirate attack warnings• (Message type 
"D•) 
-After 
reception 
of 
"Navigational warnings (Additional 
to 
letter 
"/J\')" 
message (Message type "L•) 
I 6.2.4 Contrast adjustment 
Contrast 
of 
view area can be adjusted in 13 levels. 
To 
change  the  contrast,  press  the  IPWRICONlj  key.  Contrast 
of 
View  area  is  changed  each  time  the 
IPWRICONlj key is pressed. 
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