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.
Version 1.0 Page 4 of 21

Service Guide SP-J200
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
FunctionOK
Version 1.0 Page 5 of 21
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
Version1.0 Page6of21

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
Version 1.0 Page 7 of 21
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

Service Guide SP-J200
1.2.5 No effect when rotating VR
Problem
Analyze and
identify the
causes
Solutions
-
Version 1.0 Page 11 of 21
No effect when rotatin
g
VR
1.VR-related copper foil
broken/dry-soldered or not If defective, the following components
may cause VR to be no use: MC3，R9，
R1，R2，MC2，R7，R3，R4，MC4，
R10, MC1，R8
Repair or replace Repair or replace
1. VR1/VR2 in PCB defective or not

Service Guide SP-J200
1.2.6. Noise
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 12 of 21
Hum noise
1. D1，D2，D3，D4，EC25
dry-soldered or defective
2. power supply for IC1 normal
or not
3. PCB broken or dry-soldered
Repair Repair or replace
1. Or caused by the vibration from
too long lead wire of driver units
2. Driver units damaged
General noise
Noise

Service Guide SP-J200
1.2.7. LED indicators no light
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 13 of 21
2. R19 or LED defective or dry-soldered
Check and replace
1. Defective, dry-soldered, or broken PCB
LED indicators no li
g
ht

Service Guide SP-J200
1.2.7. Input jack no use
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 14 of 21
2. JK1-related cooper foil broken or dry-soldered
Check and replace or
re-solder
1. JK1 IN PCB defective or damaged
In
p
ut
j
ack no use

Service Guide SP-J200
Normal
NO DESCRIPTION UNIT
R L
LIMIT
1 RATED OUTPUT POWER @THD 10% W 2.7 2.6 ≧2.5
2 SENSITIVITY (1KHz) @RATED O/P POWER m V 500 500 500±50
3 SENSITIVITY (1KHz) @1W O/P POWER m V 260 260 260±26
400 400±404 MAX INPUT LEVEL@1% THD m V 400
DISTOPTION@1kHz 1W OUT % 0.25 0.2 ≦0.5
6 FREQUENCY RESPONSE(1KHz -3DB ) LOW Hz 20 20 20±10
7 FREQUENCY RESPONSE(1KHz -3DB ) HI KHz 70 70 70±20
8 S/N@RATED O/P POWER d B 76 77 ≧70
9 CHANNEL UNBALANCE @REF O/P POWER d B 0.5 0.5 ≦1
10
CHANNEL SEPARATION(ONE
CHANNELIN;OTHER CHANNEL INPUT
SHORTING
d B 63 61 ≧40
11 HUM NOISE (VOLUME MAX;INPUT
SHORTING) m V 0.5 0.6 ≦2
12 HUM NOISE (VOLUME MIN INPUT SHORTING) m V 0.25 0.3 ≦1
Version 1.0 Page 15 of 21
Chapter 2. Specifications

Service Guide SP-J200
Version 1.0 Page 16 of 21
Chapter 3 Block diagram

Service Guide SP-J200
Right speaker
Version 1.0 Page 17 of 21
Chapter 4 Exploded view

Service Guide SP-J200
Left speaker
Version 1.0 Page 18 of 21
Chapter 4 Exploded view

Service Guide SP-J200
Right speaker
Ref.
NO Description Part NO.
1 cloth cover EP41010166
2 screw, 3*8BA EP24010041
3 driver unit, 2" 4Ω3W EP16020061
4 screw, 3*12PA EP24100036
5 front panel, hi-glossy, black EP40310338
transparent LED cover EP41610019
6
AL heat sink, 23.5*19*0.5MM EP23010060
7
screw,3*10BA EP24010079
8
TEA2025B, IC EP1C010200
9
PCBA, 193.5*93*1.6MM/3 EP15000039
10
jack, AST-404, black EP1A090042
11
jack, J3518-500, black EP1A090012
12
13 back cover EP40510101
14 VR, 1230KGS-B10K-L12 EP1B010081
15 VR, RW1660GOJH-B50K-L12 EP1B010080
16 knob, silver EP40714186A
screw, 3*10PWA
17 EP24120002
rubber foot mat
18 EP73060055
Left speaker
Ref.
NO Description Part NO.
1 cloth cover EP41010166
2 screw, 3*8BA EP24010041
3 driver unit, 2" 4Ω3W EP16020061
4 screw, 3*12PA EP24100036
5 front panel, hi-glossy, black EP40410148
screw,3*12PWA EP24120072
6
7 transformer, 120V 60HZ/10.5V-0.5A EP13300027
screw, 3*10PWA
8 EP24120002
backcover EP40610393
9
rubber foot mat
10 EP73060055
Version 1.0 Page 19 of 21
Cha
p
ter 5 Part list

Service Guide SP-J200
6.1 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
the PCB assembly by post, in that it would avoid unnecessarily
lost or damage.
6.2 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 from one
Speaker system, so that you may have the as many speaker
systems
Version 1.0 Page 20 of 21
Cha
p
ter 6. Im
p
ortant Notes