Fujitsu AUXB04GALH Service Manual page 166

Network Convertor (UTY-VGGXZ1)
Trouble shooting 88
Error Contents :
Software Error
Details :
Condition of occurrence : Micon program performed an abnormal control.
Release condition : Micon has been reset, and the control of Network Convertor became normal.
When error disappeared and Network Convetor becomes available to control.
Cause 1 : External noise
Check continuation of error.
(1) If error is released automatically, it is not a defect of PCB. Remove the surrounding noise source around Network Convertor.
(2) If error is not released automatically, check followings.
OK
After pressing SW104 of Network Convertor PCB for 5 seconds or turning on power.
Does error code display reappear?
Y E S
Remove the surrounding noise source.
OK
Cause 2 : Network Convertor is defective.
Replace Network Convertor.
-
Symptom :
Error Code display [ C A ]
All the control items do not operate.
Other Controls are left they are.
Error of inside information of EEPROM.
initial setting of Network Converor PCB was not normally performed.
N O
It is not a defect of PCB. Remove the surrounding noise source.
04-96