– 2 –
TABLE OF CONTENTS
1.
GENERAL
.................................................................... 3
2.
DISASSEMBLY
.......................................................... 21
3.
TEST MODE
3-1. Base Unit ......................................................................... 23
3-2. Handset ............................................................................ 25
4.
ELECTRICAL ADJUSTMENTS
4-1. Base Unit Section ............................................................ 27
4-2. Handset Section ............................................................... 29
5.
DIAGRAMS
5-1. Schematic Diagram – DSP Section – .............................. 35
5-2. Printes Wiring board – Base Unit/DSP Section – ............ 37
5-3. Schematic Diagram – Base Unit Section – ...................... 39
5-4. Schematic Diagram – Handset Section – ........................ 42
5-5. Printed Wiring board – Handset Section – ...................... 45
5-6. IC Pin Function Description ............................................ 48
6.
EXPLODED VIEWS
................................................. 52
7.
ELECTRICAL PARTS LIST
.................................. 54
SERVICING NOTES
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
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.
Summary of Contents for SPP-A400 - Cordless Telephone With Answering Machine
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