Furuno FM-8700 Operator's Manual page 83

(from previous page)
Press [ENT] to view results of test.
This area shows test results:
OK for normal operation; NG
(No Good) for error.
Check end: [CANCEL] key
To escape, press the [CANCEL] key.
If NG appears, have a technician replace corresponding PCB.
NG display and PCB error
TRANSMIT POWER: NG
= P.A. of transmission section
TX PCB error
TX PCB: NG
= TX PCB error
CONTROL PCB: NG
= MODEM(U29) Control PCB error
or
CH70 Rx PCB: NG
= CH70 RX PCB error
RX PCB: NG
= RX PCB error
DUPLEXER PCB: NG
= DUPLEXER PCB error
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