KYE Systems Corp. Genius SP-i177 Manuale utente

Service Guide Model No : SP-i177

SERVICE GUIDE

KYESYSTEMS CORP.

Page 1/15

Service Guide Model No : SP-i177

Revision Histor

Version

Date

Change

1.0

26/01/2011

First Release

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Service Guide Model No : SP-i177

Table of Contents

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

Table o Contents ……………….……………………………………………………3

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

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

Sa ety Precautions …….……………………………………………………..4

Chapter 1. How to Handle De ective Returns……………………………………..5

1.1 Speaker no sound

1.2 LED no light

1.3 Power/Volume Knob no unction

Chapter 2. Speci ications ………………………………………………………….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 or Sending the PCB Assembly by Post …..16

7.2 Short o Spare Parts while Repairing a Speaker System …………16

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Service Guide Model No : SP-i177

Getting Started

Conventions Used in this Guide

Pay Special Attention : Instructions that are important to remember and

may prevent mistakes .

Caution : In ormation that, i not ollowed, may result in damage to the

product .

Sa ety Precautions

The ollowing precautions should be observed in handling the speaker

Described in this guide :

Place the speakers on a lat, level and stable sur ace.

Do not place the speakers in environments subject to mist, smoke,

vibration, excessive dust, salty or greasy air, or other corrosive gases

and umes.

Do not drop or jolt the speakers.

Do not allow anything to drop into the subwoo er case through its

ventilator, as it could result in atal electric shock or ire .

Place the unit ar enough rom other equipments or good heat

dissipation .

Disconnect the AC power cord rom the AC outlet be ore per orming

any maintenance on the speakers .

Do not per orm any maintenance with wet hand .

Prevent oreign substances, such as water, other liquids or chemicals ,

From entering the speakers while per orming maintenance procedures

on the speakers .

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Service Guide Model No : SP-i177

Chapter 1. How to Handle Defective Returns

Overview

Receiving De ective speakers rom

Customers

Function NG

__ __

Analyzing possible mal unction

causes

Function NG Deciding & proceeding the

recti ication methods

Function OK

Replace necessary de ective parts

Function OK

Return the speakers with proper

repackaging to customers

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Service Guide Model No : SP-i177

Problems

Item Problem Description

1.1 Speaker no sound

1.2 LED no light

1.3 Power/Volume Knob no unction

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Service Guide Model No : SP-i177

Attention

Please ollow the numbered sequence marked within parenthesis given in individual Flow

chat, in that this is the best-recommended sequence to recti y the problems.

1.1 Speaker no sound (Line in jack no unction)

Problem

Analyze

and

Identi y

Cause

Solution

Speaker no sound

Component cold

solder or Short

Circuit

De ective U1 Speaker cable disconnect,

J1 de ective or speaker

damaged

Check solder

point on PCBA

Check and

Replace de ective

Reconnect speaker cable or

replace de ective speaker

driver and component

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Service Guide Model No : SP-i177

1.2 LED no light

Problem

Analyze and

Identi y the Causes

Solutions

Power LED no light

Component cold

solder or Short

Circuit

De ective U2,Q1

or Q2

BT1 or LED1 de ective

Check solder

point on PCBA

Check and

Replace de ective

or Transistor

Replace de ective LED or

Battery

Page 8/15

Service Guide Model No : SP-i177

1.3 Power/Volume Knob no unction

Problem

Analyze and

Identi y the Causes

Solution

Power/Volume no unction

Component cold

solder or Short

Circuit

VR1 de ective

Check solder

point on PCBA

Replace de ective VR1

Page 9/15

Service Guide Model No : SP-i177

Chapter 2. Specifications

NO.

Description

Unit

Specifications

Out Power at THD 10%

≧1.5

Sensitivit

600± 60

Freq. Response (1KHz -3dB)

70~20K ± 10%

4 S/N ratio

≧

≧≧

≧ 70

5 Hum & Noise (Vol.: max)

≦

≦≦

≦ 2

Page 10/15

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