JVC SX-DW303 Schematics

SX-DW303

SCHEMATIC DIAGRAMS

POWERED SUBWOOFER

SX-DW303

CD-ROM No.SML200210

US ------------- Singapore

Area Suffix

Contents

Block diagram
Standard schematic diagram
Printed circuit boards

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

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No.21174SCH

Oct. 2002

SX-DW303

In regard with component parts appearing on the silk-screen pr inted side (par ts side) of
the PWB diagrams, the parts that are printed over with black such as the resistor ( ),
diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

(This regulation does not correspond to J and C version.)

Block diagram

SX-DW303

SPEAKER

CN503

OUT

Y502
R

Q5006

POWER AMP

IC 506

IC 505

Q5007

CN861

CN102

MUTE

Q5706

LED

IC 571

REGULATOR

B+

INDICATOR

RED GREEN

Q5902

Q5903

CN502

Q5904

Q5905

CN504

IC 503

IC 502

IC 501

VR502

Carrier Freq.

IC 504

VR501

Off set

CN951

MAINS

PLUG

CN901

POWER

TRANS

T9501

B+

W9001~4

W9001~4

IC 951

POWER-SUPPLY

CIRCUIT

IN

CN505

VOLUME

CN151

PHASE SW

NORMAL-- REVERSE

ON -- CANCEL

AUTO POWER ON / STANDBY SW

W1001

L.P FILTER /

AMP

IC 102

PHASE / A.H.B

IC 103

IC 103 1/2

IC 101

CN501

CN101

FREQUENCY

VOLUME

IC 101

IN PUT L / H AMP

VARIABLE-- FIX

MUTE

CUT OFF FILTER SW

IC 104

LED CONT.

IC 104

AUTO POWER ON

IN PUT L / H AMP

& H.P FILTER

INPUT

(LOW-LEVEL)

MONO
L /

INPUT

(HIGH-LEVEL)

OUTPUT

(SPEAKER-OUT)

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