Genius SP-HF1250A User manual

S

E

R

V

I

C

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G

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KYE SYSTEMS CORP.

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H

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5

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A

Version:1.0

Total 16 Pages (Cover Page included)

Version: 1.0 Page 1/15

Version Date Changes

1．0

Official Release

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SP-HF1250A

Revision Histor

y

Version: 1.0 Page 2/15

Revision History……………………………………………………………………..1

Table of Contents………………………………………………… ………….2

Getting Started………………………………………………… ……….……………....3

Conventions Used in this Guide………………… ………...……………….3

Safety Precautions……………………………… ………………...………..3

Chapter1. How to Handle Defective Returns………………… ……………………….4

1.1 Overview……………………………………………………………….4

1.2 Problems………………………………………………………………..5

1.2.1 Power LED (indicator) Unlighted………………...……………......6

1.2.2 Does not work or one channel no sound……………………….…..7

1.2.3 Noise……………………………………………………………….7

Chapter2. Specifications………………………………………………………………..8

Chapter3. Block Diagram……………………………………………………………....9

Chapter4. Exploded View…………………………………………………………….…10-11

Chapter5. Part List……………………………………………………………………..12-13

Chapter6. Important Notes…………………………………………………………....14

6.1 Packing Requirement for sending the PCB Assembly by post……….…14

6.2 Short of Spare Parts while Repairing a Speaker System…………….….14

Chapter7. Circuit Schematic……………………………………………………………15

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Table of Contents

Version: 1.0 Page 3/15

Conventions Used in this Guide

Pay Special Attention: Instructions that are important to

remember and may prevent mistakes.

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 substance, such as water, other liquids or chemicals, from entering the speakers

while performing maintenance procedures on the speakers.

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SP-HF1250A

Getting Started

Attention

Caution: Information that, if not followed, may result in

damage to the product.

Version: 1.0 Page 4/15

1.1 Overview

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Chapter 1. How to Handle Defective Returns

Receiving Defective

Speakers

from Customers

Verifying problems&

Proceeding necessary tests

Analyzing possible

Malfunction causes

Deciding & proceeding

the rectification methods

Replacing necessary

Defective parts

Proceeding tests

To verify if the speaker is

functioning normally

Functioning OK

Return the speakers with

Pro

p

er re

p

acka

g

in

g

to customers

Functioning NG

Functioning OK

Functioning NG

Version: 1.0 Page 5/15

1.2 Problems

Item Problem descriptions

1.2.1 Power LED (indicator) unlighted

1.2.2 Does not work or one channel no sound

1.2.3 Noise

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Attention

1.2.1 Power LED (indicator) unlighted

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Please follow the numbered sequence marked within parenthesis given in individual

Flow chart, in that this is the best-recommended sequence to rectify the problems.

Problem

Analyze

and

Identify

the Causes

Solutions

Secondary wire Of

transformer is

Disconnedcted of

defective

CheckD1.2

.3.4

Check

LED

Defective power

Switch

Resolder or replace defective component（s）

Power LED （indicator）unlighted

Version: 1.0 Page 7/15

1.2.2 Does not work or one channel no sound

1.2.3 Noise

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Problem

Analyze

and

Identify the

Causes

Solutions

Does not work or

One channel no sound

Broken o

r

Short circui

t

Defective IC

(TDA2030A)

Defective

Audio cable

Replace

Audio cable

Check solde

r

Points on PCB

And resolder

defective one

(

s

)

Check and replace

Defective IC

(TDA2030A)

Problem

Analyze and

Identify the

Causes

Solutions

Noise

Defective

VR

Defective IC

(TDA2030A)

Check and replace

defective component(s)

Replace

Defective VR

Replace defective IC

(TDA2030A)

Component(s) aroun

d

IC is/are defective

Version: 1.0 Page 8/15

Satellite

No

.

DESCRIPTION

UNIT NOMINAL LIMIT

FR FL

≥19

1. FRONT OUTPUT POWER @THD 10% W 19.8 19.8

2

SENSITIVITY（1KHz）@RATED O/P

POWER

mV 640 640

±50

3 SENSITIVITY(1KHz)@1W O/P POWER mV 130 130

±20

4 MAX INPUT LEVEL@1%

THD mV 500 500

±40

5 FREQUENCY RESPONSE(1KHz=0dB)

50Hz dB -3 -3

±0.5

1K dB 0 0

±0.5

20K dB -3 -3

±0.5

6 S/N @RATED O/P POWER dB 80 80

≥60

7 CHANNEL UNBALANCE @REF O/P

POWER

dB 0.3 0.3

≤0.5

8 CHANNEL SEPARATION(ONE

CHANNEL IN; OTHER CHANNEL INPUT

SHORTING)

dB 59 59

≥45

9 HUM NOISE (VR MAX)

(VOLUME MAX; INPUT SHORTING)

mV 0.9 0.9

≤5

10 HUM NOISE (VR MIN)

(VOLUME MIN. INPUT SHORTING)

mV 0.2 0.2

≤3

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Chapter 2. Specifications

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Chapter 3. Block Diagram

Subwoofer

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Chapter 4. Exploded View

SP-HF1250A

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SATELLITE

12

11

1

9

8

6

7

5

4

3

2

10

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Chapter 4. Exploded View

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Subwoofer

Ref. No.

Description

RS Part No. Part No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

Badge, L34xW16.9xT1.8 AL

Cloth , 2104 BLACK

Frame 6.0MDF

Speaker 4''4Ω 20W

Speaker 1″8Ω15W

Wood-box, 9T MDF PVC F-517-3c

Female Button

Function PCBA , Volume

Heat sink, AL Silver

Screw BAΦ3.0x12 ,

zincification Black Color

Bracket L15*W10*T1.0

Screw M3x8 , zincification Black Color

Back Board 9.0MDF

Paper Tube IDΦ35*ODΦ39*70L

Screw BAΦ3.5x20,

zincification Black Color

Power Switch

Screw PAΦ3.0x10,

zincification Black Color

AL Board, Black Color

PCBA

Cable Fastner 4K-4

PCBA

IC ST TDA2030A

Nut whit flange M4,

zincification Black Color

Transformer,

230V 50HZ

Screw ,M4*16 zincification Black Color

Knob,HIPS Silver Color

Deco ring HIPS, black coler

Screw BAΦ3.0x12 ,

zincification Black Color

Rubber foot ,black color

Screw BAΦ3.5x16 ,

zincification Black Color

016800958

014700618

034610688

010402978

010403028

035201968

027400148

033003428

017300478

017903258

021000378

017903228

034903138

015501168

017903248

011000118

017903278

034201308

033003478

027405578

033003488

019300238

008901148

017903238

026900958

026300698

017903258

015103558

017903268

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Chapter 5. Part List

Version: 1.0 Page 13/15

Satellite

Ref. No.

Description

RS Part No. Part No.

1

2

3

4

5

6

7

8

9

10

11

12

Badge, L34xW16.9xT1.8 AL

Cloth , 2104 BLACK

Frame 6.0MDF

Speaker 4''4Ω 20W

Screw BAΦ3.0x12 ,

zincification Black Color

Speaker 1″8Ω15W

Female Button

Wood-box, 9T MDF PVC F-517-3c

Paper Tube IDΦ35*ODΦ39*70L

Back board, 9.0MDF

Rubber foot ,black color

Screw BAΦ3.5x16 ,

zincification Black Color

016800958

014700618

034610688

010402978

017903258

010403028

027400148

033901658

015501168

034903148

015103558

017903268

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Chapter 5. Part List

Version: 1.0 Page 14/15

6.1 Packing requirement for sending the PCB assembly by post

PCB assembly is a kind of sophisticated electronic circuit board. Well packing

Will be required when sending them by post.

*Some sophisticated IC components are mounted on the PCB assembly, hence

it is necessary to pack each PCB assembly with a separate static protecting bag,

in order to avoid static electricity.

*Reliable external packing is also very important when sending the PCB assembly

by post, in that it would avoid unnecessarily lost or damage.

6.2 Short of spare parts while repairing a speaker system

If you are short of spare parts when you have some spesker systems waiting to

be repaired,it would be recommended to take the necessary parts from one

Speaker system,so that you may haye the as many speaker systems

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Chapter 6. Important Notes

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Chapter 7. Schematic Diagram

R

L

R

L

R

L

R

+

-

1

2

4

U1-A

IC-TDA2030

3 5

U1-B

IC-TDA2030

R1

22K

R2

22K

R3

1K

C1

C/101

+

C2

22uF/25V

R4

1 OHM

C3

M/224

1

2

R-OUT

SPEAKER

+

-

1

2

4

U3-A

IC-TDA2030

R10

22K

R11

22K

R12

1K

C8

C/101

+

C9

22uF/25V

R13

1 OHM

C10

M/224

1

2

L-OUT

SPEAKER

1

3

RCA1-A

2

4

RCA1-B

-

+

2

3

1

U5-A

IC-4558

+

-

5

6

7

U5-B

IC-4558

4 8

U5-C

IC-4558

R23

10K

R24

30K

C18

C/101

R26

10K

R28

30K

C20

C/101

+

C17

4.7uF/25V

+

C19

4.7uF/25V

R29

10 OHM

R30

10 OHM

1

2

3

4

5

PHONE

JK/5P/PHONE

1

2

3

4

5

6

7

8

P1

R33

1K

R34

1K

R35

22K

R36

22K

3 5

U2-B

IC-TDA2030

3 5

U3-B

IC-TDA2030

3 5

U4-B

IC-TDA2030

1

2

3

VR1-A

1

2

3

4

5

6

7

8

P2

R37

4.7K

1

2

3

VR2-A

R38

2.7K

C23

M/473

C24

M/124

1

2

3

VR3-A

R39

5.6K

C25

M/222

C26

M/103

4

5

6

VR1-B

R40

4.7K

4

5

6

VR2-B

R41

2.7K

C27

M/473

C28

M/124

4

5

6

VR3-B

R42

5.6K

C29

M/222

C30

M/103

D1

IN5401

D2

IN5401

D3

IN5401

D4

IN5401

1

2

3

P3

+

C31

4700uF/25V

+

C32

4700uF/25V

C33

C/104

C34

C/104

+

C35

100uF/25V

+

C36

100uF/25V

R43

2K

R44

2K

+

C37

100uF/16V

+

C38

100uF/16V

R47

470

R48

1K

D5

5.1V

+

C39

22uF/16V

LED

C7

M/104

C14

M/104

1

2

3

4

5

6

7

8

P6

1

2

3

4

5

6

7

8

P7

1

2

RCA2

1

2

P8

D6

9.1V

D7

9.1V

+

C40

4.7uF/25V

+

C41

4.7uF/25V

-

+

2

3

1

U6-A

IC-4558

+

-

5

6

7

U6-B

IC-4558

4 8

U6-C

IC-4558

+

C15

4.7uF/25V

+

C16

4.7uF/25V

+

C21

100uF/16V

+

C22

100uF/16V

+VCC

-VCC

+VCC

Genius SP-HF1250A User manual

Genius SP-HF1250A User manual

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