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MEASUREMENTS AND ADJUSTMENT
@ Radio
Control Positions
@ Volume Control
@ Tone Control
@ FM Mode Selector
Maximum
FM AUTO
Audible level of speaker sound (AM-RF, FM-RF); Minimum (AM-IF, FM-IF).
@ Output of signal generator should be no higher than necessary to obtain output reading.
@ Make certain that speaker system is connected to the receiver when aligning (or use relivant dummy load resistors).
AM-IF ALIGNMENT
Test equipment connection is shown in figure.
Place unit into AM position.
Place the radio dial setting to point of noninterference.
Adjust T202
and T203
for maximum
output
and
sym-
metrical curve.
GENESCOPE
CONDITION
Frequency
450k Hz
1F-GENESCOPE
(TP203)
(TP202)
MW-RF ALIGNMENT
1.
2;
Test equipment connection is shown in figure.
Place unit into MW position.
Place the radio dial and signal generator setting to 513 kHz.
(Set the dial pointer to the left end of the scale or
lower frequency edge.)
Adjust L205 for maximum output.
Place the radio dial and signal generator setting to 600 kHz.
Adjust L201 for maximum output.
Place the radio dial and signal generator setting to 1645
kHz.
(Set the dial pointer to the right end of the scale or up-
per frequency edge.)
Adjust CT202 for maximum output.
Place the radio dial and signal generator setting to 1645
kHz.
. Adjust CT201
for maximum output.
Repeat steps 3. ~
10.
F
M -IF ALIGNMENT
Test equipment connection is shown in figure.
Place unit into FM position.
Place the radio dial setting to point of noninterference.
Adjust
T7101
for maximum
amplitude
and
symmetrical
curve.
(Refer to Fig. 1)
Adjust T201 for maximum amplitude and proper linearity
between about + 100 kHz markers. (Refer to Fig. 2)
Note: Before aligning, turn the corest of T201
fully counter-
clockwise.
AM SIGNAL GENERATOR
CONDITION
Modulation
Modulation Frequency
30%
400 Hz
AM SIGNAL GENERATOR
OSCILLO-
AC VTVM_
SCOPE
GENESCOPE
CONDITION
Frequency
IF GENESCOPE
FM-RF ALIGNMENT
Test equipment connection is shown in figure.
Place unit into FM position.
Place the radio dial and signal generator setting to 87.3
MHz.
(Set the dial pointer to the left end of the scale or
lower frequency edge.)
Adjust L101 and L102 for maximum output.
Place the radio dial and signal generator setting to 108.6
MHz.
(Set the dial pointer to the right end of the scale or up-
per frequency edge.)
Adjust CT101 and CT102 for maximum output.
Repeat steps 3. ~ 6.
Note: As three
output
reading
will be present,
adjustments
must be made at center frequency.
FM SIGNAL GENERATOR CONDITION
Modulation
s
.. - 30%
Modulation Frequenc
. . 400 H
ay
OSCILLO-
AC
VTVM
P.
FM SIGNAL GENERATOR
CNT
pian:
Dummy
Antenna
J (tP102)
(TP302)
Terminal
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