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JVC P-100EUC Service Manual page 7

B/w portable television receiver with fm/am radio
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4. Supply DC 6V to P6.
Alignment procedures
Align according to the chart below.
Maximum
tune to
620kHz
tune to
1400kHz
1400kHz
| 6 | Repeat the steps 4, 5
Chart 1
Maximum
FM RF Alignment
Test Equipments
Sweep generator with markers
Marker frequency : 87.3, 90, 106, 109MHz
V.T.V.M.
Power supply DC 6V
Preparations before Alignment
4. Supply DC 6V to P6.
Alignment procedures
Marker
Variable
Adjust- | V.T.V.M.
Frequency | Capacitor Setting
ing
Reading
Repeat the steps 1, 2
tune to
90.0MHz
90MHz
L801
;
é
Maximum
tune to
106.0MHz
1O6MHz
C805
Ea
Repeat the steps 4, 5
Chart 2
Maximum
P-100EUC
AM RF AGC Alignment
Test Equipments
Sweep generator
Test loop antenna
D.C. voltmeter O~1V range
Power supply DC 6V
Preparations before Alignment
1. Connect output of sweep generator to test loop antenna,
keep the distance
between
the test loop antenna
and
built-in ferrite bar antenna to 60cm.
2. Connect D.C voltmeter to TP-804.
3. Supply DC 6V to P6.
Alignment procedures
1. Tune output of sweep generator to 1400kHz and regulate
it to 120dB.
2. Tune the variable capacitor to 1400kHz.
3. Align RF AGC control (R832) so that the DC voltmeter
indicates 0.47 volts.
Parts Arrangement
For Radio Alignment
S|
Band Switch
FM AFC
|
AM
Bar Antenna
Fig. 13
No. 3308

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