13
HCD-EP30/EP40
no mark: US, Canadian, E, Australian models
< > : AEP, UK models
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation
530 kHz
1.5 ± 0.2 V
<531 kHz>
T102
1,710 kHz 7.7 ± 0.3 V
<1,602 kHz> <7.3 ± 0.3 V>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L110 600 kHz <603 kHz>
TC102 1,400 kHz <1,404 kHz>
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L104 87.6 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
L103 89.9 MHz
TC101 105.9 MHz
Adjustment Location: MAIN board (See page 14)
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 (JK401
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 (JK401
digital voltmeter
100 k
Ω
MAIN board
TP10 (FM VT)
TP11 (AM VT)
w
w
w
.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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