Alpha Technologies APP 9022S - Manual (Page 18)

3. Trouble-Shooting
016-537-B0-001 Rev. A
18
© 2002 TM
3.1Trouble-Shooting Guide
The trouble-shooting guide is designed to display typical symptoms, causes and
solutions, starting with the most obvious and working systematically through the unit.
Alpha Technologies recommends that the power supply maintenance log accompany
units brought in for bench service to aid the technician in trouble-shooting the
problem.
Symptom #2:
No output to cable; AC line power available; Green “Output Power” indicator ON;
And Ammeter reads "0":
Probable Cause:
AC output breaker has tripped
SPI "ALT/ON" switch in wrong position
"Jones" connector loose or not
connected to SPI
Loose seizure screw inside SPI
Solution:
Reset output breaker
Move switch to "ALT" position
Check connection
Tighten screw
Symptom #1:
No output to cable; No AC line power; Green Output Power indicator OFF:
Probable Cause:
AC line cord unplugged
AC input circuit breaker tripped (or
input fuse open)
Utility power outage
Solution:
Plug in AC line cord
Reset AC circuit breaker
Use voltmeter to verify correct voltage
(120/240 VAC) at receptacle. Connect
generator in the event of an extended
power outage.