KYE Systems Corp. Genius SP-J200 User manual

Service Guide SP-J200
SERVICE GUIDE
KYE SYSTEM CORP
Version 1.0 Page 1 of 21

Service Guide SP-J200
Revision History
Version Date Change
1.0 12/12/2008
Version 1.0 Page 2 of 21

Service Guide SP-J200
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 Right channel no sound….……….……….……….……….……….……9
1.2.4 Left channel no sound….……….……….……….……….……….……10
1.2.5 VR no use……..………………………………………………………..…11
1.2.6 Noise………………………….……………………….……………...….12
1.2.7 LED indicators no light……………………………………….……..…..13
1.2.8 Input jack no use……..……………………………………….……..…..14
Chapter 2. Specification…………………………………………………..……15
Chapter 3. Block diagram…………………………………………..………….16
Chapter 4. Exploded view………………………………………………………17
Right speaker……………………………………………………………….….17
Left speaker…………………………..………………..…….…………………18
Chapter 5. Part list…………………………………… …………….…………...19
Right speaker………………………………………………….……………….. 19
Left speaker……………………………………………………………………...19
Chapter 6 Important notes……………………………………………………….20
Chapter 7 Schematic diagram……………………………………………………21
Version 1.0 Page 3 of 21
Table of Contents

Service Guide SP-J200
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.
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.
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-J200
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
Return the speakers with proper
repacking to customers
Verifying problems
Proceeding
Necessary tests
Analyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Proceeding
Necessary tests
Verifying problems

Service Guide SP-J200
1.2 Problems
Item Problem Description
1.2.1 No power，LED （indicator）no light
1.2.2 No sound
1.2.3 Right channel no sound
1.2.4 Left channel no sound
1.2.5 No effect when rotating VR
1.2.6 Noise
1.2.7 LEDindicatorsnolight
1.2.8 Input jack no use
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Service Guide SP-J200
*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
Defective
transformer
1.Defective AC cable
No power，LED （indicator）unlighted
2. Loose connection between
AC cable and primary wire of
the transformer
3. Loose connection between
transformer secondary wire and
PT1 on PCB
resolder or replace
2. defective VR1 in PCB
Repair or replace
1. PCB Copper foil broken

Service Guide SP-J200
1.2.2 no sound
Problem
Analyze and
identify the
causes
]
Solutions
Version 1.0 Page 8 of 21
No sound
PCB broken, dry-soldered, or
short-circuited
Repair or replace
Input cable connected
well or not
Repair, resolder or
replace
Power supply for IC1 normal
or not;
EC11, IC1, VR1 defective,
dry-soldered or
Repair or replace

Service Guide SP-J200
1.2.3 Right channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 9 of 21
Input cable, or
input jack
damaged or
defective
Right Speaker
cable damaged or
defective
Right driver unit
dry-soldered or
defective
1. Defective IC1 IN PCB
2. Defective VR1,VR2 in PCB
3. PCB damaged, dry-soldered or
short-circuited
Replace or
replace
Re-connect ,
replace or repair
Replace or
replace
Right channel no sound

Service Guide SP-J200
1.2.4 Left channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 10 of 21
Input cable, or
input jack
damaged or
defective
Left Speaker cable
damaged or defective
Left driver unit
dry-soldered or defective
Repair or
replace
2. Defective VR1,VR2 in PCB
3. PCB damaged, dry-soldered or
short-circuited
1. Defective IC1 IN PCB
Re-connect,
replace or repair
Repair or
replace
Left channel no sound