KYE Systems Corp. Genius SP-U110 Manuale utente

Service Guide SP-U110

SERVICE GUIDE

KEY SYSTEM CORP

Service Guide SP-U110

Revision History

Version Date Change

1.0 2010-09-06

Service Guide SP-U110

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

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

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

1.2.2 No sound…………………………………………………………….…….8

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

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

Chapter 2. Specification……………………………………………….….……11

Satellite……………………………………………………..…………….……11

Chapter 3. Block diagram…………………………………………..……...…..12

Chapter 4. Part list…………………………………… …………….………….13

Chapter 5 Important notes……………………………………………………...14

Chapter 6. Exploded view………………………………………………...……15

Right Satellite…………………………………………………..…….…...……15

Left Satellite…………………………………………………………………….16

Chapter 7 Schematic diagram……………………………………..…….………17

Service Guide SP-U110

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 SP-U110

Chapter 1 How to Handle Defective Returns

1.1 Overview

FUNCTION NG

Receiving Defective speaker from customers

Verifying problems

proceeding necessary

tests

FUNCTION NG FUNCTION OK

Analyzing possible, Main function cause

Deciding & Proceeding the Rectification

methods

Verifying problems

Proceeding Necessary

tests

Replace Necessary defective parts

FUNCTION OK

Return the speakers with proper repacking to

customers

Service Guide SP-U110

1.2 Problems

Item ItemProblemDescription

1.2.1 No power，LED （indicator）no light

1.2.2 No sound

1.2.3 Right or left channel no sound

1.2.4 Noise

Service Guide SP-U110

Attention

1.2.1 No power, LED (indicator) unlighted

Problem

Analyze

and

identify

the

causes

Solutions

Defective USB cable

Defective RES R15

Repair or replace Re-solder or replace

No power，LED （indicator）unlighted

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.

Service Guide SP-U110

1.2.2 No Sound

Problem

Analyze

and identify

thecauses

Solutions

Repair,

re-solder or

Replace

Repair or

Replace

Repair or

Replace

Or caused by the

following defective

components

1. U2 D2822 in AMP

PCBA

VR3 broken or

short-circuited to

GND

PCB

short-circuited,

dry soldered or

broken

No Sound

Service Guide SP-U110

1.2.3 Right or left channel no sound

Problem

Analyze

and identify

thecauses

Solutions

Repair or

Replace

Repair or

Replace

Repair or

Replace

VR defective in AMP

PCBA

Driver unit or speaker

cable defective or

loosely connected

Audio cable defective

or loosely connected

PCB damaged,

dry-soldered or

short-circuited;

AMP PCBA

are loosely

connected

Right or left channel no sound

Service Guide SP-U110

1.2.4 Noise

Problem

Analyze

and identify

thecauses

Solutions

Repair or

replace

Check and

replace

Repair

Driver units damaged

Woofer cabinet leaks,

closed not well

Or caused by

vibration from too

long lead wire of

driver units

The power supply

of each IC is

normal or not

Noise

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