Table Of Contents - Sony SPP-A973 Service Manual

Note for Replacement of the ASIC Board
The ID is written in the ASIC board.
When replacing the ASIC board, the U4001 on BASE MAIN board
and U1001 on HAND MAIN board should be replaced together as
a pair.
Part No. : X-3378-160-1 ASIC ASSY (one assy of two parts)
- HAND MAIN BOARD (SIDE B) -
U1001
- BASE MAIN BOARD (SIDE A) -
U4001

TABLE OF CONTENTS

1. GENERAL
Read This First ........................................................................ 3
Checking the Package Contents .............................................. 3
Setting Up the Base Unit ......................................................... 3
Preparing the Battery Pack ...................................................... 4
Entering the Area Code ........................................................... 5
Identifying the Parts ................................................................ 5
Making Calls ........................................................................... 6
Receiving Calls ........................................................................ 7
Phone Directory ....................................................................... 7
Setting the Ringer Type ........................................................... 8
Paging ...................................................................................... 8
Setting Up the Answering Machine ......................................... 9
Playing Back Messages ......................................................... 10
Selecting the Announcement Only Mode .............................. 11
Screening Calls ...................................................................... 11
Recording a Memo Message ................................................. 11
Operating From an Outside Phone ........................................ 11
Understanding the Caller ID Service ..................................... 12
Looking at the Caller ID List ................................................ 12
Using the Caller ID List ........................................................ 13
Using "Caller ID With Visual Call Waiting" Service ............ 14
Mounting the Base Unit on a Wall ........................................ 14
2. DISASSEMBLY
2-1. Case (Rear) ........................................................................ 15
2-2. RF Unit (HS), Hand Main Board ...................................... 15
2-3. Base (Bottom) ................................................................... 16
2-4. Base Main Board ............................................................... 16
2-5. RF Unit (BU) .................................................................... 17
2-6. Base Key Board ................................................................ 17
2-7. I-TAD Board ..................................................................... 18
3. ELECTRICAL ADJUSTMENTS
3-1. Handset .............................................................................. 19
3-2. Base Unit ........................................................................... 20
4. DIAGRAMS
4-1. Block Diagram -Base Unit Section- ................................ 21
4-2. Block Diagram -Handset Section- ................................... 23
4-3. Schematic Diagram -Base Main Section (1/2)- ............... 25
4-4. Schematic Diagram -Base Main Section (2/2)- ............... 27
4-5. Printed Wiring Board -Base Main Section- ..................... 29
4-6. Printed Wiring Board -I-TAD Section- ............................ 34
4-7. Schematic Diagram -I-TAD Section- .............................. 35
4-8. Printed Wiring Board -Base Key Section- ....................... 37
4-9. Schematic Diagram -Base Key Section- .......................... 39
4-10. Printed Wiring Board -Hand Main Section- .................... 41
4-11. Schematic Diagram -Hand Main Section- ....................... 43
5. EXPLODED VIEWS
5-1. Handset Section ................................................................. 47
5-2. Base Unit Section .............................................................. 48
6. ELECTRICAL PARTS LIST
- 2 -
........................................ 49