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FM tracking
adjustment
(PC-W150 G)
FM tracking
adjustment
(PC-W150 Gl)
<Conditions >
1. Radio band : FM
2. Signal input : 75 0 unbalance
3. Input frequency : Positive side to TP1
Negative side to TP2
87.5+0.1 MHz, 108.3+0.05 MHz
90 MHz, 106 MHz
< Adjustment >
. Receive
87.5+0.1
MHz
at maximum
variable
capacitor position.
. Adjust L1 so that output level becomes maximum.
. Receive
108.3+0.05 MHz
at minimum
variable
Capacitor position.
;
. Adjust TC1 so that output level becomes maximum.
. Adjust the above
aligning position
(L1 & TC1)
repeatedly so that the tuner can be received above
frequency range (band width).
. Receive 90 MHz and adjust L2 so that output level
becomes maximum.
. Receive
106 MHz and adjust TC2 so that output
level becomes. maximum.
. Adjust the above
aligning position
(L2 & TC2)
repeatedly so that the tuner can be obtained the best
sensitivity.
<Conditions >
1. Radio band : FM
2. Signal input : 75 Q unbalance
3. Input frequency : 87.35+0.05 MHz,
108.3+0.05 MHz
90 MHz, 106 MHz
< Adjustment >
. Receive
87.35+0.05 MHz
at maximum
variable
capacitor position.
. Adjust L1 so that output level becomes maximum.
. Receive
108.340.05 MHz
at minimum
variable
capacitor position.
:
. Adjust TC 1 so that output level becomes maximum.
. Adjust the above aligning position (L1 & TC1)
repeatedly so that the tuner can be received above
frequency range (band width).
. Receive 90 MHz and adjust L2.so that output level
becomes maximum.
. Receive 106 MHz and adjust TC2 so that output
level becomes maximum.
:
. Adjust the above
aligning
position
(L2 & TC2)
repeatedly so that the tuner can be obtained
the best
sensitivity.
;
Input frequency
: 87.5+0.1
MHz
maximum
Input frequency
: 108.340.05 MHz
maximum
Input frequency
: 90 MHz
maximum
Input frequency
: 106 MHz
maximum
Input frequency
: 87.3540.05 MHz
maximum
Input frequency
: 108.340.05 MHz
maximum
Input frequency
: 90 MHz
maximum
Input frequency
1.106 MHz.
maximum
FM MPX
adjustment
< Conditions >
1. Radio band : FM
signal)
3. Signal input : TP1, TP2
< Adjustment >
+100 Hz.
[9] Block Diagram
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2. Input frequency
: 98 MHz
(unmodulated
60 dB
4. Measuring point : TP7, TP8
1. Connect
the
digital
frequency
counter
to TP8
(positive side) and TP7 (negative side).
2. Adjust VR1
so that above
frequency
is 19 kHz
VR |
.
QoQ.
aati! the clip
:
180kQ
LVoltm
Signal should be amplified by an electronic voltmeter
so that sounter could measure its frequency.
Fig. 8-5
| PC-W150 B/E/G/GI
|
item
Measuring Conditions and Main Adjustments
Standard Value
Adjusting Point
-
(No. 1785)
17
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