Sony HCD-DR3 - Page 11

11
test tape
P-4-A100
(10kHz, –10dB)
SPEAKER
terminal (JK703)
(L-CH)
SPEAKER
terminal (JK703)
(R-CH)
oscilloscop
e
L
R
Waveform of oscilloscope
in phase 45˚ 90˚ 135˚ 180˚
good wrong
test tape
WS-48B
(3kHz, 0dB)
set
SPEAKER
terminal (JK703)
frequency counte
r
+
–
IC603
CN603
SFR601
TAPE SPEED
Adjustment screws
PB head (deckA)
or REC/PB head (deck B)
3. Mode: Playback Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
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 —
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 8)