Sony HCD-DR3 Service Manual page 11

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3. Mode: Playback
test tape
SPEAKER
P-4-A100
terminal (JK703)
(10kHz, –10dB)
(L-CH)
L
R
Waveform of oscilloscope
in phase 45˚
good
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 8)
Adjustment screws
PB head (deckA)
or REC/PB head (deck B)
oscilloscope
SPEAKER
terminal (JK703)
(R-CH)
90˚ 135˚ 180˚
wrong
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
test tape
WS-48B
(3kHz, 0dB)
set
SPEAKER
terminal (JK703)
2. Adjust the SFR601 so that the frequency counter reads 3,000
Hz ± 90Hz.
Adjustment Location: FRONT board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
Adjustment Location: FRONT board
[FRONT BOARD] — Component side —
SFR601
TAPE SPEED
frequency counter
+
–
IC603
CN603
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