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M-730V/830V
US Model
Canadian Model
AEP Model
E Model
M-730V/830V
Chinese Model
M-730V
Tourist Model
M-830V
SERVICE MANUAL
MICROCASSETTETM-CORDER
Ver 1.3 2003. 07
SPECIFICATIONS
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
MZ-730V-99
Photo : M-830V
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-927-100-13
2003G16-1
© 2003.07


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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 ........................................................ 13
5-3. Schematic Diagram ........................................................... 15
6. EXPLODED VIEWS
6-1. Cabinet Section ................................................................. 17
6-2. Mechanism Deck Section (1) ............................................ 19
6-3. Mechanism Deck Section (2) ............................................ 20
7. ELECTRICAL PARTS LIST ..................................... 21


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SECTION 1
GENERAL
1 VOL
knob
2 MIC jack
3 EAR jack
4 VOR switch
5 REC/BATT lamp
6 FAST PB switch (M-830V ONLY)
7 DC IN 3V jack
8 TAPE COUNTER
9 CUE MARKER button (M-830V ONLY)
0 i(Battery) lamp (M-830V ONLY)
!¡ Microphone
!TM r(REC) button
!£ C PAUSE knob
!¢ oe(Playback) button
! CUE/REVIEW knob
!§ TAPE SPEED select knob
!¶ wp(Eject/Stop) button
!· DIR c knob
!ª FWD/REV


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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
Speaker assy,
Microphone
Main board
Mechanism
deck
Lid assy, cassette
2
3
4
5
1
wp(Eject/Stop) button
Lid, battery case
1
1
2


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