Basic Troubleshooting - Crown PSA-2 Service Manual

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Fig. 7.14 Soldering to a Lug
Fig. 7.15 Turret Terminal
Desoldering
Fig. 7.16 Wire Braid Desoldering
Soldering is one of the most reliable methods of joining
electronic component parts and assemblies. When
properly used, it can be one of the most helpful tools in
service repair work.
7.4 Basic Troubleshooting
As is well known, time is an important factor in providing
efficient service repair. Therefore, several time-saving
troubleshooting steps are listed below. These hints may
or may not already be implemented in your service work.
If not, you may wish to experiment with them in order to
help improve your efficiency. After all, time is money!
A. Establishing Problems
1) Getting the problem to re-occur on the service
bench.
2) Getting an understanding of the probable cause.
Some troubles will be obvious upon visual inspection.
When the trouble (or its symptoms) is not so obvious
ask:
a) Exactly what was the problem; how was it
noticable?
b) How was the unit being used?
c) Has the system as a whole been carefully
examined for possible external problems?
d) How long had the unit been operating when the
problem occurred? Was it heat related?
If the user is unavailable or unable to explain the trouble
the next step is a thorough visual inspection.
B. Visual Inspection
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