Sony SARV-900 Service manual
SA-RV900
SERVICE MANUAL
Ver 1.0 2002.08
SPECIFICATION
System
Type Active Subwoofer (magnetically shielded design)
Speaker unit Woofer: 15 cm dia, cone type
Amplifier section
The following measured at AC 120, 220, 240 V, 50/60 Hz
DIN power output (rated) 90 W at 100 Hz, DIN
Continuous RMS power output (reference) 120 W
at 100 Hz, 10 % THD
Reproduction frequency range
20 Hz – 150 Hz
Phase selector NORMAL, REVERSE
Inputs
Input jacks LINE IN: input pin jack
SPEAKER IN: input terminals
Output jacks SPEAKER OUT: output terminals
E Model
Australian Model
General
Power requirements
Mexican models: 120 V AC, 60 Hz
Australian models: 230-240 V AC, 50 Hz
Other models: 120 V, 220 V or 230-240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
100 W
Dimensions Approx. 210 x 325 x 370 mm (w/h/d)
Mass 8.5 kg
Supplied accessories
Foot pads (4)
Audio connecting cord
(1 phono plug – 1 phono plug) (1)
Speaker cords (2)
Design and specifications are subject to change without notice.
9-873-962-01
2002H0200-1
© 2002. 08
ACTIVE SUBWOOFER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
1
SA-RV900
TABLE OF CONTENTS
1. GENERAL .......................................................................... 3
2. DIAGRAMS ........................................................................ 3
2-1. IC Block Diagram ................................................................. 3
2-2. Printed Wiring Board ............................................................ 4
2-3. Schematic Diagram ............................................................... 5
3. EXPLODED VIEW ........................................................... 6
4. ELECTRICAL PARTS LIST ......................................... 6
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.
2
• Location of controls
SECTION 1
GENERAL
SA-RV900
SECTION 2
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
– Front view –
– Rear view –
VOL
NORMAL
PHASE
REVERSE
LINE IN
LR
SPEAKER
IN
LR
SPEAKER
OUT
ON/OFF
POWER ON/OFF
indicator
SUBWOOFER
ON/OFF
VOL
PHASE
LINE IN
SPEAKER IN
SPEAKER OUT
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
2-1. IC BLOCK DIAGRAMS
IC201 NJM2072D (MAIN BOARD)
INPUT
1
For schematic diagrams.
Note:
• 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.
• C : panel designation.
Note:
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
•: B+ Line.
•: B– Line.
•Voltages are dc with respect to ground under no-signal conditions.
no mark : Power on
•Voltages are taken with a VOM (Input impedance 10MΩ).
Voltage variations may be noted due to normal preduction
tolerances.
• Signal path.
K : AUDIO
• Abbreviation
E2 : Central and South America model
E3 : Middle and Near East model
E51 : Chilean and Peruvian model
SP : Singapore model
MX : Mexican model
AUS : Australia model
VCC
8
4
W or less unless otherwise
VOLTAGE SELECTOR
120V
220V
230 - 240V
VOLTAGE SELECTOR
(E2,E3,E51,SP model only)
33
GAIN CONT
AMP OUT
GND
2
3
4
OUTPUT2
7
OUTPUT1
6
RECOVERY
5
TIME CAP
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