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| OR-2000
arR—2000 |
AM ALIGNMENT
CHART
Signal
Band
Step
Generator
Radio
Dial Setting
Frequency
Approximate
1000 kHz
Adjust for maximum
indication
T101, 105
Tuning Knob Fully Counter-
1
460 kHz
clockwise
L102
Adjust for maximum
indication
5
6
Repeat steps 4 and 5 as required
FM-IF
ALIGNMENT
WN
test point
E or chassis ground.
5. Connect the SWEEP VOLTAGE
OUTPUT of the sweep generator to the oscilloscope.
6. Proceed as outlined in the FM-IF ALIGNMENT CHART.
FM-IF ALIGNMENT CHART
Sweep
generator of
|middle
10.7 MHz
position
center freq.
with 10.7
MHz marker.
Connect sweep
generator output to
a three-turn loop
antenna of 10cm
diameter.
FM Generator
Receiver
under test
FM Sweep
Generator
Receiver
under test
3-turn Loop Antenna located near the LOO6
Figure 9.
pees ee
S Curve
Figure
10.
FM-RF ALIGNMENT
. Connect the VTVM
across the voice coil or an 8 ohm dummy
load.
. Set the volume control to mid-position.
6. Proceed as outlined in the FM-RF ALIGNMENT
CHART.
om
Bm
WN
—
FM-RF
ALIGNMENT
CHART
Step
|
Signal Generator
Radio Dial Setting
Adjustment
Remarks
1
87.5 MHz
Tuning Knob fully
L007
Adjust for maximum
|
Counterclockwise
Clockwise
(Osc. Trim.)
(Highest Frequency)
Repeat steps 1 and 2 as required.
4
|
90MHz
C003
5
106MHz
|
(RF Trim.)
pe
|
Repeat steps 4 and 5 as required.
output indication
LOOS
(RF Coil)
Output indication
(Sor
ee
ee
a
oe 7
A
To signal generator
50 ohm
|
To receiver
(SG impedance 50 ohm);
50 ohm
,
|
E
75 ohm dummy antenna
Figure 11.
CAUTION:
a
Gop
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