Heathkit HW-12 - Page 36

Teqtarsosuaes
mre err Sue
a Te it ln i mers om
RG
ranma rhe
RL
TEST
POINT
|
RESISTANCE
|
|
TEST
POINT
|
RESISTANCE
Tube
socket
V6
pin
3
vrs
KQ
|
[Tube
socket
V10
pin
1
|
are
Tube
socket
V9
pin
4.1.25
megohm
| |
Tube
socket
V2
pin
9
.
toa
Tube
socket
V12
pin
8
|40
KQ
(20
KQ)*
|
[2
in
section
2C
0
to
20
KQ
(adjust
with
UT
Tur
NE
LEVEL
control)
Tube
socket
V12
pin
6
120
7)
|
|
Tube
socket
V1
pin
9
I
to
2
megohm
(adjusts
s|
[atic
#2
j}
|o
2
|
with
MIC
GAIN
eontrol)
:
feet
the
FUNCTION
switch
to
PTT
and
the
Meter
@
Tube
socket
V10
pin
V/
2
megohm
switch
to
OPERATE
TUNE,
;
Tube
socket
V2
pin
9
420
megohm
Lene:
Use
the
OHMS
x
100
scale,
Just
touch
the
4
t
a
|test
point
and
note
that
the
S
meter
deflects;
do
a
6
in
section
4C
10
to
1
megohm
(adjus
not
attempt
to
measure
the
resistance,
3
with
VOX
control)
"y
|
|
g
;
13
in
section
1B
S
Meter
deflects
(direc-
|
Qin
section
2C
WV
[20
Ko
|
tion
depends
upon
ohm-
@
°
i
|
meter
polarity)
:
Mic
#1
/
10
megohms
minimum
|
|
@
1
/
Set
the
FUNCTION
switch
to
TUNE
and
use
the
4
Mic
#2
V/
20
megohm
OHM
x
100
scale,
a
i
ij
:
16
in
section
5C
\/
|
Infinity
with
AF
cam]
i
in
section
4A
|S
Meter
deflects
@
switch
"in,"
50
KQ
(10
KQ)*
with
AF
GAIN
Set
the
FUNCTION
switch
to
PTT
and
the
Meter
switch
"out,"
switch
to
BIAS
SET.
Use
the
OHMS
x
1
scale.
4
Set
the
FUNCTION
switch
to
PTT.
Pl
ve
ae
:
los
in
section
5C
Meter
deflects
(opposite
|
Tube
socket
V10
pin
2
|
|direction)
@
Tube
socket
V2
pin
9
i|
20
megohm
|
PP
the
FUNCTION
pwitch
to
OFF.
Pct
+
fe
:
9insection
2c
V
Jou
|
iota
jack
/]0.42
|
é
e
/
{
Mic
#2
V
[2°
megohm
RELAY
jack
V/
Infinity,
then
press
relay
,
for
02
:
Set
the
FUNCTION
switch
to
VOX.
]
4
ANT
jack
0.4
9,
then
press
relay
‘
Tube
socket
V10
pin
uy
megohm
|
|
i,
for
10
KQ
Tube
socket
V2
pin
V
25
megohm
|
["”
jack
Y
yo
Q
mi
9
in
section
2C
./
109
in
section
1C
VY
id
K&,
then
press
relay
|
‘
|
|
|
for
02
al
Mic
#2
/
|
20
megohm
|
|°
in
section
4B
j
0
to
10
KQ
(adjusts
with
Y
|
;
[|
TRF
GAIN
control)
then
Set
the
FUNCTION
switch
to
TUNE.
if
J
Ipress
relay
100
Ka
a
*With
OPTIONAL
resistors
installed,
=
rarer
eee
This
completes
the
Initial
Tests,
If
all
resistance
47).
Position
pilot
lamp
socket
PL1
so
the
lamp
al
readings
were
in
agreement
with
the
chart
(
{or
clears
the
meter,
within
420%),
install
the
tubes
in
their
proper
CAUTION:
When
installing
the
tubes,
support
the
Y
|
sockets,
and
the
pilot
lamps
in
the
pilot
lamp
circuit
board
from
underneath
with
a
finger
to
sockets,
See
Pictorial
19
(fold-out
from
Page
prevent
circuit
board
damage,
||