Sony WM-EX2000 User Manual

WM-EX2000
US Model
AEP Model
Chinese Model
E Model
Tourist Model
SERVICE MANUAL
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MT-WMEX2000-162
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol ; are trademarks
of Dolby Laboratories Licensing Corporation.
CASSETTE PLAYER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-873-022-13
2003K16-1
© 2003.11
Frequency response
(Dolby NR off) Playback: 30 – 18,000 Hz
Output Headphones (i jack)
Load impedance 8 – 300 Ω
Power requirements 1.2 V
One rechargeable battery
Dimensions (w/h/d) Approx. 76.3 × 108.4 × 17.5 mm
(3
1
/8 × 4
3
/8 ×
23
/32 inches)
Mass Approx. 145 g (5.2 oz.)
Supplied accessories Stereo headphones or earphones with
remote control (1)
Battery charging stand (1)
AC power adaptor (1)
Rechargeable battery (NH-14WM (A),
1.2V, 1 350 mAh (MIN), Ni-MH) (1)
Rechargeable battery carrying case (1)
Carrying pouch (1)
Design and specifications are subject to change without notice
Ver 1.2 2003. 11

Sony WM-EX2000 Specifications

General

Type	Portable Cassette Player
Brand	Sony
Model	WM-EX2000
Playback Speed	4.76 cm/s
Power Supply	1.5V DC (1 x AA battery)
Features	Dolby B NR
Frequency Response	40Hz - 15kHz (with Dolby B)

Summary

Specifications

General Information

Service Notes

Disassembly Procedures

Lid Block Assembly Disassembly

Procedure for disassembling the cassette lid block assembly.

Case Block Assembly Disassembly

Procedure for disassembling the case block assembly.

Ornament (Open) Block Assembly Disassembly

Procedure for disassembling the ornament (open) block assembly.

Switch Leaf and Main Board Removal

Procedure for removing the switch leaf and main board.

Belt and Motor Replacement

Procedure for replacing the belt (F0) and motor (M601).

Holder (FA) Assembly Disassembly

Procedure for disassembling the holder (FA) assembly.

Pinch Lever (NF)/(RF) Assembly Disassembly

Procedure for disassembling the pinch lever (NF)/(RF) assembly.

Magnetic Head Removal

Procedure for removing the magnetic head (HP701).

Mechanical Adjustments

Electrical Adjustment

Diagrams and Schematics

Block Diagram Overview

Overall functional block diagram of the WM-EX2000 circuit.

Printed Wiring Board Layout

Printed wiring board layout for the main board (Side A).

Schematic Diagram (Part 1)

First part of the main board schematic diagram.

Schematic Diagram (Part 2)

Second part of the main board schematic diagram.

Integrated Circuit Block Diagrams

Block diagrams for key integrated circuits (ICs).

IC Pin Function Descriptions

Detailed pin function descriptions for integrated circuits.

Exploded Views and Parts

Cabinet Block Exploded View

Exploded view of the cabinet block and its components.

Mechanism Deck Block Exploded View

Exploded view of the mechanism deck block and its components.

Electrical Parts List