Furuno CI-68 - Manual (Page 55)

4. MAINTENANCE & TROUBLESHOOTING
4-7
4.4.3 Test pattern
The test pattern checks for proper display of colors.
1. Open the MENU 1 menu and choose PATTERN from TEST.
2. Press any function key to start the test.
Test Pattern Black Blue Green
16 tones of red 16 tones of green 16 tones of blue White Red
Test pattern
3. Press ► to change the picture in the sequence shown above. You may reverse the
order by pressing ◄.
Note:
You may adjust the brilliance of the FURUNO-supplied monitor by operating the
[BRILL] key.
4. To quit the test, press the [MENU] key to return to the MENU 1 menu.
5. Press the [MENU] key again to close the menu.