KYE Systems Corp. Genius SW-J2.1 500 User manual

Service Guide SW-J2.1 500
SERVICE GUIDE
KEY SYSTEM CORP
Version 1.0 Page 1 of 23

Service Guide SW-J2.1 500
Revision History
Version Date Change
1.0 06/08/2009
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Service Guide SW-J2.1 500
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 or left channel no sound….……….……….……….……..….……9
1.2.4 Woofer no sound….……….……….……….………….….……….……10
1.2.5 Noise………………………………….…………………………….…..…11
1.2.6 LED indicators no light…………………………….….……………..….12
1.2.7 Headphone jack output no sound……………………………..………..13
1.2.8 VR, headphone jack or line-in jack abnormal……..………….………..14
Chapter 2. Specification…………………………………………………….……15
Satellite…………………………………………………………………….……15
Woofer……………………………………………………………………………15
Chapter 3. Block diagram…………………………………………..…………..16
Chapter 4. Exploded view………………………………………………………17
Subwoofer……………………………………………………………….……….17
Right Satellite…………………………………………………..…….…………………18
Left Satellite…………………………………………………………………….19
Chapter 5. Part list…………………………………… …………….…………...20
Woofer………………………………………………………….……………….. 20
Right Satellite…………………………………………………………………...21
Left Satellite………..………………………………………………………….…..21
Chapter 6 Important notes……………………………………………………….22
Chapter 7 Schematic diagram……………………………………..……………23
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Table of Contents

Service Guide SW-J2.1 500
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 SW-J2.1 500
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
Verifying problems
Proceeding
Necessary tests

Service Guide SW-J2.1 500
1.2 Problems
Item Problem Description
1.2.1 No power，LED （indicator）no light
1.2.2 No sound
1.2.3 Right or left channel no sound
1.2.4 Woofer no sound
1.2.5 Noise
1.2.6 LEDindicatornolight
1.2.7 Headphone jack output no sound
1.2.8 VR, headphone jack or line-in jack abnormal
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Service Guide SW-J2.1 500
*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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No power，LED （indicator）unlighted
Repair or replace
Defective transformer
Defective or damaged
AC cable or power
switch
resolder or replace
Or caused by the following:
1. Transformer secondary wire loosely connected with PT1
jack in J2.1 500 AMP.
2. Copper foil of J2.1 500 AMP PCB broken

Service Guide SW-J2.1 500
1.2.2 No sound
Problem
Analyze and
identify the
causes
]
Solutions
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No sound
PCB
short-circuited, dry
soldered or
broken;
JK1 in J2.1 500 AMP and JK3
in J2.1 500 CON is not
properly connected
Repair or replace
Repair or replace
Or caused by the following defective
components
1. IC1, IC2 in J2.1 500 AMP PCB
2. VR1，JK2，JK4 in J2.1 500 CON
PCB
Repair, resolder or
replace

Service Guide SW-J2.1 500
1.2.3 Right or left channel no sound
Problem
Analyze and
identify the
causes
Solutions
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Replace or
replace
Re-connect ,
replace or repair
Repair or
replace
1. VR，JK2 or JK4 defective in J2.1 500
CON PCB
2. Or caused by the following defective
components :
R4,R11,MC2,MC5,R8,R10,CC2,CC1,R5R8,M
C3,MC4,EC7, EC6,EC20,EC19,IC1,IC2,SP2.
Driver unit or speaker
cable defective or
loosely connected
Audio cable defective
or loosely connected
PCB damaged, dry-soldered
or short-circuited;
JK1 in J2.1 500 AMP and JK3
in J2.1 500 CON is loosely
connected
Right or left channel no sound

Service Guide SW-J2.1 500
1.2.4 Woofer no sound
Problem
Analyze and
identify the
causes
Solution
-
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PCB damaged,
dry-soldered or
short-circuited
VR2 in J2.1 500 AMP PCB
defective
Repair or replace Repair or replace
Woofer driver unit
/Speaker cable of J2.1
500AMP PCB SP3
dry-soldered or defective
Repair or replace
Woofer no sound