Table of Contents
Advertisement
SECTION 4
MAINTENANCE
4.1 GENERAL
This section
provides troubleshooting and servicing information.
The troubleshooting
data
should be used in conjunction with the
schematic diagrams in section 5 and section 3 (which outlines the
theory of
operation).
Any questions pertaining to repair should
be directed
to Xantrex
Technology Inc.
Include
the model
and
serial numbers in any
correspondence.
Should it be necessary to
return a
supply for
repair, prior
authorization
from
Xantrex
Technology Inc. must be obtained.
4.2 PERIODIC SERVICING
Whenever a
unit is
removed from
service, it should be cleaned,
using naphtha
or an
equivalent solvent on metal surfaces, and a
weak solution
of
soap
and
warm
water
on
the
front
panel.
Compressed air
(at 5
psi) may
be used to blow dust from in and
around
components.
Refer
to
section
1.5
for
specification
verification.
4.3 TEST EQUIPMENT REQUIRED
a. Dual Trace Oscilloscope
b. 4 1/2 digit Digital Multimeter
c. True RMS Voltmeter
d. Variable Autotransformer, 500VA
e. lOOkHz Frequency Counter
4.4 TROUBLESHOOTING
Refer to sections 3 and 5 for circuit theory and diagrams. Refer
servicing to
experienced technical
personnel only. Discharging
of large filter capacitors with suitable resistors is necessary
for safety and the protection of components during repair
work. Fuses should
always be
replaced with the same type and
rating as originally installed. A
blown fuse almost invariably
indicates other
faulty components which should be identified and
replaced before
a new
fuse is
installed.
A
blown
line
fuse
indicates likely failure of the power bridge rectifier, power
transistors Q1
and Q2,
and transistors
Q3 through
Q6, while a
blown output fuse indicates likely failure
of Q1, Q2, C1
and
CRl. Replace power transistors with the identical parts; not
with substitutes.
4-1
Rev - (1/87)
Advertisement
Table of Contents
