Genius KYE Systems SP-i350 Manual de usuario

ServiceGuide SP-i350

Version : 1.0 Page 1 of 15

SERVICE GUIDE

KYESYSTEMS CORP.

SP-i350

Version : 1.0

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ServiceGuide SP-i350

Version : 1.0 Page 2 of 15

RevisionHistory

Version Date Change

1.0 03/09/2006

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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 no function...…………………….………..8

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

Chapter 3. Block Diagram ……………………………………………………….10

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

Chapter 5. Part List ……………………………………………………………12-13

Chapter 6. Schematic Diagram …………………………………………………..14

Chapter 7. Important Notes ………………………………………………………15

7.1 Packing Requirement for Sending the PCB Assembly by Post …..15

7.2 Short of Spare Parts while Repairing a Speaker System …………15

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ServiceGuide SP-i350

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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-i350

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Chapter 1. How to Handle Defective Returns

1.1 Overview

Verifying problems

Proceeding necessary tests

Receiving Defective speakers from

Customers

Analyzing possible malfunction

causes

Deciding & proceeding the

rectification methods

Replace necessary defective parts

Proceeding tests to

Verif

if the s

eaker is

functionin

normall

Return the speakers with proper

repackaging to customers

Function NG

Function OK

Function NG

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ServiceGuide SP-i350

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1.2 Problems

Item Problem Description

1.2.1 Oneormorechannelsnosound

1.2.2 PowerLED(indicator)nolight

1.2.3 Volumenofunction

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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 IC1 ;IC2

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-i350

Version : 1.0 Page 8 of 15

1.2.2 Power LED (indicator) no light

Problem

Solutions

1.2.3 Volume no function

Problem

Solutions

Power LED (indicator) no light

Power switch or LED defective

Defective,IC3

DC cord of transformer

disconnected or defective

Re-solder or replace

defective component(s)

Analyzer and

Identify the Causes

Volume no function

Broken or short circuit

Defective IC1 & nearby

components.

Check solder points on PCB

Analyzer and

Identify the Causes

Check and Replace defective

components

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ServiceGuide SP-i350

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Chapter 2. Specifications

NO. Description Unit Specifications

1 Out Power at THD 10% W ≧5

2 Sensitivity mV 400 ±50

3 Freq. Response (Ref:-3dB) Hz 35Hz ~ 20KHz

4 Separation dB ≧40

5 S/N ratio dB 70 ±5

6 Hum & Noise Vol:max mV ≦ 10

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ServiceGuide SP-i350

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Chapter 3. Block Diagram

AUDIO IN

Volume

Increase

Power

Amplifier

R.CH Speaker

AC IN

L.CH Speaker

Volume

Decrease

Power

Conditioner

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