Sony SPP-A985 Service manual

SPP-A985

SERVICE MANUAL

Ver 1.0 2000.12

SPECIFICATIONS

General

Frequency band

902 - 928 MHz

Operating channel

30 channels

Dial signal

Tone, 10 PPS (pulse) selectable

Supplied accessories

Telephone line cords (3) Handset AC power adaptor (AC-T128) Wall bracket for base unit Base unit Rechargeable battery pack (BP-T23) Belt clip

US Model

Base unit

Power source

DC 9V from AC power adaptor AC-T131

Battery charging time

Approx. 24 hours

Dimensions

Approx. 7 3⁄8 x 2 3⁄4 x 9 1⁄8 inches (w/h/d), antenna excluded (approx. 186 x 68 x 229 mm) Antenna: Approx. 4 3⁄4 inches (approx. 120 mm)

Mass

Approx. 1 lb 8 oz (approx. 664 g), wall bracket excluded

Handset

Power source

Rechargeable battery pack BP-T23

Battery charging time

Approx. 12 hours

Battery life

Standby: Approx. 7 days Talk: Approx. 7 hours

Dimensions

Approx. 2 3⁄8 x 7 1⁄2 x 1 13⁄16 inches (w/h/d), antenna excluded (approx. 58 x 177 x 46 mm) Antenna: Approx. 2 7⁄8 inches (approx. 72 mm)

Mass

Approx. 9.5 oz (approx. 270 g), battery included

Answering machine

Maximum recording time

About 15 minutes, using incorporated IC

Greeting message

Up to 90 seconds per each

Incoming and Memo message

Up to 4 minutes per message

Design and specifications are subject to change without notice.

2-LINE CORDLESS TELEPHONE

TABLE OF CONTENTS

Specifications ........................................................................... 1

1. GENERAL

Identifying the Parts ............................................................. 3

Checking the Package Contents ........................................... 4

Setting Up the Base Phone ................................................... 4

Preparing the Battery Pack ................................................... 5

Entering the Area Code ........................................................ 5

Making Calls ........................................................................ 6

Receiving Calls .................................................................... 8

Speed Dialing ....................................................................... 8

Phone Directory................................................................... 9

Setting the Ringer Type ...................................................... 10

Switching the Phones During a Call....................................11

Talking Between the Phones (Intercom) .............................11

Transferring a Call...............................................................11

Setting Up the Answering Machine.................................... 12

Playing Back Messages ...................................................... 14

Selecting the Announcement Only Mode........................... 14

Screening Calls ................................................................... 14

Recording a Memo Message .............................................. 15

Operating From an Outside Phone ..................................... 15

Understanding the Caller ID Service.................................. 15

Looking at the Caller ID List ............................................. 16

Using the Caller ID List ..................................................... 16

Using “Caller ID with Call Waiting” Service..................... 17

Note for Replacement of the ASIC Board

The ID is written in the ASIC board. When replacing the ASIC board, the U3003 on BASE MAIN board and U1001 on HAND MAIN board should be replaced together as a pair.

NOTE FOR REPLACEMENT OF THE EEPROM

When replacing the EEPROM, U3007 on the BASE MAIN board and U1006 on HAND MAIN board should be replaced together as a pair.

– BASE MAIN BOARD (SIDE A) –

U3007

U3003

2. DISASSEMBLY

2-1. H/S Rear .................................................................... 18

2-2. “RF Unit ASSY, Hand”, Hand Main Board............... 18

2-3. Base Bottom ............................................................. 19

2-4. Base Main Board ...................................................... 19

2-5. RF Unit ASSY, Base .................................................. 20

2-6. Base Key Board, LCD Board .................................... 20

3. ELECTRICAL ADJUSTMENTS

Base Unit ............................................................................ 21

Handset .............................................................................. 23

4. DIAGRAMS

4-1. Block Diagram – Base Unit Section –....................... 25

4-2. Block Diagram– Handset Section –........................... 27

4-3. Schematic Diagram – Base Main Board (1/2) –....... 29

4-4. Schematic Diagram – Base Main Board (2/2) –....... 31

4-5. Printed Wiring Board– Base Main Board (1/2) –..... 33

4-6. Printed Wiring Board– Base Main Board (2/2) –..... 35

4-7. Printed Wiring Board– Base Key Board (1/2) –....... 37

4-8. Printed Wiring Board– Base Key Board (2/2) –....... 39

4-9. Schematic Diagram – Base Key Board – ................. 41

4-10.Printed Wiring Board – Hand Main Board –............. 43

4-11.Schematic Diagram – Hand Main Board (1/2) – ...... 45

4-12.Schematic Diagram – Hand Main Board (2/2) – ...... 47

5. EXPLODED VIEWS

5-1. Handset Section ......................................................... 49

5-2. Base Unit Section ...................................................... 50

6. ELECTRICAL PARTS LIST .................................... 51

– HAND MAIN BOARD (SIDE B) –

U1001

U1006

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 damaged 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 SHO WN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

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