Sony wm af 23 service manual

Page 1

SERVICE MANUAL

US Model

Radio

Power requirements

Battery lite
(Approximate hours)

Accessories supplied

Optional accessories

Model Name Using Similer Mechanism

WM-AF22

Tape Transport Mechanism Type

MF-WMAF23-O4

SPECIFICATIONS

FM: B7.6~108 MHZ

AM: 530-1710 kHz

3 V DC Batteries H6 (AA) x 2
BP-7OD rechargeable battery
External DC 3 V power sources

Playback FM
Sony Alkaline AM3 (N) 8 hrs, 30 hrs.
Rechargeable BP-7OO 2 hrs. 6 hrs,

Stereo headphones (Open-air type, 1) Beitclip (1)
Battery tube (1)
Rechargeable battery kit (Only ior WM-AF29)

Rechargeable battery (BP-700)/charger (BC-700) kit
BPCv700K

AC power adaptor AC-DZL

Car battery cord DOC-70

Battery case EBP

Stereo active speaker system SRS-SO. SIRS-50

Design and specifications subject to change without notice.

RAIIIII CASSETTE PLAYER

SONY;

Page 2

WM-AF23

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 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.

SECTION 1
DISASSEMBLY

Louti n and shape of claws

The symbols (0 -$) show the order to uncouple the
linkage of the claw, and names of the parts.

Rear Cabinet Assy

Front Cabinet Assy

Cassette Holder Any

N to: Follow the disassembly procedure the numerical order given.

To I: Precision Screwdrivers ( G) , width 03mm, 1.4mm, and 2.0mm)
Adhesive tape l-Zcm
Wedge (hand made)

Material . . . soft plastic (such as PVC) etc.
Sizes are for the reference.

6mm 2mm

3mm

10mm

0.3mm

Ill Cassette Holder Removal

00pm the cassette holder.

0 While pressing the edge of the cassette holder, pull up it
in order to take off the cassette holder.

OTake off the end of coil Spring with a precision screw-
driver (width: 0.8mm).

[2] Rear Cabinet Removal

0 Insert a precision screwdriver (width: 2,0mm) into the
slit of front cabinet, lift the front cabinet as shown in
the figure for making a clearance ( 9 ).

Insert a wedge in the clearance.