Genius SW-S2.1350 User manual

ServiceGuide SW-S2.1 350
Version : 1.0 Page 1 of 15
SERVICE GUIDE
KYESYSTEMS CORP.
SW-S2.1 350
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 2 of 15
Version : 1.0
RevisionHistory
Version Date Change
1.0 07/18/2007
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 3 of 15
Table of Contents
Revision History …………………………………………………………………….2
Table of Contents ……………………………………………………………………3
Getting Started ………………………………………………………………………4
Conventions Used in this Guide ……………………………………….4
Safety Precautions ……………………………………………………..4
Chapter 1. How to Handle Defective Returns……………………………………..5
1.1 Overview …………………………………………………………..5
1.2 Problems …………………………………………………………...6
1.2.1 One or more channels no sound ………………..…7
1.2.2 Power LED (indicator) no light………………....…8
1.2.3 Volume no function...…………………….………..8
Chapter 2. Specifications …………………………………………………………9
Chapter 3. Block Diagram ……………………………………………………….10
Chapter 4. Exploded View …………………………………………………….11-12
Chapter 5. Part List ………………………………………………………………13
Chapter 6. Schematic Diagram …………………………………………………..14
Chapter 7. Important Notes ………………………………………………………15
7.1 Packing Requirement for Sending the PCB Assembly by Post …..15
7.2 Short of Spare Parts while Repairing a Speaker System …………15
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ServiceGuide SW-S2.1 350
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Getting Started
Conventions Used in this 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 handling 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 .
Disconnect the AC power cord from the AC outlet before performing
any maintenance on the speakers .
Do not perform any maintenance with wet hand .
Prevent foreign substances, such as water, other liquids or chemicals ,
From entering the speakers while performing maintenance procedures
on the speakers .
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 5 of 15
Chapter 1. How to Handle Defective Returns
1.1 Overview
Verifying problems
Proceeding necessary tests
Receiving Defective speakers from
Customers
Analyzing possible malfunction
causes
Deciding & proceeding the
rectification methods
Replace necessary defective parts
Proceeding tests to
Verif
y
if the s
p
eaker is
functionin
g
normall
y
Return the speakers with proper
repackaging to customers
Function NG
Function OK
Function OK
Function NG
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 6 of 15
1.2 Problems
Item Problem Description
1.2.1 Oneormorechannelsnosound
1.2.2 PowerLED(indicator)nolight
1.2.3 Volumenofunction
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ServiceGuide SW-S2.1 350
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Attention
1.2.1 One or more channels no sound
Problem
Solutions
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.
One or more channels no sound
Broken or short circuit
Defective U1, U2, U3A, U3B
Speaker cable dis-connect or
speaker damaged
Check solder points on
PCB
Check and Replace
defective IC
Re-connect speaker cable or
replace defective speaker(s)
Analyzer and
Identify the Causes
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ServiceGuide SW-S2.1 350
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1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED defective
Defective D60~D63,
VR1, Power, R60, R61
AC cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume no function
Broken or short circuit Volume: Defective VR1, VR2, R10, R20, C12,
C15, C22, C25, U1, U2, U3
Bass: Defective VR2, R30~R36, R39~R40,
C40-41, C44~C45, U1, U3
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components
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ServiceGuide SW-S2.1 350
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Chapter 2. Specifications
Woofer
NO. Description Unit Specifications
1 Out Power at THD 10% W 5±0.4
2 Sensitivity mV 130 ±50
3 Freq. Response (Ref:-3dB) Hz 55Hz ~ 380Hz
4 S/N ratio dB
≧60
5 Hum & Noise (Vol.: max) mV ≦ 10
Satellite
NO. Description Unit Specifications
1 Out Power at THD 10% W 2 ±0.2
2 Sensitivity mV 580 ±50
3 Freq. Response (Ref:-3dB) Hz 280Hz ~ 20KHz
4 Separation dB
≧50
5 S/N ratio dB
≧70
6 Hum & Noise (Vol.: max) mV ≦ 10
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 10 of 15
Chapter 3. Block Diagram
AUDIO IN Volume
Control
Power
Amplifier
R. Satellite
L. Satellite
Woofer
Woof. Volume
AC IN Transformer &
Rectifier
FILTER
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 11 of 15
Chapter 4. Exploded View
Woofer
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ServiceGuide SW-S2.1 350
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Satellite
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 13 of 15
Chapter 5. Part List
No. DESCRIPTION Qty UNIT Part No.
1 SW-S2.1 350/Body/Satellite 2 PC 16-101-01
2 Loud Speaker 5090 8 ohm 3W 2 PC 16-100-01
3 EVA Pad, SP-S110 4 PC 12-100-02
4 SW-S2.1 350/Body/Woofer-120V-US
1 PC
16-101-02
5 SW-S2.1 350/Body/Woofer-220V-AR 16-101-03
6 SW-S2.1 350/Body/Woofer-230V-EU 16-101-04
7 SW-S2.1 350/Body/Woofer-240V-UK 16-101-05
8 SW-S2.1 350/Body/Woofer-240V-AU 16-101-06
9 SW-S2.1 350/Body/Woofer-230-EU(Silver) 16-101-07
10 Loud Speaker 3” 8 ohm 5W 1 PC 16-100-02
11 Rubber Pad-woofer, SW-S2.1 350 4 PC 16-100-03
12 PCBA, SW-S2.1 350 1 PC 16-101-08
13 IC, YW4558 1 PC 11-100-04
14 IC, TEA2025B 2 PC E1065-5R
15 Transformer, 120V:9.5VAC & 1A
1 PC
E1074-101
16 Transformer, 230V:9.5VAC & 1A E1074-102
17 Transformer, 240V:9.5VAC & 1A E1074-103
18 Audio Cable, 1.5M, SW-S2.1 350 1 PC 16-100-04
19 S/N Label ( on Woofer & Gift Box ) 2 PC 16-102-01
20 Cushion, SW-S2.1 350 1 SET 16-102-02
21 Gift Box ( Black Cloth ) 1 PC
12001281100-A
22 Gift Box ( Silver Cloth ) 12001411100-A
23 Round Yellow Type Label (on Gift Box) 1 PC 16-102-03
24 Carton, SW-S2.1 350 1/4 PC 12101419100-A
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 14 of 15
Chapter 6. Schematic Diagram
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ServiceGuide SW-S2.1 350
Version : 1.0 Page 15 of 15
Chapter 7. Important Notes
7.1 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 PCB
assembly by post, in that it would avoid unnecessarily lost or damage.
7.2 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 form
one speaker system, so that you may have the as many speaker systems.
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