Sony wm wx 50 service manual

Page 1

Model Name Using Similar Mechanism

WM-ZOBI

Tape Transport Mechanism Type

MT~WM2051 -43

SPECIFICATIONS

Frequency response (DOLBY NR OFF)

Output

Power output

Power requirements

With the wireless headphone receiver:
40 - 15,000 Hz
With the wired headphones 40<15,000 Hz
(with TAPE set to Cr02/ METAL or set to NOFIM)
Headphones jack (stereo miniiacki
Load impedance 8-3000
Wired headphones:
10 mw+1o rrrw at Dc operation (16 0)
Wireless headphone receiver:
10 mw+1o mW at DC operation (16 0)
Wireless headphone receiver:
3 V DC, two size AA (H6) batteries
Main unit:
3 V DC. two size AA (R6) batteries

Battery lile
Maint unit
| Wireless
with wire ess . . headphone
Wlth wlred

headphone Receiver

receiver headphones
Sony alkaline Approx. 10 Approx. 11 Approx. 50
battery AM3 (N) hours hours hours
Sony battery Approx. 3.5 Approx. 20
SUM-3 (NS) hours ppm 4 "W" hours

Fur maximum perlormance we recommend the use of alkaline batteries.

Dimensions

Weight

Accessories supplied

Main unit:
Approx. 91 x114 x 41 mm (35/,3 x 4V2 x1515 inches)
(th/d) incl, projecting pans and controls
Main unlt:
Approx. 185 g (6.6 oz) incl. batteries, excl. other
accessories
Wireless headphone receiver:
Approx. r95 9 (6.9 oz) incl. batteries, excl. other
accessories
Wireless headphone recelver (open-air type) (1).
Bell clip (1)

Design and specifications subject to change without notice,

Accessorles not supplied
Sony alkaline battery Am (Ni
Headphones MDFI-M, MDH-E557

Additional wireless headphone receiver can be purchased lcr multiple users
applications. To order an additional wireless headphone receiver (Part 3:
1465-99941) contact you local Sony Sewlce Center or call (315) 891-2553 and use

you Master Card or Visa,"

Your dealer may not handle some ol the optional accessories listed above.

Please ask the dealer lor detailed information.

CASSETTE PLAYER
S ONY;

Page 2

~WM -WX5O

TABLE OF CONTENTS
Section Title Page
Spacificau'ons .............................................................. 1
1.GENERAL
Features .....

Precautions -
Notes on Using the Wireless Headphone Receiver--
Pans Identification ..........................................
Installing Batteries ' '~
Tape Playback """"
Maintenance ...........................

2. DISASSEMBLY

3. BLOCK DIAGRAM ................................................... 7
4, ADJUSTMENTS ..................................................... 9
5. DIAGRAMS

5-1. Semiconductor Lead Layout -
5-2. Printed Wiring Boards -
5-3. Schematic Diagram ~~~~~

s. EXPLODED VIEWS ------------------------------------------------ 16

7. ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18

Flexible circuit Board Repairing

0 Keep the temperature of the soldering iron around
270°C during repairing.

0 Do not touch the soldering iron on the same conduc-
tor of the circuit board (within 3 times).

0 Be careful not to apply force on the conductor when
soldering or unsoldering.

Notes on chip component replacement

0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

[Precaution when replacing MOTOR (M901)]

1. Since motor (M901) manufactured by KATSURAGAWA or
SANKYO has been used for this model, please add or eliminate
R601 as follows :

Manufactured by KATSURAGAWA : R601 should not be
mounted. (Should be eliminated.)
Manufactured by SANKYO : R601 should be moumed, (Should
be added.)

2. Refer to figure 1 below for judgment.

7 : Manufactured by KATSURAGAWA

: Manufactured by SANKYO

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-

LISHED 3! SONY.