Genius SP-i160 Manuale utente

Service Guide

SP-i160

SERVICE GUIDE

KYESYSTEMS CORP.

SP-i160

Version : 1.0

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Version : 1.0

Revision History

Version

Date

Change

1.0

15/01/ 010

Version : 1.0

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Service Guide

SP-i160

Table of Contents

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

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. Problems …………………………………………………………...6

1. .1 No sound (Line in jack no function) …………..…7

1. . Power LED (indicator) no light……...………....…8

1. .3 Li-ION battery can’t charge.…..….…………….8

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

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

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

Chapter 5. Part List ………………………………………………………………1

Chapter 6. Schematic Diagram …………………………………………………..13

Chapter 7. Important Notes ………………………………………………………14

7.1 Packing Requirement for Sending the PCB Assembly by Post …..14

7. Short of Spare Parts while Repairing a Speaker System …………14

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Service Guide

SP-i160

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

SP-i160

Chapter . How to Handle Defective Returns

1.1 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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SP-i160

1. Problems

Item Problem Description

1. .1 No sound (Line in jack no function)

1. . Power LED (indicator) no light

1. .3

Li-ION battery can’t charge

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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 One or more channels no sound (Line in jack no function)

Problem

No sound

Analyzer and

Identify the Causes

Broken or short circuit

Defective U1,

Speaker cable

dis-connect , JACK1 or

JACK defective or

speaker damaged

Solutions

Check solder points on

PCB

Check and Replace

defective IC

Re-connect speaker

cable or replace

defective speaker(s)

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1. . Power LED (indicator) no light

Problem

Power LED (indicator) no light

Analyzer and

Identify the Causes

Power switch or LED

defective

Defective

Solutions

Re-solder or replace

defective component(s)

1. .3 The Li-ION Battery can’t charge

Problem

The Li-ION battery can’t

charge

Analyzer and

Identify the Causes

Broken or short circuit

U Battery

Solutions

Check solder points on PCB Check and Replace defective

components

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SP-i160

Chapter 2. Specifications

NO.

Description

Unit

Specifications

Out Power at THD 0%

≧

≧≧

≧ .8

Sensitivity

600 ± 50

Freq. Response ( KHz -3dB)

80~20K ± 0%

Separation

≧

≧≧

≧ 40

S/N ratio

≧

≧≧

≧ 80

Hum & Noise (Vol.: max)

≦

≦≦

≦ 2

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Chapter 3. Block Diagram

Audio

—

►

Tone

Control

Volume

Control

—

►

L.CH Speaker

Power

Conditioner

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