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RECOMMENDED TEST EQUIPMENTS
e FM Standerd Signal Generator
Line Voltage Isolation Transformer
e FM Stereo Standerd Signal Generator
{20 —1k—15kHz
Main 90% Pilot 9%]
e Radio IF Generator Scope
[450kHz + 10kHz
10.7MHz=+ 0.3MHz]
e DC Voltmeter [Hight Impedance 1MQ]
FM Dummy Antenna [759 — 3000 Balanced Type]
Distortion Meter
Oscilloscope
AM TUNER ALIGNMENT
oe
Standard test frequency 1kHz and Modulation 30% at AM
GENERATOR
DIAL SETTING
INDICATOR
PROCEDURE
Position of
non-interference
Minimum
Frequency.
1. AMIF
ALIGNMENT
Adjust AM DET Coil (T6) for
maximum gain output.
Center of 515kHz
calibration mark
on dial.
Connect AC VTVM
and Oscilloscope
to TP2 and ground
terminal.
Connect Standard Loop
Antenna to output
terminal of AM RF Signal
Generator. Place Loop
Antenna 60cm away from
Loop Antenna of MC-715.
Generator setting to
515kHz.
Modulate with 1kHz
(30% modulation).
Adjust AM OSC Coil (T5) and
AM ANT Coil (T3) for maximum
gain output.
2. AM RF
TRACKING
ALIGNMENT
(51 5kHz)
Center of
1670kHz
calibration mark
on dial.
Adjust AM OSC Trimmer (TC4)
and AM ANT Trimmer (TC8) for
best curve form and maximum
deflection.
an.
Change generator
Same as above.
setting to
1670KHz.
3.
(1670kHz)
-17-
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