Sony wm fx 611 service manual

Page 1

WM-FX611

SERVICE MANUAL

French Model

Model Name Using Similar Mechanism WM~FX613/FX615

Tape Transport Mechanism Type MT-WMEX510-112

SPECIFICATIONS

Radio section

General

Frequency range
FM : 875- 108MHz
AM : S31- l,602kHz

Tape section
Frequency response
(Dolby* NR off)

Playback : 20- 18,000Hz
Output

Headphones ( n jack)

Load impedance 8- 300 ohms
Power output

SmW + SmW (l6 ohms)

* Dolby noise reduction
manufactured under license
from Dolby Laboratories
Licensing Corporation,
DOLBY and the double-D
symbol D0 are trademarks of
Dolby Laboratories Licensing
Corporation

Power requirements
1.5V
Rechargeable battery
One R6 (size AA) battery
Dimensions (w/h/d)
Approx. 108.9X79.5><26.lmm,
incl. projecting parts and controls

Mass Remove the rechargeable battery it
Approx. 1453 inserted and attach the battery Case.
Approx. 220g IHCI- Connect the AC power adaptor
rechargeable battery, (AC-EISHG not supplied) to the DC
headphones and cassette IN 1.5V of the battery case and to

the mains Do not use any other AC

Su lied accessories
pp power adaptor.

Battery case (1)

Stereo headphones (1)

Battery charger (I) w Polarity or
Rechargeable battery (NC-6WM, 5 9
1.2V, 600 mAh, Ni-Cd) ( t)

Carrying pouch (1)

Design and specifications are subject to

change without notice, _ Continued on page 2 _

RADIO CASSETTE PLAYER
S 0 NY;

Page 2

Dry Battery

Battery llfo gApprox. hours)
Sony Sony
alkaline R6?
LRo 380) (SR)

Tape playback IS 345

Radio reception 22 7

For maximum performance we recommend
that you use an alkaline battery,

Notes

- Do not charge a dry battery.

- when you do not use the Walkman for a long
time, remove the battery to avoid any damage
caused by battery leakage and subsequent
corrosion.

Rechargeable Battery

1. Insert the rechargeable battery (NCA6WM)
into the charger with correct polarity.

2. Plug in the charger to the mains.
Full charging takes about 2.5 homsl

3. Insert the fully charged battery into the
rechargeable battery com partment.

When to charge the battery
Charge the battery when the BA'IT lamp dims.
You can charge the battery about 300 times

Battery llfe (Approx. hours)
Rechargeable battery gNC-éWM)
Tape playback 5

20 (with Sony

alkaline LR6 156)
Radio reception 7.5

2.8 (with Sony

alkaline LR6 {SO 2

Notes

- Do not tear off the film on the rechargeable
battery.

- Use the Sony NC-oWM rechargeable battery
only with the supplied battery charger or with
the separately sold battery charger for Seny
NC-GWM.

' Do not leave the charger plugged in for more
than 20 hours Overcharging may damage the
rechargeable battery

' The battery charger and the rechargeable
battery may become warm during charging.
but it is not a problem.

TABLE OF CONTENTS

Specifications ............ . ............ . ....... ....... ....... .........1
1, GENERAL .......... . ........ ........ .. ............ ................3
2. SERVICE NOTEwm ........ . ........... ...... ....4
3. DISASSEMBLY

3-ll Bracket Assembly and Cassette Holder Assembly 6

3.2 MainBoardn .......... ..... --6

3.3_ Tunergofld................... ........ .......... ...... ....7
4. MECHANICAL ADJUSTMENT-"m"- .......... ....... ...3
5. ELECTRICAL ADJUSTMENT ............. .. ............. .....g
6. EXPLANATION OF lC TERMINALS ---------- 10
7. DIAGRAMS

7-]. Printed Wiring Boards (Tuner Section) - 13

7-2. Schematic Diagram (Tuner Section) ~~ - 15

7 -3. Schematic Diagram (Main Section) - 19

7-4, Printed Wiring Boards (Main Section) - Z3

EXPLODED VIEWS

8-1. Cabinet and Tuner Board Section - ~ 30
8-2. Main Board Section ..... .......... . 31
8-3. Mechanism Section (MT-WMEXSIO-llZ) ----- '- ------- 32
ELECTRICAL PARTS LIST .......... ....... 33

Flexible Circuit Board Repairing

0

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).

Be careful not to apply force on the conductor, when
soldering or unsolderingr

Notes on chip component replacement

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