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nD, Oxs10)0)
MEASUREMENTS AND ADJUSTMENTS
&
ALIGNMENT INSTRUCTION
READ
CAREFULLY
BEFORE
ATTEMPTING
ALIGNMENT.
1. Set volume control to minimum.
2. Set graphic equalizer to center.
3. Set band switch to AM or FM.
4. Set balance control to center.
&
MW and SW ALIGNMENT
Fashion loop of
several turns of
wire and radiate
signal into loop of
receiver.
455 kHz
30% Mod.
at 400 Hz
AM
AM
(5)
& FM ALIGNMENT
SIGNAL GENERATOR
or
SWEEP GENERATOR
CONNECTIONS
FREQUENCY
BAND
10.7 MHz
(SWP.)
High side thru.
0.001 UF to test
(1)
point 7 . Negative
side to test point W .
(2)
SIGNAL GENERATOR
or
SWEEP
GENERATOR
CONNECTIONS
FREQUENCY
Tuning capacitor
Tuning capacitor
CT6 (AM OSC
(* 1)Cement antenna bobbin with wax after completing alignment.
5. Set mode switch to stereo.
6. Set power source voltage to 15 V DC.
7. Output of signal generator should be no higher than
necessary to obtain an output reading.
INDICATOR
RADIO DIAL
(ELECTRONICS
SETTING
VOLTMETER
REMARKS
'ADJUSTMENT
" |
T2 (AM IFT)
L7 (AMOSC
Coil)
or SCOPE)
AM-IF ALIGNMENT
Point of non-
interference. (on/
about 600 kHz)
Output meter
across voice coil
Adjust for maximum
output.
MW-RF ALIGNMENT
Adjust for maximum
output.
Adjust for maximum
output. Adjust L4 by
moving coil bobbin
along ferrite core.
Adjust for maximum
output.
Repeat steps
(2)~(5).
(*1)L4 (AM ANT
Coil)
CT3 (AM ANT
Trimmer)
INDICATOR
(ELECTRONICS
VOLTMETER
or SCOPE)
FM-IF ALIGNMENT
Connect vert.
amp. of scope to
test point Y .
Negative side to
test point 7 .
RADIO DIAL
ADJUSTMENT
REMARKS
SETTING
Point of non-
interference. (on/
about 90 MHz)
Adjust for maximum
amplitude.
(Refer to fig. 6).
T1 (FM 1st IFT)
Adjust for maximum
amplitude.
(Refer to fig. 7).
T3 (FM 2nd IFT)
(3)
Connect to test point
109.2 MHz
W through FM dummy
antenna. Negative
(4)
side to test point Y .
(5)
90 MHz
FM
FM
FM
FM
(6) po
106 MHz
(* 2) Three output responses will be present: proper tuning is the center frequency.
FM-RF ALIGNMENT
Output meter
Variable
:
L3 (FM OSC
( * 2) Adjust for maxi-
capacitor
across
'
fully closed
voice coil
ce)
EOD
Variable
CT2 (FM OSC
"
capacitor
ss anoss er)
fully open
mesma |_|
:
( * 2) Adjust for maxi-
CT1 (FM ANT
mum output.
Trimmer)
Repeat steps
(3)~(6).
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