Sony HCD-ZUX9 Service Manual - Page 32

Tuner,

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HCD-ZUX9 3. Mode: Playback test tape P-4-A100 JACK board (10 kHz, −10 dB) PHONES jack oscilloscope (J904) VH set TUNER SECTION 0 dB = 1 µV [FM TUNE LEVEL CHECK] FM signal generator SET OUT (75 Ω) waveform of oscilloscope in phase 45 90 135 180 good wrong 4. After the adjustments, apply suitable locking compound to the pats adjusted. Adjustment Location: Playback Head (Deck A). Record/Playback/Erase Head (Deck B). DECK A forward DECK B 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." 32

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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 V