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WOQ-T282H/E/Q
(E)
CIRCUIT ADJUSTMENT (TUNER SECTION)
Oscilloscope
AM IF/RF
MW/LW
Sweep
Test
:
SIGNAL
400 Hz, 30%, AM modulated
Loop
Bar Antenna
GENERATOR
|
TEST
FRE-
AD-
>
lL
STEP | STAGE | QUENCY
|POINTER | JUST-
SETTING | MENT
:
Figure 16—1
AMIF
MW IF (Set the band selector switch to MW position.)
Generator
455 kHz or 468 kHz
Mee dz | High
3
Adjust for
E:
frequency
best "IF" curve.
468 kHz
LW RF (Set the band selector switch to LW position.)
Lowest
L10
'
coverage
maximal
Electronic
iat
a
reaver
™
Signal
Test
MW/LW
Malimetsr
arable:
Generator
Loop
Bar Antenna
;
i
Repeat steps 2 and 3 until no further improvement can be
made.
MW RF (Set the band selector switch to MW position.)
Z = 50 ohms
C=17
pF
Z: Output impedance of signal generator
T
.
Tracking
maximal
:
Repeat steps 11 and 12 until no further improvement
os
fi
pen
SW RF
(Set
the band
sel
itch
ition.
(Set
the
band selector switch
to SW position.)
L7(LW)
L7(MWy
|
Lowest
L8
frequency
Band
Adjust for
coverage
maximal
Highest
TC6
output.
frequency
Repeat steps 14 and 15 until! no further improvement can be
made.
Adjust for
maximal
Repeat steps 8 and 9 until no further improvement
I
can be made.
TUNER
PWB-B
—_ wd
Figure 16—6 ADJUSTMENT POINTS
—~16—
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