Sony Walkman WM-EX618 - User Manual

WM-EXoTl/EX618
SERVICE MANUAL AEP Model
UK Model!
| E Model
WM-EX618
Tourist Model
Mode! Name Using Similar Mechanism | WM-EX606
Tape Transport Mechanism Type MT-WMEX91 1-60
SPECIFICATIONS
Frequency response (DOLBY NR%* off) Accessories supplied
20 - 18,000 Hz (EIAJ**)
Output Earphones ( /REMOTE jack)
load impedance 8 - 300 2
Power output 5 mW + 5 mW at DC operation (EIAJ, 16 Q)
Power requirements 1.5 V DC Rechargeable battery (NC-6WM) * Battery case + Battery charger + Sony alkaline §»* Rechargeabl
One R6 (size AA) battery battery AM3 (N) _ battery
Battery life (EJAJ) SS P
Battery Playback oa
Rechargeable NC-6WM Approx. 3.5 hours
fully charged * Headphone + Ear adaptors(2)
Sony alkaline AM3 (N) Approx. 9 hours (with Remote Control) (if the earphones do not fit your
Rechargeable NC-6WM ears, attach the ear adaptors.)
with Sony AM3 (N) Approx. 12.5 hours
Sony SUM-3 (NS) Approx. 2.5 hours
For maximum performance we recommend the use of alkaline * Carrying case * Clip * Instruction manual
battery. + Leaf lets
* Warranty card
Dimensions Approx. 108.4 x 77.2 x 20.3 mm (w/h/d)
incl. projecting parts and controls (ElAd) Using on AC power
Mass Main unit Approx. 150 g Remove the rechargeable battery ifinserted and attach the battery case
For use Approx. 245 g (incl. Stereo earphone and connect the AC power adaptor (AC-E15HG not supplied) to the DC
with remote controller, rechargeable battery _'N 1.5 V of the battery case and to the wall outlet. Do not use any other
NC-6WM, tape C-60HF) AC power adaptor.
Design and specifications subject to change without notice. Polarity of
* Dolby noise reduction manufactured under licence from Dolby the plug
Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol! 00 are trademarks of Dolby
Laboratories Licensing Corporation.
**(EIAJ) Electric Industries Association of Japan C ASSETTE Pi AYER

Sony Walkman WM-EX618 Specifications

General

Brand	Sony
Model	Walkman WM-EX618
Category	Cassette Player
Language	English

Summary

SECTION 1 SERVICING NOTES

Servicing Setup Procedures

Procedures for setting the device for servicing operations.

SECTION 3 DISASSEMBLY PROCEDURES

Cassette Lid and Case Assembly Disassembly

Step-by-step guide to remove cassette lid and case.

Holder Assembly Disassembly

Step-by-step guide to disassemble the holder assembly.

SECTION 4 ADJUSTMENT PROCEDURES

Mechanical Adjustments Guide

Procedures for mechanical adjustments like torque.

Electrical Adjustments Guide

Procedures for electrical adjustments like tape speed.

SECTION 5 TECHNICAL DIAGRAMS

System Block Diagram

High-level functional block diagram of the system.

Main Board Schematic Diagram

Detailed circuit schematic for the main board.

Printed Wiring Board Layouts (Suffix 11)

Component layout on the main board (Side A & B) for Suffix No. 11.

Printed Wiring Board Layouts (Suffix 12)

Semiconductor Lead Layouts

IC Block Diagrams

IC Pin Function Details

SECTION 6 EXPLODED VIEWS

Case and Cassette Lid Exploded View

Main Board Exploded View

Mechanism Section 1 Exploded View

Mechanism Section 2 Exploded View

SECTION 7 ELECTRICAL PARTS LIST