Sony SPP-935 Service manual

SPP-935

SERVICE MANUAL

SPECIFICATIONS

US Model

MICROFILM

CORDLESS TELEPHONE

TABLE OF CONTENTS

1. GENERAL

Step 2 ............................................................................... 3

Step 3 ............................................................................... 4

Making calls .................................................................... 5

Receiving calls ................................................................ 6

Speed dialing ................................................................... 7

Setting the ringer type..................................................... 8

Switching the phones during a call................................. 9

Talking between the handset and

the base phone (Intercom) .............................................. 10

Having a three-way conference ...................................... 11

Mounting the base phone on a wall ................................ 11

2. DISASSEMBLY.......................................................... 12

3. TEST MODE

3-1. Base Unit ......................................................................... 14

3-2. Handset ............................................................................ 15

4. ELECTRICAL ADJUSTMENTS

4-1. Base Unit Section............................................................ 16

4-2. Handset Section............................................................... 17

5. DIAGRAMS

5-1. Block Diagram – BASE UNIT Section –....................... 19

5-2. Block Diagram – HANDSET Section – ......................... 21

5-3. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 23

5-4. Printed Wiring Board

– BASE MAIN Board (Side A) – ................................... 25

5-5. Printed Wiring Board

– BASE MAIN Board (Side B) – ................................... 27

5-6. Schematic Diagram

– BASE MAIN Section (1/2) –....................................... 29

5-7. Schematic Diagram

– BASE MAIN Section (2/2) –....................................... 31

5-8. Printed Wiring board

– BASE KEY Section – .................................................. 33

5-9. Schematic Diagram

– BASE KEY Section – .................................................. 34

5-10. Schematic Diagram

– HAND MAIN Section – .............................................. 35

5-11. Printed Wiring board

– HAND MAIN Section – .............................................. 37

5-12. Printed Wiring board

– SHEET SWITCH Section –......................................... 39

5-13. IC Pin Function Description ........................................... 43

Flexible Circuit Board Repairing

• Keep the temperature of the 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

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 ! OR DOTTED LINE WITH MARK ! 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.

6. EXPLODED VIEWS ................................................. 45

7. ELECTRICAL PARTS LIST .................................. 47

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