Read Sony MHC-S9D / TC-S9 Service Manual online
10
TC-S9
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
so that outputs match within 1dB of peak.
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).
Note:
Use following buttons in the test mode.
no mark : Button of Tape unit (TC-S9)
*1
: Button of amplifier unit (TA-S9D)
*2
: Button of DVD/video CD/CD unit (DVP-S9)
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
mode.
In the test mode, the tape speed is high during pressing the
[HI-DUB]
button.
Procedure:
1. Turn the power switch on.
2. While pressing the both
1. Turn the power switch on.
2. While pressing the both
[PLAY MODE]
*
2
and
[ ]
*
2
buttons,
press the
[DISC 3]
*
2
button.
(The “GROOVE” on the fluorescent indicator tube display
while in the test mode.)
To exit from the test mode, press the
while in the test mode.)
To exit from the test mode, press the
?/1
*
1
button.
Mode: Playback
1. Insert the WS-48B into the deck B.
2. Press the N button on the deck B.
3. Press the
2. Press the N button on the deck B.
3. Press the
[HI-DUB]
button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board so that frequency
counter reads 6,000
±
180 Hz.
5. Press the
[HI-DUB]
button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000
±
90 Hz.
Adjustment Location: LEAF SW board
Sample Volue of Wow and Flutter: 0.3% or less W. RMS
(WS-48B)
Playback Level Adjustment
DECK A DECK B
Procedure:
Mode: Playback
Mode: Playback
1. Confirm that level difference between the channels is with
±
0.5 dB.
2. After check, adjust the following RVs.
Deck A is RV302 (L-CH), Deck B is RV303 (L-CH) so that
adjustment within adjustment level as follows.
adjustment within adjustment level as follows.
Adjustment Level:
MD OUT jack (J601) PB level: 334.4 to 748.7 mV
(–6.8
±
0.5 dB)
Adjustment Location: MAIN board
Screw
position
position
L-CH
peak
peak
within
1dB
1dB
Output
level
level
L-CH
peak
peak
R-CH
peak
peak
within
1dB
1dB
Screw
position
position
R-CH
peak
peak
set
test tape
P-4-A100
(10 kHz, –10 dB)
P-4-A100
(10 kHz, –10 dB)
oscilloscope
L-CH
R-CH
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
ST-S9
MD OUT jack
(J601)
(J601)
+
–
–
+
–
–
set
test tape
WS-48B
(3 kHz, 0 dB)
WS-48B
(3 kHz, 0 dB)
frequency counter
ST-S9
MD OUT jack
(J601)
(J601)
set
test tape
P-4-L300J
(315 Hz, 0 dB)
P-4-L300J
(315 Hz, 0 dB)
ST-S9
+
–
–
level meter
MD OUT jack
(J601)
(J601)
reverse
forward
x
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