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
UK 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
1
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.
2
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 Ω 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 MΩ).
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
4
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