Furuno GP-1850WF User Manual Page 99

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  • TROUBLESHOOTING
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13. MAINTENANCE & TROUBLESHOOTING
13-5
Keyboard test
This test checks all controls for proper
operation.
1. Press the [MENU] followed by the
CONFIGURATION, SYSTEM MENU and
SELF TEST soft keys to display the
TEST menu.
2. Press the KEYBOARD TEST soft key to
display the screen for testing the
keyboard.
KEYBOAD
TEST
PRESS
"CLEAR" KEY
3 TIMES
TO RETURN.
Keyboard test
3. Press each key one by one. The pressed
key’s on-screen location turns black if the
key is functioning properly.
4. To escape, press the [CLEAR] key three
times.
Display test
1. Press the [MENU] key followed by the
CONFIGURATION, SYSTEM MENU and
SELF TEST soft keys to display the
TEST menu.
2. Press the TEST PATTERN soft key to
open the test pattern display.
3. Press the [ENTER] key to change the
test pattern.
TEST PATTERN
WHT GRN BLU BLK
WHT
RED
GRN
BLU
BLK
RED
PRESS "ENTER" TO CHANGE PATTERN
RETURN
Display test pattern
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