KYE Systems Corp. Genius SP-S115 User manual

Service Guide SP-S115
SERVICE GUIDE
KYE SYSTEM CORP
Version 1.0 Page 1 of 19

Service Guide SP-S115
Revision History
Version Date Change
1.0 25/06/2010
Version 1.0 Page 2 of 19

Service Guide SP-S115
Revision History………………………………………………………………….2
Table of contents……………………………………………………………...…3
Getting Start…………………………………………………….………………...4
Conventions Used in this Guide…………………………………………….…4
Safety Precautions………………………………………………………………4
Chapter 1. How to Handle Defective Returns……………………………….5
1.2 Problem………………………………………………………………………6
1.2.1 No power，LED （indicator）unlighted……………………………….7
1.2.2 No sound…………………………………………………………….…….8
1.2.3 Noise………………….….……….……….……….……….……….….…9
1.2.4 LED indicators no light when working….…..….……….……….….…10
1.2.5 Volume switch no use…………………………………………….…..…11
1.2.6 Headphone jack no use……………….…………….……………….….12
Chapter 2. Specification…………………………………………………..……13
Chapter 3. Block diagram…………………………………………..………….14
Chapter 4. Exploded view………………………………………………………15
Active speaker………………………………………………………….……….15
Passive speaker………………………………………..…….…………………16
Chapter 5. Part list…………………………………… …………….…………...17
Active speaker…………………………………………………….…….…….. 17
Passive speaker……………………………………………………………...…17
Chapter 6 Important notes………………………………………………………18
Chapter 7 Schematic diagram………………………………………………….29
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Table
of Contents

Service Guide SP-S115
Getting Started
Conventions Used in the 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 handing 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.
Donotallowanythingtodrop 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.
Do not perform any maintenance with wet hand.
Preventforeignsubstance,such as water, other liquids or chemical, from entering
the speakers while performing maintenance procedures on the speakers.
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Service Guide SP-S115
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
FunctionOK
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Receiving Defective speaker from customers
Verifying problems
Proceeding
Necessary tests
Verifying problems
Proceeding
Necessary tests
Analyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Return the speakers with proper
repacking to customers

Service Guide SP-S115
1.2 Problems
Item Problem Description
1.2.1 No power，LED （indicator）unlighted
1.2.2 No sound
1.2.3 Noise
1.2.4 LED indicators no light when working
1.2.5 Volume switch no use
1.2.6 Headphone jack no use
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Service Guide SP-S115
*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.
1.2.1 No power，LED （indicator）unlighted
Problem
Analyze
and identify
the causes
Solutions
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Repair or replace
Dry-soldered secondary
wire of transformer
Defective or
damaged D1-D1
diode
resolder or replace
No power，LED （indicator）unlighted
Power switch poor
connected or defective
Repair or replace

Service Guide SP-S115
1.2.2 no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 8 of 19
PCB damaged,
dry-soldered or
short-circuited
Power supply for IC
TDA2822 abnormal or
damaged
No sound
Or VR1 damaged
Repair or replace
Repair or replace Repair, resolder or
replace

Service Guide SP-S115
1.2.3. Noise
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 9 of 19
Noise
1. Filter capacitor not work,
dry-soldered, or diode damaged
2. Or Power supply for IC
TDA2822 abnormal
3. Or PCB broken or
dry-soldered
Or Vibration from too
long lead wire of driver
units; or damaged/
short-circuited driver
units;
Or VR poor connected;
Repair Check and replace Repair or replace

Service Guide SP-S115
1.2.4. LED indicators no light when working
Problem
Analyze and
identify the
causes
Solutions
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LED indicators no li
g
ht when workin
g
1. LED1 damaged or PCB copper foil broken
2. LED1 , R7 defective or dry-soldered
Check and replace