Sony SA-VA700 User manual

MICROFILM
SERVICE MANUAL
HOME THEATER ACTIVE SPEAKER SYSTEM
US Model
AEP Model
UK Model
E Model
SAVA-700/SS-T100
Front Speaker Main Unit
Center/Rear Speaker SS-T100
SPECIFICATIONS
Photo: Main UnitPhoto: SS-T100 (L-ch) (R-ch)
The SAVA-700 composed of the following table.
– Continued on next page –

2
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 PUB-
LISHED BY SONY.
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/THERMO/REG/
T2/T1/STANDBY/AC-SW Board –............................... 16
5-7. Schematic Diagram – FILTER/THERMO/REG/
T2/T1/STANDBY/AC-SW Board –............................... 17
5-8. Printed Wiring Board – AMP Board – .......................... 18
5-9. Schematic Diagram – AMP Board – ............................. 19
5-10. Printed Wiring Boards
– DISPLAY/LED/KEY Board – ..................................... 20
5-11. Schematic Diagram
– DISPLAY/LED/KEY Board – ..................................... 21
5-12. IC Pin Function Description ........................................... 24
6. EXPLODED VIEWS ................................................ 26
7. ELECTRICAL PARTS LIST ............................... 30

3
SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
– Rear view –
MODEL PART No.
US model 4-217-252-0
EXCEPT US models 4-217-252-2
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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
TheAC 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.
2. A battery-operatedAC 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” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2VAC range are suit-
able. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ FAC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
PART No.

4
SECTION 2
GENERAL
• LOCATION OF CONTROLS
Main Unit (L-ch)
– FrontView –
1
4
32
5
6
7
1INPUT button
2SURROUND button
3CENTER MODE button
4S. WOOFER button
5MASTER VOL +/– buttons
6STANDBY, ON, READY indicators
7Ubutton
1TV IN jack
2VIDEO IN jack
3AUX IN jack
45.1CH INPUT (FRONT, REAR, WOOFER, CENTER) jack
5CONTROL S, TV IN jack (US model)
6WIRELESS REAR SPEAKER jack
7CENTER SPEAKER terminal
8REAR SPEAKERS terminal
9R-ch SPEAKER OUTPUT connector
– Rear View –
1
2
3
4
5
6
7
8
9

5
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
AMPLIFIER SECTION
2 grille frame (A)
ass’y
3 screw
(BVTT4
× 25)
6 screw
(BVTT4
× 25)
4washer
(BF)
5washer
(S) L-ch speaker section
7 flat wire
(CN503)
8 connecto
r
(CN907)
1 grille frame (B) ass’y
!º five screws
(BVTP3
× 8)
!™ connector
!£ Remove the amplifier
section in arrow
B
direction.
!¡ Remove the panel (L/B)
in arrow
A direction.
9 eleven screws
(4
× 20)
B
A

6
SERVICE POSITION
2 two screws
(transistor)
!¡ eleven screw
s
(BVTP3 × 8)
5 heatsink and
AMP board
7 bracket
6 two screws
(BVTP3 × 8)
8 connector
6 screw
(BVTP3 × 8)
4 two connectors
(CN601, 603)
!º connector
!™ back panel (L/A)
3 two screws
(BVTP3 × 8)
9 cord bushing
1 Remove the amplifier section. (Refer to page 5)
!£ two screws
(BVTP3 × 8)
!¢ two screws
(BVTP3
× 8)
A!∞
Erect the Main board
in arrow
A direction.
!¢ two screws
(BVTP3
× 8
)
!¢ four screws
(BVTP3
× 8)

7
bracket
MAIN board
!§ Insert an insulation sheet
between chassis and
MAIN board.
!ª Connect the fan motor lead wire
to MAIN board connector (CN301).
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
@º Connect the power SW
lead wire to STANDBY
board connector (CN907).
@¡ Connect the flat wire to
DISPLAY board connector (CN503).
@£ Push the power SW.
@™ Connect the MAIN board
and chassis with
two clip wires.

8
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-700”, after the all lights up, and enter the input check mode.
3. Pressing the [INPUT] button varies the display as follows.
SAVA-700
*********
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 [SURROUND] button makes the S.WOOFER level minimum, or the [S.WOOFER] button makes the S.WOOFER level
maximum, or [CENTERMODE] button returns default.
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.
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 700” , 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 first button 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.
8. After all buttons are pressed, it will be in the STANDBY mode.
Note: If a check failed, the set does not go in STANDBY mode, and you cannot exit from the test mode. In this case, quit the test mode by pushing back
[] button.
Button
INPUT
SURROUND
CENTER MODE
WOOFER
MASTER VOL –
MASTER VOL +
Button Number
1
2
3
4
5
6
U
U
U
U

9
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 700”, and enter the amp check mode.
6. The check step advances in order as TP1 and TP2 are shorted.
*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.
• Checking Location
– KEY Board (Conductor Side) –
AMP CHK 700
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
STEP
0
1
2
3
4
5
6
7
8
9
10
11
12
INPUT
VIDEO
VIDEO
VIDEO
VIDEO
VIDEO
VIDEO
AUX
AUX
5.1
5.1
5.1
5.1
TV
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
VOL
MIN
MAX
MAX
MAX
MAX
MAX
MIN
MAX
MAX
MIN
MAX
MAX
MAX
*
S505 S506 S502
TP3 TP2
TP4TP1
S504 S503 S501
U
U
U

10
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.
Notes: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 SAVA-700 *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
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.
*1 First seven characters are dis-
played, then eighth and subse-
quent characters are displayed.
(Characters run on the display)
*2 Displayed for 5 seconds.
U

1111
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.
B
These are omitted.
CE
Q
B
These are omitted.
CE
Q
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 Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•2: nonflammable resistor.
•5: fusible resistor.
•C: panel designation.
•U: B+ Line.
•V: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : AUDIO
• Voltages aretakenwith aVOM(Input impedance 10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F: AUDIO
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.
• Circuit Boards Location
AC-SW board
LED board
STANDBY board
KEY board
DISPLAY board
FILTER board
THERMO board
AMP board
MAIN board
REG board
– L-ch speaker section –

1212
SAVA-700/SS-T100
5-2. PRINTED WIRING BOARD – MAIN Board – • See page 11 for Circuit Boards Location.
(Page 16)
(Page 16)
(Page 16)
(Page 16)
(Page 16)
(Page 18)
(Page 20) (Page 18) (Page 18) (Page 16)
(Page 16)

1313
SAVA-700/SS-T100
5-3. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 22 forWaveform. •See page 22 for IC Block Diagrams.
• Semiconductor
Location
Ref. No. Location
D101 D-13
D102 D-13
D312 C-3
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
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
Q701 C-3
Q747 F-7
Q748 G-7
Q801 H-8
Q802 G-8
Q902 D-5
(Page 17)
(Page 15)
(Page 14)
The components identified by mark !or dotted
line with mark !are critical for safety.
Replaceonly withpart numberspecified.

1414
SAVA-700/SS-T100
5-4. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 22 for IC Block Diagrams.
(Page 21)
(Page 17)
(Page 17)
(Page 19)
(Page 15)
(Page 13)

1515
SAVA-700/SS-T100
5-5. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 23 for IC Block Diagrams.
The components identified by mark !or dotted
line with mark !are critical for safety.
Replaceonly withpart numberspecified.
(Page 19)
(Page 13) (Page 14)
(Page 19)
(Page 17)
(Page 17)
(Page 17)

1616
SAVA-700/SS-T100
• Semiconductor
Location
– FILTER Board –
Ref. No. Location
5-6. PRINTED WIRING BOARDS – FILTER/THERMO/REG/T2/T1/STANDBY/AC-SW Board – • See page 11 for Circuit Boards Location.
D351 B-1
D352 B-1
IC301 B-4
IC302 B-3
IC303 B-2
IC304 B-1
Q303 A-4
Q304 B-3
Q305 A-2
Q306 B-2
Q307 B-2
Q308 A-1
(Page 12)
(Page 12)
(Page 12)
(Page 12)
(Page 12) (Page 12)
(Page 12)

1717
SAVA-700/SS-T100
5-7. SCHEMATIC DIAGRAM – FILTER/THERMO/REG/T2/T1/STANDBY/AC-SW Board –
The components identified by mark !or dotted
line with mark !are critical for safety.
Replaceonly withpart numberspecified.
(Page 14)
(Page 15)
(Page 13)
(Page 15)
(Page 15)
(Page 14)

1818
SAVA-700/SS-T100
Ref. No. LocationRef. No. Location
• Semiconductor Location
D601 B-3
D602 B-5
D603 B-5
D771 C-1
IC601 A-7
IC602 A-7
IC603 A-6
IC604 A-2
IC605 A-1
IC606 B-4
Q601 A-4
Q602 A-4
Q603 A-5
Q604 A-3
Q605 A-3
Q606 A-5
Q607 A-4
5-8. PRINTED WIRING BOARD – AMP Board – • See page 11 for Circuit Boards Location.
(Page 12) (Page 12) (Page 12)

1919
SAVA-700/SS-T100
5-9. SCHEMATIC DIAGRAM – AMP Board – • See page 23 for IC Block Diagrams.
The components identified by mark !or dotted
line with mark !are critical for safety.
Replaceonly withpart numberspecified.
(Page 15)
(Page 15)
(Page 14)

2020
SAVA-700/SS-T100
• Semiconductor
Location
–DISPLAY Board –
Ref. No. Location
D501 D-1
D502 D-1
D503 C-1
D507 C-1
IC501 B-2
IC502 C-1
IC503 B-5
Q501 C-1
Q502 C-4
Q503 C-4
Q504 C-1
Q505 C-1
5-10. PRINTED WIRING BOARDS – DISPLAY/LED/KEY Board – • See page 11 for Circuit Boards Location.
(Page 12)