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32
HCD-ZUX9
TUNER SECTION
[FM TUNE LEVEL CHECK]
Procedure:
1. Turn the power on.
2. Input the following signal from Signal Generator to FM
antenna input directly.
* Carrier Freq : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
: 75 kHz
Modulation : 1 kHz
ANT input
: 35 dBu (EMF)
Note:
Please use 75 ohm “coaxial cable” to connect SG and the set. You
cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confirm “TUNED” is lit on the display for A, B and C signals.
The mark of “TUNED” means “The selected station signal is
received in good condition.”
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
set
test tape
P-4-A100
(10 kHz,
−
10 dB)
oscilloscope
V
H
waveform of oscilloscope
in phase 45
90
135
180
good
wrong
JACK board
PHONES jack
(J904)
forward
DECK A
DECK B
FM signal generator
OUT (75
Ω
)
SET
0 dB = 1
µ
V
Summary of Contents for HCD-ZUX9
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