Alpha Technologies APP60S Operator's Manual - Page 13

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4. TROUBLE-SHOOTING AND REPAIR

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 Technolo-
gies recommends that the power supply's maintenance log accompany units brought in for
bench service to aid the technician in trouble-shooting the problem.
4.1
On units returned to Alpha Technologies for repair, a Return Material Authorization (RMA)
should first be obtained from Alpha's Customer Service Department. The RMA should be
clearly marked on the unit's original shipping container. If the original container is no longer
available, the unit should be packed with at least 3 inches of shock-absorbent material. Note:
Do not use popcorn type packing material. Returns should be prepaid and insured (COD and
freight collect can not be accepted without prior approval). Note: It is recommended that any
information pertaining to the nature of the power supply failure or problem, along with a copy
of power supply's maintenance log, be included with the returned unit.
4.2
When ordering parts from Alpha Technologies, contact the Customer Service Department
directly at (206) 647-2360; or (604) 430-1476 (Canada and International).
4.3
SYMPTOM
No output to cable;
No AC line power;
Green "AC LINE" indicator OFF:
SYMPTOM
No output to cable;
AC line power available;
Green "AC LINE" indicator ON;
and/or ammeter reads "0":
SYMPTOM
Incorrect output voltage;
and/or ammeter reads excessive
current (above rated output of
APP60S):
016-001-B0-002 6/97
TROUBLE-SHOOTING AND REPAIR

Repair Instructions

Parts Ordering Instructions

TROUBLE-SHOOTING GUIDE

PROBABLE CAUSE
AC Line cord unplugged.
AC input circuit breaker
tripped (or input fuse open).
Utility power outage.
PROBABLE CAUSE
AC output fuse open.
SPI "ALT/ON" switch
in wrong position.
"Jones" connector loose or
not connected to SPI.
Loose seizure screw inside SPI.
PROBABLE CAUSE
30 / 60 VAC switch in
wrong position.
Wrong type of voltmeter used.
Under-loaded output
(less than 1 Amp).
Over-loaded output.
Short exists in load.
MOV shorted in SPI.
8
REMEDY
Plug in AC Line cord.
Reset AC circuit breaker
(or replace 12 A fuse).
Use voltmeter to verify
120 VAC at receptacle.
Connect generator if
extended power outage.
REMEDY
Replace 15 A fuse.
Move switch to
"ALT" position.
Check connection.
Tighten screw.
REMEDY
Move switch to
required position.
Use true RMS meter.
Connect load.
Reduce load.
Locate and remove short.
Replace SPI.