Sony CFS-828SMK2, Service Manual

2

TABLE OF CONTENTS

1. GENERAL

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

2. DISASSEMBLY

2-1.   Cabinet (Front) Assy, Cabinet (Rear) Assy ......................... 4
2-2.   Power and DC IN Boards .................................................... 5
2-3.   Mechanism Deck ................................................................. 5
2-4.   H/P, LED2, Maxi Bass, VOL and Main Boards .................. 6
2-5.   F/T and Tuner Boards .......................................................... 6
2-6.   Jog and LED1 Boards ......................................................... 7
2-7.   REC SW Board, Belt and Motor Assy (W) (M301) ........... 7

3. DIAL POINTER SETTING

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

4. MECHANICAL ADJUSTMENTS

................................. 9

5. ELECTRICAL ADJUSTMENTS

Tape Section ............................................................................ 9
Tuner Section ......................................................................... 10

6. DIAGRAMS

6-1.   Circuit Boards Location .................................................... 12
6-2.   Block Diagram .................................................................. 13
6-3.   Printed Wiring Boards – Tuner Section – ......................... 14
6-4.   Schematic Diagram – Tuner Section – .............................. 15
6-5.   Printed Wiring Boards – Main Section – .......................... 16
6-6.   Schematic Diagram – Main Section (1/2) – ...................... 17
6-7.   Schematic Diagram – Main Section (2/2) – ...................... 18
6-8.   Printed Wiring Boards – Power Section – ......................... 19
6-9.   Schematic Diagram – Power Section – ............................. 20

7. EXPLODED VIEWS

7-1.   Cabinet (Rear) Section ...................................................... 23
7-2.   Cabinet (Front) Section-1 .................................................. 24
7-3.   Cabinet (Front) Section-2 .................................................. 25
7-4.   Mechanism Deck Section-1 .............................................. 26
7-5.   Mechanism Deck Section-2 .............................................. 27
7-6.   Mechanism Deck Section-3 .............................................. 28
7-7.   Speaker Section ................................................................. 29

8. ELECTRICAL PARTS LIST

........................................ 30

SAFETY-RELATED  COMPONENT  WARNING!!

COMPONENTS  IDENTIFIED  BY  MARK  

0

  OR  DOTTED  LINE

WITH  MARK  

0

  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  PUBLISHED  BY  SONY.

Notes on Chip Component Replacement

•

Never reuse a disconnected chip component.

•

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

CFS-828SMK2

•

 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°C.
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.