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(a)
A.V.R.
TROUBLE IDENTIFICATION by APPEARANCE
If
an
A.V.R.
electronic part is burnt dark, or the surface epoxy resin melted, it often indicates A.V.R.
trouble.
(b) IDENTIFYING A.V.R. TROUBLE by CHECKING INTER-LEAD RESISTANCE
Check the inter-lead resistance of the A.V.R. with a tester, referring to the following table.
If
the tester readings very greatly from the values specified in the table on'next page, the
A.V.R.
is
faulty.
NOTE
:
lake teater inaccuracy into account
in
reading the tester.
(c) IDENTIFYING A.V.R. TROUBLE by MOUNTING and OPERATING in
THE
GENERATOR
SCR
or
transistor damage cannot be detected by simply looking at the A.V.R. or checking the lead
resistance. Check it by mounting the suspectedly faulty A.V.R.
in
a normal generator,
or
mount a
mormal A.V.R. in a generator which fails to generate voltage.
Checking
table
for analogue circuit tester.
~~ ~~
Apply black (minus) needle
of
the circuit tester
Analogue circuit tester
Yellow
Red
Light
Brown or
White
Yellow
green
Yellow
-
03
03
03
03
Red
03
circuit tester
100
kQ
03
-
46
kQ
03
White
needle
of
the
200
kSZ
03
105
kQ
-
Apply red (PW
Light green
-
03
100
kSZ
200
kS2
03
Brown or Yellow
6
kQ
-
130
kS2
250
kS2
7.5
k0
L
Table.
9-2
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32-