KYE Systems Corp. Genius SP-U110 Manual de usuario

Service Guide

SP-U110

Version : 1.0

Page 1 of 15

SERVICE GUIDE

KYE SYSTEMS CORP.

SP-U110

Service Guide

SP-U110

Version : 1.0

Page 2 of 15

Version : 1.0

Revision History

Version Date Change

1.0 10/22/2010

Service Guide

SP-U110

Version : 1.0

Page 3 of 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 no function...……….…….……………….8

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

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

Chapter 4. Exploded View …………………………………………………...11~12

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

Service Guide

SP-U110

Version : 1.0

Page 4 of 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 USB cable from USB jack 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-U110

Version : 1.0

Page 5 of 15

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

Verify if the speaker is

functioning normally

Return the speakers with proper

repackaging to customer

Function NG

Function OK

Function NG

Service Guide

SP-U110

Version : 1.0

Page 6 of 15

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 no function

Service Guide

SP-U110

Version : 1.0

Page 7 of 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 IC1

Speaker cable

dis-connect or speaker

damaged

Check solder points on

PCB

Check and Replace

defective IC1

Re-connect speaker

cable or replace

defective speaker(s)

Analyzer and

Identify the Causes

Service Guide

SP-U110

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

R1, C1, C2

USB cord of

disconnected or defective

Re-solder or replace

defective component(s)

Analyzer and

Identify the Causes

Volume no function

Broken or short circuit Defective IC1, VR1,

Check solder points on PCB

Analyzer and

Identify the Causes

Check and Replace defective

components

Service Guide

SP-U110

Version : 1.0

Page 9 of 15

Chapter 2. Specifications

NO.

Description Unit

Specifications

1 Out Power at THD 10% W ≧0.25

2 Sensitivity mV

400 ±40

3 Freq. Response (Top -3dB) Hz 150~20K ± 10%

4 Separation dB ≧40

5 S/N ratio dB ≧60

6 Hum & Noise (Vol.: max) mV

≦ 2

Service Guide

SP-U110

Version : 1.0

Page 10 of 15

Chapter 3. Block Diagram

AUDIO

Volume

Increase

Power

Amplifier

R.CH Speaker

USB IN

L.CH Speaker

Volume

Decrease

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