Sony hcd-grx40av Service Manual page 15

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3 7 63 1515 0
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
in phase
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 9)
TE
L 13942296513
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.
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SPEAKER
terminal (JK401)
(L-CH)
oscilloscope
L
R
SPEAKER
terminal (JK401)
(R-CH)
Waveform of oscilloscope
45˚ 90˚ 135˚
good wrong
Adjustment screws
REC/PB head (deck B)
or PB head (deck A)
x ao
y
i
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8
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
test tape
WS-48B
(3kHz, 0dB)
2. Adjust the SFR601 so that the frequency counter reads 3,000
Hz ± 90Hz.
180˚
Adjustment Location: MAIN board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[FLD BOARD] — Component side —
Tape Speed
Q Q
3 6 7 1 3
u163
.
2 9 9 4 2 8
frequency counter
set
SPEAKER
terminal (JK401)
1 5 0 5 8 2 9 9 4
SFR601
CN604
m
co
9 9
+
–
2 8 9 9
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