Genius SP-S110 Manuale utente

Service Guide SP-S110

SERVICE GUIDE

KEY SYSTEM CORP

Version 1.0 Page 1 of 19

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Service Guide SP-S110

Revision History

Version Date Change

1.0 1/08/2007

Version 1.0 Page 2 of 19

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Service Guide SP-S110

Revision History………………………………………………………………….2

Table of contents……………………………………………………………...…3

Getting Start…………………………………………………….………………...4

Conventions Used in this Guide…………………………………………….…4

Safety Precautions………………………………………………………………4

Chapter 1. How to Handle Defective Returns……………………………….5

1.2 Problem………………………………………………………………………6

1.2.1 No power，LED （indicator）unlighted……………………………….7

1.2.2 No sound…………………………………………………………….…….8

1.2.3 Noise………………….….……….……….……….……….……….….…9

1.2.4 LED indicators no light when working….…..….……….……….….…10

1.2.5 Volume switch no use…………………………………………….…..…11

1.2.6 Headphone jack no use……………….…………….……………….….12

Chapter 2. Specification…………………………………………………..……13

Chapter 3. Block diagram…………………………………………..………….14

Chapter 4. Exploded view………………………………………………………15

Active speaker………………………………………………………….……….15

Passive speaker………………………………………..…….…………………16

Chapter 5. Part list…………………………………… …………….…………...17

Active speaker…………………………………………………….…….…….. 17

Passive speaker……………………………………………………………...…17

Chapter 6 Important notes………………………………………………………18

Chapter 7 Schematic diagram………………………………………………….29

Version 1.0 Page 3 of 19

Table

of Contents

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Service Guide SP-S110

Getting Started

Conventions Used in the Guide

Pay SpecialAttention: Instructions that are important to remember and may prevent

mistakes.

Caution:Informationthat,ifnot followed, may result in damage to the product.

Safety Precautions

The following precautions should be observed in handing the speaker described in

this guide:

Place the speakers on a flat, level and stable surface.

Do not place the speakers in environments subject to mist, smoke, vibration,

excessive dust, salty or greasy air, or other corrosive gases and fumes.

Do not drop or jolt the speakers.

Donotallowanythingtodrop into the subwoofer case through its ventilator, as it

could result in fatal electric shock or fire.

Place the unit far enough from other equipments for good heat dissipation.

Do not perform any maintenance with wet hand.

Preventforeignsubstance,such as water, other liquids or chemical, from entering

the speakers while performing maintenance procedures on the speakers.

Version 1.0 Page 4 of 19

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Service Guide SP-S110

Chapter 1. How to Handle Defective Returns

1.1 Overview

Function NG Function OK

FunctionNG

Function OK

Version 1.0 Page 5 of 19

Receiving Defective speaker from customers

Verifying problems

Proceeding

Necessary tests

Return the speakers with prope

repacking to customers

nalyzing possible

Malfunction cause

Deciding & proceeding the

Rectification methods

Replace necessary

Defective parts

Verifying problems

Proceeding

Necessary tests

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Service Guide SP-S110

1.2Problems

Item Problem Description

1.2.1 No power，LED （indicator）unlighted

1.2.2 No sound

1.2.3 Noise

1.2.4 LED indicators no light when working

1.2.5 Volume switch no use

1.2.6 Headphone jack no use

Version 1.0 Page 6 of 19

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Service Guide SP-S110

*Attention

Please follow the numbered sequence marked within parenthesis given in

individual

Flow chat in that this is the best-recommended sequence to rectify the problems.

1.2.1 No power，LED （indicator）unlighted

Problem

Analyze

and identify

the causes

Solutions

Version 1.0 Page 7 of 19

Dry-soldered secondary

wire of transformer

Defective o

damaged D1-D1

diode

Power switch poo

connected or defective

No power，LED （indicator）unlighted

Repair or replace

resolder or replace

Repair or replace

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Service Guide SP-S110

1.2.2 no sound

Problem

Analyze and

identify the

causes

Solutions

Version 1.0 Page 8 of 19

No sound

PCB damaged,

dry-soldered or

short-circuited

Power supply for IC

TDA2822 abnormal o

damaged

Repair, resolder o

replace

Repair or replace

Or VR1 damaged

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Service Guide SP-S110

1.2.3. Noise

Problem

Analyze and

identify the

causes

Solutions

Version 1.0 Page 9 of 19

Check and replace Repair or replace

Or VR poor connected;

Or Vibration from too

long lead wire of drive

units; or damaged/

short-circuited drive

units;

Repair

1. Filter capacitor not work,

dry-soldered, or diode damaged

2. Or Power supply for IC

TDA2822 abnormal

3. Or PCB broken o

dry-soldered

Noise

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Service Guide SP-S110

1.2.4. LED indicators no light when working

Problem

Analyze and

identify the

causes

Solutions

Version 1.0 Page 10 of 19

Check and replace

1. LED1 damaged or PCB copper foil broken

2. LED1 , R7 defective or dry-soldered

LED indicators no li

ht when workin

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