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21
HCD-RG444
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
Record/Playback/Erase Head (Deck B)
set
test tape
P-4-A100
(10 kHz, – 10 dB)
R-CH
oscilloscope
L-CH
R-CH
V
H
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
AMP board
SPEAKER terminal (JK441)
L-CH
Tape Speed Check
DECKA DECKB
Mode: Playback
1. Insert the WS-48B into the deck.
2. Press the
H
button on the deck.
3. Confirm that the frequency counter reads 3,000 ± 90 Hz.
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)
(WS-48B)
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
AMP board
SPEAKER terminal (JK441)
L-CH, R-CH
frequency counter
reverse
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