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Heathkit IT -3120 User Manual

Heathkit IT -3120
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Page
18
®
~
fUMeHail
PICTORIAL
14
Refer
to
Pictorial
14
for
the
following
steps.
( )
Be
sure
the
ON·OFF switch
is
in the OFF (out)
position.
( ) Install D cells
(1
-
1/2
volt
battery) in the battery
holders. Position the positive
(+) end
of
each
battery
to
the positive (+) terminal on
each
battery
holder.
( ) Carefully peel away the backing paper
from
the
blue
and
white
identification
label. Then
press
the label
onto
the inside
of
the
front
panel
as
shown.
Be
sure
to
refer
to
the numbers
on
this label in any
communications you have
with
the
Heath Company
about
this
kit.
BUSH I
NG
Detail15A
SM
A
LL
END
Refer
to
Pictorial 15
for
the
following
steps.
Refer to Detail
15A
and notice that the knob bushing is ta-
pered. Be sure,
in
the next step, to
placE!
this bushing
on
the
shaft with the small end facing out, or the knob will not slide
onto
it.
(Roll the bushing
on
a flat surface if you are unsure
about it; the bushing will gradually turn toward the small end.)
( ) Install a knob bushing
on
each of the front panel control
shafts.
USE
.A NUTDRIVER OR A
,,~
m
ING
LA
RGE
SC
REWDRI V
ER
AND
DRIVE
THE
BUSHING INTO
THE
KNO
B AS
SHO
WN
.
DO
NO
T
DR
IV
E I T I N T
OO
FAR
.
o REP
LA
CE T
HE
K
NOB
ON THE
CON
TR
OL
FR
OM
WHI
CH
IT
WA
S R
EM
OV
E
D.
PICTORIAL
15
In
the following step you will install knobs
on
the two control
shafts. Perform this step carefully, since it is difficult to remove
a bushing from a knob once it
is
fully inserted.
( ) Install knobs on each of the control shafts as shown in
the Pictorial.
This completes
the
wiring
of
your
Transistor Tester. Proceed
to
"Test
and
Adjustment."
®
®
u
NUT
DR
IV
ER
DRI VE
I N
UNTI L
___
KNOB
f'J\
PUS
H T
HE
KNO
B
PA
RT WAY
\V
ONTO
T
HE
B
US
HI
NG
o N
OW
C
AREF
ULLY
REMOVE
B
OTH
TH
E
BUSHIN
G AND
THE
KNOB .
DO
NOT
ALL
OW
TH
E
KNO
B
TO
C
OME
OFF
THE
B
USH
ING .
rJ'I
P
LA
CE
THE
KNOB
ON
A
TA
B
LE
\V
OR O
TH
ER
FI
RM
SURFA CE.
PLA CE A
50
FT
CLOTH
UN
DER
THE
KN
OB
TO
PRE
V
ENT
I T
FR
OM BEI NG MARRED.
THEN

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Heathkit IT -3120 Specifications

General IconGeneral
BrandHeathkit
ModelIT -3120
CategoryTest Equipment
LanguageEnglish

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