DOWNLOAD Sony TCS-60DV Service Manual ↓ Size: 5.4 MB | Pages: 23 in PDF or view online for FREE

Model
TCS-60DV
Pages
23
Size
5.4 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
tcs-60dv.pdf
Date

Sony TCS-60DV Service Manual ▷ View online

— 8 —
— 8 —
SECTION 4
ADJUSTMENTS
4-2.
ELECTRICAL ADJUSTMENT
1. Perform adjustments on the following conditions unless
otherwise specified.
• Switches and controls positions
VOL knob ···························································· Maximum
SPEED CONTROL knob ······················· Mechanical center
V•O•R switch ································································ OFF
REC TIME switch ···················································· Normal
Test tape
Tape Speed Adjustment
Procedure :
Mode : Playback (FWD)
Adjust RV602 (standard)/RV603 (double speed) until the frequency
counter reading
becomes 3,000 Hz at the standard mode and 1,500 Hz at the double
speed mode.
Specification Value :
Frequency difference between the beginning and the end of the
tape should be within 1% (30Hz).
Upon completion of adjustments, select the REV playback mode
and check that the measurement value is within the specifications.
Adjustment Location :
Test Tape
WS-48A
Used for
Tape speed adjustment
Signal
3kHz, 0dB
4-1. MECHANICAL ADJUSTMENT
PRECAUTION
1.
Clean the following parts with a denatured-alchool-moistened
swab:
record/playback/erase head pinch roller
head
rubber belts
capstans
idlers
2.
Demagnetize the record/playback/erase head with a head
demagnetizer. (Do not bring the head demagnetizer close to
the erase head.)
3.
Do not use a magnetized screwdriver for the adjustments.
4.
After the adjustments, apply suitable locking compound to the
parts adjusted.
5.
Unless specified otherwise, use a specified voltage (3.0V) to
perform the adjustments.
Torque Measurement
Meter Reading
20 – 35g•cm
0.28 – 0.48 oz•inch
0.5 – 5.0g•cm
0.007 – 0.07 oz•inch
20 – 35g•cm
0.28 – 0.48 oz•inch
0.5 – 5.0g•cm
0.007 – 0.07 oz•inch
more than 40g•cm
more than 0.5 oz•inch
Mode
FWD
FWD
back tension
FWD
FWD
back tension
FF
REW
Torque Meter
CQ-102C
CQ-102RC
CQ-201B
0dB = 0.775V
16 
set
Headphone jack(J303)
+
test tape 
WS-48A
(3kHz, 0dB)
digital frequency
counter
RV602(NORMAL)
RV603(HIGH)
Digital frequency counter
2,970 – 3,030Hz
1,485 – 1,515Hz
Tape speed
RV602(Normal)
RV603(High)
TCS-60DV
— 9 —
— 10 —
5-1.  BLOCK DIAGRAM
+
MIC901
MIC902
<>
<>
IN-4
IN-6
+
L
R
STEREO
Flat Mic
24
6
+
+
9
8
21
23
10
20
+
+
13
17
J301
MIC
(PLUG IN POWER)
IC301
MIC AMP
2
MIC
GCA
AMP
LINE
8
9
10
3
PB
REC
17
23
+
MIC
GCA
AMP
LINE
15
22
PB
16
REC
L CH
R CH
L CH
R CH
FWD
REV
S303(1/4)
FWD
REV
S303(2/4)
FWD
REV
1
REF
S302(2/4)
BIAS
OSC
Q301
REC B+
S601(1/2)
REC TIME
NORMAL
HIGH
HIGH
RV301(1/2)
RV301(2/2)
VOL
VOL
7
+
+
8
5
6
1
3
IC101
SPEAKER AMP
7
+
+
8
5
6
1
3
IC201
SPEAKER AMP
IC305
REC/PLAY
PRE AMP
1
16
IN (L)
IN (R)
SP901
(SPEAKER L)
SP902
(SPEAKER R)
7
10
OUT (L)
OUT (R)
J303
SPEAKER AMP B+
(FOR IC101,201)
B+
REC B+
REGULATOR
IC303
Vcc
7
S302(1/4)
12 BASE
Vcc
14
RIPPLE
FILTER
S302(3/4)
13
PB/
REC
Q302
5
MUTE
MUTE
Q303
MUTE
SWITCH
MUTE
SWITCH
Q307
Q308
HEADPHONE AMP
IC304
REC B+
S303(3/4)
FWD
REV
ERASE
(FWD)
ERASE
(REV)
S501
V  O  R
DIR
DIR
DIR
REC/PLAY
REC
PLAY
PLAY
REC
REC
PLAY
D502
REC
POWER
LED
SWITCH
Q504
Q505
VOICE
MIRROR
Q502,503
D501
LED
SWITCH
Q703
18
17
OUT-4
OUT-5
D503
LED
SWITCH
IC502
B+
5
1 IN
RCV TIME
7
OUT 1
4 IN-1
SWITCH
Q501
HIGH
LOW
OFF
6 OUT 2
IC501
SWITCH Q701
B+
S701
20
21
OUT-2
OUT-1
MOTOR
CONTROL
Q704
19
11
WAVE FORM
DETECT
LOGIC
REF.VOLTAGE
CURRENT
DETECT
PRE DRIVER
20
1
2
U
V
W
B+
M601
(CAPSTAN/REEL MOTOR)
12
RV602
S601(2/2)
NORMAL
RV603
13
IC601
MOTOR SERVO
RV601
SPEED
CONTROL
11 IN-8
S303(4/4)
FWD
DIR
REV
S302(4/4)
REC/PLAY
PLAY
REC
10 IN-7
SWITCH
Q708
B+
PH701
(TAPE END DET.)
5
6
8
IN-2
IN-3
IN-5
S702
(FWD/RCV)
S703
S704
DIR
REW/FF
PAUSE
RESET
Q705,706
3
CL
MOTOR
BRAKE
SWITCH
Q601,602
Q603,604
19
OUT-3
SWITCH
Q707
7
9
B+
REC B+
MUTE
SWITCH
Q304,306
J302
IC702
REG
B+
SYSCON B+
(FOR IC701)
MOTOR SERVO B+
(FOR IC601,M601)
DRY BATTERY
SIZE "AA"
IEC DESIGNATION R6P
2PCS. 3V
(
)
DC IN 3V
23
CONT
D-D CONV.
OSC
Q702
T701
IC701
SYSTEM CONTROL
16
T301
S301
(POWER)
SIGNAL PATH
REC:
PLAY:
HRPE901
BATTERY
DETECT
TAPE SPEED
TAPE SPEED
. .
V  O  R
. .
REC TIME
REC/PLAY
REC/PLAY
SECTION 5
DIAGRAMS
TCS-60DV
— 11 —
— 12 —
— 13 —
— 14 —
5-2.  SCHEMATIC DIAGRAM
1
2
A
B
C
D
E
F
G
H
I
J
K
L
M
O
P
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
• Waveform
1
TP45 REC DOUBLE MODE
TP45 REC NORMAL MODE
1
52 kHz
10 
µ
sec/div
5 V/div
10 
µ
sec/div
10 V/div
µ
sec/div
1 V/div
52 kHz
IC303 
3
  LX REC
2
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
%
: indicates tolerance.
C
: panel designation.
U
: B+ Line.
H
: adjustment for repair.
• Power voltage is dc3 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : REC/PB
(
) : REC
<
> : PB
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: REC
a
: PB
TCS-60DV
— 15 —
— 16 —
— 17 —
— 18 —
— 19 —
5-3. PRINTED WIRING BOARD – MAIN SECTION –
1
2
A
B
C
D
E
F
G
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
Through hole is omit.
• b
: Pattern from the side which enables seeing.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(SIDE A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(SIDE B)
the parts face are indicated.
Ref. No.
Location
D301
B-2
D302
B-20
D303
C-23
D304
C-22
D305
E-13
D306
C-20
D307
B-3
D308
C-9
D701
B-9
D702
B-14
IC101
A-5
IC201
B-17
IC301
D-6
IC303
B-3
IC304
B-19
IC305
D-18
IC501
A-15
IC601
E-14
IC701
C-14
IC702
B-15
Q101
C-6
Q201
B-6
Q301
D-4
Q302
A-19
Q303
B-18
Q304
C-3
Q305
C-2
Q306
B-2
Q307
D-22
Q308
A-1
Q501
B-15
Q502
C-6
Q503
B-7
Q601
D-11
Q602
E-11
Q603
D-11
Q604
C-11
Q701
B-15
Q702
B-9
Q703
D-15
Q704
C-15
Q705
B-13
Q706
B-13
Q707
D-14
Q708
B-7
• Semiconductor
Location
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