Genius SP-HF2.0 800 Bedienungsanleitung

Service Guide SP-HF2.0 800

Version : 1.0 Page 1of 15

SERVICE GUIDE

KYESYSTEMS CORP.

SP-HF2.0 800

Version : 1.0

Service Guide SP-HF2.0 800

Version : 1.0 Page 2of 15

Revision History

Version Date Change

1.0 12/30/2004

Service Guide SP-HF2.0 800

Version : 1.0 Page 3of 15

Table of Contents

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

Table of Contents ……………………………………………………………………3

Getting Started ………………………………………………………………………4

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

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

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

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

1.2 Problems …………………………………………………………...6

1.2.1 One or more channels no sound ………………..… 7

1.2.2 Power LED (indicator) no light………………....… 8

1.2.3 Volume , Treble , Bass no function……..…………..8

Chapter 2. Specifications …………………………………………………………9

Chapter 3. Block Diagram ……………………………………………………….11

Chapter 4. Exploded View ……………………………………………………….12

Chapter 5. Part List ………………………………………………………………15

Chapter 6. Schematic Diagram …………………………………………………..17

Chapter 7. Important Notes ………………………………………………………19

7.1 Packing Requirement for Sending the PCB Assembly by Post …..19

7.2 Short of Spare Parts while Repairing a Speaker System …………19

Service Guide SP-HF2.0 800

Version : 1.0 Page 4of 15

Getting Started

Conventions Used in this 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 handling 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 .

Disconnect the AC power cord from the AC outlet before performing

any maintenance on the speakers .

Do not perform any maintenance with wet hand .

Prevent foreign substances, such as water, other liquids or chemicals ,

From entering the speakers while performing maintenance procedures

on the speakers .

Service Guide SP-HF2.0 800

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Chapter 1. How to Handle Defective Returns

1.1 Overview

Verifying problems

Proceeding necessary tests

Receiving Defective speakers form

Customers

Analyzing possible malfunction

causes

Deciding & proceeding the

rectification methods

Replace necessary defective parts

Proceeding tests to

Verify if the speaker is

functioning normally

Return the speakers with proper

repackaging to customers

Function NG

Function OK

Function NG

Service Guide SP-HF2.0 800

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1.2 Problems

Item Problem Description

1.2.1 One or more channels no sound

1.2.2 Power LED (indicator) no light

1.2.3 Volume , Treble , Bass no function

Service Guide SP-HF2.0 800

Version : 1.0 Page 7of 15

Attention

1.2.1 One or more channels no sound

Problem

Solutions

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 .

One or more channels no sound

Broken or short circuit

Defective U2

Speaker cable dis-connect or

speaker damaged

Check solder points on

PCB

Check and Replace

defective IC

Re-connect speaker cable or

replace defective speaker(s)

Analyzer and

Identify the Causes

Service Guide SP-HF2.0 800

Version : 1.0 Page 8of 15

1.2.2 Power LED (indicator) no light

Problem

Solutions

1.2.3 Volume , Treble , Bass no function

Problem

Solutions

Power LED (indicator) no light

Power switch or LED defective

Defective,D5-8,

ZD1,ZD2,r21,R44,

C24,C27

Dc cord of transformer

disconnected or defective

Re-solder or replace

defective component(s)

Analyzer and

Identify the Causes

Volume , Treble ,Bass no

function

Broken or short circuit

DefectiveU1,VR1,VR2,VR3

,R5-12,C3-10,C13-14

Check solder points on PCB

Analyzer and

Identify the Causes

Check and Replace defective

components

Service Guide SP-HF2.0 800

Version : 1.0 Page 9of 15

Chapter 2. Specifications

NO.

Description Unit

Specifications

1Out Power at THD 10% W≧10

2Sensitivity mV

650 ±70

3Freq. Response (Ref:-3dB) Hz 90Hz~20KHz ±10%

4Separation dB ≧40

5S/N ratio dB ≧60

6Hum & Noise Vol:max mV

≦10

Service Guide SP-HF2.0 800

Version : 1.0 Page 10 of 15

Chapter 3. Block Diagram

AUDIO IN

Bass

Control

Power

Amplifier

Host Speaker

AC IN

Satellite Speaker

Treble

Control

Volume

Control

Transformer

Filter

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