Philips SW988/00S User manual

Service
Service
Service
Service
Service
Technical Specifications
Mains Voltage : 230V
Mains Frequency : 50Hz
Output Power (55Hz, 10% THD) : 100W at 4 ohm load
Input Sensitivity (55Hz, 100W) : < 220mV
S/N Ratio (100Hz, 200mV) : > 60dB*
Minimum Volume Hum & Noise : < 3mV
Frequency Response (-3dB) Low : <40Hz
High : 110Hz - 140Hz
Distortion (100Hz, 200mV) : < 1%*
* at Output level of 2V across 4 ohm load
©Copyright 2002 Philips Consumer Electronics B.V. Eindhoven, The Netherlands
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.
Published by BB 0205 Service Audio Printed in The Netherlands Subject to modification
GB
3139 785 30048
Powered Subwoofer
Service Manual
SW988/00S
(3139 118 79380)
Version 1.0

2
1. Place the Subwoofer Box as shown in the Picture 4 and
Picture 5 and use a screw driver (minus type) to force
open the front assembly.
Caution: Do not break the bundle of wires to the front.
2. Unscrew 4 screws D (see Picture 6) to remove the Woox
Speaker (pos. 4).
1. Place the Subwoofer Box upside down and remove the
4 Rubber Foot A(see Picture 1). Then unscrew 4 screws
B (see Picture 2) to loosen the Grille Base (pos. 19).
Picture 5
Picture 4
DISMANTLING INSTRUCTIONS
Dismantling the Grille Base & Speaker Driver
2. Unscrew 4 screws C (see Picture 3) to remove the
Speaker Driver (pos. 17).
Picture 3Picture 2Picture 1
Dismantling the Front Assembly
Picture 6

3
Service Position
1. Unscrew 10 screws E (see Picture 7) to pull out the pc
board assembly.
Caution: Do not break the bundle of wires to the front.
Picture 7
DISMANTLING INSTRUCTIONS
Dismantling the Rear Assembly

SW301
JK301
TP403
TP402
LVA0031C021
LVA0031C011
TP401
WIRING DIAGRAM
4

COMPONENT LAYOUT
5

ELECTRICAL PARTS LIST
MISCELLANEOUS
6
F901 4822 070 35002
!
Fuse T5A 250V
F902 4822 070 35002
!
Fuse T5A 250V
JK301 4822 267 41238 RCA Jack 1P
L501 4822 157 71807 RF Coil 1µH
RL501 9965 000 09714 Relay SHINMEI
RPA-12 V DC 10A(AC)250V
SW301 4822 277 11821 Slide Switch
VR401 9965 000 08282 Control Rotary 50kB
CAPACITORS
C301 4822 122 33293 100pF 5% 50V
C302 4822 124 21913 1µF 20% 63V
C304 4822 124 21913 1µF 20% 63V
C305 4822 124 21913 1µF 20% 63V
C306 9965 000 08287 0,22µF 5% 100V
C307 9965 000 08287 0,22µF 5% 100V
C401 4822 122 33293 100pF 5% 50V
C402 4822 121 41935 12nF 5% 250V
C403 5322 121 42662 68nF 5% 250V
C404 5322 121 42662 68nF 5% 250V
C405 5322 121 42489 33nF 5% 250V
C406 4822 121 42077 6,8nF 10% 400V
C407 4822 124 21913 1µF 20% 63V
C410 4822 124 23056 47µF 20% 16V
C411 4822 124 23056 47µF 20% 16V
C412 4822 122 30103 22nF 80% 63V
C413 4822 122 30103 22nF 80% 63V
C414 9965 000 03366 0,22µF +80/-20% 50V
C415 9965 000 03366 0,22µF +80/-20% 50V
C501 4822 124 22652 2,2µF 20% 50V
C502 4822 124 40207 100µF 20% 25V
C503 2038 554 00065 100nF +80/-20% 50V
C504 9965 000 09732 47µF 20% 35V
C505 9965 000 09731 270pF 10% 50V
C506 2038 554 00065 100nF +80/-20% 50V
C507 2038 554 00065 100nF +80/-20% 50V
C508 5322 122 32072 33pF 2% 100V
C509 2038 554 00065 100nF +80/-20% 50V
C510 4822 124 40248 10µF 20% 63V
C511 5322 124 41945 22µF 20% 35V
C512 4822 124 40207 100µF 20% 25V
C513 4822 124 40207 100µF 20% 25V
C514 4822 124 40248 10µF 20% 63V
C515 5322 124 41945 22µF 20% 35V
C516 5322 121 42578 100nF 5% 250V
C517 9965 000 08287 0,22µF 5% 100V
C518 9965 000 09733 47µF 20% 50V
C522 4822 124 40248 10µF 20% 63V
C523 5322 122 32331 1nF 10% 100V
C524 5322 122 32331 1nF 10% 100V
C905 9965 000 09715 4700µF 20% 63V
C906 9965 000 09715 4700µF 20% 63V
C907 2038 554 00065 100nF +80/-20% 50V
C908 2038 554 00065 100nF +80/-20% 50V
C911 2038 554 00065 100nF +80/-20% 50V
C912 2038 554 00065 100nF +80/-20% 50V
C914 2038 554 00065 100nF +80/-20% 50V
C915 2038 554 00065 100nF +80/-20% 50V
C918 9965 000 11041 0,01µF 20% 500V
RESISTORS
R301 4822 050 21003 10k 1% 0,6W
R302 4822 050 25602 5k6 1% 0,6W
R303 4822 050 21003 10k 1% 0,6W
R304 9965 000 09725 4,7k 5% 1/6W
R366 4822 050 21003 10k 1% 0,6W
R367 4822 050 21001 100R 1% 0,6W
R368 4822 050 21003 10k 1% 0,6W
R369 4822 050 21502 1k5 1% 0,6W
R370 4822 050 21502 1k5 1% 0,6W
R371 4822 050 22203 22k 1% 0,6W
R372 4822 050 25602 5k6 1% 0,6W
R373 4822 050 22702 2k7 1% 0,6W
R401 9965 000 08284 220k 5% 1/6W
R402 4822 050 25602 5k6 1% 0,6W
R403 9965 000 08285 18k 5% 1/6W
R404 4822 050 21504 150k 1% 0,6W
R405 9965 000 09724 3,9k 5% 1/6W
R406 9965 000 08285 18k 5% 1/6W
R407 4822 050 21503 15k 1% 0,6W
R410 4822 050 21001 100R 1% 0,6W
R411 4822 050 21001 100R 1% 0,6W
R501 9965 000 09727 56k 5% 1/6W
R502 4822 050 22702 2k7 1% 0,6W
R503 4822 050 22702 2k7 1% 0,6W
R504 9965 000 09726 51R 5% 1/6W
R505 4822 050 21503 15k 1% 0,6W
R506 4822 050 21503 15k 1% 0,6W
R507 9965 000 09726 51R 5% 1/6W
R508 9965 000 09726 51R 5% 1/6W
R509 9965 000 09723 3,6k 5% 1/6W
R510 9965 000 09728 750R 5% 1/6W
R511 9965 000 09729 820R 5% 1/6W
R512 9965 000 09720 300R 5% 1/2W
R513 9965 000 09716 0,22R 5% 5W
R514 4822 050 21003 10k 1% 0,6W
R515 4822 050 23303 33k 1% 0,6W
R517 9965 000 09716 0,22R 5% 5W
R518 4822 050 26803 68k 1% 0,6W
R519 4822 050 21502 1k5 1% 0,6W
R520 4822 116 81753 4R7 5% 0,5W
R521 9965 000 09721 3,9k 5% 1/2W
R522 4822 116 81753 4R7 5% 0,5W
R525 9965 000 09718 1k 5% 2W
R527 4822 050 26803 68k 1% 0,6W
R528 4822 050 21004 100k 1% 0,6W

# : Provision.
Note : All capacitors are in uF unless otherwise specified.
All resistors are 1/6W 5% unless otherwise specified.
Some values may varies, see respective parts list for correct value.
#
#
#
#
7
CIRCUIT DIAGRAM
7
ELECTRICAL PARTS LIST
RESISTORS
R529 4822 050 24703 47k 1% 0,6W
R530 4822 050 23302 3k3 1% 0,6W
R531 4822 050 23302 3k3 1% 0,6W
R532 4822 050 21004 100k 1% 0,6W
R533 4822 050 24703 47k 1% 0,6W
R534 4822 050 24703 47k 1% 0,6W
R535 4822 050 21003 10k 1% 0,6W
R536 9965 000 09722 27k 5% 1/6W
R537 4822 050 22203 22k 1% 0,6W
R538 4822 050 26803 68k 1% 0,6W
R539 4822 050 23302 3k3 1% 0,6W
R540 9965 000 09730 8,2k 5% 1/6W
R541 9965 000 09722 27k 5% 1/6W
R542 9965 000 08284 220k 5% 1/6W
R901 9965 000 09719 620R 5% 2W
R902 9965 000 09717 1,8k 5% 1W
DIODES
DB901 4822 130 70035
!
Rectifier RS402L
D401 4822 130 30621 1N4148
D501 4822 130 31438 1N4001G
D502 4822 130 30621 1N4148
D503 4822 130 30621 1N4148
D504 4822 130 30621 1N4148
D505 4822 130 31438 1N4001G
D506 4822 130 30621 1N4148
LD401 4822 130 10236 LED Green/Red
ZD501 4822 130 34197 BZX79-B12
ZD502 4822 130 31024 BZX79-B18
TRANSISTORS & INTEGRATED CIRCUITS
IC401 4822 209 32742 TL074CN
IC901 4822 209 90748 AN7915T
IC902 4822 209 90747 7815
Q352 4822 130 41198 2SC945P
Q501 4822 130 41198 2SC945P
Q502 4822 130 41198 2SC945P
Q503 4822 130 41198 2SC945P
Q504 4822 130 41198 2SC945P
Q505 4822 130 41198 2SC945P
Q506 4822 130 63876 2SA733R
Q507 4822 130 63876 2SA733R
Q508 4822 130 63876 2SA733R
Q509 4822 130 41198 2SC945P
Q510 4822 130 41198 2SC945P
Q511 4822 130 63221 2SA965Y
Q512 4822 130 10235 2SC2235-Y
Q513 4822 130 10942 2SA1941-O
Q514 4822 130 10943 2SC5198-O
Q515 4822 130 63876 2SA733R
Q516 4822 130 41198 2SC945P
Q517 4822 130 41198 2SC945P
Q518 4822 130 63876 2SA733R
Note : Only the parts mentioned in this list are normal
service spare parts.
ELECTRICAL PARTS LIST

9
21
20
10
19
18
17
16
15
13
14
1
2
3
5
4
6
57
12
11
8
46
47
44
45
32
33
34
36
37
10
33
35
22
23
25
24 26
43
40
41
29
27
28
30
31
38
42
39
48
8
EXPLODED VIEW
8
MECHANICAL PARTS LIST
1 9965 000 12141 Volume Knob
2 9965 000 12142 Bar Trim (Lens)
3 9965 000 12149 Front Cabinet
4 9965 000 12144 Woox Speaker
9 9965 000 09700 Foot
11 9965 000 09701 Foot D30X35mm
14 9965 000 09702 Rubber Pad
15 4822 532 13065 Speaker Sponge
16 9965 000 08277 Port Tube
17 9965 000 08278 Speaker Driver 100W 6,5" 4 ohm
18 9965 000 08279 Port Tube
19 9965 000 12145 Grille Base
21 9965 000 09704 Rubber Foot
35 9965 000 09705
!
Mains Cord
37 9965 000 07092 Bushing
39 9965 000 09707
!
SW Rocker 5A AC 250V TV-5
47 9965 000 09713
!
PowerTransformer230V/50Hz100W
9965 000 09734 RCA Cable L=3000mm
Note: Only the parts mentioned in this list are normal
service spare parts.
SCREW LIST
6 M3 x 6
7 M3 x 8
10 M3.5 x 14
12 M4 x 28
13 M4 x 25
20 M3.5 x 28
27 M3 x 8
28 M3 x 12
33 M3 x 10
34 M2 x 6
36 M3 x 12
41 M3 x 6