Fujitsu AUXB04GALH Service Manual page 162

Network Convertor (UTY-VGGXZ1)
Trouble shooting 84
Error Contents :
Main PCB Error
Details :
Condition of occurrence : Synchronization of Network Device was not normally done.
Release condition : When the synchronization of the device is normally done.
Cause 1 : External noise
After pressing SW104 of Network Convertor PCB for 5 seconds or turning on power.
Does error code display reappear?
YES
Remove the surrounding noise source.
OK
Cause 2 : Network Convertor is defective.
Replace Network Convertor.
-
Symptom :
Error Code display [ C 1 ]
All the control items do not operate.
NO
It is not a defect of PCB. Remove the surrounding noise source.
04-92