13
HCD-EP404
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
Function : TUNER
Band switch : AM
[FM]
Setting:
Function : TUNER
Band switch : FM
•Repeat the procedures in each adjustment several times, and the frequency
coverage and tracking adjustments should be finally done by the trimmer
capacitors.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
+
–
level meter
set
32
Ω
HEADPHONE board
PHONES jack (JK501
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
+
–
level meter
set
32
Ω
0.01
µ
F
MAIN board
FM ANT
HEADPHONE board
PHONES jack (JK501
digital voltmeter
100 k
Ω
MAIN board
TP (FM VT)
TP (AM VT)
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation 531 kHz 1.5 ± 0.2 V
T101 1,602 kHz 7.3 ± 0.3 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L110 603 kHz
TC102 1,404 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L103 87.5 MHz 2.1 ± 0.2 V
Confirmation 108 MHz 7.0 ± 0.4 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L102 89.9 MHz
TC101 105.9 MHz
Adjustment Location: MAIN board (See page 14)
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