Table of Contents
Advertisement
. .
(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 ( P W
Light green
-
03
100
kSZ
200 kS2
03
Brown or Yellow
6 kQ
-
130 kS2
250
kS2
7 . 5 k 0
L
Table. 9-2
\
-
32-
Advertisement
Table of Contents
