Furuno FM-8500 Operator's Manual page 83

(from previous page)
Press [ENT] to view results of test.
Check end: [CANCEL] key
Press the [t] key. To escape, press the [CANCEL] key.
If NG appears, have a technician replace corresponding p.c. board.
NOTE:Do not open the equipment at any time. Electrical shock hazard exists
inside the equipment. Contact FURUNO agent or dealer for service.
TRANSMIT POWER : NG
= P.A. of transmission section
error or Antenna
TX PCB(PLL LOCK) : NG
= PLL(U5) error on the Tx PCB
CONTROL PCB : NG
= MODEM(U29) error on the Control PCB
or
CH70 Rx PCB: NG
= VHF RX/CH70 RX PCB error
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