Heathkit HW-9 - Page 76

Page
76
Heathkif
TEST
POINT
OHMMETER
READING
POSSIBLE
CAUSE
(
)
AF
GAIN
(lug
2) 0
to
lOkflas
you
rotate
the
control
clockwise.
A.
Shorted
cable
B.
Wiring
of AF
GAIN
control or
SELECT-
IVITY
switch.
(
)
Sidetone
In
cable
( )
(inner lead).
Infinite
SELECTIVITY
WIDE
position.
A.
Shorted
cable.
(
)
Wide
out
cable
(inner
lead).
8kft tol5kH
A.
Shorted
cable.
(
)
Set the
SELECTIVITY
switch
to
NARROW.
B.
Selectivity
switch
wiring
(
)
Narrow
out
cable
(inner
lead).
8ka
tol5kO
A.
Switch
wiring
or
cable.
(
)
Set your
ohrnmeter
to R
x
100.
(
)
Case of
Q424
(
)
Tx/In
cable
(inner
lead).
300
to 500
300
to 500
A.
Soldering,
or
Q424.
A.
Cable
shorted
or
open.
B.
Oscillator
board L137
shorted
or
open.
This
completes
the Initial
Tests.
Proceed
to the
"Alignment"
section.