KYE Systems Corp. Genius SP-HF1201A Manual de usuario

Service Guide Model No : SP-HF1201A

SERVICE GUIDE

KYESYSTEMS CORP.

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Service Guide Model No : SP-HF1201A

Revi ion Hi tory

Version

Date

Change

1.0

16/04/2010

First Release

Page 2/19

Service Guide Model No : SP-HF1201A

Table of Content

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

Ta le 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&18

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

7.1 Packing Requirement for Sending the PCB Assem ly y Post …..19

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

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Service Guide Model No : SP-HF1201A

Getting Started

Conventions Used in this Guide

Pay Special Attention : Instructions that are important to remem er and

may prevent mistakes .

Caution : Information that, if not followed, may result in damage to the

product .

Safety Precautions

The following precautions should e o served in handling the speaker

Descri ed in this guide :

Place the speakers on a flat, level and sta le surface.

Do not place the speakers in environments su ject to mist, smoke,

vi ration, 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 su woofer 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 efore performing

any maintenance on the speakers .

Do not perform any maintenance with wet hand .

Prevent foreign su stances, such as water, other liquids or chemicals ,

From entering the speakers while performing maintenance procedures

on the speakers .

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Service Guide Model No : SP-HF1201A

Chapter 1. How to Handle Defective Return

Overview

Receiving Defective speakers from

Customers

Function NG

__ __

Analyzing possi le 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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Service Guide Model No : SP-HF1201A

Pro lems

Item Pro lem Description

1.1 Speaker no sound

1.2 Power LED no light

1.3 Headphone no sound

1.4 Bass/Tre le/Volume no function

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Service Guide Model No : SP-HF1201A

Attention

Please follow the num ered sequence marked within parenthesis given in individual Flow

chat, in that this is the est-recommended sequence to rectify the pro lems.

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

Pro lem

Analyze

and

Identify

Cause

Solution

Speaker no sound

Component cold

solder or Short

Circuit

Defective U8

Speaker ca le disconnect,

Jack2 or J2 defective or

speaker damaged

Check solder

point on PCBA

Check and

Replace defective

Reconnect speaker ca le or

replace defective speaker

driver and component

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Service Guide Model No : SP-HF1201A

1.2 Power LED no light

Pro lem

Analyzer and

Identify the Causes

Solutions

1.3 Headphone no sound

Pro lem

Analyzer and

Identify the Causes

Solution

Power LED no light

Component cold

solder or Short

Circuit

Defective

U1,U2,U3,T1 or

Power Switch or LED

defective

Check solder

point on PCBA

Check and

Replace defective

IC or Fuse

Replace defective Power

Switch or LED

Headphone no sound

Component cold

solder or Short

Circuit

JK1 Phone jack defective

Check solder

point on PCBA

Replace defective JK1

Phone jack

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Service Guide Model No : SP-HF1201A

1.4 Bass/Tre le/Volume no function

Pro lem

Analyzer and

Identify the Causes

Solution

Bass/Volume no function

Component cold

solder or Short

Circuit

VR1 or VR2 defective

Check solder

point on PCBA

Replace defective VR1 or

VR2

Page 9/19

Service Guide Model No : SP-HF1201A

Chapter 2. Specification

NO.

De cription

Unit

Specification

Out Power at THD 10%

≧15

Sen itivity

600± 50

Freq. Re pon e (1KHz -3dB)

65~20K ± 10%

Separation

≧

≧≧

≧ 40

5 S/N ratio

≧

≧≧

≧ 70

6 Hum & Noi e (Vol.: max)

≦

≦≦

≦ 2

Page 10/19

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