Furuno DD-80 - Manual (Page 71)

9 – 5
Display test
1) Press [MENU ESC] [8] and [3] to dis-
play the test pattern screens.
2) To change the test pattern, press the [NU/
CU ENT] key. Each time the key is
pressed one of the patterns shown in Fig-
ure 9-12 appears.
TEST PATTERN
ENT:Pattern MENU:Escape
Figure 9-12 Test patterns 1 and 2
3) To quit the test pattern, press the [CLEAR]
key three times. Control is returned to the
SELF TESTS menu.
4) Press the [MENU ESC] key.
Automatic testing
This feature conducts all self tests continu-
ously.
1) Press [MENU ESC] [8] and [4]. Self tests
are conducted continuously in the order
of memory, I/O test, keyboard test and test
pattern.
2) To stop testing, press the [MENU ESC]
key.
3) Press the [MENU ESC] key.