Full Text Searchable PDF User Manual
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Version:1.0
Total 16 Pages (Cover Page included)
Version: 1.0 Page 1/15
Version Date
Changes
1
．
0
Official Release
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Revision History
Version: 1.0 Page 2/15
Revision History
……………………………………………………………………..1
Table of Contents………………………………………………… ………….2
Getting Started………………………………………………… ……….……………....3
Conventions Used in this Guide………………… ………...……………….3
Safety Precautions……………………………… ………………...………..3
Chapter1. How to Handle Defective Returns………………… ……………………….4
1.1 Overview……………………………………………………………….4
1.2 Problems………………………………………………………………..5
1.2.1 Power LED (indicator) Unlighted………………...……………......6
1.2.2 Does not work or one channel no sound……………………….…..7
1.2.3 Noise……………………………………………………………….7
Chapter2. Specifications………………………………………………………………..8
Chapter3. Block Diagram……………………………………………………………....9
Chapter4. Exploded View…………………………………………………………….…10-11
Chapter5. Part List……………………………………………………………………..12-13
Chapter6. Important Notes…………………………………………………………....14
6.1 Packing Requirement for sending the PCB Assembly by post……….…14
6.2 Short of Spare Parts while Repairing a Speaker System…………….….14
Chapter7. Circuit Schematic……………………………………………………………15
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Table of Contents
Version: 1.0 Page 3/15
Conventions Used in this Guide
Pay Special Attention: Instructions that are important to
remember and may prevent mistakes.
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 substance, such as water, other liquids or chemicals, from entering the speakers
while performing maintenance procedures on the speakers.
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Getting Started
Attention
Caution: Information that, if not followed, may result in
damage to the product.
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1.1 Overview
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Chapter 1. How to Handle Defective Returns
Receiving Defective
Speakers
from Customers
Verifying problems&
Proceeding necessary tests
Analyzing possible
Malfunction causes
Deciding & proceeding
the rectification methods
Replacing necessary
Defective parts
Proceeding tests
To verify if the speaker is
functioning normally
Functioning OK
Return the speakers with
Proper repackaging to customers
Functioning NG
Functioning OK
Functioning NG
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1.2 Problems
Item Problem descriptions
1.2.1 Power LED (indicator) unlighted
1.2.2 Does not work or one channel no sound
1.2.3 Noise
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Attention
1.2.1 Power LED (indicator) unlighted
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Please follow the numbered sequence marked within parenthesis given in individual
Flow chart, in that this is the best-recommended sequence to rectify the problems.
Problem
Analyze
and
Identify
the Causes
Solutions
Secondary wire Of
transformer is
Disconnedcted of
defective
CheckD1.2
.5.6
Check
LED D7
Defective power
Switch SW1
Resolder or replace defective component
（
s
）
Power LED
（
indicator
）
unlighted
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1.2.2 Does not work or one channel no sound
1.2.3 Noise
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Problem
Analyze and
Identify the
Causes
Solutions
Does not work or
One channel no sound
Broken or
Short circuit
Defective IC
U1.2.3.4
Defective
Audio cable
Replace
Audio cable
Check solder
Points on PCB
And resolder
defective one(s)
Check and replace
Defective IC
Problem
Analyze and
Identify the
Causes
Solutions
Noise
Defective VR
Volume.treble .bas
s
Defective IC
U1.2.3.4
Check and replace
defective component(s)
Replace
Defective VR
Replace defective IC
Component(s) around
IC is/are defective
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Satellite
No
.
DESCRIPTION
UNIT
NOMINAL LIMIT
FR
FL
1.
FRONT OUTPUT POWER @THD 10%
W
33
33
≥
30
2
SENSITIVITY
（
1KHz
）
@RATED O/P
POWER
mV 320
320
±
50
3 SENSITIVITY(1KHz)@1W
O/P POWER
mV
50
50
±
15
4 MAX
INPUT
LEVEL@1%
THD
mV
250
50
±
40
5 FREQUENCY
RESPONSE(1KHz=0dB)
40Hz
dB
-3
-3
±
0.5
1K
dB
0
0
±
0.5
20K
dB
-3
-3
±
0.5
6
S/N @RATED O/P POWER
dB
65
65
≥
60
7
CHANNEL UNBALANCE @REF O/P
POWER
dB 0.3 0.3
≤
0.5
8 CHANNEL
SEPARATION(ONE
CHANNEL IN; OTHER CHANNEL INPUT
SHORTING)
dB 45 45
≥
40
9
HUM NOISE (VR MAX)
(VOLUME MAX; INPUT SHORTING)
mV 5 5
≤
10
10
HUM NOISE (VR MIN)
(VOLUME MIN. INPUT SHORTING)
mV 3 3
≤
5
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Chapter 2. Specifications
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Chapter 3. Block Diagram
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Subwoofer
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
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Chapter 4. Exploded View
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SATELLITE
6
7
8
5
4
3
2
1
10
9
11
12
13
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Chapter 4. Exploded View
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Subwoofer
Ref. No.
Description
RS Part No.
Part No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Fram, Pantone432C HIPS
Screw hexagon 1, nickel-plate
Speaker deck,
spray-paint Pantone877C
Screw BA3.5*16 Black Colo
Speaker 5.25" 4
Ω
30W
Screw hexagon 2,
zincification Black Color
Speake 3" 4
Ω
20W
Wood-box, black Color, 9T MDF
Nut M4
Transformer,
230V 50HZ O/P:15VACx2/2.0A
Back Board, Black Color
Screw M4*16
Screw BA
Φ
3.5x20 ,
zincification Black Color
Screw BA
Φ
3.0x12 ,
zincification Black Color
Output Board, Black HIPS
Buckle, Black PA
Input Board, Black HIPS
RCA ,
Heat sink, AL Silver
Output PCBA,
IC TDA 2050AV
Function PCBA , Volume
IC MC4558
Rubber Foot, Black
Power Switch, 2PIN
Panel , Silver Color, Black Silk-screen
Knob Silver Color
Key press, Silver Colo
9101087154050G01
4102H35010A06G01
0108HIPS81020G01
4109B35016A02G01
084030045A112G01
4102H30012A02G02
0820200403312G01
9411040012020G01
4107300402020G01
2225400020001G04
1003040910230G01
4101N40060B02G01
4102B35020A02G01
4102B30012A02G01
0114HIPS00007G01
011600PA00003G01
0114HIPS00021G01
2022183084201G02
0405010601150G01
180103594V001G03
2100TDA2050CHG01
180304594V001G01
21100MC4558CHG01
4311020050010G01
241A220050001G03
01020ABS87025G01
01070ABS81002G03
01070ABS81001G14
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Chapter 5. Part List
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Satellite
Ref. No.
Description
RS Part No.
Part No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Fram, Pantone432C HIPS
Screw hexagon 1, nickel-plate
Speaker deck,
spray-paint Pantone877C
Screw BA3.5*16 Black Colo
Speaker 5.25" 4
Ω
30W
Screw hexagon 2,
zincification Black Color
Speake 3" 4
Ω
20W
Wood-box, black Color, 9T MDF
Screw BA
Φ
3.0x12 ,
zincification Black Color
Input board, Black HIPS
RCA ,
Monotrematous Yellow
Rubber Foot, Black
Panel , Silver Color, Black Silk-screen
9101087154050G01
4102H35010A06G01
0108HIPS81020G01
4109B35016A02G01
084030045A112G01
4102H30012A02G02
0820200403312G01
9411040012020G02
4102B30012A02G01
0114HIPS00017G01
2021184084101G01
01070ABS81001G1
01020ABS87025G02
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Chapter 5. Part List
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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 spesker systems waiting to
be repaired,it would be recommended to take the necessary parts from one
Speaker system,so that you may haye the as many speaker systems
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Chapter 6. Important Notes
Version: 1.0 Page 15/15
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Chapter 7.
Schematic Diagram