28
HCD-J300
4.
After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
3.
Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
oscilloscope
set
Waveform of oscilloscope
in phase
45
°
90
°
135
°
180
°
good
wrong
GND
R-ch
L
R
SJ301
SPEAKER
Output Terminal
6
Ω
6
Ω
Record Level Check
Procedure:
1.
Press FUNCTION button to select ANALOG IN. (This step
is not necessary if the above test mode has already been set.)
2.
Insert a tape into deck, press the
z
REC (TAPE) button, and
then press the
X
(TAPE) button to start recording.
3.
Mode: Record
Tape Speed Check
frequency
counter
6
Ω
4.
Mode: Playback
5.
The playback output level should be –4.5 ±3 dB (60 Hz),
1 ±3 dB (8 kHz) and –3 ±3 dB (10 kHz).
AF OSC
PJ301
ANALOG IN
1) 60 Hz
2) 5 kHz
3) 10 kHz
blank tape
CS-123
set
attenuator
600
Ω
109 mV (–17 dB)
recorded
position
level meter
set
6
Ω
SJ301
SPEAKER
(Top view)
Adjustment point
2.
Insert the WS-48B into deck.
3.
Press the
Y
button of deck.
4.
Check the reading of frequency counter becomes 3000 ± 90
Hz.
Sample Value of Wow and flutter
W.RMS (JIS) less than 0.35%
(test tape: WS-48B)
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TEL 13942296513 QQ 376315150 892498299
