Furuno CH-270 SONAR User Manual


 
6. MAINTENANCE, TROUBLESHOOTING
6-8
6.9 Test Pattern
A test pattern can be displayed to check for proper display of colors.
1. Press the [MENU] key to open the menu.
2. Press to choose MENU, and then press to choose SYS.
3. Press to choose GO TO SYS MENU.
4. Press to choose YES.
5. Choose TEST PATTERN and then press to display the test pattern. Press again
to change the test pattern. The pattern changes in the sequence shown below with
each press of .
BLUE GREENBLACK
WHITE
RED
16 tones
of RED
16 tones
of GREEN
16 tones
of BLUE
Test pattern
To quit the test pattern, press the [MENU] key three times.