Fujitsu AUXB04GALH Service Manual page 155

Signal Amplifier (UTY-VSGXZ1 )
Troub le shooting 77
Error Contents :
Power Supply Error
Details :
Condition of occurrence : Normal power is not supplied. 7 segme nt indicator is defective.
Release condition : Normal power is supplied. 7 segment indicator is normal.
Cause 1 :
Power supply cable installation is defective or open.
Check following installation and reset the power supply.
(1) Installation of power cable on power supply terminal.
(2) Connection between Power PCB and Terminal.
(3) Connector condition between power PCB and Main PCB.
Symptom :
No display
OK
Cause 2 : Signal Amplifier is defective.
If normal voltage (Rated Voltage) is applied to power supply
terminal of Signal Amplifier,
PCB. Proceed as follows.
Replace Signal Amplifier.
04-85
AC
there is a possibility of defective