KYE Systems Corp. Genius SP-S100 User manual

Service Guide SP-S100
SERVICE GUIDE
KEY SYSTEM CORP
Version 1.0 Page 1 of 19

Service Guide SP-S100
Revision History
Version Date Change
1.0 04/08/2007
Version 1.0 Page 2 of 19

Service Guide SP-S100
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-S100
Getting Started
Conventions Used in the Guide
Pay Special Attention: Instructions that are important to remember and may prevent
mistakes.
Caution:Informationthat,ifnot 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-S100
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
Function OK
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Receiving Defective speaker from customers
Verifying problems
Proceeding
Necessary tests
Return the speakers with prope
r
repacking to customers
A
nalyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Verifying problems
Proceeding
Necessary tests

Service Guide SP-S100
1.2Problems
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-S100
*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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Dry-soldered secondary
wire of transformer
Defective o
r
damaged D1-D1
diode
Power switch poo
r
connected or defective
No power，LED （indicator）unlighted
Repair or replace
resolder or replace
Repair or replace

Service Guide SP-S100
1.2.2 no sound
Problem
Analyze and
identify the
causes
Solutions
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No sound
PCB damaged,
dry-soldered or
short-circuited
Power supply for IC
TDA2822 abnormal o
r
damaged
Repair, resolder o
r
replace
Repair or replace
Repair or replace
Or VR1 damaged

Service Guide SP-S100
1.2.3. Noise
Problem
Analyze and
identify the
causes
Solutions
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Check and replace Repair or replace
Or VR poor connected;
Or Vibration from too
long lead wire of drive
r
units; or damaged/
short-circuited drive
r
units;
Repair
1. Filter capacitor not work,
dry-soldered, or diode damaged
2. Or Power supply for IC
TDA2822 abnormal
3. Or PCB broken o
r
dry-soldered
Noise

Service Guide SP-S100
1.2.4. LED indicators no light when working
Problem
Analyze and
identify the
causes
Solutions
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Check and replace
1. LED1 damaged or PCB copper foil broken
2. LED1 , R7 defective or dry-soldered
LED indicators no li
g
ht when workin
g