KYE Systems Corp. SP-HF2020 Manual de usuario

Service Guide Model No : SP-HF2020

SERVICE GUIDE

KYESYSTEMS CORP.

Page 1/16

Service Guide Model No : SP-HF2020

Revision His ory

Version

Date

Change

1.0

11/04/2011

First Release

2.0

14/04/2011

Data Update

Page 2/16

Service Guide Model No : SP-HF2020

Table of Con en s

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 Power LED no light

1.3 Headphone no sound

1.4 Bass/Volume 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

Page 3/16

Service Guide Model No : SP-HF2020

Ge ing S ar ed

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 .

Page 4/16

Service Guide Model No : SP-HF2020

Chap er 1. How o Handle Defec ive Re urns

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

Page 5/16

Service Guide Model No : SP-HF2020

Problems

Item Problem Description

1.1 Speaker no sound

1.2 LED no light

1.3 EQ/Source button no function

1.4 Remote control no function

Page 6/16

Service Guide Model No : SP-HF2020

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/Coaxial in no function)

Problem

Analyze

and

Identify

Cause

Solution

Speaker no sound

Component cold

solder or Short

Circuit

Defective IC1,IC3

& IC4

Speaker cable disconnect,

JK2,CN5, CN6 defective

or speak

er damaged

Check solder

point on PCBA

Check and

Replace defective

Reconnect speaker cable or

replace defective speaker

driver and component

Page 7/16

Service Guide Model No : SP-HF2020

1.2 LED no light

Problem

Analyzer and

Identify the Causes

Solutions

1.3 EQ/Source no Function

Problem

Analyzer and

Identify the Causes

Solution

LED no light

Component cold

solder or Short

Circuit

Defective

IC5,IC6,IC7,U101

,F1,T1,U1

Power Switch or LED

defective

Check solder

point on PCBA

Check and

Replace defective

or Fuse

Replace defective Power

Switch or LED

EQ/Source/Volume no

function

Component cold

solder or Short

Circuit

U101,S100,VR100 or

S101 defective

Check solder

point on PCBA

Replace defective IC,VR

or Switch

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Service Guide Model No : SP-HF2020

1.4 Remote control no function

Problem

Analyzer and

Identify the Causes

Solution

Remote control no function

Component cold

solder or Short

Circuit

RF100 or Remote hand

set defective

Check solder

point on PCBA

Replace defective RF100

or Remote hand set

Page 9/16

Service Guide Model No : SP-HF2020

Chap er 2. Specifica ions

NO.

Descrip ion

Uni

Specifica ions

Ou Power a THD 1%

≧23

Sensi ivi y

300± 60

Freq. Response (1KHz -3dB)

31~16K ± 10%

Separa ion

≧

≧≧

≧ 40

5 S/N ra io

≧

≧≧

≧ 70

6 Hum & Noise (Vol.: max)

≦

≦≦

≦ 2

Page 10/16

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