KYE Systems Corp. Genius SP-I250G Manual de usuario

Service Guide Model No : SP-I250G

SERVICE GUIDE

KYESYSTEMS CORP.

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Service Guide Model No : SP-I250G

Revision History

Version

Date

Change

1.0

22/09/2011

First Release

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Service Guide Model No : SP-I250G

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 Speaker no sound

1.2 LED no light

1.3 Power/Volume Knob no function

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

Chapter 3. Block Diagram ……………………………………………………….11

Chapter 4. Exploded View …………………………………………………12 & 13

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

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Service Guide Model No : SP-I250G

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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Service Guide Model No : SP-I250G

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

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Service Guide Model No : SP-I250G

Problems

Item Problem Description

1.1 Speaker no sound

1.2 LED no light

1.3 Power/Volume Knob no function

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Service Guide Model No : SP-I250G

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 Speaker cable disconnect,

USB1 defective or

speaker damaged

Check solder

point on PCBA

Check and

Replace defective

Reconnect speaker cable or

replace defective speaker

river and component

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Service Guide Model No : SP-I250G

1.2 LED no light

Problem

Analyzer and

Identify the Causes

Solutions

Power LED no light

Component cold

solder or Short

Circuit

Defectiv

e U

,Q1

or Q2

BT1

or L

, LED2

defective

Check solder

point on PCBA

Check and

Replace defective

or Transistor

eplace defectiv

LED or

Battery

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Service Guide Model No : SP-I250G

1.3 Power/Volume Knob no function

Problem

Analyzer and

Identify the Causes

Solution

Power/Volume no function

Component cold

solder or Short

Circuit

VR1 efective

Check solder

point on PCBA

Replace defective VR1

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Service Guide Model No : SP-I250G

Chapter 2. Specifications

NO.

Description

Unit

Specifications

Out Power at THD 10%

≧

1.5

Sensitivity

600± 60

Freq. Response (1KHz -3dB)

70~20K ± 10%

4 S/N ratio

≧

≧≧

≧

5 Hum & Noise (Vol.: max)

≦

≦≦

≦

Cross talk dB

≧

≧≧

≧

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