Sony M-740V User manual

M-740V
E Model
Chinese Model
East European Model
SERVICE MANUAL
MICROCASSETTE
TM
-CORDER
Sony Corporation
Audio Entertainment Group
General Engineering Dept.
9-873-089-11
2001B1600-1
© 2001.2
SPECIFICATIONS
Ver 1.0 2001. 02
Model Name Using Similar Mechanism M-730V
Tape Transport Mechanism Type MZ-730V-99
Tape
(normal position type)
Recording system
2-track 1-channel monaural
Speaker
Approx. 3.6 cm (1
7
⁄ 16 in.) dia.
Tape speed
2.4 cm/s (
15
⁄ 16 ips), 1.2 cm/s (
15
⁄ 32 ips)
Frequency range
300 - 4,000 Hz (with TAPE SPEED switch at 2.4 cm/s)
Input
Microphone input jack (minijack/PLUG IN POWER)
sensitivity 0.22 mV for 3 kilohms or lower impedance microphone
Output
Earphone jack (minijack) for 8 - 300 ohms earphone
Power output (at 10% harmonic distortion)
250 mW
Power requirements
3 V DC batteries R6 (size AA) ×2/External DC 3V power sources
Dimensions (w/h/d)
Approx. 62.2 ×120.5 ×25.5 mm (2
1
⁄ 2 ×4
3
⁄ 4 ×1
1
⁄ 16 in.) incl. projecting
parts and controls
Mass
Approx. 130 g (4.6 oz)
Supplied accessories
Microcassette tape MC-30 (1) (European model only)
Batteries R6P (SR) (2) (European model only)
Carrying pouch (1) (M-830V and European model of M-740V only)
Design and specifications are subject to change without notice.

2
M-740V
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. GENERAL ....................................................................3
2. DISASSEMBLY
2-1. Lid Assy, Cassette.......................................................... 4
2-2. Lid, Battery Case ........................................................... 4
2-3. Cabinet (Rear) Assy....................................................... 5
2-4. Speaker Assy, Microphone ............................................ 5
2-5. Main Board.................................................................... 6
2-6. Mechanism Deck ........................................................... 6
2-7. LED Unit ....................................................................... 7
2-8. Head, Creamic (HRPE901, 902) ................................... 7
3. MECHANICAL ADJUSTMENTS ..............................8
4. ELECTRICAL ADJUSTMENTS ...............................8
5. DIAGRAMS
5-1. Block Diagram ............................................................ 11
5-2. Printed Wiring Board................................................... 12
5-3. Schematic Diagram ..................................................... 13
6. EXPLODED VIEWS
6-1. Cabinet Section ........................................................... 14
6-2. Mechanism Deck Section (1) ...................................... 15
6-3. Mechanism Deck Section (2) ...................................... 16
7. ELECTRICAL PARTS LIST.....................................17

3
M-740V
SECTION 1
GENERAL
EAR
Microphone
Micrófono
z
>PAUSE
CUE/
REVIEW
xZ
VOR
TAPE SPEED
TAPE COUNTER
CUE MARKER
MIC (PLUG
IN POWER)
REC lamp (M-830V)
Indicador REC (M-830V)
REC/BATT lamp (M-740V)
Indicador REC/BATT (M-740V)
FAST PB
EAR
nN
>PAUSE
CUE/
REVIEW
xZ
TAPE SPEED
FAST PB
Tape direction
indicators
Indicadores de
sentido de la cinta DIR.
DIR.
This section is extracted
from instruction manual.

4
M-740V SECTION 2
DISASSEMBLY
•The equipment can be removed using the following procedure.
Note : Follow the disassembly procedure in the numerical order given.
2-1. LID ASSY, CASSETTE
2-2. LID, BATTERY CASE
Set Lid assy, cassette Head, ceramic
(HRPE901,902
)
LED unit
Lid, battery case
Cabinet (rear)
assy
Main board Mechanism
deck
Speaker, Microphone
(MIC901)
Lid assy, cassette
2axis
3axis
4claw
5
1
Zp(Eject/Stop) button
Lid, battery case
1claw
1claw
2

5
M-740V
2-3. CABINET (REAR) ASSY
Note : When installing, fit the knobs and switches.
2-4. SPEAKER, MICROPHONE (MIC901)
2Four screws
(B1.7 ×16)
1Screw
(B1.7 ×5)
3Claw
5Cabinet
(rear) assy
4Claw
s
Switch
(TAPE SPEED)
Switch
(PAUSE)
Knob
(PAUSE)
Knob
(FR)
4Unsolder 2 places.
1Unsolder 2 places.
2Two screws
(B2 ×2.5)
3Speake
r
8Microphone
(MIC901)
5Holder (MIC)
6
7Mic cushion

6
M-740V
2-6. MECHANISM DECK
2-5. MAIN BOARD
1 Unsolder 8 places.
4 Two screws
2 Unsolder 6 places.
6 Main board
3 Unsolder 4 places.
5
6
4Mechanism deck
Button
(EJECT/STOP)
Button
(PLAY)
Button
(REC)
2
1
3

7
M-740V
2-7. LED UNIT
2-8. HEAD, CERAMIC (HRPE901, 902)
Blacket (LED)
Claw
LED unit
1Three screws
(1.7 ×2.3) tapping
2
1Claw
3M1.4, special hea
d
4M1.4, special head
2Arm (pinch roller) assy
5Head, ceramic
(HRPE901, 902)

8
M-740V
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback/erase head pinch roller
rubber belts capstan
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. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Power supply voltage : 3 Vdc
TAPE SPEED switch : 2.4cm
Torque Measurement
SECTION 3
MECHANICAL ADJUSTMENTS
Record/Playback/Erase Head Azimuth Adjustment
Setting:
VOL control : mechanical mid
TAPE SPEED switch : 2.4cm/s
VOR switch : OFF
FAST PB switch : OFF
Procedure:
1. Mode : Playback
Adjustment Location :
Test Tape
SECTION 4
ELECTRICAL ADJUSTMENTS
2. Turn the adjustment screw to obtain the maximum reading on
level meter.
Note: Several peaks may appear, but the maximum.
First remove the cover (AZ).
EAR jack (J102)
set
16 Ω
test tape
S-2-A030A
(3 kHz, –20 dB) level meter
Remove the cover (AZ)
Head azimuth
adjustment scre
w
(FWD)
(REV)
Tape Tension Measurement
Mode
Forward
Reverse
Fast Forward
Rewind
Torque Meter
CQ-102M
CQ-102MR
CQ-201M
CQ-201M
Meter Reading
0.49 to 0.98 mN •m
(5 to 10 g •cm)
(0.07 to 0.140 oz •inch)
0.49 to 0.98 mN •m
(5 to 10 g •cm)
(0.07 to 0.140 oz •inch)
more than 2.94 mN •m
(more than 30 g •cm)
(more than 0.42 oz •inch)
more than 2.94 mN •m
(more than 30 g •cm)
(more than 0.42 oz •inch)
Mode
Forward
Reverse
Torque Meter
CQ-403M
CQ-403MR
Meter Reading
more than 2.45 mN •m
(more than 25 g)
(more than 0.35 oz)
more than 2.45 mN •m
(more than 25 g)
(more than 0.35 oz)
Type
S-2-A030A
WS-24
Signal
3 kHz, –20 dB
3 kHz, –10 dB
Used for
Head Azimuth Adjustment
Tape Speed Adjustment
Tape Speed
(cm/s)
2.4
1.2/2.4

9
M-740V
Specification Value:
Tape Speed Adjustment
Setting:
VOL control : mechanical mid
VOR switch : OFF
Procedure:
•Reform 2.4 cm/s speed adjustment before 1.2 cm/s speed
adjustment mode : playback
Frequency difference between the beginning and the end of the
tapeshould be within ±0.5%.
Adjustment Location :
First remove the plate, blind.
1. Tape Speed : 2.4 cm/s
Playback WS-24 (tape center part) and adjust RV601 so that
reading on the digital frequency counter becomes 3,000 Hz.
2. Tape Speed : 1.2 cm/s
Playback WS-24 (tape center part) and adjust RV602 so that
reading on the digital frequency counter becomes 3,000 Hz.
0000
EAR jack (J102)
digital frequenc
y
counter
set
16 Ω
test tape
WS-24: tape speed 1.2/2.4cm/s
(3 kHz, –10 dB)
Remove the
plate, blind.
RV602
(1.2 cm/s)
RV601
(2.4 cm/s) Speed adjustable
resistors
Tape Speed
1.2/2.4 cm/s
Frequency counter
2,880 to 3,120 Hz

10
M-740V
• IC Block Diagrams
IC101 LA4168ML-TE-L
SECTION 5
DIAGRAMS
IC601 LB1877V-TLM
+
–
+
–
+
–
+
–
21
222324
2526272829
30
235
4678910
111 12 13 14 15
16
17
1819
20
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
UOUT DR VCC LB FC OUT VSP IN+ VREF S/S
20 19 18 17 16 15 14 13 12 11
VOUT
WOUT
P-GND
WB
VB
UB
OSC
COM
GND
RI
1 2 3 4 5 6 7 8 9 10
DRIVER STARTUP
DIR LOGIC
STARTUP
DET
WAVEFORM
DET
CURRENT
DET
SPEED
DET
LOCKING
PROTECT
OSC
BIASREF V
TSD +
–

1111
M-740V
5-1. BLOCK DIAGRAM
J101
MIC
MIC901
MIC
(PLUG IN POWER)
MIC
ALC CONTROL
Q101
HRPE901
REC/PB/ERASE
HEAD
REC/PB
SWITCH
Q102
VOR
SWITCH
Q104
VOICE MIRROR
SWITCH
Q106
VOICE MIRROR
DRIVE
Q107
NF CONTROL
Q103, 116
DIR
SWITCH
Q117
PB
REC
S101 (2/4)
(REC/PB)
PB
REC
S101 (1/4)
(REC/PB)
(REC/PB)
(ERASE)
HRPE902
REC/PB/ERASE
HEAD
(REC/PB)
(ERASE)
1.2cm
2.4cm
S602 (2/2)
TAPE SPEED
26 15
21
27
5
4
1
29
28
2
REC/PB AMP
IC101 (1/2)
+
-
+
-
+
-
+
-
MIC IN
MIC
EQ
PRE NF
ALC CONT
REC OUT
VREF OUT
VREF
EQ IN
MIC VCC
MUTE
R.F VCC
3
REC IN
PRE OUT
VOX
VOX DELAY
B+
(3V)
ALC
MIC
VCC
S101 (3/4)
(REC/PB)
PB
REC
PB REC
OFF
L
H
S102
VOR
RV101
VOL
24
11 14
PWR IN PWR OUT2
12
16 1
13
11 14 15 19
2
20
22
PWR OUT1
GVM OUT GVN VREF
GVN CONT
POWER AMP
IC101 (2/2)
LED DRIVE
23
P/R SW
P/R
PAUSE
M
B+
(+3V)
M901
MOTOR
S101 (4/4)
(REC/PB)
J102
EAR
+
SP901
SPEAKER
LED UNIT
B+
B+
DRY BATTERY
SIZE "AA"
(IED DESIGNATION R6)
2PCS, 3V
DC IN 3V
CN101
S103
(POWER)
S604
(DIR)
Signal path
: PB
: REC
REC
MUTE
Q120
MUTE
SWITCH
Q119
Q108
VREF
MUTE
SWITCH
Q112
PAUSE
SWITCH
Q118
MUTE
GEN
Q111
S603
PAUSE
OFF
ON
UOUT
VOUT
IN+
S/S VSP
OUT
DR
12 VREF
WOUT
2.4cm
1.2cm
S602 (1/2)
TAPE SPEED
RV601
TAPE
SPEED
1.2cm
RV602
TAPE
SPEED
2.4cm
SPEED
1
2
POWER AMP
POWER AMP
VOX
7
DRIVER
STARTUP
DIR LOGIC
WAVEFORM
DET
LOCKING
PROTECT
STARTUP
DET
CURRENT
DET
SPEED
DET
REF V OSC
BIAS
REC/BATT
INVERTER
Q603
+
-
+
MOTOR SERVO
IC601
20
19

1212
M-740V
5-2. PRINTED WIRING BOARD
Note:
•X: parts extracted from the component side.
•®: Through hole.
•: 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.
IC601
IC101
.
cm
cm
1
A
B
C
D
E
F
G
H
2345678910111213
Ref. No. Location
D101 B-3
IC101 E-4
IC601 C-4
Q101 G-4
Q102 F-3
Q103 E-5
Q104 D-5
Q105 C-9
Q106 D-5
Q107 D-6
Q108 G-11
Q109 D-6
Q111 E-3
Q112 E-3
Q116 D-5
Q117 F-11
Q118 G-6
Q119 D-6
Q120 F-11
Q603 D-11
• Semiconductor
Location

1313
M-740V
5-3. SCHEMATIC DIAGRAM
Note:
• 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 Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•A: B+ Line.
•H: adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
condition.
no mark : PB
( ) : REC
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
E: PB
a: REC
• Refer to page 10 for IC Block Diagrams.
B/D
B/D

1414-1
M-740V
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
SECTION 6
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.
• Accessories and packing materials are
given in the last of this parts list.
6-1. CABINET SECTION
1
2
9
39
4
47
545
46
33
34
14
44
36
37
23
21 22
35
19
26
25
27
28
29
30
40
31
32
24
18
38
17
16
41
20
42
12
11
10
7
MIC901
SP901
not supplied
6
1 A-3052-320-A LID ASSY, CASSETTE
2 X-3380-121-2 CABINET (FRONT) SUB ASSY
4 3-031-649-01 KNOB (RV)
5 3-010-503-01 SPRING (B), BATTERY COIL
6 3-669-481-07 PIN (DIA. 1X10), PARALLEL
7 3-031-645-01 HOLDER (MIC)
9 3-031-653-01 CUSHION, MIC
10 1-418-390-11 LED UNIT
11 3-031-652-01 BRACKET (LED)
12 3-318-382-31 SCREW (1.7), TAPPING
14 3-034-792-01 SCREW, TAPPING (B2.0)
16 3-031-656-01 BUTTON (REC)
17 3-031-655-01 BUTTON (PLAY)
18 3-031-654-01 BUTTON (STOP)
19 3-704-197-31 LOCK, SERRAT IB
20 3-036-882-01 SPACER (JACK)
21 3-034-687-01 TERMINAL (-), BATTERY
22 3-034-686-01 TERMINAL (+), BATTERY
23 3-831-441-01 SPACER, KNOB
24 A-3021-220-A MAIN BOARD, COMPLETE
25 X-3380-123-2 CABINET (REAR) ASSY
26 3-037-004-01 PAPER (A), SHIELD
27 3-031-660-01 KNOB (FR)
28 3-035-255-11 SCREW (1.7X16)
29 3-358-363-81 PLATE, BLIND
30 3-318-203-72 SCREW (B1.7X5), TAPPING
31 3-031-662-22 LID, BATTERY CASE
32 3-914-930-11 CUSHION (BATTERY CASE LID)
33 3-328-319-01 STRAP, HAND
34 3-037-193-01 CUSHION (SP)
35 3-037-146-01 CUSHION (A)
36 7-623-505-01 LUG, 2
37 3-703-816-07 SCREW (M1.4), SPECIAL HEAD
*38 3-037-557-01 SHEET (B), GROUND
39 3-039-027-01 SPACER (MIC)
40 3-039-501-01 SPACER (CABINET REAR)
41 3-039-381-01 CUSHION (PLAY)
42 3-039-382-01 SPACER (PLAY)
44 3-380-902-21 SPACER (FR)
45 4-963-883-61 SCREW (M1.4), PRECISION PAN
46 3-037-211-01 REINFORCEMENT (MJ)
47 3-031-641-01 LENS (LED)
SP901 1-529-188-11 SPEAKER (3.6cm)
MIC901 1-542-386-11 MICROPHONE, ELECTRET CONDENSER(MIC)

14-214
M-740V
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
SECTION 6
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.
• Accessories and packing materials are
given in the last of this parts list.
6-1. CABINET SECTION
1
2
9
39
4
47
545
46
33
34
14
44
36
37
23
21 22
35
19
26
25
27
28
29
30
40
31
32
24
18
38
17
16
41
20
42
12
11
10
7
MIC901
SP901
not supplied
6
1 A-3052-320-A LID ASSY, CASSETTE
2 X-3380-121-2 CABINET (FRONT) SUB ASSY
4 3-031-649-01 KNOB (RV)
5 3-010-503-01 SPRING (B), BATTERY COIL
6 3-669-481-07 PIN (DIA. 1X10), PARALLEL
7 3-031-645-01 HOLDER (MIC)
9 3-031-653-01 CUSHION, MIC
10 1-418-390-11 LED UNIT
11 3-031-652-01 BRACKET (LED)
12 3-318-382-31 SCREW (1.7), TAPPING
14 3-034-792-01 SCREW, TAPPING (B2.0)
16 3-031-656-01 BUTTON (REC)
17 3-031-655-01 BUTTON (PLAY)
18 3-031-654-01 BUTTON (STOP)
19 3-704-197-31 LOCK, SERRAT IB
20 3-036-882-01 SPACER (JACK)
21 3-034-687-01 TERMINAL (-), BATTERY
22 3-034-686-01 TERMINAL (+), BATTERY
23 3-831-441-01 SPACER, KNOB
24 A-3021-220-A MAIN BOARD, COMPLETE
25 X-3380-123-2 CABINET (REAR) ASSY
26 3-037-004-01 PAPER (A), SHIELD
27 3-031-660-01 KNOB (FR)
28 3-035-255-11 SCREW (1.7X16)
29 3-358-363-81 PLATE, BLIND
30 3-318-203-72 SCREW (B1.7X5), TAPPING
31 3-031-662-22 LID, BATTERY CASE
32 3-914-930-11 CUSHION (BATTERY CASE LID)
33 3-328-319-01 STRAP, HAND
34 3-037-193-01 CUSHION (SP)
35 3-037-146-01 CUSHION (A)
36 7-623-505-01 LUG, 2
37 3-703-816-07 SCREW (M1.4), SPECIAL HEAD
*38 3-037-557-01 SHEET (B), GROUND
39 3-039-027-01 SPACER (MIC)
40 3-039-501-01 SPACER (CABINET REAR)
41 3-039-381-01 CUSHION (PLAY)
42 3-039-382-01 SPACER (PLAY)
44 3-380-902-21 SPACER (FR)
45 4-963-883-61 SCREW (M1.4), PRECISION PAN
46 3-037-211-01 REINFORCEMENT (MJ)
47 3-031-641-01 LENS (LED)
SP901 1-529-188-11 SPEAKER (3.6cm)
MIC901 1-542-386-11 MICROPHONE, ELECTRET CONDENSER(MIC)

15
M-740V
6-2. MECHANISM DECK SECTION (1)
(MZ-730V-99)
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
51 3-331-007-21 WASHER
52 3-350-989-01 WASHER
53 3-028-961-01 SPRING (BUTTON), COMPRESSION
56 3-046-281-01 LEVER (POWER SW)
57 3-028-940-01 LEVER (SRS)
58 3-028-938-01 LEVER (SLIDE)
59 3-578-224-00 WASHER
60 X-3376-227-1 LEVER (F/R) ASSY
61 X-3376-228-1 LEVER (TU) ASSY
62 3-029-634-01 BEARING
63 X-3376-231-1 FLYWHEEL ASSY
64 3-377-420-11 BELT
66 X-3376-230-1 LIMITTER ASSY
67 3-028-955-01 SPRING (LOCK), TENSION
68 X-3377-535-1 LEVER (LOCK) ASSY
69 4-992-239-01 WASHER (A)
*70 3-028-967-01 LEVER (PAUSE RELEASE)
71 3-028-954-01 SPRING (SW LEVER), TENSION
72 3-321-813-71 RING, RETAINING
73 3-028-928-01 LEVER (EJECT)
74 3-028-964-01 SPRING (SLIDER), TORSION
75 4-926-562-01 WASHER, STOPPER
76 3-028-927-01 LEVER (STOP)
77 X-3378-643-1 LEVER (REVERSE SWITCH) ASSY
78 X-3376-236-1 LEVER (CLAW DETECTION R) ASSY
79 3-029-635-01 SPRING (LEVER DIR), TORSION
80 3-029-639-01 SPRING, TENSION
81 3-028-932-01 LEVER (JOINT)
82 3-028-933-01 LEVER (DIR)
83 3-028-905-01 GEAR(S-OFF), CAM
84 3-039-284-01 SPRING TENSION
85 3-028-942-01 SPRING (D-LOCK), TORSION
86 3-028-941-01 LEVER (DIR-LOCK)
87 3-028-906-01 GEAR(REVERSE), CAM
88 X-3376-224-1 LEVER (REC) ASSY
84
81
82 83
75
85
86
80
87
51
66
64
63
59
58
57
56
62
61
60
88
53
52
51
67
68
79
71
72
73
69
70
74
75
76
78
77

16
M-740V
101 3-704-197-01 SCREW (M1.4), SPECIAL HEAD
102 3-703-816-73 SCREW (M1.4), SPECIAL HEAD
103 3-028-960-01 SPRING (AZIMUTH), COMPRESSION
104 3-028-909-01 GUIDE (N), TAPE
105 3-028-965-01 SPRING (PINCH ARM), TORSION
108 X-3376-232-1 LEVER (PLAY) ASSY
109 X-3376-235-1 ARM(PINCH ROLLER) ASSY
110 3-321-813-61 RING, RETAINING
111 1-548-579-41 COUNTER, TAPE (SMALL TYPE)
112 X-3376-726-1 CHASSIS (COMP) ASSY (R)
113 3-343-948-01 BELT
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
114 3-028-922-01 BRACKET (N), HEAD
115 X-3376-234-1 BRACKET (R) ASSY, HEAD
116 3-028-962-01 SPRING, TORSION
117 3-028-910-01 GUIDE (R), TAPE
118 3-028-921-01 LEVER (HEAD ROTARY)
119 3-029-808-01 BRACKET (MOTOR)
120 3-365-053-01 SHEET (BA), ADHESIVE
121 3-704-197-71 SCREW M1.4X4.5
M901 1-763-236-11 MOTOR, DC (REEL/CAPSTAN)(WITH PULLY)
HRPE901 1-500-593-11 HEAD, CERAMIC (REC/PB/ERASE)
HRPE902 1-500-594-11 HEAD, CERAMIC (REC/PB/ERASE)
6-3. MECHANISM DECK SECTION (2)
(MZ-730V-99)
M901
HRPE901
HRPE902
108
104
109
101
121
103
114
115
116
110
105
117
103
101 121
119
101
101
102
112
113
120
111
118

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
17
SECTION 7
ELECTRICAL PARTS LIST
NOTE:
•Due to standardization, replacements in the
parts list may be different from the parts
specifiedin the diagrams or the components
used on the set.
•-XX, -X mean standardized parts, so they
may have some difference from the original
one.
•Items marked “*”are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•CAPACITORS:
uF: µF
•RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
•COILS
uH: µH
•SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
M-740V
MAIN
A-3021-220-A MAIN BOARD, COMPLETE
*********************
3-036-882-01 SPACER (JACK)
< CAPACITOR >
C101 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V
C102 1-110-501-11 CERAMIC CHIP 0.33uF 10.00% 16V
C103 1-110-501-11 CERAMIC CHIP 0.33uF 10.00% 16V
C104 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V
C105 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C106 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C107 1-107-823-11 CERAMIC CHIP 0.47uF 10.00% 16V
C108 1-126-209-11 ELECT CHIP 100uF 20.00% 4V
C109 1-113-690-11 ELECT CHIP 220uF 20.00% 4V
C110 1-135-201-11 TANTALUM CHIP 10uF 20% 4V
C111 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C112 1-164-182-11 CERAMIC CHIP 0.0033uF 10% 50V
C113 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C114 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C115 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C116 1-164-346-11 CERAMIC CHIP 1uF 16V
C119 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C120 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C121 1-164-346-11 CERAMIC CHIP 1uF 16V
C122 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C123 1-164-005-11 CERAMIC CHIP 0.47uF 25V
C124 1-135-201-11 TANTALUM CHIP 10uF 20% 4V
C125 1-104-912-11 TANTAL. CHIP 3.3uF 20.00% 4V
C126 1-164-489-11 CERAMIC CHIP 0.22uF 10.00% 16V
C127 1-164-489-11 CERAMIC CHIP 0.22uF 10.00% 16V
C128 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C129 1-126-246-11 ELECT CHIP 220uF 20% 4V
C130 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C131 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V
C132 1-163-038-11 CERAMIC CHIP 0.1uF 25V
C133 1-164-005-11 CERAMIC CHIP 0.47uF 25V
C134 1-124-778-00 ELECT CHIP 22uF 20% 6.3V
C135 1-164-505-11 CERAMIC CHIP 2.2uF 16V
C136 1-124-778-00 ELECT CHIP 22uF 20% 6.3V
C137 1-107-725-11 CERAMIC CHIP 0.1uF 10.00% 16V
C138 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V
C139 1-135-201-11 TANTALUM CHIP 10uF 20% 4V
C140 1-107-823-11 CERAMIC CHIP 0.47uF 10.00% 16V
C141 1-164-161-11 CERAMIC CHIP 0.0022uF 10% 100V
C142 1-164-005-11 CERAMIC CHIP 0.47uF 25V
C143 1-163-038-11 CERAMIC CHIP 0.1uF 25V
C144 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V
C145 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C146 1-163-001-11 CERAMIC CHIP 220PF 10% 50V
C147 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C148 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C149 1-163-035-00 CERAMIC CHIP 0.047uF 50V
C150 1-115-583-11 ELECT CHIP 10uF 20.00% 4V
C151 1-104-847-11 TANTAL. CHIP 22uF 20.00% 4V
C152 1-104-847-11 TANTAL. CHIP 22uF 20.00% 4V
C154 1-135-201-11 TANTALUM CHIP 10uF 20% 4V
C155 1-164-222-11 CERAMIC CHIP 0.22uF 25V
C156 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C157 1-107-725-11 CERAMIC CHIP 0.1uF 10.00% 16V
C158 1-163-038-11 CERAMIC CHIP 0.1uF 25V
C601 1-164-344-11 CERAMIC CHIP 0.068uF 10.00% 25V
C602 1-164-344-11 CERAMIC CHIP 0.068uF 10.00% 25V
C603 1-164-344-11 CERAMIC CHIP 0.068uF 10.00% 25V
C604 1-164-489-11 CERAMIC CHIP 0.22uF 10.00% 16V
C605 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C606 1-104-915-11 TANTALUM CHIP 2.2uF 20% 10V
C607 1-107-823-11 CERAMIC CHIP 0.47uF 10.00% 16V
C608 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V
C609 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
< CONNECTOR >
CN101 1-580-372-21 JACK,DC(POLARITY UNIFIED TYPE)(CN IN 3V)
< DIODE >
D101 8-719-977-03 DIODE DTZ5.6B
< FERRITE BEAD >
FB101 1-414-235-11 FERRITE 0uH
< IC >
IC101 8-759-492-49 IC LA4168ML-TE-L
IC601 8-759-566-10 IC LB1877V-TLM
< JACK >
J101 1-785-791-11 JACK (MIC)
J102 1-785-790-11 JACK (EAR)
< TRANSISTOR >
Q101 8-729-800-37 TRANSISTOR 2SD1048-X7
Q102 8-729-402-84 TRANSISTOR XN4601
Q103 8-729-230-72 TRANSISTOR 2SA1362YG

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
18
M-740V
Q104 8-729-230-63 TRANSISTOR 2SC4116-YG
Q105 8-729-230-63 TRANSISTOR 2SC4116-YG
Q106 8-729-420-44 TRANSISTOR UN5210
Q107 8-729-402-84 TRANSISTOR XN4601
Q108 8-729-403-45 TRANSISTOR XN1115
Q109 8-729-028-76 TRANSISTOR DTA114YUA-T106
Q111 8-729-029-01 TRANSISTOR DTC115TUA-T106
Q112 8-729-230-63 TRANSISTOR 2SC4116-YG
Q116 8-729-230-63 TRANSISTOR 2SC4116-YG
Q117 8-729-402-93 TRANSISTOR UN5214
Q118 8-729-420-44 TRANSISTOR UN5210
Q119 8-729-230-60 TRANSISTOR 2SA1586-YG
Q120 8-729-230-63 TRANSISTOR 2SC4116-YG
Q603 8-729-230-60 TRANSISTOR 2SA1586-YG
< RESISTOR >
R101 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R102 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R103 1-216-069-00 METAL CHIP 6.8K 5% 1/10W
R104 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R105 1-216-025-11 RES-CHIP 100 5% 1/10W
R106 1-216-041-00 METAL CHIP 470 5% 1/10W
R107 1-216-113-00 METAL CHIP 470K 5% 1/10W
R108 1-216-037-00 METAL CHIP 330 5% 1/10W
R109 1-216-073-00 METAL CHIP 10K 5% 1/10W
R110 1-216-073-00 METAL CHIP 10K 5% 1/10W
R111 1-216-037-00 METAL CHIP 330 5% 1/10W
R112 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R113 1-216-081-00 METAL CHIP 22K 5% 1/10W
R114 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R115 1-216-089-11 RES-CHIP 47K 5% 1/10W
R116 1-216-017-00 RES-CHIP 47 5% 1/10W
R117 1-216-037-00 METAL CHIP 330 5% 1/10W
R118 1-216-093-00 RES-CHIP 68K 5% 1/10W
R119 1-216-049-11 RES-CHIP 1K 5% 1/10W
R120 1-216-073-00 METAL CHIP 10K 5% 1/10W
R121 1-216-113-00 METAL CHIP 470K 5% 1/10W
R122 1-216-049-11 RES-CHIP 1K 5% 1/10W
R124 1-216-097-11 RES-CHIP 100K 5% 1/10W
R125 1-216-121-11 RES-CHIP 1M 5% 1/10W
R126 1-216-041-00 METAL CHIP 470 5% 1/10W
R127 1-216-077-00 RES-CHIP 15K 5% 1/10W
R128 1-216-105-00 RES-CHIP 220K 5% 1/10W
R129 1-216-085-00 METAL CHIP 33K 5% 1/10W
R130 1-216-065-00 RES-CHIP 4.7K 5% 1/10W
R131 1-216-069-00 METAL CHIP 6.8K 5% 1/10W
R132 1-216-073-00 METAL CHIP 10K 5% 1/10W
R133 1-216-073-00 METAL CHIP 10K 5% 1/10W
R134 1-216-081-00 METAL CHIP 22K 5% 1/10W
R135 1-216-097-11 RES-CHIP 100K 5% 1/10W
R137 1-216-009-00 RES-CHIP 22 5% 1/10W
R138 1-216-009-00 RES-CHIP 22 5% 1/10W
R139 1-216-053-00 METAL CHIP 1.5K 5% 1/10W
R140 1-216-013-00 METAL CHIP 33 5% 1/10W
R141 1-216-009-00 RES-CHIP 22 5% 1/10W
R142 1-216-073-00 METAL CHIP 10K 5% 1/10W
R143 1-216-073-00 METAL CHIP 10K 5% 1/10W
R144 1-216-089-11 RES-CHIP 47K 5% 1/10W
R147 1-216-069-00 METAL CHIP 6.8K 5% 1/10W
R148 1-216-089-11 RES-CHIP 47K 5% 1/10W
R149 1-216-073-00 METAL CHIP 10K 5% 1/10W
R150 1-216-073-00 METAL CHIP 10K 5% 1/10W
R151 1-216-049-11 RES-CHIP 1K 5% 1/10W
R152 1-216-049-11 RES-CHIP 1K 5% 1/10W
R154 1-216-077-00 RES-CHIP 15K 5% 1/10W
R155 1-216-295-11 SHORT 0
R156 1-216-037-00 METAL CHIP 330 5% 1/10W
R157 1-216-097-11 RES-CHIP 100K 5% 1/10W
R601 1-216-097-11 RES-CHIP 100K 5% 1/10W
R602 1-216-073-00 METAL CHIP 10K 5% 1/10W
R603 1-216-065-00 RES-CHIP 4.7K 5% 1/10W
R605 1-216-121-11 RES-CHIP 1M 5% 1/10W
R606 1-216-121-11 RES-CHIP 1M 5% 1/10W
R607 1-216-121-11 RES-CHIP 1M 5% 1/10W
R608 1-216-085-00 METAL CHIP 33K 5% 1/10W
R609 1-216-073-00 METAL CHIP 10K 5% 1/10W
R610 1-216-097-11 RES-CHIP 100K 5% 1/10W
R611 1-216-077-00 RES-CHIP 15K 5% 1/10W
R612 1-216-065-00 RES-CHIP 4.7K 5% 1/10W
R615 1-216-065-00 RES-CHIP 4.7K 5% 1/10W
R617 1-216-073-00 METAL CHIP 10K 5% 1/10W
R618 1-216-081-00 METAL CHIP 22K 5% 1/10W
R619 1-216-065-00 RES-CHIP 4.7K 5% 1/10W
< VARIABLE RESISTOR >
RV101 1-237-731-21 RES, VAR, CARBON 10K (VOL)
RV601 1-238-663-11 RES, ADJ, CARBON 4.7K
RV602 1-238-663-11 RES, ADJ, CARBON 4.7K
< SWITCH >
S101 1-572-964-11 SWITCH, SLIDE
S102 1-692-605-11 SWITCH, SLIDE (VOR)
S103 1-762-594-41 SWITCH, PUSH (1 KEY) (POWER)
S602 1-571-277-51 SWITCH, SLIDE (TAPE SPEED)
S603 1-572-922-11 SWITCH, SLIDE (PAUSE)
S604 1-572-688-11 SWITCH, PUSH (1 KEY)(DIR)
< THERMISTOR(POSITIVE) >
THP601 1-803-124-11 THERMISTOR, POSITIVE
************************************************************
MISCELLANEOUS
**************
10 1-418-390-11 LED UNIT
SP901 1-529-188-11 SPEAKER (3.6cm)
M901 1-763-236-11 MOTOR, DC (REEL/CAPSTAN)(WITH PULLY)
MIC901 1-542-386-11 MICROPHONE, ELECTRET CONDENSER(MIC)
HRPE901 1-500-593-11 HEAD, CERAMIC (REC/PB/ERASE)
HRPE902 1-500-594-11 HEAD, CERAMIC (REC/PB/ERASE)
************************************************************
MAIN

19
M-740V
ACCESSORIES & PACKING MATERIALS
********************************
3-035-588-01 POUCH, CARRYING (EastEuropean)
3-229-699-31 MANUAL, INSTRUCTION
(ENGLISH/SPANISH/ITALIAN/PORTUGUESE)(E)
3-229-699-51 MANUAL, INSTRUCTION
(ENGLISH/CHINESE/HUNGARIAN/RUSSIAN)
(Chinese/EastEuropean)
3-229-699-61 MANUAL, INSTRUCTION
(FRENCH/SLOVAK/POLISH/CZECH)(EastEuropean)
3-229-699-71 MANUAL, INSTRUCTION
(ENGLISH/CHINESE)(E)
Ref. No. Part No. Description Remarks