Sony SPP-IM977, Service Manual

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TABLE  OF  CONTENTS

1.

GENERAL

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

3

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

4

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

5

Entering the Area code ....................................................

5

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

6

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

8

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

9

Caller ID Features ........................................................... 13

2.

DISASSEMBLY

......................................................... 17

3.

ELECTRICAL  ADJUSTMENTS

Base Unit ......................................................................... 20
Handset ............................................................................ 21

4.

DIAGRAMS

4-1. Block Diagram  – MAIN Section – ................................ 23
4-2. Block Diagram  – DISPLAY/

KEY SHIFT/POWER SUPPLY Section – ..................... 25

4-3. Block Diagram  – HANDSET Section – ........................ 27
4-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 29

4-5. Printed Wiring Board

– BASE MAIN Board (Component Side) – ................... 31

4-6. Printed Wiring Board

– BASE MAIN Board (Conductor Side) – ..................... 33

4-7. Schematic Diagram  – BASE MAIN Board (1/3) – ....... 35
4-8. Schematic Diagram  – BASE MAIN Board (2/3) – ....... 37
4-9. Schematic Diagram  – BASE MAIN Board (3/3) – ....... 39
4-10. Printed Wiring Board  – BASE KEY Board – ............... 41
4-11. Schematic Diagram  – BASE KEY Board – .................. 42
4-12. Printed Wiring Board   – HAND MAIN Board – .......... 43
4-13. Schematic Diagram  – HAND MAIN Board – .............. 45

5.

EXPLODED  VIEWS

................................................ 50

6.

ELECTRICAL  PARTS  LIST

............................... 52

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.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing 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.

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.

NOTE  FOR  REPLACEMENT  OF  THE  EEPROM

The ID cord is written in the EEPROM.
When replacing the EEPROM, U1011 on the BASE MAIN board
and U1006 on HAND MAIN board should be replaced together as
a pair.