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

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Furuno manual Error Message, Parts Location, ANT Error, GPS Error, Transceiver unit FM-8800D/8800S