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ADJUSTING
TRACKING
& SENSITIVITY
LOW FREQUENCY
1. Connect the RF generator set to 600kHz modulation of 30% at 400Hz to the antenna terminal of the rear panel.
2. Connect VTVM
to REC jack or speaker terminal.
3. Set dial pointer to 600kHz on the dial calibrations.
4. Adjust the OSC-trans T303 and ferrite bar antenna so that output is at max.
HIGH FREQUENCY
1. Connect RF generator set to 1400kHz modulation of 30% at 400Hz to antenna terminal of the rear panel.
2. Connect VI'VM to REC jack or speaker terminal.
3. Set dial pointer to 1400kHz on dial calibrations.
4. Adjust trimmer Tco AM and TcA AM of FRONT
END so that output is at max.
FM ALIGNMENT
TPi—-o
gg
6
y FM
IFT
EM LA
FM Lo
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ADJUSTING
DISCRIMINATOR
1. Connect
sweep
generator
set
to
10.7MHz
to
FM
test point
(TP1)
through
resistor 33k.
2. Connect oscilloscope to the FM DET OUT (TP2).
3. Adjust
the primary
and
the secondary
of T101
so that wave
form to be ''S"
curve as figure of right and to be maximum gain.
ADJUSTING
CENTER
METER
& DISTORTION
1. Connect
RF
generator
the modulation
of 400Hz, the deviation of 75kHz
to the
antenna terminal of the rear panel] through the dummy antenna.
. Connect the oscilloscope and distortion meter to REC jack or speaker terminal.
. Set the dial pointer to the proper position so as not to be tuned.
. Adjust the secondary of T101 so that the center meter indicates just 0.
. Set the generator to 98MHz and output 60dB.
. Set the dial pointer 98MHz just tuned
. Adjust the primary core of T101 so that distortion is at minimum,
less than 0.5%.
A Dorp
WO
WD
Caution
: T101
Primary
Core is located at lower portion.
Secondary
Core is located at upper portion.
4VR-5436X
=
80>
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