Genius SP-S110 User manual

Service Guide SP-S110
SERVICE GUIDE
KEY SYSTEM CORP
Version 1.0 Page 1 of 19
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Service Guide SP-S110
Revision History
Version Date Change
1.0 1/08/2007
Version 1.0 Page 2 of 19
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Service Guide SP-S110
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 Noise………………….….……….……….……….……….……….….…9
1.2.4 LED indicators no light when working….…..….……….……….….…10
1.2.5 Volume switch no use…………………………………………….…..…11
1.2.6 Headphone jack no use……………….…………….……………….….12
Chapter 2. Specification…………………………………………………..……13
Chapter 3. Block diagram…………………………………………..………….14
Chapter 4. Exploded view………………………………………………………15
Active speaker………………………………………………………….……….15
Passive speaker………………………………………..…….…………………16
Chapter 5. Part list…………………………………… …………….…………...17
Active speaker…………………………………………………….…….…….. 17
Passive speaker……………………………………………………………...…17
Chapter 6 Important notes………………………………………………………18
Chapter 7 Schematic diagram………………………………………………….29
Version 1.0 Page 3 of 19
Table
of Contents
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Service Guide SP-S110
Getting Started
Conventions Used in the Guide
Pay SpecialAttention: Instructions that are important to remember and may prevent
mistakes.
Caution:Informationthat,ifnot 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.
Version 1.0 Page 4 of 19
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Service Guide SP-S110
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
Function OK
Version 1.0 Page 5 of 19
Receiving Defective speaker from customers
Verifying problems
Proceeding
Necessary tests
Return the speakers with prope
r
repacking to customers
A
nalyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Verifying problems
Proceeding
Necessary tests
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Service Guide SP-S110
1.2Problems
Item Problem Description
1.2.1 No power，LED （indicator）unlighted
1.2.2 No sound
1.2.3 Noise
1.2.4 LED indicators no light when working
1.2.5 Volume switch no use
1.2.6 Headphone jack no use
Version 1.0 Page 6 of 19
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Service Guide SP-S110
*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 19
Dry-soldered secondary
wire of transformer
Defective o
r
damaged D1-D1
diode
Power switch poo
r
connected or defective
No power，LED （indicator）unlighted
Repair or replace
resolder or replace
Repair or replace
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Service Guide SP-S110
1.2.2 no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 8 of 19
No sound
PCB damaged,
dry-soldered or
short-circuited
Power supply for IC
TDA2822 abnormal o
r
damaged
Repair, resolder o
r
replace
Repair or replace
Repair or replace
Or VR1 damaged
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Service Guide SP-S110
1.2.3. Noise
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 9 of 19
Check and replace Repair or replace
Or VR poor connected;
Or Vibration from too
long lead wire of drive
r
units; or damaged/
short-circuited drive
r
units;
Repair
1. Filter capacitor not work,
dry-soldered, or diode damaged
2. Or Power supply for IC
TDA2822 abnormal
3. Or PCB broken o
r
dry-soldered
Noise
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Service Guide SP-S110
1.2.4. LED indicators no light when working
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 10 of 19
Check and replace
1. LED1 damaged or PCB copper foil broken
2. LED1 , R7 defective or dry-soldered
LED indicators no li
g
ht when workin
g
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Service Guide SP-S110
1.2.5. Volume switch no use
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 11 of 19
Check and replace
1. PCB dry-soldered, or broken
2. VR1 defective
Volume switch no use
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Service Guide SP-S110
1.2.6. Headphone jack no use
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 12 of 19
Head
p
hone
j
ack no use
Poor connection in PS1 JACK
Check and replace
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Service Guide SP-S110
NO. DESCRIPTION UNIT LIMIT
NOMINAL
1 W 0.45 ±5%
RATED OUTPUT POWER @TDH 10%
2 mV 380 ±20mV
SENSITIVITY (1KHZ) @RATED O/P POWER
3 mV NO ±10%
MAX INPUT LEVEL @1%TDH
4 LOW Hz 140 ±20
FREQUENCY RESPONSE (1KHZ -3dB)
HIGH KHz 60 ±5
5 S/N @RATED O/P POWER 57 ≥55
dB
6 CHANNEL UNBALANCE@REF O/P POWER dB 0.2 ≤0.5
7 CHANNEL SEPARATION (ONE CHANNEL
INPUT, OTHER CHANNEL SHORTING) 45 ≥40
dB
8 HUM NOISE @VOL MAX (VOLUME MAX,
INPUT SHORTING) mV 1.5 ≤2
9 HUM NOISE @VOL MAX (VOLUME MIN,
INPUT SHORTING) mV 0.5 ≤1
Version 1.0 Page 13 of 19
Chapter 2. Specifications
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Service Guide SP-S110
Version 1.0 Page 14 of 19
Chapter 3 Block diagram
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Service Guide SP-S110
Active speaker
Version 1.0 Page 15 of 19
Chapter 4 Exploded view
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Service Guide SP-S110
Passive speaker
Version 1.0 Page 16 of 19
Chapter 4 Exploded view
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Service Guide SP-S110
Active speaker
Ref. NO Description Part NO.
1SP-S110 cloth cover EP41010160
2screw, 3*12BA EP24010040
3driver unit, A-103, 5090 4ohm 3W EP16010007
4SP-S110 front of active speaker EP40310330
5screw, 3*8BA EP24010014
6transformer, 230V 50HZ 6V-0.2A EP13500032
7SP-S110 back of active speaker EP40510097
8screw, 3*18BA EP24010016
9screw, 3*18PA EP24100108
10 knob EP40711179
11 button EP40711180
12 PCBA EP1P110007
Passive speaker
Ref. NO Description Part NO.
1cloth cover EP41010160
2screw, 3*18BA EP24010016
3driver unit, A-103, 5090 4ohm 3W EP16010007
4front for passive speaker EP40410143
5back of passive speaker EP40610389
6screw, 3*18PA EP24100108
7screw, 3*12BA EP24010040
Version 1.0 Page 17 of 19
Cha
p
ter 5 Part list
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Service Guide SP-S110
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 18 of 19
Cha
p
ter 6. Im
p
ortant Notes
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Service Guide SP-S110
Version 1.0 Page 19of 19
Cha
p
ter 7. Schematic dia
g
ram
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