Hickok 6000A - Page 16

(6)
Remove
the
rectifier
from
the
test
socket
and
reverse
the
rectifier
leads
and
replace
in
test
socket.
The
rectifier
is
now
biased
in
the
reverse
direction.
A
meter
reading
that
is
10%
or
more
of
full
scale
deflection
indicates
a
defective
rectifier
and
it
should
be
replaced,
j.
DIODE
TESTS
-
SILICON
and
GERMANIUM
Diodes
are
checked
bythe
same
procedure
as
testing
rectifiers,
because
they
rectify
but
do
not
handle
large
currents
like
power
rectifiers.
Some
knowledge
of
the
characteristics
of
the
diode
being
tested
will
help
because
some
high
conduction
diodes
used
in
video
detectors
can
be
rated
good
if
they
produce
a
10
:
1
(10%)
forward
to
reverse
conduc-
tion
ratio.
к
PILOT
LAMP
TEST
(For
use
with
the
Accessory
Tube
Mounting
Plate)
The
tube
mounting
plate
in
Figure1-1
is
used
to
test
pilot
lights.
This
adapter
can
be
mounted
in
the
center
of
the
top
panel.
To
testa
pilot
light
use
the
seven
pin
socket
in
the
upper
right
hand
corner
of
the
tube
mounting
plate,
and
set
the
operating
controls
as
follows:
(1) Set the FILAMENT SELECTOR to B.
(2) Set the FILAMENT SELECTOR to X.
(3)
Set
the
FILAMENT
voltage
selector
tothe
filament
voltage
of
the
pilot
light.
(4)
Insert
pilot
lightto
be
tested
into
the
center
of
the
seven
pin
socket,
which
is
mounted
on
the
tube
mounting
plate.
(5)
Pilot
light
will
light
if
good.
LESE