Sony Pressman TCM-50DV User manual
– 1 –
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MT-50-30
SERVICE MANUAL
US Model
Canadian Model
AEP Model
E Model
Tourist Model
TCM-50DV
CASSETTE-CORDER
Recording system
2-track 1 channel monaural
Tape speed
4.8 cm/s or 2.4 cm/s
Frequency range
250 - 6,300 Hz using normal (TYPE I) cassette (with REC TIME switch
at “NORMAL”)
Speaker
Approx. 3.6 cm (1 7/16 in.) dia.
Power output
250 mW (at 10% harmonic distortion)
Input
Microphone input jack (minijack) sensitivity 0.2 mV for 3 kilohms or
lower impedance microphone
Output
Earphone jack (minijack) for 8 - 300 ohms earphone
Variable range of the tape speed
From approx. +25% to –15% (with REC TIME switch at “NORMAL”)
Power requirements
3 V DC batteriesAA (R6) ×2/External DC 3 V power sources
Battery life(Approx. hours) (EIAJ*)
Sony alkaline LR6 (SG) Sony R6P (SR)
Playback 9.5 1.5
Recording 10.5 2
* Measured value by the standard of EIAJ (Electronic Industries
Association of Japan). (Using a Sony HF series cassette tape)
SPECIFICATIONS
Dimensions (w/h/d) (inci. projecting parts and controls)
Approx. 88.7 ×115.3 ×37.2 mm (3 1/2 ×4 5/8 ×11/2 in.)
Mass
Approx. 250 g (8.9 oz.)
Supplied accessories
Size AA(R6) batteries (2) (Tourist model only)
Earphone (1) (Tourist model only)
Design and specifications are subject to change without notice.
MICROFILM
Ver 1.1 2000. 08
With SUPPLEMENT-1
(9-926-919-81)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 2 –
TABLE OF CONTENTS
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270˚C during
repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
1. SERVICING NOTE .....................................................3
2. GENERAL
Operating the Unit ................................................................... 4
3. DISASSEMBLY
3-1. Cabinet, Cassette Lid Assy ................................................. 6
3-2. MAIN Board, Cassette Machanism .................................... 7
3-3. Belt ...................................................................................... 8
3-4. Head .................................................................................... 8
3-5. Motor, DC ........................................................................... 9
3-6. Note for Installation of Main Board.................................... 9
4. MECHANICAL ADJUSTMENTS ............................10
5. ELECTRICAL ADJUSTMENTS .............................10
6. DIAGRAMS
6-1. Block Diagram .................................................................. 11
6-2. Printed Wiring Board –Main Section–.............................. 13
6-3. Schematic Diagram –Main Section–................................. 15
6-4. Printed Wiring Board –Panel Section– ............................. 17
6-5. Schematic Diagram –Panel Section– ................................ 18
6-6. IC Pin Description............................................................. 20
7. EXPLODED VIEWS
7-1. Case Section ...................................................................... 21
7-2. Panel Section ..................................................................... 22
7-3. Mechanism Deck Section-1 .............................................. 23
7-4. Mechanism Deck Section-2 .............................................. 24
8. ELECTRICAL PARTS LIST ....................................25
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 3 –
TP30 TP30
TP20
TP20
S101
PB REC
S103
(POWER)
SECTION 1
SERVICING NOTE
1-1. SERVICE MODE
Mode to allow the mechanical parts to operate with the main board
open.
This set uses the photo reflector PH701 to detect the rotation of the
idler gear. PH701 is on the main board and so removal of the main
board does not allow the set to detect the rotation of the idler gear.
This makes motor control impossible which prevents normal
operation.
When repairing the set as energized with the main board removed,
proceed as follows:
1. Setting
1) Remove the cabinet (rear) (refer to the Disassembly) and open
the main board.
2) Apply a trapezoidal of 10 to 100 Hz (at 1.3V) from oscillator to
TP20. (Connect the ground to TP30.)
3) Supply DC 3.0 V to the positive and negative terminals of the
battery with a stabilized power supply.
2. FF mode
1) Apply a trapezoidal to hall sensor TP20.
2) Press the FF key.
3) Turn on the S103 (POWER) switch.
3. REW mode
1) Apply a trapezoidal to hall sensor TP20.
2) Press the REW key.
3) Turn on the S103 (POWER) switch.
4. PLAY mode
1) Apply a trapezoidal to hall sensor TP20.
2) Press the PLAY key.
3) Change over the S101 (REC/PB) switch to PB side.
4) Turn on the S103 (POWER) switch.
5. REC mode
1) Apply a trapezoidal to hall sensor TP20.
2) Press the REC key.
3) Change over the S101 (REC/PB) switch to REC side.
4) Turn on the S103 (POWER) switch.
– main board (conductor side) –
– main board (component side) –
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 6 –
SECTION 3
DISASSEMBLY
•The equipment can be removed using the following procedure.
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (REAR), CASSETTE LID ASSY
1
two screws
(screw (B1.7x9), tapping)
2
two screws
(screw (B1.7x9), tapping)
3
two claws
4
cabinet (rear)
5
LED flexible boar
d
6
shaft (A), stopper
7
screw, ornamental
8
screw, ornamental
9
cassette lid assy
Cabinet (rear),
Cassette Lid Assy Mechanism Deck,
Main board Belts
Head
Motor, DC
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 7 –
3-2. MACHANISM DECK, MAIN BOARD
2
mechanism deck,
MAIN board
1
three screws
(screw (IB lock))
3
Remove the four solders.
4
head flexible board
5
two screws
(screw (M1.4), toothed lock)
6
MAIN board
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 8 –
3-3. BELTS
3-4. HEAD
1
belt (motor)
2
belt (flywheel)
3
belt (counter)
belt (motor)
belt (flywheel) belt (counter)
• How to apply the belts
1
two screws
2
head, magnetic
(REC/PB/ERASE)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 9 –
3-6. NOTE FOR INSTALLATION OF MAIN BOARD
Align the knobs of S101, S103 and S701 on the main board with the
claws of the lever (REC) lever (erase proof 2) and lever (REC) of the
mechanism deck respectively, and install the main board.
3-5. MOTOR, DC
3
Remove the four solders.
1
screw (1.4)
2
screw (1.4)
4
Motor, DC
MAIN board
S103
S101
S701
screws (M1.4), toothed lock
mechanism deck lever (PAUSE)
lever (REC)
lever (erase proof 2)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 10 –
test tape
WS-48A
(3 kHz, 0 dB)
set
8
Ω
EAR jack
digital
frequency counte
r
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback/erase head pinch roller
capstan rubber belt
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. The adjustments should be performed with the rated power
supply voltage (1.3 V) unless otherwise noted.
Torque Measurement
Mode Torque Meter Meter Reading
15 – 25 g • cm
FWD CQ-102C (0.21 – 0.35 oz • inch)
FWD less than 2 g • cm
back tension (less than 0.03 oz • inch)
15 – 25 g • cm
REV CQ-102RC (0.21 – 0.35 oz • inch)
REV less than 2 g • cm
back tension (less than 0.03 oz • inch)
more than 50 g • cm
FF, REW CQ-201B (more than 0.69 oz • inch)
SECTION 4
MECHANICAL ADJUSTMENTS
1. REC TIME : NORMAL/FWD ·
Playback WS-48A (tape center part) and adjust RV601 so that
reading on the digital frequency counter becomes 3,000 Hz.
2. REC TIME : DOUBLE/FWD ·
Playback WS-48A (tape center part) and adjust RV602 so that
reading on the digital frequency counter becomes 1,500 Hz.
Specification Value :
Digital Frequency Counter Reading
REC TIME : NORMAL REC TIME : DOUBLE
2,985 to 3,015 Hz 1,485 to 1,515 Hz
3. REC TIME : NORMAL/REV ª
Playback WS-48A (tape center part) and confirm that the
reading on digital frequency counter are between 2,985 to 3,015
Hz.
4. REC TIME : DOUBLE/REV ª
Playback WS-48A (tape center part) and confirm that the
reading on digital frequency counter are between 1,435 to 1,515
Hz.
Adjustment Location :
Tape Speed Adjustment
Procedure :
SECTION 5
ELECTRICAL ADJUSTMENTS
PRECAUTION
•Supplied voltage : DC 3.0 V
•Switch and control position
VOL control : max (10)
MIC SENS switch : free (L or H)
V•O•R switch : free (OFF or ON)
SPEED CONTROL control : mechanical center
TestTape
Type Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
RV602
RV601
–main board (conductor side)–
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 11 – – 12 –
TCM-50DV
6-1. BLOCK DIAGRAM
SECTION 6
DIAGRAMS
SP101
SPEAKER
VOL
RV101
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
2PCS,3V
PULSE
AMP
Q708 SWITCH
Q706, 707
DP CON
OSC
Q702
4
+3V
+3V
TAPE ROTATION DETECTOR
PH701
10
5
8
6
23 22
32
REC/PB
(FWD)
HRPE901
REC/PB/ERASE HEAD
REC/PB
(REV)
BIAS OSC
Q112
ERASE
(FWD)
ERASE
(REV)
1
7
6
5
SWITCH
Q501
OUT1
RECOVERY
TIME CAP
OUT2 IN
NF LEVEL
SWITCH
Q103 NF LEVEL
SWITCH
Q104
VOR
IC501
NF LEVEL
SWITCH
Q105
MIC SENS
S902
H
L
5
1
28
12
7
11
9 11
27
29
3
• Signal path
: TAPE (PB)
: TAPE (REC)
MIC IN
ALC CONT
PRE NF
EQ IN
VREF OUT
REC OUT
AMP
Q102
2
PRE
OUT
REC
IN
POW
IN POW
OUT1
POW
OUT2
1
2
LED CONTROL
Q704
MUTE
Q109
LED CONTROL
Q302,303
MUTE
DRIVE
Q110
SWITCH
Q107,108
R.F
4
21
26
25
OUT
LED
CONTROL
Q301
D903
BATTERY
VOLTAGE
DETECTOR
IC301
21
23
R/P MUTE
R/P SW
MIC VCC
R.F OUT
S101-2
(REC/PB)
PB
REC
PB
REC
S101-1
(REC/PB)
D901
BATT
D902
REC
J102
MIC
+3V
3
V OUT V IN
REG
IC701
24
D701
MOTOR
CONTROL
Q705
DIRECTION
MOTOR
BRAKE SW
Q601 - 604
19
M901
CAPSTAN/REEL
MOTOR
W OUT
V OUT
U OUT
11
2
1
20
13
12
BIAS REF
VOLTAGE
PULSE
DET OPERATION
LOGIC PRE
DRIVER
CURRENT
DET FREQ.
CHARC.
REF VOLTAGE
FOR SPEED CONTROL
DIR
S/S
IN +
OSC
S101-4
(REC/PB)
PB
REC
RV601
TAPE SPEED
REC TIME NORMAL
RV602
TAPE SPEED
REC TIME DOUBLE
REC TIME
S903-2 DOUBLE
NORMAL
REC TIME
S903-1
NORMAL
DOUBLE
ON
OFF
FWD
REV
SWITCH
Q703
IN4
IN6
IN8
SYSTEM CONTROL
IC702
20
17
OUT2
OUT1
OUT5
IN7
CONT
CL
VCC
VDD
IN1
18 19
OUT3
OUT4
MOTOR SERVO
IC601
S102-4
(FWD/REV)
FWD
REV PB
REC
S101-3
(REC/PB)
J101
EAR
+3V
+3V
S103
(POWER)
-+
DC IN 3V
CN101
PRE / POWER AMP
IC101
T701
VREF
SPEED CONTROL
RV603
D702
Q701
OFF ON
S701
PAUSE
+3V
4
T101 Q111
Q101
+3V
S102-3
(FWD/REV)
Q106
MIC901
Flat Mic
V O R
S901
-
+
+
-
+
-
S702
(REW / REVIEW)
S703
(DIR)
S704
(FF / CUE)
IN2
IN3
IN5
S102-2
(FWD /REV)
REV FWD
14
ERROR
AMP
04
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
1-672-148- (11)
11
S702
(REW/REVIEW)
04
(FF/CUE)
SPEED CONTROL
S703
(DIR)
S701
ON
OFF
S101
(REC/PB)
PB REC
REC/PB
ERASE
REC/PB
ERASE
( )
( )
( )
( )
S102 (FWD/REV)
REV FWD
DRY BATTERY
SIZE " AA "
(IEC DESIGNATION R6)
2PCS,3V
HRPE901
REC/PB/ERASE
HEAD
1-672-148- (11)
11
TP20
TP30
1
A
B
C
D
E
F
G
H
I
J
234567891011121314
– 13 – – 14 –
TCM-50DV
Q103 D-9
Q104 D-9
Q105 E-10
Q106 H-2
Q107 F-8
Q108 F-8
Q109 F-9
Q110 F-8
Q111 F-1
Q112 G-3
Q301 F-10
Q302 F-10
Q303 F-10
D701 C-1
D702 D-2
IC101 F-9
IC301 F-10
IC501 E-2
IC601 C-8
IC701 C-1
IC702 C-2
PH701 D-1
Q101 H-10
Q102 D-9
• Semiconductor Location
Ref. No. Location Ref. No. Location Ref. No. Location
Q501 E-2
Q601 B-10
Q602 B-10
Q603 B-9
Q604 B-9
Q701 D-2
Q702 D-1
Q703 D-2
Q704 D-9
Q705 C-2
Q706 B-2
Q707 B-2
Q708 D-1
6-2. PRINTED WIRING BOARD — MAIN SECTION —
Note on PrintedWiring Boards:
•X: parts extracted from the component side.
•®: Through hole.
•b: Pattern from the side which enables seeing.
(Page 17)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
TCM-50DV
– 15 – – 16 –
6-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 19 for IC Block Diagrams.
Note on Schematic Diagram:
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•U: B+ Line.
•H: adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from external power voltage jack.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : PB
( ) : REC
[ ] : FF/REW
• Voltages are takenwith aVOM(Inputimpedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
E: PB
a: REC
(Page 18)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
04
S903
DOUBLE NORMAL
S902
H L
1
18
S901
ON OFF
1-672-149-
(11)
11
1-672-149-
LED
FLEXIBLE
BOARD
1
(11)
11
1
A
B
C
D
E
F
G
H
I
J
23456
– 17 – – 18 –
TCM-50DV
Note on Schematic Diagram:
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
• Signal path.
E: PB
Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•®: Through hole.
•b: Pattern from the side which enables seeing.
6-5. SCHEMATIC DIAGRAM — PANEL SECTION —6-4. PRINTED WIRING BOARD — PANEL SECTION —
(Page 14)
(Page 15)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 19 –
1
13
2
14
3
15
416
5
17
6
18
7
19
8
20
9
10 11
12
PRE DRIVER
DIRECTION
ANTI
LOCKING
PULSE DET
OPERATION LOGIC
OSC
REF VOLTAGE
FOR SPEED CONTROL
BIAS
+
–
CURRENT
DET
TSD
SLEEP
DET
START
DET
FREQ.
CHARC.
ERROR
AMP
FEED
BACK REF
VOLTAGE
VOUT
WOUT
PGND
WB
VB
UB
OSC
COM
GND
RI
UOUT
DR
VCC
LB
FC
OUT
VSP
IN+
VREF
S/S
+
–
+
–
+
–
+
–
21222324252627282930
235
4678910
111 12 13 14 15
16
17
181920
300k
EQ MIC
2.2k
30k
2k
PAUSE
POWER
MIC
VCC
Vref R/P
R, F
GVN
VOX
SPEED
ALC
VOX
20k
REC
12
PRE GND
EQ IN
MIC IN
Vref OUT
MIC VCC
R, F OUT
LED DRIVE
R/P SW
PAUSE
P/R MUTE
GVN CONT
GVN Vref
Vs
GVN GND
GVN OUT
PRE NF
PRE OUT
REG IN
REG OUT
ALC CONT
VOX CONT
VOX DELAY
GNV SPEED UP
AUT STOP CONT
AUT STOP IN
PWR IN
PWR OUT1
PWR GND
PWR OUT2
Vcc
1
2
3
4
8
7
6
5
GND
AMP OUT
GAIN CONT
INPUT VCC
OUTPUT2
OUTPUT1
RECOVERY
TIME CAP
1234
5
6
7
8
+
–
+
–
VOLTAGE UP
CIRCUIT
VREF
NC
VCC
VS
HYS
NC
CT
GND
OUT
• IC Block Diagrams
IC101 LA4168ML
IC501 NJM2072M
IC601 LB1877V
IC301 MM1251M
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 20 –
6-6. IC PIN DESCRIPTION
• IC702 TB2004FN-020 (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 GND — GND
2 OSC — For system clock generation (fosc=3.2 kHz)
3 CL I RESET input
4 IN1 I Pause ON/OFF by PAUSE SW and VOR. “L” : ON, “H” : OFF
5 IN2 I FWD reset by cassette cover open-close. “L” : ON, “H” : OFF
6 IN3 I Direction “L” : ON, “H” : OFF
7 IN4 I REC/PB switch “L” : REC, “H” : PB
8 IN5 I FF/REW “L” : ON, “H” : OFF
9 IN6 I POWER ON/OFF “L” : ON, “H” : OFF
10 IN7 I Photo reflector pulse input for tape end detection.
11 IN8 I FWD/REV switch “L” : FWD, “H” : REV
12 I/O1 — Not used.
13 I/O2 — Not used.
14 OUT8 — Not used.
15 OUT7 — Not used.
16 OUT6 — Not used.
17 OUT5 O LED ON/OFF “L” : ON, “H” : OFF
18 OUT4 O Audio mute “L” : ON, “H” : OFF
19 OUT3 O Motor brake “L” : ON, “H” : OFF
20 OUT2 O Motor direction “L” : FWD, “H” : REV
21 OUT1 O Motor ON/OFF “L” : ON, “H” : OFF
22 VDD — Power supply for CMOS.
23 CONT O Boosting circuit control output
24 VCC — Power supply for bipolar.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 21 –
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
SECTION 7
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
7-1. CASE SECTION
N
N
• Accessories and packing materials are
given in the last of this parts list.
11
1
2
28
34
56
7
8
9
10
12 13
14
15
16
17
18
19
20
21
22
27
23
24
3
26
18
25
MT-50-30
1 X-3376-765-1 CABINET (FRONT) ASSY
2 4-969-980-21 SCREW (IB LOCK)
3 3-315-989-11 SCREW, ORNAMENTAL
4 3-925-231-01 REFLECTOR
5 3-035-304-11 CUSHION
6 3-676-387-00 POLY-SLIDER (DIA.1.6)
7 3-315-384-31 WASHER, STOPPER
*8 X-3370-480-1 TOGGLE ASSY
9 3-311-772-11 SHAFT (A), STOPPER
10 3-032-431-01 KNOB (PAUSE)
11 3-032-432-01 KNOB (DIR)
12 X-3376-766-1 LEVER ASSY, COVERING INDICATION
13 3-328-319-01 STRAP, HAND
14 9-911-815-01 CUSHION
15 3-032-434-01 LID, BATTERY CASE
16 3-032-441-01 SHEET (PICK)
17 3-032-437-11 CABINET (REAR)
18 3-318-203-92 SCREW (B1.7X9), TAPPING
19 3-032-436-01 FOOT (B), RUBBER
20 3-032-435-01 FOOT (A), RUBBER
21 3-925-229-01 TERMINAL, PLUS
22 3-345-648-01 SCREW (M1.4), TOOTHED LOCK
23 A-3021-163-A MAIN BOARD, COMPLETE
24 3-925-230-01 SPRING, BATTERY COIL
25 3-035-304-01 CUSHION
26 3-704-245-42 SCREW (1.4)
27 4-017-441-01 CUSHION (B)
28 3-545-710-01 CUSHION
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 22 –
7-2. PANAL SECTION
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
51
52
53
54
55
56
57
58
59
56
61
62
63
60
64
65
66
67
57
69
70
68
73
74
78
72
75
76
77
54
75
71
MIC901
SP901
51 3-032-423-01 SHEET (WINDOW), ADHESIVE
52 3-032-421-11 WINDOW (CASSETTE)
53 3-032-417-11 PANEL (CASSETTE LID)
54 3-389-523-22 SCREW (IB LOCK)
55 3-032-422-01 SHEET (FRAME), ADHESIVE
56 3-035-251-01 SHEET (FRAME B), ADHESIVE
57 3-035-729-01 CUSHION
58 3-032-427-01 GUIDE, LIGHT
59 3-032-946-01 SHEET (LIGHT GUIDE)
60 3-035-730-01 SHEET
61 3-032-422-01 SHEET (FRAME), ADHESIVE
62 3-032-428-01 KNOB (REC TIME)
63 3-032-420-01 KNOB (V•O•R)
64 3-032-419-01 KNOB (MIC SENS)
65 3-032-418-01 FRAME (CASSETTE LID)
66 3-032-439-01 CUSHION (FRAME)
67 4-017-491-01 CUSHION (B)
68 3-032-424-01 PANEL (MICROPHONE)
*69 1-672-149-11 LED BOARD
70 3-035-305-01 CUSHION
71 1-672-139-11 LED FLEXIBLE BOARD
72 3-032-414-01 CUSHION (MICROPHONE)
73 3-032-425-01 HOLDER (MICROPHONE)
74 3-032-415-01 RETAINER (MICROPHONE)
75 3-318-382-01 SCREW (1.7X3), TAPPING
*76 3-032-430-01 HOLDER (CASSETTE)
77 4-017-441-01 CUSHION (B)
78 3-032-416-01 GROUND, COMPRESSION SPRING (M)
MIC901 1-542-298-11 MICROPHONE, ELECTRET CONDENSER
(Flat Mic)
SP901 1-529-188-11 SPEAKER (3.6cm)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 23 –
7-3. MECHANISM DECK SECTION-1
(MT-50-30)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
101
102
103
104
105
106
107
108
109
110
111
112
113
114
116
117
118
119
120
121
122 123
124
125
126
127
128
129
119
112
122
115
112
A
not supplied
not supplied
M901
HRPE901
(see page 24.)
101 3-925-247-11 BUTTON, FF/CUE
102 3-925-246-11 BUTTON, REW/REVIEW
103 3-925-245-11 BUTTON, PLAY
104 3-032-787-01 BUTTON, REC
105 3-925-248-11 BUTTON, STOP
106 3-924-596-01 SPRING (PINCH-R), TORSION
107 X-3370-380-1 ARM (PINCH-R) ASSY
108 3-924-595-01 SPRING (PINCH-N), TORSION
109 X-3370-379-1 ARM (PINCH-N) ASSY
*110 3-924-572-01 LEVER (DIR)
*111 3-924-575-01 LEVER (DIR-M)
112 3-924-601-01 SPRING, TENSION
*113 3-924-534-01 LEVER (C/R)
114 X-3370-378-1 LEVER (HEAD) ASSY
115 4-017-441-01 CUSHION (B)
116 3-938-133-01 SCREW
117 3-365-630-02 SCREW (M1.4)
*118 3-924-535-01 LEVER (FR)
119 X-3370-375-1 TABLE ASSY, REEL
120 3-018-121-01 SPRING (B.T), COMPRESSION
*121 3-924-536-01 LEVER (OFF)
122 3-321-483-11 RING, RETAINING
123 3-924-569-14 PAD (S-OFF)
124 3-924-602-01 SPRING, TENSION
*125 3-924-538-12 LEVER (S-OFF)
126 1-657-172-11 MOTOR FLEXIBLE BOARD
127 3-704-245-42 SCREW (1.4)
128 3-035-367-01 BELT (MOTOR)
129 3-924-577-01 PULLEY (COUNTER)
HRPE9011-500-590-11 HEAD, MAGNETIC (REC/PB/ERASE)
M901 1-698-804-21 MOTOR,DC(includingPULLEY)(CAPSTAN/REEL)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 24 –
7-4. MECHANISM DECK SECTION-2
(MT-50-30)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
151 X-3370-373-1 CHASSIS ASSY
*152 3-924-537-01 LEVER (F/R)
153 3-924-605-01 SPRING (FF), TENSION
154 3-924-593-01 BELT (FLYWHEEL)
155 3-701-437-51 WASHER
156 X-3377-138-1 FLYWHEEL ASSY
157 3-924-602-01 SPRING, TENSION
158 3-924-558-01 PULLEY (T)
159 3-321-483-11 RING, RETAINING
160 3-924-548-01 ARM (T-N)
161 3-924-557-01 GEAR (T)
162 3-924-549-01 ARM (T-R)
*163 3-924-539-01 LEVER (REW-F)
*164 3-924-540-01 LEVER (REW-R)
165 3-924-603-01 SPRING (F/R), TENSION
166 3-924-597-01 SPRING (F/R), TORSION
*167 3-924-568-01 LEVER (FF)
*168 3-924-567-01 LEVER (REW)
*169 3-924-566-01 LEVER (STOP)
*170 X-3370-377-1 LEVER (REC) ASSY
*171 3-924-565-01 LEVER (PLAY)
172 3-924-598-01 SPRING (P/S), TORSION
173 3-924-604-01 SPRING (PLAY), TENSION
*174 3-924-547-01 ARM (PLAY-SUB)
*175 3-924-545-01 LEVER (LOCK)
*176 3-924-546-01 LEVER (SW)
177 3-924-606-01 SPRING (LOCK), TENSION
178 3-924-725-01 REFLECTOR
179 3-924-579-01 GEAR (REF)
180 3-348-993-01 WASHER
181 X-3370-376-1 LEVER (CENTER) ASSY
182 3-924-556-01 GEAR (REW)
183 3-924-562-01 GEAR (FF)
184 3-924-560-01 GEAR (REEL)
185 3-924-600-01 SPRING (REC), TENSION
186 3-032-620-01 BELT (COUNTER)
187 3-704-245-42 SCREW (1.4)
188 3-032-438-01 BRACKET (COUNTER)
189 1-548-582-11 COUNTER, TAPE (SMALL TYPE)
*190 3-924-574-01 LEVER (PAUSE)
191 3-924-607-01 SPRING (ARM-T), TENSION
192 3-321-483-01 RING, RETAINING
193 3-305-925-00 WASHER
151
152
153
154
155
156
157
158 159
160
161 162
163
164
165
166
167
168 169 170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
159
158
161
193
192
159
159
183
184
not supplied
not
supplied
(including A)
(see page 23.)
159
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
Other manuals for Pressman TCM-50DV
4
Table of contents
Other Sony Cassette Player manuals
Sony
Sony TC-TX313 User manual
Sony
Sony Walkman WM-FX495 User manual
Sony
Sony TC-W320 - Stereo Double Cassette Deck User manual
Sony
Sony CFS-914 User manual
Sony
Sony WM-FS555 - S2 SPORTS WALKMAN User manual
Sony
Sony CFS-902 User manual
Sony
Sony Walkman WM-GX550 User manual
Sony
Sony Pressman TCM-4TR User manual
Sony
Sony Walkman WM-FX700 User manual
Sony
Sony Walkman MZ-R909 User manual
Sony
Sony Walkman WM-FX661 User manual
Sony
Sony Sports Walkman WM-FS422ST User manual
Sony
Sony TC-K370 User manual
Sony
Sony Walkman WM-FX888 User manual
Sony
Sony Walkman WM-EX501 User manual
Sony
Sony Walkman WM-FX488 User manual
Sony
Sony Walkman WM-SR10 User manual
Sony
Sony Walkman WM-EX621 User manual
Sony
Sony TC-W21 User manual
Sony
Sony J10 User manual
