Sony SPP-933 - 900mhz Cordless Telephone, Service Manual

– 2 –

TABLE  OF  CONTENTS

1.

GENERAL

Identifying the Parts ........................................................

3

Setting Up the Base Phone .............................................

3

Preparing the Battery Pack .............................................

4

Making Calls ...................................................................

5

Receiving Calls ...............................................................

5

Telephone Features .........................................................

6

2.

DISASSEMBLY

.........................................................

9

3.

TEST  MODE

Base Unit ......................................................................... 12
Handset ............................................................................ 14

4.

ELECTRICAL  ADJUSTMENTS

Base Unit ......................................................................... 15
Handset ............................................................................ 17

5.

DIAGRAMS

5-1. Block Diagram  – BASE UNIT Section (1/2) – ............. 19
5-2. Block Diagram  – BASE UNIT Section (2/2) – ............. 21
5-3. Block Diagram  – HANDSET Section – ........................ 23
5-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 25

5-5. Printed Wiring Board  – BASE RF Section – ................ 26
5-6. Schematic Diagram  – BASE RF Section – ................... 27
5-7. Printed Wiring Boards  – BASE MAIN Section – ......... 29
5-8. Schematic Diagram  – BASE MAIN Section – ............. 31
5-9. Printed Wiring Board  – BASE KEY Section – ............. 34
5-10. Schematic Diagram  – BASE KEY Section – ................ 35
5-11. Printed Wiring Board  – HAND RF Section – ............... 36
5-12. Schematic Diagram  – HAND RF Section – .................. 37
5-13. Printed Wiring Board   – HAND MAIN Section – ........ 39
5-14. Schematic Diagram  – HAND MAIN Section – ............ 41
5-15. IC Pin Function Description ........................................... 45

6.

EXPLODED  VIEWS

................................................ 47

7.

ELECTRICAL  PARTS  LIST

............................... 49

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.

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  PUB-
LISHED  BY  SONY.

ATTENTION  AU  COMPOSANT  AYANT  RAPPORT

À  LA  SÉCURITÉ!

LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  

0

SUR  LES  DIAGRAMMES  SCHÉMATIQUES  ET  LA  LISTE
DES  PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ
DE  FONCTIONNEMENT.  NE  REMPLACER  CES  COM-
POSANTS  QUE  PAR  DES  PIÈCES  SONY  DONT  LES
NUMÉROS  SONT  DONNÉS  DANS  CE  MANUEL  OU
DANS  LES  SUPPLÉMENTS  PUBLIÉS  PAR  SONY.