Sony HD-FLX9W Service Manual page 34

HCD-DFLX9W
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3. Mode: Playback
test tape
P-4-A100
(10 kHz, –10 dB)
pin 2
L-CH
pin 3
SP
L
REALY
baord
CN804 R
set
R-CH
pin 5
waveform of oscilloscope
in phase 45 °
good
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
TE
L 13942296513
forward
reverse
TAPE SPEED CHECK 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.
I/1
, [DISPLAY] and [CD SYNC HI-DUB]
2. Press three buttons
x
simultaneously.
To release from the test mode, press the
Mode: Playback
www
SP RELAY board
test tape
CN804
WS-48B
Pin 2 (L-CH)
(3 kHz, 0 dB)
Pin 5 (R-CH)
.
set
SP RELAY board
CN804 Pin 3 (GND)
34
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oscilloscope
H
V
90 ° 135 ° 180 °
wrong
button.
I/1
x ao
frequency counter
y
i
+
–
http://www.xiaoyu163.com
8
1. Insert the WS-48B into the deck B.
2. Press the button on the deck B.
hH
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)
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
DSP board
Q Q VIDEO/SAT jack (J701)
3 6 7 1 3
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
5. Mode: Playback
SP RELAY board
CN804
recorded
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
u163
.
2 9 9 4 2 8
(WS-48B)
1 5 0 5 8 2 9 9 4

50 mV ( − 23.8 dB)


blank tape
CN-123
600 Ω
set
level meter
+
–
m
co
9 9
2 8 9 9