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FM Muting Level Adjustment
Setting:
MUTING switeh:
ON
Procedure:
FM rf signal
generator
vTrvie
G07 wr
ee
———,
:
f
i
Po
set
Po}
FM antenna
OUTPUT
ne
terminal
AT302
Carrier frequency:
88 MHz
Modulation:
400.H2, 76 khz deviatian (100%)
Output level:
5.6 wlf (20 dB}
:
i.
Tune
the
set
to
98 MHz
by. pressing
the
MANUAL
TUNING switches.
2...
Adjust RT302 so that VTVM
reading suddenly.
changes,
R202
FM Stereo Separation Adjustment
'
ee
FM stereO
i
rey
VIVAL
Procedure:
mutaut channel | : bonnection 4 teseing 148)
FM rf stereo
LCH
|
LH
Ew
signal
aes
api IE eee
ee
:
i
i
:
ee
vIVM
Avo
MB
:
:
bos
Adjust
R-CH
L-CH
> RT202 for
oo aminkmam:
:
R-CH
RCH
FM ANT
REC OUT
aaa
fen
_
Carrier frequency:
G8MHz
i
bo Adjust
oe
or
level:
im¥ (6008)
L-CH
|
RACH
RY202 for
ode:
Stereo
:
fel
v e y
o e
Modulation:
|
minimum.
:
o . .
readingco
5
Audie (400 Hz). sub-channel:
33.78 kHz deviation [48 %)}
Pilot (19-kH2):
7.8 kHz deviation (10%)
L-CH Stereo separation:
@ —{B)
R-CH Stereo separation:
© ~O
The
'separations
of both
channels
should. be
equal.
[AM
SECTION]
@ Repeat
the
procedures
in each
adjustment
several times, and the frequency coverage and
tracking adjustments should be finally done by
the trimmer capacitors
Adjustment should be done fram
/
the component
sida.
:
1303
C7302
|
22¥
1610 kHe
vou
Le range
fF ALIGNMENT
Adjust fora maximum reading
pa VOM,
450 kHz » IPT3OL
ND
[ "TRACKING ADJUSTMENT
| Adjust for a maximum reading
om VIVA.
:
{
ee
ious
Greer
OGL
|
600 ke
€T301
1406 kHz
@i4 +f signal
generator
Put the lead-wire
antenna close. to
the see
30% amplitude
modulation &y
400 Mz signal
|
|
i
|
|
Automatic Stop Level Adjustment
AM rf signal
genreraror
ARTIOT
0:04 aF AM ANT
set
Modulation:
ne modulatiag.
—
|
|
Carrier frequency:
(OOO kee
Setting:
RT301:.mechanical mid
Procedure:
1. Tune the unit to the 1,000 kHz signal,
2s
Adjust output level of signal gener.
so. that
the second segment of SIGNAL LED lights up.
After the second segment of SIGNAL
LED goes
off, adjust RT301 so that it lights up
aga)
—
Pam
cpttgpeoce negara
ee
aia
Sab
era
Semiconductor Lead Layouts
28410278
288731
280809
288647-8
288834
2801986
2807 10-14
x
KL}
2847015
28C1362
2801364
28c1400
28D667-A
anode
28K 246
S4V B40
iPass
Figs
(Top view)
STK-3042
STK-2230
GL-SNYGS-A
i
on
|
OF a
i short
ah
' Cathode
GL-SPR20
GLONG?
anode
KV-1226
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