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Genius KYE Systems SP-HF1250X Service Manual

Made by: Genius KYE Systems
Type: Service Guide
Category: Speakers
Pages: 16
Size: 0.57 MB

 

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Version:1.0

Total 14 Pages (Cover Page included)

 


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Version Date 

Changes 

1

.0 

Official Release 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                                                                                                                                 

 

 

 

 

 

 

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Revision History 

 


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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) Unlight…………………...……………......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 

Chapter5.  Part List…………………………………………………………………….11 

Chapter6.  Important Notes…………………………………………………………....12 

6.1 Packing Requirement for sending the PCB Assembly by post……….…12 

6.2 Short of Spare Parts while Repairing a Speaker System…………….….12 

Chapter7. Circuit Schematic……………………………………………………………13 

 

   

 

 

 

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Table of Contents 

 


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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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Getting Started 

 

Attention

 

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

 


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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 

Proper repackaging to customers

Functioning NG 

Functioning OK 

Functioning NG 

 


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1.2 Problems 

 

  Item                                                              Problem descriptions 

 

1.2.1                                            Power LED (indicator) unlight 

 

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) unlight    

               

 

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Please follow the numbered sequence marked withing 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

 

Power LED (indicator) unlight 

Diode D1.2.5.6

burnt

 

Defective power

Switch or LED

Secondary wire 

Of transformer is 

Disconnected or 

defective

 

Resolder or replace defective component(s) 

 

 


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      1.2.2    Does not work jor jone 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 or

Short circuit

 

Defective IC

Defective 

Audio cable

 

Replace 

Audio cable

 

Check solder

Points on PCB 

And resolder 

defective one(s)

 

Check and replace

Defective IC

 

 

 
Problem 
 
 
 
 
 
Analyze and 
Identify the 
Causes 
 
 
 
 
Solutions

 

Noise 

 

 

Defective VR

Defective IC

Check and replace

defective component(s)

 

Replace 

Defective VR

 

Replace defective IC

Component(s) around

IC is/are defective

 

 


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No. DESCRIPTION 

UNIT NOMINAL 

LIMIT

INPUT SENSITIVITY AT 10% 

mV 

340 

340+/-50

DISTORTION AT 1 KHz 

0.15 

<0.5 

OUTPUT POWER AT 10% DISTORTION 

18 

18+/-1 

4 S/N 

RATIO 

dB 

74 

>60 

5 CHANNEL 

SEPARATION 

dB 

49 

>40 

6 FREQUENCY 

RESPONSE 

      (DOWN 3dB)                                      (LOW)

                                                                  (HIGH)

 

Hz 

KHz 

 

20 

20 

 

+/-10% 

+/-10% 

HUM LEVEL (AT VOL. MIN.) 

HUM LEVEL (AT VOL. MAX.) 

mV 

mV 

2.5 

<3 

<5 

OPERATING VOLTAGE    MAX.253VAC 

                                                  MIN. 207VAC 

 

 

 

 TEST 

CONDITION: 

 

 

 

 

1) LOAD 4

Ω 

 

 

 

 

2

)RATED POWER 1 W 

 

 

 

 

   VOLUME AT MAX. 

 

 

 

 

 

 

 

 

 

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Chapter 2.  Specifications

 


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Chapter 3.  Block Diagram

R.IN

 

L.IN

 

R.OUT

 

L.OUT

 

R.CH 

SPEAKER

 

L.CH 

SPEAKER

 

POWER 

AMPLIFI

E

R

 

VOLUME 

CONTROL

 

AC IN 

TRANSFORMER 

POWER SWITCH 

FIL

T

E

R

 

AUDIO INPUT 

 


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Chapter 4.  Exploded View

 


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Ref. No. 

Description 

RS Part No. 

Mfr’s Part No. 

10 

11 

12 

13 

14 

15 

16 

17 

AC Cord, 5.9’,Black Color 250V/2.5A 2PIN,CE 
Output Panel, SP-HF1250X, Black Color 
RCA, Yellow Color 
Input Panel, SP-HF1250X, Black Color 
Rear board, SP-HF1250X, Black Color 9T MDF 
Transformer, 230V, 8V/250mA 
Function PCB Assembly, SP-HF1250X, 94V0 
Wrap board(L) SP-HF1250X, 12T MDF 

Speaker, 1” 4

Ω,15W 

Speaker, 5.25” 4

Ω, 20W, Magnetically Shielded 

Screw, HSA3.5x16mm, Black 
Cloth frame(L), SP-HF1250X, Black Color 
Badge, SP-HF1250X, Silver Color ABS 
Knob, SP-HP1250X, Silver Color HIPS 
Button, SP-HF1250X, Silver Color HIPS 
Control PCB Assembly, SP-HF1250X, 94V0 
Screw, PWPA2.6x10mm, Black 
Rubber Foot One side tape glue 
Screw, PPB 3x8mm, Black 
Nut M4, Black Color 
Screw, BPA 3.5x20mm, Black 
Screw, PWPB M4x16mm, Black 
Screw, BPA 3x12mm, Black 
Screw, BPA 3x10mm, Black 
Cloth frame(R), SP-HF1250X, HIPS Black Color 
Wrap board(R),SP-HF1250X, 12T MDF 
Terminal board, SP-HF1250X, Black Color HIPS 

 

17U2115125100-0

0114HIPS00007-0

2021184084101-0

0114HIPS00021-0

1003040910200-0

2225400020001-0

180103594V001-0

9401040012500-0

0820150401312-0

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Chapter 5.  Part List 

 


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18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

084020045A112-0

4102H35016A06-0

9101086078093-0

01070ABS03001-

01 

0107HIPS00001-0

0107HIPS81001-0

180303594V001-0

4102N26010A02-0

4311020050010-0

4101P30008B02-0

4107300402020-0

 


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4102B35020A02-0

4101N40060B02-0

4102B30012A02G

01 

4102B30010A02-0

9101086078105-0

9401030011760-0

0114HIPS00017-0

 


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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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SP-HF1250X 

Chapter 7.    Circuit schematic