KYE Systems Corp. Genius SP-N200 User manual

Service Guide SP-N200

Version : 1.0 Page 1 of 15

SERVICE GUIDE

KYE SYSTEMS CORP.

SP-N200

Service Guide SP-N200

Version : 1.0 Page 2 of 15

Version : 1.0

Revision History

Version Date Change

1.0 09/20/2007

Service Guide SP-N200

Version : 1.0 Page 3 of 15

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 Overview …………………………………………………………..5

1.2 Problems …………………………………………………………...6

1.2.1 One or more channels no sound ………………..…7

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

1.2.3 Volume no function...…………………….………..8

Chapter 2. Specifications …………………………………………………………9

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

Chapter 4. Exploded View ……………………………………………………….12

Chapter 5. Part List ………………………………………………………………15

Chapter 6. Schematic Diagram …………………………………………………..17

Chapter 7. Important Notes ………………………………………………………19

7.1 Packing Requirement for Sending the PCB Assembly by Post …..19

7.2 Short of Spare Parts while Repairing a Speaker System …………19

Service Guide SP-N200

Version : 1.0 Page 4 of 15

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 .

Service Guide SP-N200

Version : 1.0 Page 5 of 15

Chapter 1. How to Handle Defective Returns

1.1 Overview

Receiving Defective speaker form customers

Analyzing possible

malfunction causes

Deciding & proceeding the

rectification methods

Replace necessary

defective

arts

Return the speakers with proper

acka

to customers

Verifying problems

proceeding

necessar

tests

Proceeding tests to

verify if the speaker is

functionin

normall

Function OK

Function NG

Function OKFunction NG

Service Guide SP-N200

Version : 1.0 Page 6 of 15

1.2 Problems

Item Problem Description

1.2.1 One or more channels no sound

1.2.2 Power LED (indicator) no light

1.2.3 Volume no function

Service Guide SP-N200

Version : 1.0 Page 7 of 15

Attention

1.2.1 One or more channels no sound

Problem

Solutions

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.

One or more channels no sound

Broken or short circuit

Defective IC

Speaker cable dis-connect or

speaker damaged

Check solder points on

PCB

Check and Replace

defective IC

Re-connect speaker cable or

replace defective speaker(s)

Analyzer and

Identify the Causes

Service Guide SP-N200

Version : 1.0 Page 8 of 15

1.2.2 Power LED (indicator) no light

Problem

Solutions

1.2.3 Volume no function

Problem

Solutions

Power LED (indicator) no light

Power switch or LED defective

Defective SW, R17,

R20,T2,D1,D2,D3,D4

Ac cord of transformer

disconnected or defective

Re-solder or replace

defective component(s)

Analyzer and

Identify the Causes

Volume no function

Broken or short circuit

Defective R1, ,R2, R7,R8,R9,

R10,VR,C7,C8,IC

Check solder points on PCB

Analyzer and

Identify the Causes

Check and Replace defective

components

Service Guide SP-N200

Version : 1.0 Page 9 of 15

Chapter 2. Specifications

NO. Description Unit Specifications

1 Out Power at THD 10% W >

2.8

2 Sensitivity mV 460 ±60

3 Freq. Response (Ref:-3dB) Hz 50Hz ~ 20KHz

4 Separation dB 40

BdoitarN/S5 45

6 Hum & Noise (Vol.: max) mV < 5

Service Guide SP-N200

Version : 1.0 Page 10 of 15

Chapter 3. Block Diagram

AUDIO IN

Volume

Increase Power

Amplifier

R.CH Speaker

AC IN

L.CH Speaker

Volume

Decrease

Power

Conditioner

Table of contents

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