HCD-EP707
14
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
Function: TUNER
TUNER/BAND switch: AM
[FM]
Setting:
Function: TUNER
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
SPEAKER JACK board
SPEAKER terminal (SP801
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 µF
MAIN board
TP (FM ANT)
MAIN board
TP (GND)
SPEAKER JACK board
SPEAKER terminal (SP801)
digital voltmeter
100 kΩ
MAIN board
TP (VT)
TP (GND)
SECTION 4
ELECTRICAL ADJUSTMENTS
Tape Speed Adjustment
Setting:
Function: TAPE
Procedure:
1. Playback WS-48B (tape center) in the FWD state.
2. Adjsut the volume in CAPSTAN/REEL motor so that the fre-
quency counter reading becomes 3,000 Hz.
Specified Value: 2,910 to 3,090 Hz
3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,955 to 3,045 Hz.
Adjustment Location:
PRECAUTION
1. Setting
MEGA BASS switch : OFF
TAPE DECK SECTION 0 dB=0.775 V
Test tape
Type Signal Used for
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
frequency counter
test tape
WS-48B
(3 kHz, 0 dB)
set
SPEAKER JACK board
SPEAKER terminal (SP801)
–
+
47 kΩ
CAPSTAN/REEL
motor
Tape Speed
Adjustment
Sample Value of Wow and Flutter: 0.3% or less W. RMS (JIS)
(WS-48B)
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