KYE Systems Corp. Genius SP-E120 User manual

ServiceGuide SP-E120
Version : 1.0 Page 1 of 15
SERVICE GUIDE
KYESYSTEMS CORP.
SP-E120

ServiceGuide SP-E120
Version : 1.0 Page 2 of 15
Version : 1.0
RevisionHistory
Version Date Change
1.0 15/05/2008

ServiceGuide SP-E120
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Table of Contents
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 Overview …………………………………………………………..5
1.2 Problems …………………………………………………………...6
1.2.1 One or more channels no sound ………………..…7
1.2.2 Power LED (indicator) no light………………....…8
1.2.3 Volume no function...…………………….………..8
Chapter 2. Specifications …………………………………………………………9
Chapter 3. Block Diagram ……………………………………………………….10
Chapter 4. Exploded View ………………………………………………….11 ~ 12
Chapter 5. Part List ………………………………………………………………13
Chapter 6. Schematic Diagram …………………………………………………..14
Chapter 7. Important Notes ………………………………………………………15
7.1 Packing Requirement for Sending the PCB Assembly by Post …..15
7.2 Short of Spare Parts while Repairing a Speaker System …………15

ServiceGuide SP-E120
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Getting Started
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 .

ServiceGuide SP-E120
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Chapter 1. How to Handle Defective Returns
1.1 Overview
Verifying problems
Proceeding necessary tests
Receiving Defective speakers from
Customers
Analyzing possible malfunction
causes
Deciding & proceeding the
rectification methods
Replace necessary defective parts
Proceeding tests to
Verif
y
if the s
p
eaker is
functionin
g
normall
y
Return the speakers with p
roper
repackaging to customers
Function NG
Function OK
Function OK
Function NG

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1.2 Problems
Item Problem Description
1.2.1 Oneormorechannelsnosound
1.2.2 PowerLED(indicator)nolight
1.2.3 Volumenofunction

ServiceGuide SP-E120
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Attention
1.2.1 One or more channels no sound
Problem
Solutions
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.
One or more channels no sound
Broken or short circuit Defective U1 Speaker cable
dis-connect or speaker
damaged
Check solder points on
PCB
Check and Replace
defective IC
Re-connect speaker
cable or replace
defective speaker(s)
Analyzer and
Identify the Causes

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1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED
defective
Defective
D1~D4,R11,C16,C17
Ac cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume no function
Broken or short circuit DefectiveU1,VR1
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components

ServiceGuide SP-E120
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Chapter 2. Specifications
NO. Description Unit Specifications
1 Out Power at THD 10% W ≧1
2 Sensitivity V 310 ±50
3 Freq. Response (Top -3dB) Hz 38~20K
4 Separation dB ≧50
5 S/N ratio dB ≧70
6 Hum & Noise (Vol.: max) mV ≦ 2

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Chapter 3. Block Diagram
AUDIO IN
Volume
Increase
Power
Amplifier
R.CH Speaker
AC IN
L.CH Speaker
Volume
Decrease
Power
Conditioner

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Chapter 4. Exploded View
Host

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Satellite

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Chapter 5. Part List
No. DESCRIPTION Qty UNIT Part No.
1 SP-E120/Body-230V-EU 1 PC 22-101-01
2 Loud Speaker 3” 4ohm 3W 2 PC E1049-31
3 Rubber Pad, SP-E120 4 PC 22-100-01
4 PCBA, SP-E120 1 PC 22-101-02
5 IC, TEA2025B 1 PC E1065-5R
6 Transformer, 230V:9VAC & 0.3A 1 PC E1074-7CR
7 S/N Label ( on Host & Gift Box ) 2 PC 22-102-01
8 Gift Box, SP-E120 1 PC 12001019100-C
9 Round Yellow Type Label ( on Gift Box ) 1 PC 22-102-02
10 Carton, SP-E120 1/10 PC 12101100100-A

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Chapter 6. Schematic Diagram
12 43
A
B
C D
4
3
2
1
D
C
B
A
R3 10K
R7 15K
R12 150R
R5 4.7K
R10 4.7K
R8 10K
R2 15K
R9 12K
R13 150R
R4 12K
R6 8.2K
R1 8.2K
LED1
C1 2A102J
C3 2A102J
14
15
3
2
5
16
10 11
1
7
6
8
4
9
12
13
U1
(ST)TEA2025B
C13
100uF/16V
C5 0.22uF/50V
C2 0.22uF/50V
C12
100uF/16V
C11
100uF/16V
C7 100uF/16V
C6 100uF/16V
C9 1000uF/10V
C8 1000uF/10V
R11 1K
VCC
C16
1000uF/16V
C17
104P/100V
VCC
D1 IN4001 D3
IN4001
D2 IN4001
D4 IN4001
Checked Approved
DateRevision
Size
Page
Deviser
Title NO.
SP-E120
R1.1 2008.02.02
1
2 3
INPUT1
VR1A
B50K
VR1B B50K
L-OUT1 SPEAKER
R-OUT1 SPEAKER
PHONE1
C4 Short
C10 Short
AC-IN
9V/0.3A
SW1 POWER
C14
0.22uF/50V
C15
0.22uF/50V

ServiceGuide SP-E120
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Chapter 7. Important Notes
7.1 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 PCB
assembly by post, in that it would avoid unnecessarily lost or damage.
7.2 Short of Spare Parts while Repairing a Speaker System
If you are short of spare parts when you have some speaker systems waiting
to be repaired, it would be recommended to take the necessary parts form
one speaker system, so that you may have the as many speaker systems.