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FM VCO
FREQUENCY
ALIGNMENT
@
As shown in Figure 12—1, make connection of instruments.
DIAL
ADJUST
STEP | FREQUENCY
POINTER
MENT
VCO Frequency FM Signal Generator (Mono signal, 400Hz,
100% modulated)
a
A
oe
"F
if
iti
FM
mono"
position
(nee
:
Adjust for
98MHz (54cB)
VR101 | 76kHz
+ 300Hz
FM
SIGNAL
GENERATOR
ADJUSTMENT
POINTS
Figure 12—1
HIGH
IMPEDANCE
FREQUENCY
COUNTER
Figure 12—2
NOTES
ON SCHEMATIC
DIAGRAM
1. The voltage in each part is measured
by using a digital
multi-voltmeter,
with the unit being kept in play mode
(with no signal given). As for the radio circuit, the voltage
indication with parentheses is in FM mode and that without
parentheses is in AM mode.
2. Resistor:
°Unless
otherwise
specified,
any
resistance
is expressed
in ohms. K=1000 ohms, M=1000K ohms. The rated power
is 1/6W.
°The
symbol
" ~-"
means
ordinary
resistor and the
symbol " +A-"' means printed resistor.
3. Capacitor:
REF. NO.
FUNCTION
POSITION
SW103
FM Mode/Tape
Selector
ST/METAL —
NORMAL/MONO
sw201
Function Selector
FM — TAPE
SW301 (A,B)
Playback Head Track
Selector
Forward — Reverse
$SW302 (A,B)
Tone Control
HIGH
— LOW
SW303
Muting
ON
— OFF
SW304
Main
ON — OFF
SW305
Bypass
ON — OFF
SW501 (A,B)
Function Selector
4
FM/TAPE — AM
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