KYE Systems Corp. Genius SP-HF360A User manual

Service Guide SP-HF360A

SERVICE GUIDE

KEY SYSTEM CORP

Version 1.0 Page 1 of 21

Service Guide SP-HF360A

Revision History

Version Date Change

1.0 06/08/2009

Version 1.0 Page 2 of 21

Service Guide SP-HF360A

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

Table of contents……………………………………………………………...…3

Getting Start…………………………………………………….………………...4

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

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

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

1.2 Problem………………………………………………………………………6

1.2.1 No power，LED （indicator）unlighted……………………………….7

1.2.2 No sound…………………………………………………………….…….8

1.2.3 Right channel no sound........….……….……….……….……..….……9

1.2.4 Left channel no sound….………..……….……………….……….……10

1.2.5 Noise………………………………….…………………………….…..…11

1.2.6 LED indicators no light…………………………….….……………..….12

1.2.7 No volume change when rotating VR…………………………….…..13

1.2.8 No sound when input jack is used……..…………….…………..…..14

Chapter 2. Specification………………………………….……………….……15

Chapter 3. Block diagram…………………………………………..…………..16

Chapter 4. Exploded view………………………………………………………17

Active speaker…………..…….……………………………………….……….17

Passive speaker………………………………………..…….…………………18

Chapter 5. Part list…………………………………… …………….…………...19

Active speaker…………………………………………………………………...19

Passive speaker………..…………………………………………………….…19

Chapter 6 Important notes………………………………………………..…….20

Chapter 7 Schematic diagram……………………………………..……………21

Version 1.0 Page 3 of 21

Tabl

e of Contents

Service Guide SP-HF360A

Getting Started

Conventions Used in the 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 handing 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.

Do not perform any maintenance with wet hand.

Preventforeignsubstance,such as water, other liquids or chemical, from entering

the speakers while performing maintenance procedures on the speakers.

Version 1.0 Page 4 of 21

Service Guide SP-HF360A

Chapter 1. How to Handle Defective Returns

1.1 Overview

Function NG Function OK

FunctionNG

FunctionOK

Version 1.0 Page 5 of 21

Receiving Defective speaker from customers

Return the speakers with proper

repacking to customers

Verifying problems

Proceeding

Necessary tests

Analyzing possible

Malfunction cause

Deciding & proceeding the

Rectification methods

Replace necessary

Defective parts

Verifying problems

Proceeding

Necessary tests

Service Guide SP-HF360A

1.2 Problems

Item Problem Description

1.2.1 No power，LED （indicator）no light

1.2.2 No sound

1.2.3 Right or left channel no sound

1.2.4 Woofer no sound

1.2.5 Noise

1.2.6 LEDindicatornolight

1.2.7 No volume change when rotating VR

1.2.8 No sound when input jack is used

Version1.0 Page6of21

Service Guide SP-HF360A

*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.

1.2.1 No power，LED （indicator）unlighted

Problem

Analyze

and

identify

the

causes

Solutions

Version 1.0 Page 7 of 21

No power，LED （indicator）unlighted

Repair or replace

1. Defective transformer

2. Defective or damaged AC

cable or power switch

resolder or replace

Or caused by the following:

1. Transformer secondary wire loosely connected with PT1

jack in SP-HF360A PC

2. Copper foil of PCB broken

Service Guide SP-HF360A

1.2.2 No sound

Problem

Analyze and

identify the

causes

]

Solutions

Version 1.0 Page 8 of 21

No sound

PCB

short-circuited, dry

soldered or

broken;

Audio cable loosely

connected or broken

Repair or replace

Or caused by the following

components:

IC1, IC2 or EC6 in PCB defective

Q1 damaged

Repair, resolder or

replace

Service Guide SP-HF360A

1.2.3 Right channel no sound

Problem

Analyze and

identify the

causes

Solutions

Version 1.0 Page 9 of 21

PCB damaged, dry-soldered

or short-circuited;

VR1, VR2 damaged or

loose-connected

IC1, IC2 damaged

1. Driver unit or speaker

cable defective or loosely

connected

2. The 3.5 mm plug of

Audio cable defective or

loosely connected

Replace or

replace

Repair or

replace

Right channel no sound

Service Guide SP-HF360A

1.2.4 Left channel no sound

Problem

Analyze and

identify the

causes

Solution

Version 1.0 Page 10 of 21

Repair or replace Replace

1. Driver unit or speaker

cable defective or loosely

connected

2. The 3.5 mm plug of

Audio cable defective or

loosely connected

1. PCB damaged, dry-soldered

or short-circuited;

2. VR1, VR2 damaged or

loose-connected

IC1, IC2 damaged

Left channel no sound

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