Furuno FM-8800D manual Error Message, Parts Location, ANT Error, GPS Error

6. MAINTENANCE & TROUBLESHOOTING

6.4Error Message

The table below shows all the error messages which may appear.

Error message	Meaning
PLL1 Unlock	PLL circuit on the TX/RX pcb 05P0774 has unlocked.
PLL2 Unlock	PLL circuit on the DUP RX pcb 05P0777 has unlocked (only
	FM-8800D).
ANT ERROR	The antenna is abnormal. In this condition, if the
	transmission continues more than five seconds, the output
	power is reduced to approximately 10W.
GPS ERROR	There is no L/L input from a positioning sensor for more than
	one minute.
System Error	The DSP (digital signal processor) is abnormally.
Printer PE	Printer is disconnected or paper runs out.

Note: If the CPU is abnormal, the beep sounds continuously until turning off the power.

6.5Parts Location

Transceiver unit FM-8800D/8800S

PWR pcb	TX/RX pcb
05P0776	05P0774
DUPLEXER

FM-8800DFM-8800S

Top cover removed

PANEL pcb 05P0772

DUP RX pcb 05P0777

CH70 RX pcb

05P0775 CPU pcb

05P0773

FM-8800S/D

Bottom cover removed

6-3