SA SA WMS145 Service Manual

SA-WMS145/WMSP50
SERVICE MANUAL
Ver 1.0 2003. 05
•SA-WMS145 are the subwoofer section in SA-VE145.
•SA-WMSP50 are the subwoofer section in SA-VE2M, HT-SL50/SL55.
Speaker system Active subwoofer, magnetically shielded Speaker unit Woofer: 20 cm, cone type Enclosure type Advanced SAW type Amplifire section Continuous RMS power output
Reproduction frequency range
High frequency cut-off frequency
Inputs
INPUT (input pin jack)
General
Power requirements 230 V AC, 50/60 Hz Power consumptions 100 W Dimensions (w/h/d) Approx. 270 × 325 × 398 mm, including
Mass Approx. 10 kg
Design and specifications are subject to change without notice.
photo: SA-WMS145
SPECIFICATIONS
100 W (6 ohms, 20 - 250 Hz, 0.8% THD)
28 Hz - 200 Hz
150 Hz
front grille
AEP Model
SA-WMS145/WMSP50
E Model
SA-WMSP50
9-877-360-01
2003E04-1 © 2003. 05
ACTIVE SUBWOOFER
Sony Corporation
Home Audio Company Published by Sony Engineering Corporation
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SA-WMS145/WMSP50

TABLE OF CONTENTS

1. DIAGRAMS
1-1. Circuit Boards Location ...................................................... 3
1-2. Printed Wiring Boards ......................................................... 5
1-3. Schematic Diagram ............................................................. 6
2. EXPLODED VIEWS
2-1. Front Section ....................................................................... 7
2-2. Rear Section ........................................................................ 8
3. ELECTRICAL PARTS LIST........................................... 9
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 P ARTS WHOSE PART NUMBERS APPEAR AS SHO WN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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1-1. CIRCUIT BOARDS LOCATION
d
LED board
SWITCH board
SA-WMS145/WMSP50
SECTION 1

DIAGRAMS

INPUT board
MAIN board
POWER TRANS boar
CONTROL board
3
SA-WMS145/WMSP50
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 and 1/ specified.
2 : nonflammable resistor.
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.
A : B+ Line.
B : B– Line.
•Voltage is dc with respect to ground under no-signal (detuned) condition.
•Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc­tion tolerances.
• Signal path. F : AUDIO
Note on Printed Wiring Boards:
X : parts extracted from the component side.
: Pattern from the side which enables seeing.
4
W or less unless otherwise
• Semiconductor Location
Ref. No. Location D205 E-10
D206 E-11 D301 G-7 D302 G-8 D304 E-9 D401 D-6 D402 D-7 D403 D-7 D501 D-8 D502 G-7 D602 D-10 D901 A-10
IC202 E-11 IC203 E-12 IC301 G-9
Q501 D-9 Q502 D-9 Q503 D-10 Q504 D-10 Q505 G-7
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