SONY M98V - Service Manual Immediate Download

MICROFILM

Model Name Using Similar Mechanism

NEW

Tape Transport Mechanism Type

MZ-98-100

SERVICE MANUAL

US Model

Canadian Model

AEP Model

E Model

Tourist Model

M-98V

MICROCASSETTETM-CORDER

Tape

y (normal position type)

Recording system

2-track 1 channel monaural

Frequency range

400 - 3,000 Hz (2.4 cm/s)

Speaker

Approx. 2.8 cm (1 1/8 in.) dia.

Power output

250 mW

Input

Microphone input jack (minijack/plug in power) sensitivity

0.37 mV for 3 kilohms or lower impedance microphone

Output

Earphone jack (minijack) for 8 - 300 ohms earphone

Power requirements

3 V DC batteries R03 (size AAA)

× 2/External DC 3 V power

sources

Battery life (Approximate hours)

(EIAJ*)

Battery

Recording

Sony alkaline LR03 (SG)

9.5

Sony R03 (SB)

3.5

* Measured value by the standard of EIAJ (Electronic Industries

Association of Japan). (Using a Sony Microcassette tape)

For maximum performance, we recommend that you use

SPECIFICATIONS

Ver 1.0 1999. 03

alkaline batteries.

Dimensions (w/h/d) (incl. projecting parts and controls)

Approx. 60.5

× 93.9 × 26.0 mm (2 1/2 × 3 3/4 × 1 11/16 in.)

Mass

Approx. 130 g (4.6 oz.)

Supplied accessories

Remote control microphone ECM-J805 (1)

Microcassette tape MC-30 (1)

Earphone MDR-E123 (1)

Carrying case (1)

Hand strap (1)

Batteries R03 (SB) (2) (Tourist model only)

Design and specifications are subject to change without notice.

TABLE OF CONTENTS

1. SERVICE NOTE .......................................................... 3

2. GENERAL .................................................................... 4

3. DISASSEMBLY

3-1. Panel (Rear) Assy ................................................................ 5

3-2. Panel (Lid) Assy .................................................................. 5

3-3. MD Block Assy ................................................................... 6

3-4. Main board, complete ......................................................... 6

3-5. Frame .................................................................................. 7

3-6. Mode Motor Block .............................................................. 7

4. MECHANICAL ADJUSTMENTS .............................. 8

5. ELECTRICAL ADJUSTMENTS ............................... 8

6. DIAGRAMS

6-1. IC Pin Description ............................................................. 10

6-2. Block Diagram .................................................................. 12

6-3. Printed Wiring Board ........................................................ 14

6-4. Schematic Diagram ........................................................... 17

7. EXPLODED VIEWS

7-1. Panel (Lid) Section ............................................................ 22

7-2. Main Board Section .......................................................... 23

7-3. Mechanism Section (1) ..................................................... 24

7-4. Mechanism Section (2) ..................................................... 25

8. ELECTRICAL PARTS LIST .................................... 26

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.

BP701

(SERVICE)

S701

(MODE SELECT)

TP38

S703

(TAPE DET)

TP66

SHORT

MAIN BOARD (SIDE B)

terminal ' terminal

SECTION 1

SERVICE NOTE

This set uses the photo reflector PH701 to detect the rotation of the 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 gear. This makes motor control impossible which prevents normal operation.

When repairing the set as energized with the main board removed, proceed as follows:

· Service the Main Board

1. Short the BP701 (SERVICE) on the main board. (see the Fig. 1.)

2. Refer to the "SECTION3 DISASSEMBLY" (page 5) and open the main board.

3. Put a tape in the set.

4. Fixed at S703 (TAPE DET) on mode or connect the jumper wire between TP38 and GND (TP66).

5. Supply 3 V DC to the battery terminals.

6. Rotate the S701 (MODE SELECT) one turn by hand (mode sensor).

7. Press the desired operating switch (

9 (, FF, etc.).

8. Check the mode on the liquid crystal panel. Use item 6 repeatedly to switch modes.

9. When finished with the job, disconnect the power and open (remove the short) the BP701 (SERVICE).

Fig. 1.

SECTION 2

GENERAL

This section is extracted

from instruction manual.

1 screws (B1.7x18) (G), tapping

2 screw (B1.7x18) (G), tapping

3 screw (M1.4x5.0), locking

4 panel (rear) assy

switches

knob (MIC SENS)

knob (V ·O ·R)

SECTION 3

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

Note : Follow the disassembly procedure in the numerical order given.

3-1. PANEL (REAR) ASSY

· When installing, position the knobs (V·O·R, MIC SENS) and the switches.

Set

Panel (rear)

assy

Panel (lid)

assy

MD block

assy

Main board,

complete

Frame

Mode motor

block

3 screws (M1.4),

toothed lock

2 CN102

1 knob (EJECT)

5 lever (C holder) assy

4 screw

6 panel (lid) assy

3-2. PANEL (LID) ASSY