Sony wm f 2097 service manual

Page 1

SERVICE MANUAL

US Model
Canadian Model
AEP Model

UK Model

WM-BF608
MF-WMBF608

Model Name Using Similar Mechanism
Tape Transport Mechanism Type

SPECIFICATIONS

Radio soctlon
Frequency range
3 7. - 1 7. MH .
in: 2309-131ng22} US. Canadian model
FM: 8715-1073 MHZ
AM: 531 -1,602 kHz Oher "Dde's
Antenna
FM: Headphones oord antenna
AM: Builtvin lerrits bar antenna

Recordlng sectlon
Recording system
rack 2-channel stereo
Input
Microphone input (stereo minijack)
(PLUG IN POWER) sensitivity 0.77 mV (-60 dB) for
lower impedance microphone

Tape player soctlon and general

Frequency response (DOLBY NFl oil)
30 Hz- 15 kHz (with the PB E0 selector set to
NORMAL or CrOz/METAL)

Output
Headphones (stereo minijaok)
loadtimpedance 8 - 3000

Power output
5 mW + 5 mw at DC operation, 160

Power requirements

1.5 V DC

Rechargeable battery

One R6 (size AA) battery

DC IN 15 V jack accepts:

- Sony AC-DlM AC power adaptor (optional)
available in the United Kingdom for use on 240 V
AC, 50 Hz
available in other European countries tor use on
220 V AC, 50 HZ
available in other countries for use on 100-120 V
AC or 220-240 V AC. 50 or 60 Hz

- Sony DOC-70 (optional) tor use with 12 V car

battery
Battery lite (hours)
my PI-thk ladle mum hunt the

reception bullun ndlo

Sonysumm) Approx? Approx,2.5 wort 1.5

Sony AM3 (N) Approx. 5 Approx. 7 Appm. 3

For maximum periormanoe we recommend the use at
alkaline batteries.

Dimensions
Approx. 107.6 x 78.2 x 33.7 mm (wlhld)
(4V4 x 3'], x We Inches)
incl. projecting parts and controls
Weight
Approx. 2109 (8 oz.) not incl. battery and other
accessories
Accessories supplied
Lithium battery (1) Microphone (1)
Microphone stand (1) Bell clip (1)
For the Unlted Klngdem and other European
countrles
Stereo headphones (open-air type, 1)
For other countrles
Stereo earphones (open-air type, 1)
US, Canadian model
Carrying pouch (1) Stereo headophones (open-air type,1)

Ear adaptors are attached on the
stereo earphones. It the
earphones do not lit your ears.

detach the ear adaptors.

Note on stereo
earphone

Put the cord behind
your neck. The knot
cannot be moved.

Donot

Design and specifications subject to change without
notice.

- Continued on page 2 -

RADII] CASSETTE-UMBER
SONY;

Page 2

WM-F2097

Note
This appliance contorms with EEC directives 76/889
and 82/499 regarding interference suppresslon.

Optional accessorles

AC power adaptor AC-DtM

Battery charger BC-7L. BIS-7K
Rechargeable battery NOGWM, NC-SWM
Car battery cord DOC-70

Lithium battery CR 2016

Vour dealer may not handle some at the above listed
optional acoessoriesPlease ask the dealer (or detailed
inlormalion about the optimal accessories avallable in
your counl'yr

Note
It a car battery cord or an AC
power adaptor not manuiactured

by Sony is used, a iuse must be 2
installed in the battery cord or
the adaptor. and the polarity oi

the plug must be as illustrated.

Flexible Circuit Board Repairing

Section

Specifications

TABLE OF CONTENTS

Title Page

GENERALM

DISASSEMBLY ................ . ................................... 5
ADJUSTMENTS ........................................ .. ........ 6
DIAGRAMS

4-1. Semiconductors Lead Layout ---------------------------- 9
4-2. Printed Wiring Board -Audio Sectionw -------- 10
4-3. Schematic Diagram --Audio Section- v13
44. Schematic Diagram -Radio Section- ~16
4-5, Printed Wiring Board -Radio Section 19
4-6. 1C Block Diagram ....................... . ..... .. .22

EXPLODED VIEWS

5_1_ Cabinet .......................................................... 24
5.2. Mechanismvl ...... .......................................... 25
5.3. Mechanism72 ................................................... 26
5-4, Mechanism-3 ................................................... 27
ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 28

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,