Philips SW7000SA Service Manual

Service

Active Subwoofer

Service Service

Service

SW7000SA/00S/01S

Service Manual

Location of PC Boards/Specifications........................1-2

Measurement Setup ...................................................1-3

ESD & Safety Instruction............................................1-4

Disassembly Instructions & Service Positions .............. 2

Set Block & Wiring Diagram ..........................................3

Amplifier/Input/LED Board............................................. 4

Power Board .................................................................. 5

Mechanical Exploded View ........................................... 6

Page

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-ET0242 Service Audio Printed in The Netherlands Subject to modification

Version 1.0

3139 785 30098

LOCATION OF PC BOARDS

LED BOARD

1-2

AMPLIFIER BOARD

INPUT BOARD

POWER BOARD

SPECIFICATIONS

SUBWOOFER

Subwoofer (not magnetically shielded design).......................................................................................................6.5"

Output Power.........................................................................................................................................50W (4Ω,DIN)

THD (Total Harmonic Distortion) ...................................................................................10% at 80 Hz (output power)

Reproduction Frequency Response.......................................................................................................30 Hz-160 Hz

Phase Switch....................................................................................................................................................00,180

Input Sensitivity (Subwoofer In).................................................................................................................80 mVrms

AC Power.........................................................................................................................................230V/50 Hz(/00S)

AC Power........................................................................................................................115V/230V,50Hz/60Hz(/01S)

power Consumption...........................................................................................................53 W (at 1/8 Rated Power)

Dimensions (w x h x d)...................................................................................................130 mm x 337 mm x 375 mm

Weight...................................................................................................................................................................7 Kg

MEASUREMENT SETUP

1-3

Audio

Generator

JK301

DUT

OUT

CN501

LOAD 4 OHM

LEVEL

DISTORTION

METER

SCOPE

Audio Test Signal

UM5ms 2v

100Hz

1-4

ESD & SAFETY INSTRUCTION

WARNING

All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential.

ATTENTION

Tous les IC et beaucoup d’autres semi-conducteurs sont sensibles aux décharges statiques (ESD). Leur longévité pourrait être considérablement écourtée par le fait qu’aucune précaution n’est prise à leur manipulation. Lors de réparations, s’assurer de bien être relié au même potentiel que la masse de l’appareil et enfiler le bracelet serti d’une résistance de sécurité. Veiller à ce que les composants ainsi que les outils que l’on utilise soient également à ce potentiel.

ESD

Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified,be used.

Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen, identiek aan de gespecificeerde, worden toegepast.

Les normes de sécurité exigent que l’appareil soit remis à l’état d’origine et que soient utiliséés les piéces de rechange identiques à celles spécifiées.

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten. Der Original zustand des Geräts darf nicht verändert werden; für Reparaturen sind Original-Ersatzteile zu verwenden.

WARNUNG

Alle ICs und viele andere Halbleiter sind empfindlich gegenüber elektrostatischen Entladungen (ESD). Unsorgfältige Behandlung im Reparaturfall kan die Lebensdauer drastisch reduzieren. Veranlassen Sie, dass Sie im Reparaturfall über ein Pulsarmband mit Widerstand verbunden sind mit dem gleichen Potential wie die Masse des Gerätes. Bauteile und Hilfsmittel auch auf dieses gleiche Potential halten.

WAARSCHUWING

Alle IC’s en vele andere halfgeleiders zijn gevoelig voor electrostatische ontladingen (ESD). Onzorgvuldig behandelen tijdens reparatie kan de levensduur drastisch doen verminderen. Zorg ervoor dat u tijdens reparatie via een polsband met weerstand verbonden bent met hetzelfde potentiaal als de massa van het apparaat. Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.

AVVERTIMENTO

Le norme di sicurezza esigono che l’apparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambio identici a quelli specificati.

"After servicing and before returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA."

“Pour votre sécurité, ces documents doivent être utilisés par des spécia- listes agréés, seuls habilités à réparer votre appareil en panne”.

Tutti IC e parecchi semi-conduttori sono sensibili alle scariche statiche (ESD). La loro longevità potrebbe essere fortemente ridatta in caso di non osservazione della più grande cauzione alla loro manipolazione. Durante le riparazioni occorre quindi essere collegato allo stesso potenziale che quello della massa dell’apparecchio tramite un braccialetto a resistenza. Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale.

DISASSEMBLY INSTRUCTIONS

Dismantling the Grille Assembly & Speaker Driver

1. Place the Subwoofer Box as shown in the Picture 1 and use a screw driver to force open the Grille Assembly.

Caution: Take care the surface when take out the Grille Assembly of Subwoofer

2-1

2. Place the Subwoofer Box as shown in the Picture 2 and loosen 4 screws A to remove the Speaker Driver.

Picture 1

Dismantling the Front Assembly

1. Place the Subwoofer Box as shown in the Picture 3 (Bottom view) and use a screw driver to force open the front assembly.

Caution: Do not break the bundle of wires to the front.

Take care the surface when take out the front

panel of subwoofer

Picture 2

Dismantling the Rear assembly

1. Loosen 9 screws B as shown in the Picture 4 (Rear View) to pull out the Printed Circuit Board assembly.

Caution: Do not break the bundle of wires to the front.

Picture 3

WARNING: THERE IS ONLY A LED BETWEEN FRONT PANEL AND WOOD BOX. IF NOT NECCESSARY, PLEASE DO NOT TRY TO OPEN THE FRONT P ANEL!!!

Picture 4

SERVICE POSITION

2-2

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