Sony Walkman WM-SR10 Скачать руководство пользователя страница 2

Страница: 2 / 26

TABLE OF CONTENTS

WM-SR10

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.

Flexible Circuit Board Repairing

• Keep the temperature of soldering iron around 270˚C

during repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

Unleaded solder

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40

C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350

Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

1. SERVICE NOTE

............................................................... 3

2. GENERAL

.......................................................................... 4

3. DISASSEMBLY

3-1. Front Cabinet Assy .......................................................... 5
3-2. MAIN Board ................................................................... 6
3-3. Mechanism Deck (MT-WMGX221-175) ....................... 6
3-4. Belt (CAP), M601, HRP901, HE901 .............................. 7
3-5. Cassette Holder Sub Assy ............................................... 7

4. MECHANICAL ADJUSTMENT

.................................. 8

5. ELECTRICAL ADJUSTMENT

.................................... 8

6. DIAGRAMS

...................................................................... 10

6-1. Block Diagram – Tuner Section – ................................. 11
6-2. Block Diagram – Main Section – ................................. 12
6-3. Printed Wiring Boards .................................................. 13
6-4. Schematic Diagram – MAIN Board (1/2) – .................. 14
6-5. Schematic Diagram – MAIN Board (2/2) – .................. 15
6-6. IC Block Diagrams ....................................................... 16

7. EXPLODED VIEWS

7-1. Overall Section ............................................................. 17
7-2. Cabinet (Front) Section ................................................. 18
7-3. Mechanism Deck Section-1 (MT-WMGX221-175) ..... 19
7-4. Mechanism Deck Section-2 (MT-WMGX221-175) ..... 20

8. ELECTRICAL PARTS LIST

....................................... 21