Sony SR16 Service manual

SA VA-500/SS-CN16/SR16

SERVICE MANUAL

Photo: SS-SR16

The SAVA-500 composed of the following table.

Front Speaker Main Unit
Center Speaker SS-CN16
Rear Speaker SS-SR16

Photo: SS-CN16 Photo: Main Unit

SPECIFICATIONS

US Model

Canadian Model

AEP Model

UK Model

E Model

(L-ch) (R-ch)

MICROFILM

– Continued on next page –

HOME THEATER ACTIVE SPEAKER SYSTEM

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. TEST MODE.............................................................. 8

5. DIAGRAMS

5-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 11

5-2. Printed Wiring Board – MAIN Board – ........................ 12

5-3. Schematic Diagram – MAIN Board (1/3) – ................... 13

5-4. Schematic Diagram – MAIN Board (2/3) – ................... 14

5-5. Schematic Diagram – MAIN Board (3/3) – ................... 15

5-6. Printed Wiring Boards – FILTER/REG/T2/T1/

STANDBY/AC-SW Boards – ......................................... 16

5-7. Schematic Diagram – FILTER/REG/T2/T1/

STANDBY/AC-SW Boards – ......................................... 17

5-8. Printed Wiring Board – AMP (POW-SR/POW-SW/

POW-CN/POW-LR/CONNECTOR) Board – ............... 18

5-9. Schematic Diagram – AMP (POW-SR/POW-SW/

POW-CN/POW-LR/CONNECTOR) Board – ............... 19

5-10. Printed Wiring Boards

– DISPLAY/LED/KEY Boards – ................................... 20

5-11. Schematic Diagram

– DISPLAY/LED/KEY Boards – ................................... 21

5-12. IC Pin Function Description ........................................... 24

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMA TIC 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.

6. EXPLODED VIEWS ................................................ 26

7. ELECTRICAL PARTS LIST ............................... 31

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE 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.

2

SECTION 1

SERVICING NOTES

MODEL IDENTIFICATION

– Rear view –

PART No.

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.

LEAKAGE TEST

The A C leaka ge from an y e xposed metal part to earth g round 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. Follo w 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 a
VOM or battery-operated AC voltmeter. The “limit” indica­tion is 0.75 V, so analog meters must have an accurate low­voltage scale. The Simpson 250 and Sanwa SH-63T rd are e x­amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V A C range are suit­able. (See Fig. A)

To Exposed Metal
Parts on Set

MODEL PART No.

US model 4-217-252-3

Canadian model 4-217-252-4

EXCEPT US, Canadian models 4-217-252-5

1.5 k

0.15 µF

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

Ω

Earth Ground

AC
voltmeter
(0.75 V)

3

• LOCATION OF CONTROLS

Main Unit (L-ch)
– Front View –

3

2

1

5

6

7

SECTION 2

GENERAL

4

1 INPUT button
2 SURROUND button
3 CENTER MODE button
4 S. WOOFER button
5 MASTER VOL +/– buttons
6 STANDBY, ON, READY indicators
7 U button

– Rear View –

1
2
3

4

5
6

7
8

9

1 TV IN jack
2 VIDEO IN jack
3 AUX IN jack
4 5.1CH INPUT (FRONT, REAR, WOOFER, CENTER) jack
5 CONTROL S, TV IN jac k (US, Canadian models)
6 WIRELESS REAR SPEAKER jack
7 CENTER SPEAKER terminal
8 REAR SPEAKERS terminal
9 R-ch SPEAKER OUTPUT connector

4

SECTION 3

r

DISASSEMBLY

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

AMPLIFIER SECTION

5

2

grille frame (A)
ass’y

3

screw
(BVTT4

4

×

25)

washer
(BF)

washer
(S)

L-ch speaker section

7

flat wire
(CN503)

1

grille frame (B) ass’y

6

screw
(BVTT4

×

25)

9

eleven screws
(4 × 20)

!£

Remove the amplifier
section in arrow
direction.

B

8

connecto
(CN907)

!º

five screws
(BVTP3 × 8)

!¡

Remove the panel (L/B)
in arrow A direction.

A

B

!™

connector

5

SERVICE POSITION

)

1

Remove the amplifier section. (Refer to page 5)

2

two screws
(transistor)

5

heatsink and
AMP board

7

bracket

6

two screws
(BVTP3 × 8)

9

cord bushing

3

two screws
(BVTP3 × 8)

!¡

eleven screws
(BVTP3 × 8)

8

connector
(CN371)

6

!£

two screws
(BVTP3

screw
(BVTP3 × 8)

×

8)

A

4

two connectors
(CN601, 603)

!º

connector

Erect the MAIN boad

!¢

in arrow

A

direction.

!™

back panel (L/A)

!£

two screws
(BVTP3

×

8

!£

four screws
(BVTP3

×

8)

6

bracket

MAIN board

!∞

Insert an insulation sheet
between chassis and
MAIN board.

!•

Connect the fan motor lead wire
to MAIN board connector (CN371).

heatsink

!¶

Insert two connectors
(CN601, 603) into
the connectors
(CN301, 911) on
the MAIN board.

!§

Attach the bracket
to the heatsink
with two screws.

chassis

!ª

Connect the power SW
lead wire to STANDBY
board connector (CN907).

@¡

Connect the MAIN board
and chassis with
two clip wires.

@º

Connect the flat wire to
DISPLAY board connector (CN503).

@™

Push the power SW.

7

SECTION 4

TEST MODE

This set provides four test modes as follows.

1. INPUT CHECK MODE

2. KEY CHECK MODE

3. AMP CHECK MODE

4. DEMONSTRATION MODE
The following describes each test mode in detail.

4-1. INPUT CHECK MODE

Procedure:

1. While pressing the both [S.WOOFER] and [MASTERVOL+] buttons, turn the power ON.

2. Fluorescent indicator tube display “SAVA-500”, after the all lights up, and enter the input check mode.

3. Pressing the [INPUT] button varies the display as follows.

SAVA-500

*********

S.WOOFER *1 S.WOOFER check mode (5.1CH INPUT check mode)

AUX AUX input (SURROUND OFF) check mode

VIDEO VIDEO input (SURROUND OFF) check mode

TV TV input (SURROUND OFF) check mode

AUTO POWER AUTO POWER ON/OFF check mode

*1 Pressing the

maximum, or

Note: In each mode, the volume is muted except for the channels that can be checked.

4. To release the test mode, push back [] button.

[SURROUND] button makes the S.WOOFER lev el minimum, or the [S.WOOFER] b utton makes the S.W OOFER le v el

[CENTERMODE] button returns default.

U

4-2. KEY CHECK MODE

Procedure:

1. Push back [] button to turn the power OFF.

2. Connect the lead wire to TP3 and TP4 on the KEY board.

3. Push [] button to power ON.

4. Let the lead wire short TP3 and TP4.

5. Fluorescent indicator tube display “KEY CHK 500”, and enter the key check mode.

6. Pressing any buttons, the number of button will be displayed on the fluorescent indicator tube.

7. Pressing the f irst b utton turns on the [READY] LED (red), and the second button turns on the [ON] LED (green). Thus, two LEDs light
up alternately each time the buttons are pressed.

INPUT
SURROUND
CENTER MODE
WOOFER
MASTER VOL –
MASTER VOL +

8. After all b uttons are pressed, it will be in the ST ANDBY mode.

Note: If a check failed, the set does not go in ST ANDBY state, and you cannot e xit from the test mode. In this case, quit the test mode by pushing back []

button.

U

U

Button

Button Number

1
2
3
4
5
6

U

8

4-3. AMP CHECK MODE

Procedure:

1. Push back [] button to turn the power OFF.

2. Connect the lead wire to TP1 and TP2 on the KEY board.

3. Push [] button to power ON.

4. Let the lead wire connected TP1 and TP2.

5. Fluorescent indicator tube display “AMP CHK 500”, and enter the amp check mode.

6. The check step advances in order as TP1 and TP2 are shorted.

STEP

0
1
2
3
4
5
6
7
8

9
10
11
12

*

*1 The step 12 is the AUTO POWER ON/OFF check.
*2 The step 12 is automatically turned the power OFF in one second, ON when a signal is entered to TV input, and OFF when a signal

input stops.

*3 After the step 12 finished, return the parameters to default values, then turn the power OFF.

7. To release the test mode, push back [] button.

U

U

AMP CHK 500
AMP CHK 1
AMP CHK 2
AMP CHK 3
AMP CHK 4
AMP CHK 5
AMP CHK 6
AMP CHK 7
AMP CHK 8
AMP CHK 9
AMP CHK 10
AMP CHK 11
AMP CHK 12

INPUT

VIDEO
VIDEO
VIDEO
VIDEO
VIDEO
VIDEO

AUX
AUX

5.1

5.1

5.1

5.1
TV

U

VOL

MIN
MAX
MAX
MAX
MAX
MAX

MIN
MAX
MAX

MIN
MAX
MAX
MAX

SW MODE

1
OFF
OFF
OFF

1

2

1

1

1

1

1

1

1

SUR MODE

PRO LOGIC

OFF

PRO LOGIC

GAME

OFF

OFF
PRO LOGIC
PRO LOGIC

–
–
–
–

PRO LOGIC

BASS

0
0
0
0
0
0
0
0
0

0
–5
+5

0

TREBLE

0
0
0
0
0
0
0
0
0

0
–5
+5

0

• Checking Location
– KEY Board (Conductor Side) –

S505 S506 S502

S504 S503 S501

TP3 TP2

TP4TP1

9

4-4. DEMONSTRATION MODE

1. Entering the demonstration mode

• Press the [INPUT] and [MASTERVOL+] buttons simultaneously
to start demonstration mode.

• When the set goes in demonstration mode, the [ON] LED (green)
blinks, and the [STANDBY] and [READY] LEDs (red) light up.

• The sequence during the demonstration mode is following as
bellow.

Note:

1. In the demonstration mode, only the [INPUT], [MASTERVOL],
and [S.WOOFER] buttons are active.

2. The operation with remote commander is disabled.

Demonstration mode sequence:

@@@@@@@@@

@ H E L L O @

WELCOME TO SAVA *1

SOUND SYSTEM

I AM SA VA-500 *1

MY FEATURES ARE 4

INPUTS AND 5 *1

SURROUND MODE

LISTEN TO *1

MY SOUND

5.1 INPUT

5.1 CH IN OTHER INPUT

PRO LOGIC *2

C.STUDIO *2

HALL *2

STUDIUM *2

GAME *2

THANK YOU *2

*1 First seven characters are dis-

played, then eighth and subse­quent characters are displayed.
(Characters run on the display)

*2 Displayed for 5 seconds.

Note: 1 The demonstration mode operates with the input, and volume

position selected last.

2 The input and volume are variable even during demonstration

mode.

2. Releasing the demonstration mode

• To release the demonstration mode, push back [] button.

U

10

SECTION 5

DIAGRAMS

5-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• p : parts mounted on the conductor side.

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

• Indication of transistor.

Q

B

CE

These are omitted.

Q

B

CE

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

¢

•

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

Note:

The components identi­fied by mark ! or dotted
line with mark ! are criti­cal for safety.
Replace only with part
number specified.

• U : B+ Line.

• V : B– Line.

• Voltages and waveforms are dc with respect to ground

• V oltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

• Abbreviation

: internal component.

under no-signal conditions.
no mark : AUDIO

Voltage var iations may be noted due to normal produc­tion tolerances.

Voltage var iations may be noted due to normal produc­tion tolerances.

F : AUDIO
CND : Canadian model

4

W or less unless otherwise

Note:

Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.

• Circuit Boards Location

REG board

DISPLAY board

KEY board

STANDBY board

LED board

FILTER board

MAIN board

AC-SW board

POW-CN board

POW-LR
board

POW-SW board

AMP board

POW-SR
board

CONNECTOR board

– L-ch speaker section –

1111

SAV A-500/SS-CN16/SR16

5-2. PRINTED WIRING BOARD – MAIN Board – • See page 11 for Circuit Boards Location.

• Semiconductor
Location

Ref. No. Location

D101 D-13
D102 D-13
D353 C-8
D401 E-12
D701 C-2
D703 G-5
D704 G-5
D705 G-5
D706 G-5
D707 H-6
D708 H-6
D751 E-6
D801 H-8
D802 H-8
D803 H-8
D804 G-8
D805 G-8
D901 B-1
D902 C-4
D903 E-4
D904 E-4
D905 E-4
D906 E-4
D907 D-4
D908 D-4
D909 D-5
D910 D-5
D911 D-7

(Page 16)

(Page 16)

(Page 16)

(Page 20)

(Page 18)

(Page 16)

IC101 H-12
IC102 F-13
IC103 H-13
IC201 B-12
IC202 B-9
IC203 D-11
IC400 E-11
IC401 G-11
IC701 C-2
IC901 G-7
IC902 F-7
IC903 E-7
IC904 D-7

Q301 A-13
Q302 B-13
Q351 B-8
Q352 B-8
Q353 C-8
Q354 C-8
Q371 B-7
Q372 C-7
Q747 F-7
Q748 G-7
Q801 H-8
Q802 G-8
Q902 D-5

(Page 16)

(Page 18)

(Page 16)

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