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Motorola 9SMV Service Manual page 10

196 volkswagen radio
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STEP
GENERATOR
CONN
ECTION
GENERATOR
F
R
EOU
ENCY
(4OO
Hertz
Mod)
TUNER
SET TO
ADJUST
REN/AR
KS
Connect
an
output
meter
across the
output
to
maintain
2.83
volts
(1
ALIGNMENT
speaker
voice
coil.
Set volume
to
maximum
watt
across
B
ohm load)
on
output
meter
and
tone
to
treble.
Attenuate
signal generator
at
all
times
to
prevent receiver
overloading.
^
^'
n
TO
CALIBRATE
POINTER -
Tune
radio
to
1O0OKhz
signal and bend
pointer
until
center
of
pointer
coincides
with
the
center
of
the
lOOOKhz
mark
on
the
dial
scale.
HEX
ALIGNMENT
TOOL
BOTTO11/1
CORE
FtG.
13
30
PF
IF
ALIGNMENT DETAIL
{\
TOP
c0Rt
r_3
L4
t2
RF
CORE
OSC
CORE
ANT
CORE
1020
KHZ
tom
KHZ
1020
KHz
\
.O
SIGI\AL
--,\'
{;l
t\Jl
RAIOR
}-r
I
GENERATOR-
-
}_.
uL'\l
\A
luK
--f
-
I
,no.-
|
-#
|
\MtlA.shlriLUAN
L---l---l
lllUSl
Er
AIIACHFL
L
___
l
_
_
_.1
uusT
Br
ATTACHEL
PLUG
TO
FIT
RTCEIVER
ANTFNNA
RECEPTACLE
TO RFCI
I
VER
.>ANTEi\iiA
REC';PTACt.T
''
TO
Ptiic
FIG.
14
DUMMY
ANTENNA DETAIL
RECEPT
1610
KHZ
FIG.
T5
ALIGNMENT
LOCATION
-
gSMV,9SMV-6
1
Antenna
receptacle
thru
1mf
&chassis
262.5Kh2
IF ALIGNMENT
Hiqh end stop
T1,r2
Adjust
for
maximum.
RF
ALIGNMENT
2.
I
Antenna
receptacle
I
'1
610Khz
High end
stop I
CsB,
CsA,
C1 |
ROjust
for
maximum.
thru
dummy
(see
Figure)
Note:
Do not
perform
Steps
3, 4, 5
and 6
unless
tuner
has
been
tampered
with
or
components
have been
replaced. Before
proceed-
ing
with
Step
3,
back
tuning
cores
as
far
as
possible
out of
coil forms
to
eliminate their effect
on
trimmer
adjustments.
Remove
dial
scale,
b:ckground
and
pilot
light
socket
to
expose core
screws.
3.
I
Antenna
receptacle
161OKhz
High end stop
CsB,
CsA,
C1 |
Adjust
for
maximum.
thru dummy
(see
F
igu
re)
4. 1"
1
020 Khz
1610Khz
Tuner
carriage
.443"
from
high end stop
High end stop
L4,
L3,
L2
|
Adjust
for
maximum.
5.t"
C5B,
CbA,
C1 |
Adjust
for
maximum.
6.
I
Repeat Steps
4 and
5
until
no
further
increase;
Step 5 should be
last step.
7.
FINAL ANTENNA
TRIMMER ADJUST
Weak
station
around
1400
Khz
MENT
l.'
Adjust
for
maximum
with
radio
installed
in
car
and antenna
fully
extended.
I2
zND
IF
IL
262.5
KHZ
lST
IF
262.5
KHZ

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