12
HCD-EP505
TUNER SECTION
0 dB=1
µ
V
[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
MAIN board
SPEAKER terminal (CN503)
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
TP (FM ANT)
MAIN board
SPEAKER terminal (CN503)
digital voltmeter
100 k
Ω
MAIN board
TP (FM VT)
TP (AM VT)
Ver 1.1
no mark : EXCEPT AEP, UK, Chinese models
< > : AEP, UK, Chinese models
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T401 <T406>
450 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L408
530 kHz
1.3
±
0.1 V
<T402>
<531 kHz>
Confirmation
1,710 kHz
7.8
±
0.5 V
<1,602 kHz>
<7.1
±
0.5 V>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L407 <T401>
603 kHz
TC402 <TC401>
1,404 kHz
FM FREQUENCY COVERAGE CONFIRMATION
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
87.5 MHz
2.4
±
0.1 V <1.4 to 1.6 V>
Confirmation
108 MHz
6.8
±
0.5 V <7.3 to 8.5 V>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
TC401
106.1 MHz
(EXCEPT AEP, UK, Chinese models)
Adjustment Location: MAIN board (See page 14)
Summary of Contents for HCD-EP505
Page 14: ...14 HCD EP505 MEMO ...
