Filter
Top Products
iU'Hiill.llt.ll
itl'1l1:11I1ll.l1
• FM RF ALIGNMENT
• FM STEREO ALIGNMENT
----_
......
'-'-
nl
B;5
~
PILOT
76
kHz
VR2
eI
DC
BALANCE
FM
2nd
IO.7MHz
---.
T3
o
Azimuth
Screw
o
Fig. 20
CJ
AM ANT
550kHz
L304
• ALIGNMENT POINT ·Please refer to Circ·uit Board fortest points locaton.
FM SIGNAL GENERATOR FREQUENCY DC
BAND
DISPLAY VOLTMETER ADJUSTMENT REMARKS
..
_ CONNECTIONS
FREQUENCY SETTING
Disconnect No signal
87.5MHz
V·.·(+)
L5
Adjust for
1.2±0.05
V
applied
V··(-)
(FMOSCCoil)
readig on DCvoltmeter.
FM
Disconnect
Nosignal
108MHz
V ...
(+)
CT3 Adjustfor
8±0.1
V
applied
V···(-)
(FM OSCTrimmer)
reading on DC voltmeter.
Repeatsteps(1) and (2).
FM SIGNALGENERATOR FREQUENCY AC
BAND
DISPLAY
VOLTMETER
ADJUSTMENT REMARKS
CONNECTIONS FREQUENCY SETTING
Antenna socket
89 MHz
...
(+)
L1 (FM ANT Coil) Adjustfor maximum
(FMRFDummy
(400 Hz
30%)
89 MHz
V
..
(-)
L4 (FM ANTCoil) reading on AC voltmeter
Fig. 19)
FM
"
107MHz
107MHz
T ..
(+)
CT1
(FMANT
"
Trimmer)
-
(400 Hz
30%)
v··(-)
CT2 (FM ANT
Timmer)
Repeatsteps 4 and
5.
FM SIGNAL GENERATOR
FREQUENCY
DC
BAND DISPLAY VOLTMETER ADJUSTMENT REMARKS
CONNECTIONS FREQUENCY SETTING (center
"0")
Antenna scoket 89 MHz
V·
..
·(+)
T3
Adjust T3 for
-0.05~0.05
V
FM (400Hz,
30%
89 MHz
V
..
··(-)
(FM
1FT)
reading on DC voltmeter.
Mod. 60 dB)
.
Notes:
1.
Stereo modulator
................
-Connect
stereo modulator outputto EXT MODterminal ofsignal generator.
-Pilot
signal modulation to
"10%"
.
2. FM signal generator
. .. .. . . .. .. .- Frequency approximately 100 MHz/Outputlevel
to
"60~
70 dB", 1
~3
mY.
-Modulation mode to
"FM".
CIRCUIT SIGNAL FREQUENCY
AC ADJUSTMENT REMARKS
GENRATOR
COUNTER VOLTMETER
High side thru.
PILOT 89 MHz 100kO to test
--
VR2
Adjustfor76.00
kHz±50
Hz readign on
(0% Mod. 80dB)
point
V Negative I (Pilot)
frequency counter.
sidetoV
89 MHz
Makeadjustment so that whenthe antenna
SEPARATION
(400 Hz. 30% Mod.
f
..
LCh
(+)
VR1
inputis sUbjected to L modUlation (orR
...Rch
(+)
80 dB)
...
(-)
(Separation) modulation.) R channel output (or L
channel output) becomes minimum.
• AZIMUTH ALIGNMENT
TAPE
AC
AC
ADJUSTMENT
REMARKS
VOLTMETERG)
VOLTMETER@
Playbackthe azimuth tape.
Across headset
Across headset
V··Lch
(+)
Adjust for same reading on AC
V ..
Rch
(+)
voltmeterCD and @.
v··(-)
(6)
L-_---L
_
• DC BALANCE NB ALIGNMENT
(2)
(1)
(3)
(5)
(4)
II1ARKS
.2±0.05V
Cvoltmeter
.8±0.1
v
DC
voltmeter
II1ARKS
laximum
~r
"
JlARKS
laximum
~
rmaximum
mon
ope.
'ig. 16)
laximum
laximum
'ig. 17)
Fig.
21
r7l
lID