KYE Systems Corp. Genius SP-i300 Manuale utente

Service Guide Model No : SP-i300

SERVICE GUIDE

KYESYSTEMS CORP.

Service Guide Model No : SP-i300

Revision Histor

Version

Date

Change

1.0

05/10/2010

First Release

Page 2/15

Service Guide Model No : SP-i300

Table of Contents

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

Table of Contents ……………….……………………………………………………

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

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

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

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

1.1 Speaker no sound

1.2 LED no light

1. Power/Volume Knob no function

Chapter 2. Specifications ………………………………………………………….10

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

Chapter 4. Exploded View …………………………………………………12 & 1

Chapter 5. Part List ………………………………………………………………14

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

Page /15

Service Guide Model No : SP-i300

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 .

Page 4/15

Service Guide Model No : SP-i300

Chapter 1. How to Handle Defective Returns

Overview

Receiving Defective speakers from

Customers

Function NG

_ ___

Analyzing possible malfunction

causes

Function NG Deciding & proceeding the

rectification methods

Function OK

Replace necessary defective parts

Function OK

Return the speakers with proper

repackaging to customers

Page 5/15

Service Guide Model No : SP-i300

Problems

Item Problem Description

1.1 Speaker no sound

1.2 LED no light

1. Power/Function Knob no function

1.4 USB no function

Page 6/15

Service Guide Model No : SP-i300

Attention

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.

1.1 Speaker no sound (Line in jack no function)

Problem

Analyze

and

Identify

Cause

Solution

Speaker no sound

Component cold

solder or Short

Circuit

Defective U2, U5,

Speaker cable disconnect,

USBJack1, J2 defective

or speaker damaged

Check solder

point on PCBA

Check and

Replace defective

Reconnect speaker cable or

replace defective speaker

driver and component

Page 7/15

Service Guide Model No : SP-i300

1.2 LED no light

Problem

Analyzer and

Identify the Causes

Solutions

1. Power/Function Knob no function

Problem

Analyzer and

Identify the Causes

Solutions

Power LED no light

Component cold

solder or Short

Circuit

Defective U1, U2,

U4, U6, U7 or Y1

BT1 or LED1, LED2

defective

Check solder

point on PCBA

Check and

Replace defective

Crystal

Replace defective LED or

Battery

Page 8/15

Power/Function Knob no

function

Component cold

solder or Short

Circuit

Defective U2 or

VR-SW J1 or SW1 ,SW2,

SW , SW4 defective

Check solder

point on PCBA

Check and

Replace defective

or Crystal

Replace defective VR or

Tact SW

Service Guide Model No : SP-i300

1. USB no function

Problem

Analyzer and

Identify the Causes

Solution

USB no function

Component cold

solder or Short

Circuit

U2, U or CON1 efective

Check solder

point on PCBA

Check and Replace

defective U2, U or CON1

Page 9/15

Service Guide Model No : SP-i300

Chapter 2. Specifications

NO.

Description

Unit

Specifications

Out Power at THD 10%

≧1.5

Sensitivit

600± 60

Freq. Response (1KHz -3dB)

120~20K ± 10%

4 S/N ratio

≧

≧≧

≧ 70

5 Hum & Noise (Vol.: max)

≦

≦≦

≦ 2

Page 10/15

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