Address Setting Error; Parallel Communication - Fujitsu Airstage V-II Service Manual

Trouble shooting 75
Error Contents :

Address Setting Error

Details :
Condition of occurrence : Address is not set at Signal Amplifier.
Release condition : Address setting mode is started up, and desired address has been set up.
Cause 1 : External noise
Upon pressing RESET button (SW7) or turning on
power, proceed as follows.
(1) If error did not appear, it is not a defect of PCB.
Remove the surrounding noise source.
(2) If error occurs again, check followings other than
removing surrounding noise source.
Trouble shooting 76
Error Contents :

Parallel Communication

Details :
Condition of occurrence : Communication error between CPU and Network Driver IC
Release condition : Communication is normal between CPU and Network Driver IC
Cause 1 : External noise
Upon pressing RESET button (SW7) or turning on power,
proceed as follows.
(1) If error did not appear, it is not a defect of PCB. Remove the
surrounding noise source.
(2) If error occurs again, check followings other than removing
surrounding noise source.
Symptom :
Error display [ 2 6 ]
No operation.
Cause 2 : Address is not set at Signal Amplifier.
Set up address again.
After set up again, reset the power supply.
Cause 3 : Signal Amplifier is defective.
Replace Signal Amplifier.
OK
Symptom :
Error display [ C 1 ]
No operation.
OK
Cause 2 : Signal Amplifier is defective.
Replace Signal Amplifier.
04-78
OK