KYE Systems Corp. Genius SW-HF2.1 1205 Manual de usuario

Service Guide SW-HF2.1 1205

SERVICE GUIDE

KEY SYSTEM CORP

Model No.: SW-HF2.1 1205

Service Guide SW-HF2.1 1205

Revision History

Version Date Change

1.0 2010-4-16

Service Guide SW-HF2.1 1205

Table of Contents

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

1.1 Overview………………………………………………………………………………………..5

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

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

1.2.2 Sub Woofer No sound………………………………………………………………………...8

1.2.3 Right or left channel no sound………………………………………………………………..9

1.2.4 Noise………………………………………………………………………………………….10

1.2.5 LED indicators no light……………………………………………………………………....11

Chapter 2. Specification……………………………………………………………………………14

Satellite…………………………………………………………………………………………......14

Chapter 3. Block diagram…………………………………………………………………………..15

Chapter 4. Part list………………………………………………………………………………….16

Chapter 5 Important notes………………………………………………………………………….17

Chapter 6. Exploded view………………………………………………………………………….18

Subwoofer….………………………………………………………………………………………18

Satellite……………………………………………………………………………………………..19

Chapter 7 Schematic diagram………………………………………………………………………20

Service Guide SW-HF2.1 1205

Getting Started

Conventions Used in the Guide

Pay Special Attention: Instructions that are important to remember and may prevent mistakes.

Caution: Information that, if not 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.

Do not allow anything to drop 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.

Prevent foreign substance, such as water, other liquids or chemical, from entering the speakers while

performing maintenance procedures on the speakers.

Service Guide SW-HF2.1 1205

Chapter 1 How to Handle Defective Returns

1.1 Overview

Receiving Defective speaker from customers

FUNCTION NG

Verifying problems

proceeding necessary

tests

FUNCTION NG FUNCTION OK

Analyzing possible, Main function cause

Deciding & Proceeding the Rectification

methods

Replace Necessary defective parts

Verifying problems

Proceeding Necessary

tests

FUNCTION OK

Return the speakers with proper repacking to

customers

Service Guide SW-HF2.1 1205

1.2 Problems

Item ItemProblemDescription

1.2.1 No power，LED （indicator）no light

1.2.2 Sub woofer No sound

1.2.3 Right or left channel no sound

1.2.4 Noise

1.2.5 LED indicator no light

Service Guide SW-HF2.1 1205

Attention

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

Please follow the numbered sequence marked within parenthesis given in individual

1.2.1 No power, LED (indicator) unlighted,No Sound

Problem

Analyze

and

identify

the

causes

Solutions

Defective transformer

Defective or damaged AC

cable or power switch

Or caused by the following:

1. Transformer secondary wire loosely

connected with AC1 jack in SW-HF2.1

1205 AMP PCBA.

2. Copper foil of SW-HF2.1 1205 AMP

PCBA broken

3.Swich on functional board is defective

Repair or replace Re-solder or replace

No power，LED （indicator）unlighted No

Sound

Service Guide SW-HF2.1 1205

1.2.2 Subwoofer No Sound

Problem

Analyze

and identify

thecauses

Solutions

Repair or

Replace

Repair,

re-solder or

Replace

SUB Woofer No Sound

Driver unit or

speaker cable

defective or

loosely

connected

AMP IC IC1

Destroyed SW-HF2.1

1205 AMP PCBA

Or caused by the

following defective

components

1. IC4 in AMP PCBA

2. 4VR2，4CN1，in

SW-HF2.11205 Control

panel

Service Guide SW-HF2.1 1205

1.2.3 Right or left channel no sound

Problem

Analyze

and identify

thecauses

Solutions

AMP IC IC2

IC3 defected in

SW-HF2.1 1205

AMP PCBA

Driver unit or speaker

cable defective or

loosely connected

Audio cable defective

or loosely connected

Control panel

4VR1 defected

4CN2 defective or

loosely connected

Replace

Repair or

Replace

repaire or

Re-connect,

replace

Right or left channel no sound

Service Guide SW-HF2.1 1205

1.2.4 Noise

Problem

Analyze

and identify

thecauses

Solutions

Filter capacitor

/diode

dry-soldered or

damaged,

please check

1D1 1D2 1D3

1D4 1C18

1C19 in AMP

defective or

not;

The power

supply of each

IC is normal or

not

Or caused by

vibration from too

long lead wire of

driver units

Driver units damaged

Woofer cabinet leaks,

closed not well

Repair

Check and

replace

Repair or

replace

Noise

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