Sony SA-VA10 Manuale utente

— 1 —

MICROFILM

SA-VA10

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

SERVICE MANUAL

SPECIFICATIONS

HOME THEATER ACTIVE

SPEAKER SYSTEM

• REAR SPEAKER

— Continued on next page —

• FRONT SPEAKER SYSTEM

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— 2 —

TABLE OF CONTENTS

1. GENERAL .................................................................... 4

2. DISASSEMBLY

2-1. Amplifier Assembly .............................................................5

3. DIAGRAMS

3-1. IC Pin Function

• IC501 System Control (µPD78042FGF-016-3B9) ...........6

3-2. Circuit Boards Location .......................................................7

3-3. Schematic Diagram ..............................................................9

3-4. Printed Wiring Board..........................................................13

3-5. IC Block Diagrams ............................................................. 17

4. EXPLODED VIEWS

4-1. Cabinet (L) Assembly......................................................... 19

4-2. Cabinet (R) Assembly ........................................................ 20

4-3. Amplifier Section ............................................................... 21

4-4. Rear Speaker Section (SS-SR151) ..................................... 22

5. ELECTRICAL PARTS LIST ..................................23

SERVICE NOTE

[FL ALL LIGHT UP MODE]

While pressing the MASTER VOL+ button, press the POWER

button.

[AUTO POWER SAVE MECHANISM]

A part circuit on this will stop to economize in power if it has no

signal after more than three minutes.

If a sound is input again, the normal circuit will operated.

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SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing safety checks before releasing the set to the customer:

Check the antenna terminals,metal trim, “metallized” knobs,screws,

and all other exposed metal parts forAC leakage. Check leakage as

described below.

LEAKAGE

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 microampers).

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.

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 aVOM

or battery-operatedAC 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 pas-

sive VOM that is suitable. Nearly all battery operated digital

multimeters that have a 2V AC range are suitable. (See Fig. A)

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!

LESCOMPOSANTS IDENTIFIÉS PARUNE MARQUE!SUR

LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES

PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE

FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS

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 !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.

Fig. A. Using an AC voltmeter to check AC leakage.

To Exposed Metal

Parts on Set

0.15

F1.5k

Ω

voltmeter

(0.75V)

Earth Ground

MODEL IDENTIFICATION

— BACK PANEL —

Parts No.

4-982-965-0 : US, E1 model

4-982-965-1 : Canadian model

4-982-965-2 : AEP, E2, German model

4-982-965-3 : UK model

4-982-965-4 : Australian model

• Abbreviation

E1 : Central and South America model

E2 : Singapore, Malaysia model

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SECTION 1

GENERAL

LOCATION OF CONTROLS

Front panel Remote

1MUTING button

2Operate a Sony TV buttons

3DOLBY SUR button

4HALL button

5REAR +/– buttons

6CENTER +/– buttons

7BASS +/– buttons

8BALANCE L/Rbuttons

9INPUT 1 button

0INPUT 2 button

!¡ POWER button

!™ GAME button

!£ SUR OFF button

!¢ S. WOOFER +/– buttons

!∞ TEST TONE button

!§ DELAY button

!¶ TREBLE +/– button

!° RESET button

!ª SUPER WOOFER MODE buttons

(1, 2, OFF)

@º MASTER VOL buttons

1STANDBY indicator (red)

2POWER indicator (red/green)

3POWER button

4INPUT button

5SURROUND button

6CENTER MODE button

7S. WOOFER button

8MASTER VOL buttons

!£

!™

!¡

0@º

!¢

!¶

!•

!ª

!§

!∞

This section is extracted from

instruction manual.

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— 5 —

SECTION 2

DISASSEMBLY

Four screws

(BVTP4x20)

Flat type wire

(27core)

Three screws

(BVTP4x20)

Three screws

(BVTP4x20)

Seven

screws

(BVTP3x10)

Connector

(CN903)

Grille flame

assembly

Back panel (L)

Two screws

(BVTT4x20)

Connector

(CN602)

2-1. AMPLIFIER ASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

!¡

Amplifier assembly

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I/O Function

• IC501 System Control (µPD78042FGF-016-3B9)

Pin No.

3-1. IC PIN FUNCTION

Pin Name

SECTION 3

DIAGRAMS

—

1 to 7

37 to 40

7G to 1G

VDD

POWER RY

FUNC 1/2

PLO/DELAY-CLK

PLO/DELAY-CE

PLO/DELAY-DATA

FRONT MUT

CENTER EXT MUT

S/W MUT

RESET

REAR MUT

CENTER MUT

AVSS

CENTER EXT/INT

—

MODE

VOL SCL

—

SW1

KEY 1

KEY 0

AVDD

AVREF

STOP

XT2

VSS

S/W BOOST

S/W C1 to S/W C4

CENTER EXT-SW

FL grid control

Power supply terminal (+5V)

Power relay control

Input select control (L: input 2 H: input 1)

Prologic/Delay IC (IC103) serial control

Mute control (“L”=Mute)

System reset

Mute control (“L”=Mute)

Ground for A/D convertor

Center speaker switching control

Not used (Connected to ground)

Audio processor IC (IC203, 204) serial control

Not used (Connected to ground)

Audio signal detection (L: Sound input H: No sound input)

Key input (analog)

Analog power supply forA/D convertor

Reference voltage for A/D convertor (Connected to +5V)

Voltage detect (AC off)

Not used (Open)

Ground

Oscillation crystal (5 MHz) for main system clock

Sub woofer boost control (H: off L: on)

Super woofer level control

Connecting detection of external center output

(L: Connecting signal input H: No connecting signal input)

• Abbreviation

FL : Fluorescent indicator tube

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— 7 —

Cabinet (L)

POWER board

(including

A –

T2 board

T1 board

DISPLAY board

P.S. board

MAIN board

(including

Cabinet (R)

R-SP board

I/O Function

Pin Name

—

SIRCS

VOL SDA-2

VOL SDA-1

—

STANDBY LED

OPRATE LED

READY LED

VDD

S24 to S27

VLOAD

S6 to S1

10G to 8G

Pin No.

42, 43

53 to 70

72 to 77

78 to 80

—

Not used (Connected to ground)

Remote control signal input

Audio processor IC (IC203, 204) serial control

Not used (Connected to ground)

Internal connecting (Connected to ground)

LED control (L: Lighting)

Power supply (+5V)

FL segment control

Power supply (–25V) for indication control

FL segment control

FL grid control

3-2. CIRCUIT BOARDS LOCATION

NOTE

rA : POW-R board

rB : POW-L board

rC : POW-SR board

rD : POW-CN board

rE : POW-SW board

rF : INPUT board

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

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