Sony ta sv 7 av service manual

Page 1

TA-

SWAV

SERVICE MANUAL

Ver 1.0 2001.06

TA-SV7AV is the Amplifier section
in MHC-SV7AV.

E Model

SPECIFICATIONS
Amplifier section Outputs
MD OUT:

. . 7 (phono jacks)
Egggogzwmg measured at AC 120, 220, 230 240 V, VIDEO OUT:
Front Speaker: (Phmo Wk)
DIN power output (rated) 95 + 95 watts

(6 ohms at 1 kHz, DIN) SiVIDEO OUT:

Continuous RMS power output (reference)
120 + 120 watts
(6 ohms at 1 kHz, 10%

(47pin/mini»DlN jack)

THD) .
Center Speaker: ZiiNOIfi-m jack)
DIN power output (rated) 30 watts _
(8 ohms at 1 kHz, DIN) FRONT SPEAKER-
Continuous RMS power ouz%utvglell;erence) REAR SPEAKER:
5:32; a 1 kHZ 10% CENTER SPEAKER:
Rear Speaker:
DIN power output (rated) 30 + 30 watts SUB WOOFER OUT:
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
General

40 + 40 watts
(8 ohms at 1 kHz, 10%

Power requirements

Tl-ID) Thailand model:
Other models:
Inputs
VIDEO (AUDIO) IN: voltage 250 mV.
(phono jacks) impedance 47 kilohms
MD IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
OPTICAL IN: Power consumption
(Square optical connector jacks, rear panel)
wavelength 700 nm Dimensions (w/h/d)
MIC 1/2: sensitivity 1 mV,
(phone jack) impedance 10 kiloth Mass

voltage 250 mV
impedance 1 kilohms
max. output level

1 VpAp. unbalanced,Sync
negative, load impedance
75 ohms

Y: 1 VpAp. unbalanced,
Sync negative.

c: 0.286VpAp

load impedance 75 ohms
accepts headphones of

8 ohms or more

accepts impedance of 6 to
16 ohms

accepts impedance of 8 to
16 ohms

accepts impedance ol'8 to
16 ohms

Voltage 1 V,

impedance 1 kilohms

220 V AC, 50/60 Hz
120 V, 220 V or

230 7 240 V AC,

50/60 Hz

Adjustable with voltage
selector

300 watts
Approx. 280 x128 x 350 mm

Approx. 7.7 kg

Design and specifications are subject to change

without notice.

9-873-154-01 Sony Corporation
2001F0500-1 Home Audio Company
© 2001.6 Shinagawa Tec Service Manual Production Group

AMPLIFIER

SONY.

Page 2

TA-SV7AV

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY
3- 1. Disassembly Flow ........................................................... 5
3721 Cover ................... 6
373. Front Panel Section . 6
3-4. Back Panel (ZCH/VCD) Section . 7
3-5 FRONT AMP Board ....................................................... 7
4. TEST MODE .............................................................. 8
5. DIAGRAMS
5-] Note for Primed Wiring Boards

and Schematic Diagrams ................................................ 10
572. Printed Wiring Boards 7 FRONT AMP Section 7 . . 11
573. Schematic Diagram 7 FRONT AMP Section (1/2) 12
5-4. Schematic Diagram 7 FRONT AMP Section (2/2) 7 13
5751 IC Pin Function Description ........................................... 14
56. Printed Wiring Board

7 SURROUND AMP Section 7 14
5-7. Schematic Diagram

7 SURROUND AMP Section 7 ...................................... 15
5A8. Printed Wiring Boards 7 CONTROL Section 7 16
579. Schematic Diagram 7 CONTROL Section 7 17
5-10. Printed Wiring Boards 7 POWER Section 7 18
51 1. Schematic Diagram 7 POWER Section 7 ..................... 19
6. EXPLODED VIEWS
6-1. Cover Section ....... 20
6-2. Front Panel Section . 20
673. Chassis Section 21
7. ELECTRICAL PARTS LIST ............................... 22

SAFETY-RELATED COMPONENT WARNING I!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.