Genius SP-HF1800A Manuel utilisateur

ServiceGuide SP-HF1800A

Version : 1.0 Page 1 of 16

SERVICE GUIDE

KYE SYSTEMS CORP.

SP-HF1800A

Version : 1.0

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ServiceGuide SP-HF1800A

Version : 1.0 Page 2 of 16

RevisionHistory

Version Date Change

1.0 7/16/2009

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ServiceGuide SP-HF1800A

Version : 1.0 Page 3 of 16

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 ……………………………………………….……….10

Chapter 4. Exploded View ……………………………………………….……….11

Chapter 5. Part List …………………………………………………….…………13

Chapter 6. Schematic Diagram ……………………………………….………..14-15

Chapter 7. Important Notes …………………………………………….…………16

7.1 Packing Requirement for Sending the PCB Assembly by Post …...16

7.2 Short of Spare Parts while Repairing a Speaker System ……….…16

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ServiceGuide SP-HF1800A

Version : 1.0 Page 4 of 16

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 .

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ServiceGuide SP-HF1800A

Version : 1.0 Page 5 of 16

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

Ver if

if the s

eaker is

functionin

normall

etu

spea

ope

repackaging to customers

Function NG

Function OK

Function NG

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ServiceGuide SP-HF1800A

Version : 1.0 Page 6 of 16

1.2 Problems

Item Problem Description

1.2.1 Oneormorechannelsnosound

1.2.2 PowerLED(indicator)nolight

1.2.3 Volume,Treble,Bassnofunction

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ServiceGuide SP-HF1800A

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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 IC50,

IC1, IC2, CON3,

CON5

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

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ServiceGuide SP-HF1800A

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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 JK2,

Q101, R6, Z101,

CON4

AC 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 Defective VR1, VR2, VR3,

C13, C23, C14, C24, C15,

C25, R15, R25

Check solder points on PCB

Analyzer and

Identify the Causes

Check and Replace defective

components

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ServiceGuide SP-HF1800A

Version : 1.0 Page 9 of 16

Chapter 2. Specifications

NO. Description Unit Specifications

1 Out Power at THD 10% W ≧25

2 Sensitivity mV 600 ±60

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

4 Separation dB ≧40

5 S/N ratio dB ≧70

6 Hum & Noise Vol:max mV ≦ 2

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ServiceGuide SP-HF1800A

Version : 1.0 Page 10 of 16

Chapter 3. Block Diagram

AUDIO IN

Bass

Control

Power

Amplifier

R.CH Speaker

AC IN

L.CH Speaker

Treble

Control

Vo l u m e

Control

Transformer Filter

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