34
HCD-DFLX9W
SP
REALY
baord
CN804
set
test tape
P-4-A100
(10 kHz, –10 dB)
pin
5
oscilloscope
L-CH
R-CH
V
H
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
pin
3
pin
2
L
R
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
SP RELAY board
CN804 Pin
3
(GND)
SP RELAY board
CN804
Pin
2
(L-CH)
Pin
5
(R-CH)
frequency counter
attenuator
set
DSP board
VIDEO/SAT jack (J701)
1) 315 Hz
2) 10 kHz
50 mV (
−
23.8 dB)
600
Ω
blank tape
CN-123
AF OSC
+
–
set
recorded
portion
SP RELAY board
CN804 Pin
3
(GND)
SP RELAY board
CN804
Pin
2
(L-CH)
Pin
5
(R-CH)
level meter
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
[CD SYNC HI-DUB]
simultaneously.
To release from the test mode, press the
I/
1
button.
Mode:
Playback
1. Insert the WS-48B into the deck B.
2. Press the
hH
button on the deck B.
3. Press the
[CD SYNC HI-DUB]
button in playback mode.
Then at HIGH speed mode.
4. Check so that frequency counter reads 6,000
±
180 Hz.
5. Press the
[CD SYNC HI-DUB]
button.
Then back to NORMAL speed mode.
6. Check so that frequency counter reads 3,000
±
90 Hz.
Check Location: SP RELAY board
Sample Value of Wow and Flutter: 0.3% or less W. RMS (JIS)
(WS-48B)
REC BIAS ADJUSTMENT DECK B
Procedure:
In the MC test mode, the “REC memory mode” is convenient for
this adjustment. In the “REC memory mode” , when the REC starts
the input signal FUNCTION is switched to VIDEO automatically.
When the REC stops, the tape returns near to the recording start
position.
1. Press
[VIDEO/SAT]
button to select VIDEO. (This step is not
necessary if the above test mode has already been set)
2. Insert a tape into deck B.
3. After press
[REC PAUSE/START]
button, press
[REC PAUSE/
START]
button, then rec ording start.
4. Mode: Record
5. Mode: Playback
6. Confirm the playback signal recorded in step 3 becomes
adjustable level as follows.
If these levels are not adjustable level, adjust the RV2 (L-CH)
and RV52 (R-CH) on the SP RELAY board to repeat steps 4
and 5.
Adjustable level: Playback output of 315 Hz to playback output
of 10 kHz:
±
1.0 dB
Adjustment Location: SP RELAY board
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