Genius SW-2.1 355 User manual

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SW-2.1 355SW-2.1 355
SERSER
VICE VICE
GUIDEGUIDE
KK
EY SYSTEM COEY SYSTEM CO
RPRP
Version Version
1.0 1.0
Page Page
1 1
of of
2020

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SW-2.1 355SW-2.1 355
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Version Date ChangeVersion Date Change
1.0 15/11/20071.0 15/11/2007
Version Version
1.0 1.0
Page Page
2 2
of of
2020

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Revis
io
n
His
to
ry
………
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….2
Ta
bl
e
of
co
nt
ent
s……………
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...…3
Ge
tti
ng
Sta
rt
…………………………………………………….………………...4
Conventions Used in this Guide…………………………………………….…4
Safety Precautions………………………………………………………………
4
Cha
pter 1. How t
o Handle Defe
cti
ve Re
tur
ns
……………………………….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
1.2.6 Woofer no sound
………………………………………………….…..…11
1.2.9 Noise………………………….……………………….……………..….
12
1.2.10 LED indicators no light……………………………………….………..
13
Chapt
er
2. Speci
fi
cat
io
n……………
………
………
………
………
……..
……14
Satellite…………………………………………………………………….…….14
Woofer……………………………………………………………………………14
Chapt
er 3. Bl
oc
k d
iag
ram
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…….1
5
Chapt
er
4. Exp
lo
ded
vi
ew…………
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……16
Subwoofer……………………………………………………………….……….16
Satellite…………………………………………………..…….…………………17
Chapt
er
5. Part
li
st
………
………
………
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…… …………
….……
……..
.18
Woofer………………………………………………………….……………….. 18
Satellite…………………………………………………………………………...18
Chapter 6 Important notes……………………………………………………….19
Chapter 7 Schematic diagram……………………………………………………20
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1.0
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3
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T
a
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Ge
tt
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tarted
Conventions
Use
d in
the Guide
Pay Spec
ial 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.
Prevent foreign substance, such as water, other liquids or chemical, from
entering
the speakers while performing maintenance procedures on the speakers.
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Cha
pt
er 1
. H
ow
to
Ha
nd
le De
fect
iv
e R
eturn
s
1.
1 Overvi
ew
Function NG
Function OK
Function NG
Function OK
Version
1.0
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Receiving Defective speaker from customers
Verifying problems
Proceeding
Necessary tests
Return the speakers with proper
repacking to customers
Analyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Verifying problems
Proceeding
Necessary tests

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1.2 Problems
Ite
m
P
robl
em
De
scrip
tion
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
Woofer
no
sound
1.2.6 Noise
1.2.7
LED
indicators
no
light
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*Attention
Please follow the numbered sequence marked within parenthesis given in
individual
Flow chat in that this is the
best-recommende
d sequence to rectify the problems.
1.2.1 No power
Problem
Analyze
and
identify
the
causes
Solutions
Version
1.0
Page
7
of
20
Defective soldering of transformer
secondary
wire
and
CON4
on
PCB
board
No power
，
LED
（
indicator
）
unlighted
Repair or replace
resolder or replace
Repair or replace
Defective or
damaged AC cable,
or power switch
Defective
transformer
LED indicator
unlighted

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1.
2.
2 no s
ou
nd
Problem
Analyze and
identify the
causes
]
Solutions
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8
of
20
No
so
un
d
Input cable
damaged or
defective
8P assembled line
defectively
connected between
CON1 and CON2
PCB
short-circuited, dry
soldered or
damaged
Repair
,
resolder
or
replace
Repair or replace
Repair or replace
Repair or replace
Defective
components
of VR1, JK1,
U1, U2,

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1.
2.
3
Right
channel
no
sou
nd
Problem
Analyze and
identify the
causes
Solutions
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Input cable
damaged or
defective
Right Speaker
cable damaged or
defective
Right driver unit
dry-soldered o
r
defective
1. Defective JK1, JK2
2. Defective assembled line
between CON1 and CON2
3. Defective or dry-soldered
R8
，
R1
，
C1
，
R19
，
C3
，
C10
，
U1
，
or VR1
Replace or
replace
Replace or
replace
Re-connect ,
replace or repair
PCB damaged,
dry-soldered or
short-circuited
short-circuited
Repair or
replace
Right channel no sound

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1.
2.
4 Left chann
el
no so
un
d
Problem
Analyze and
identify the
causes
Solutions
Version
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Input cable
damaged or
defective
Left Speaker cable
damaged or
defective
Left driver unit
dry-soldered or
defective
1. Defective JK1, JK2
2. Defective assembled line
between CON1 and CON2
3. Defective or dry-soldered
R7
，
R2
，
C2
，
R20
，
C4
，
C11
，
U1
，
VR1
Repair or
replace
Repair or
replace
Re-connect,
replace or repair
PCB damaged,
dry-soldered or
short-circuited
short-circuited
Repair or
replace
Left channel no sound