TAP103
TAP104
11
(11)
1-682-795-
MAIN BOARD (SIDE B)
TP (VT)
digital voltmeter
(DC range)
TUNER SECTION
AM Section
BAND : AM
FM Section
BAND : FM
US model only
TV/WEATHER Section
BAND: TV/WEATHER
Adjustment Location : Main board (See page 7)
0 dB = 1µV
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
set
16 Ω
phones jack (J301)
level meter
Frequency Coverage Adjustment
Setting :
C9
L2
L7
US
FM RF signal
generator
33.75kHz frequency
deviation by 1kHz signal.
Output level :
as low as possible
TP
(RF)
0.01
µ
F
MAIN BOARD (SIDE B)
TP(RF)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
no mark : 10kHz step
< > : 9kHz step
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust parts Frequency display
Reading on digtal
voltmeter
L5
530kHz 1.1 ± 0.15 V
<531kHz>
Confirmation
1,710kHz 8.6 ± 0.4 V
<1,602kHz> 9.5 ± 0.4 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 620kHz <621kHz>
CT1 1,400kHz <1,395kHz>
FM FREQUENCY COVERAGE CONFIRMATION
Frequency display Reading on digtal voltmeter
Confirmation 87.5MHz Standard value : 6.5V or less
Confirmation 108MHz 8.9 ± 0.4V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 87.5MHz (US), 98MHz (EXCEPT US)
Confirmation 108MHz
US model only
TV TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7 TV 7CH
TV FREQUENCY COVERAGE CONFIRMATION
Frequency display Reading on digtal voltmeter
Confirmation TV 2CH 1.1 ± 0.15V
Confirmation TV 13CH 8.0 ± 0.4V
Confirmation WEATHER 1CH 3.65 ± 0.3V
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