Read Sony DAV-IS50 / SA-WSIS50 Service Manual online
TABLE OF CONTENTS
1.
SERVICING NOTES
.............................................. 3
2. GENERAL
................................................................... 6
3. DISASSEMBLY
3-1. Disassembly
Flow
(SA-WSIS50)
.................................... 7
3-2. AMP
Block
...................................................................... 7
3-3. AMP
Board
...................................................................... 8
3-4. DSP
Board
....................................................................... 9
3-5. POWER
Board
................................................................. 9
3-6. Loudspeaker (16 cm) (Sub Woofer) (SP001) .................. 9
3-7. Loudspeaker (12 cm) (Middle) (SP002) .......................... 9
3-7. Loudspeaker (12 cm) (Middle) (SP002) .......................... 9
4. DIAGRAMS
4-1. Block Diagram – DSP Section – ...................................... 10
4-2. Block Diagram – AMP Section – ..................................... 11
4-3. Block Diagram – POWER SUPPLY Section – ................ 12
4-4. Printed
4-2. Block Diagram – AMP Section – ..................................... 11
4-3. Block Diagram – POWER SUPPLY Section – ................ 12
4-4. Printed
Wiring
Board
– DSP Board (Component Side) – ................................... 14
4-5. Printed
Wiring
Board
– DSP Board (Conductor Side) – ..................................... 15
4-6. Schematic Diagram – DSP Board (1/2) – ........................ 16
4-7. Schematic Diagram – DSP Board (2/2) – ........................ 17
4-8. Printed
4-7. Schematic Diagram – DSP Board (2/2) – ........................ 17
4-8. Printed
Wiring
Board
– AMP Board (Component Side) – .................................. 18
4-9. Printed
Wiring
Board
– AMP Board (Conductor Side) – .................................... 19
4-10. Schematic Diagram – AMP Board (1/2) – ....................... 20
4-11. Schematic Diagram – AMP Board (2/2) – ....................... 21
4-12. Printed Wiring Boards – SPEAKER and
4-11. Schematic Diagram – AMP Board (2/2) – ....................... 21
4-12. Printed Wiring Boards – SPEAKER and
CONNECTOR Board – ................................................... 22
4-13. Schematic Diagram – SPEAKER and
CONNECTOR Board – ................................................... 23
4-14. Printed Wiring Board – POWER Board – ....................... 24
4-15. Schematic Diagram – POWER Board – .......................... 25
4-16. Printed Wiring Board – S-AIR Board – ........................... 26
4-17. Schematic Diagram – S-AIR Board – .............................. 27
4-15. Schematic Diagram – POWER Board – .......................... 25
4-16. Printed Wiring Board – S-AIR Board – ........................... 26
4-17. Schematic Diagram – S-AIR Board – .............................. 27
5.
EXPLODED VIEWS
5-1. Speaker Cabinet Assy (SA-WSIS50) ............................... 39
5-2. AMP Section (SA-WSIS50) ............................................ 40
5-3. POWER Board Section (SA-WSIS50) ............................ 41
5-2. AMP Section (SA-WSIS50) ............................................ 40
5-3. POWER Board Section (SA-WSIS50) ............................ 41
6.
ELECTRICAL PARTS LIST
............................... 42
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
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.
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.
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 PUBLISHED BY SONY.
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
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 CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
7
0.15 F
AC
voltmete
(0.75 V)
voltmete
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
2
SA-WSIS50
Click on the first or last page to see other DAV-IS50 / SA-WSIS50 service manuals if exist.