Sony TCS-30D Service Manual ▷ View online
– 9 –
SECTION 5
ELECTRICAL ADJUSTMENTS
Tape Speed Adjustment
Setting:
Procedure:
– Normal –
1. Set the
– Normal –
1. Set the
[REC TIME]
switch (S601) to
[NORMAL]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV601 so that the frequency counter reading becomes
3. Adjust RV601 so that the frequency counter reading becomes
3,000 Hz.
Specified Value: 2,970 to 3,030 Hz
4. Check that deflection of the frequency counter reading between
the beginning and the end of tape is within 1.5% (approx. 45
Hz).
Hz).
– Double (1/2 SPEED) –
1. Set the
1. Set the
[REC TIME]
switch (S601) to
[DOUBLE]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV602 so that the frequency counter reading becomes
3. Adjust RV602 so that the frequency counter reading becomes
1,500 Hz.
Specified Value: 1,485 to 1,515 Hz
Adjustment Location:
PRECAUTION
1. Specified voltage
: 2.5 V (DC)
2. Setting
SPEED CONTROL dial
: center click
0 dB=0.775 V
Test Tape
Record/Playback Head Azimuth Adjustment
Setting:
Mode: playback (normal speed)
Mode: playback (normal speed)
Procedure:
1. Turn the adjustment screw to obtain the maximum reading on
1. Turn the adjustment screw to obtain the maximum reading on
level meter.
Note:
Several peaks may appear, but take the maximum.
2. After the adjustment, lock the adjustment screw with suitable
locking compound.
Adjustment Location:
Type
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Head Azimuth Adjustment
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
P-4-A063
(6.3 kHz, –10 dB)
US: 32
Ω
Except US: 16
Ω
set
i
jack (J301)
+
–
–
adjustment screw
Press the N
button.
button.
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
set
i
jack (J301)
–
+
US: 32
Ω
Except US: 16
Ω
RV602
Tape Speed Adjustment
(Double)
J301
RV601
Tape Speed Adjustment
(Normal)
J302
– MAIN BOARD (Conductor Side) –
TCS-30D
– 11 –
– 12 –
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM
• SIGNAL PATH
: PB
: REC
: MIC
R-CH: Same as L-CH.
L-CH
R-CH
R-CH
HE901
(ERASE)
HRP901
(REC/PB)
PB PREAMP, MIC AMP, REC AMP
IC301
3
8
16
5
10
PB IN
A
MIC
A
REF
10
REC DRV
OUT A
9
REC DRV
IN A
LINE
OUT A
PB PREAMP
REF
MIC
AGC
ATT
LINE
AMP
AMP
AGC
DET
REC
AMP
REC/PB
SWITCH
HEADPHONES
AMP
1
S301-4
(REC/PB)
REC
PB
S301-2
(REC/PB)
REC
PB
REC BIAS
SWITCH
Q102
B+
R-CH
2
GCA
MIC
AMP
R-CH
MIC901
MIC
PULG IN POWER
J302
PB/REC
SW
+
DISCHARGE
SWITCH
Q301
VOL
MUTING
RV301
IN A
OUT
A
IN A
IN B
MUTE
HEADPHONES AMP
IC302 (1/2)
R-CH
+
INV
OUT
INVERTER
AMP
OUT
B
OUT
A
SP901
(SPEAKER)
6
1
8
11
3
RIPPLE
FILTER
POWER
AMP
POWER
AMP
SPEAKER AMP,
RIPPLE FILTER
IC303
REF IN
REF CNTL
STANDBY
J301
i
BATT B+
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
2PCS. 3V
CN301
DC IN 3V
–
+
S303
(POWER)
17
RIPPLE FILTER
Q308
MIC B+
STANDBY
SWITCH
Q304
S301-3
(REC/PB)
REC
PB
B+
PULG IN/OUT
MUTE SWITCH
Q307-1
SPEAKER AMP
SWITCHING
Q306
Q307-2
PAUSE
S302
BATT
D401
ON
OFF
+
MUTE PULSE
GENERATOR
(PAUSE ON)
Q309
+
MUTE PULSE
GENERATOR
(PAUSE OFF)
(PAUSE OFF)
Q310
MUTING SWITCH
Q302, 303
D301
11
13
VR
BASE
PW
RIPPLE FILTER
IC302 (2/2)
RIPPLE
FILTER
POWER
ON/OFF
12
RIPPLE FILTER
Q305
13
13
+
MOTOR B+
CAPSTAN/REEL
MOTOR DRIVE
IC601
3
4
VOUT
V+
VCONT
8
VSENS
MOTOR
DRIVER
DRIVER
TAPE SPEED
(DOUBLE)
RV602
THP601
S301-1
(REC/PB)
REC
PB
REC TIME
S601
NORMAL
DOUBLE
TH602
TAPE SPEED
(NORMAL)
RV601
SPEED
CONTROL
RV603
M
M
M901
(CAPSTAN/REEL)
15
6
TCS-30D
C318
C335
R214
C317
R403
R302
R203
R205
R105
R202
R102
R103
R301
R402
R111
R211
R303
R310
R334
C302
C303
C212
C213
C112
C214
C311
C113
C321
C208
C209
C203
C204
R314
R337
R339
R335
R341
R336
R603
R608
R607
R610
R601
R604
C114
C345
C344
C601
C329
C346
C350
C340
C207
C104
C107
C205
C105
C103
C108
C348
C324
C109
C301
C111
C210
C110
C304
C320
C211
R212
R213
R112
R113
R332
R333
R308
R207
R206
R107
R338
R106
R108
R109
R342
R208
R209
R331
R307
R114
Q102
B
C
E
Q202
B
C
E
Q301
B
C
E
D301
A
K
+ C360
+
C334
+
C342
+
C331
+
C332
+
C337
+
C341
+ C603
+
C333
B
C
E
C
E
B
C
E
C
E
IC301
1
12
24
13
IC303
1
9
18
10
IC302
1
8
9
16
Q304
Q306
Q305
BC
E
B
C
E
Q308
IC601
1
4
8
5
RV602
THP601
TH602
MAIN BOARD
(CONDUCTOR SIDE)
DC IN 3V
+
–
CN301
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
2PCS. 3V
M901
(CAPSTAN/REEL)
RED
BLK
M
M
SP901
(SPEAKER)
BLK
RED/BLK
BLK/RED
RED
1
3
BLK
1-675-339-
(11)
11
S303
(POWER)
Q307
1B
E
2B
1C
2C
BLK
RED
MIC901
MIC
BLU
WHT
RED
HRP901
(REC/PB)
R-CH
L-CH
TAP201
(US)
TAP202
TAP101
TAP102
–1
–2
RV301
VOL
D401
BATT
J301
i
J302
MIC
EC
B
Q302
R312
R306
R313
R602
R309
R204
R104
C202
C102
R311
R305
R304
+ C326
+
C315
+
C327
Q310
Q303
Q309
B C E
B C E
B
C
E
MAIN BOARD
(COMPONENT SIDE)
C602
+
C323
+
C314
+
C308
+
C305
+
C309
+
C206
+
C106
+
C310
+
C338
+
C306
+
C312
+
C313
+
C307
+
C319
+
C316
+
RV603
SPEED CONTROL
1-675-339-
(11)
11
SWITCH BOARD
1-675-340-
11
BLK
RED
1
3
BLK
05
1
A
2
3
4
5
6
7
8
9
10
11
12
13
B
C
D
E
F
G
H
I
J
S301 (REC/PB) REC PB
–1
–2
–3
–4
HE901
(ERASE)
RV601
S302
PAUSE
OFF
ON
DOUBLE
NORMAL
S601
REC TIME
C390
– 13 –
– 14 –
6-2.
PRINTED WIRING BOARDS
• Semiconductor
Location
Ref. No.
Location
D301
D-11
D401
B-12
IC301
D-10
IC302
D-12
IC303
F-10
IC601
H-9
Q102
B-9
Q202
C-9
Q301
C-11
Q302
C-2
Q303
D-2
Q304
F-11
Q305
E-12
Q306
E-12
Q307
E-12
Q308
G-9
Q309
D-2
Q310
E-2
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
z
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
TCS-30D
– 15 –
– 16 –
6-3.
SCHEMATIC DIAGRAM
•
See page 17 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 3 V and fed with regulated dc power
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : PB
(
no mark : PB
(
) : REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Signal path.
E
: PB
a
: REC
N
: MIC
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