Sony HCD-FL5D Service Manual page 35

Dvd deck receiver
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3. Mode: Playback
test tape
P-4-A100
oscilloscope
(10 kHz, –10 dB)
pin 2
L-CH
pin 3
SP
L
REALY
H
V
baord
CN804
R
set
R-CH
pin 5
waveform of oscilloscope
in phase 45 °
90 ° 135 ° 180 °
good
wrong
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
forward
reverse
TAPE SPEED ADJUSTMENT DECK B
Note: 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]
button.
Procedure:
1. Press
button to turn the set ON.
?/
1
[DISPLAY]
[CD SYNC HI-DUB]
2. Press three buttons
,
and
x
simultaneously.
To release from the test mode, press the
button.
?/
1
HCD-FL5D
Mode: Playback
SP RELAY board
test tape
CN804
WS-48B
frequency counter
Pin 2 (L-CH)
(3 kHz, 0 dB)
Pin 5 (R-CH)
+
set
SP RELAY board
CN804 Pin 3 (GND)
1. Insert the WS-48B into the deck B.
2. Press the hH button on the deck B.
[CD SYNC HI-DUB]
3. Press the
button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the SW board so that frequency counter reads
6,000 ± 180 Hz.
[CD SYNC HI-DUB]
5. Press the
button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the SW board so that frequency counter reads
3,000 ± 90 Hz.
Adjustment Location: SW 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.
[MD $VIDEO%]
1. Press
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.
[REC PAUSE/START]
[REC
3. A f t e r p r e s s
button, press
PAUSE/START]
button, then rec ording start.
4. Mode: Record
DSP board
MD (AUDIO) (J701)
1) 315 Hz
50 mV (–23.8 dB)
2) 10 kHz
AF OSC
blank tape
CN-123
600 Ω
attenuator
set
5.
Mode: Playback
SP RELAY board
CN804
recorded
level meter
Pin 2 (L-CH)
portion
Pin 5 (R-CH)
+
set
SP RELAY board
CN804 Pin 3 (GND)
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
Page 35

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