Heathkit IT-5283 - Page 5

Ps 35
(@egecm ars) pee
Precautions for Bench Testing When you make repairs to the Signal Tracer, make
sure you ate the causeas well as theeffect of the
© Be cautions when you test transistors. Al- trouble. If, for example, you find a damaged resistor
though they have almost unlimited life make sure you find out what (wiring error, etc.)
when used properly. they are much more caused the resistor to hecome damaged. If the cause is
vulnerable to damage trom excessive voll- not eliminated, the replacement resistor may become
age and current than other circuit compo- damaged when the tracer is put back into operation.
nents
Refer to the “X-Ray Views.” “Identification Charts.”
and the “Schematic Diagram” to locate the various
'® Be careful so you do not short any terminals. components.
to ground when you make voltage mea-
surements. If the probe slips, for example, Usea high impedance voltmeter to make the specified
and shorts outabias or voltage supply point. measurements in this section.
it may damage one or more cumponents.
In an extreme case where you are unable to resolve a
difficulty, refer to the “Customer Service” informa:
Do not removeany companents from the circuitboard tion inside the rear cover of the Manual. Your war-
while the Signal Tracer is turned on. ranty is located inside the front cover.
Troubleshooting Chart
This chart lists the “Condition” and “Possible Cause"
of specific malfunctions. If a particular part or parts
are mentioned ((1 for example} as a possible cause,
check that part to see if it was installed and/or wired
correctly. It is also possible, on rare occasions, for a
part to be faulty and require replacement