KYE Systems Corp. Genius SP-I250G User manual

Service Guide Model No : SP-I250G
SERVICE GUIDE
KYESYSTEMS CORP.
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Service Guide Model No : SP-I250G
Revision History
Version Date Change
1.0 22/09/2011 First Release
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Service Guide Model No : SP-I250G
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 Speaker no sound
1.2 LED no light
1.3 Power/Volume Knob no function
Chapter 2. Specifications ………………………………………………………….10
Chapter 3. Block Diagram ……………………………………………………….11
Chapter 4. Exploded View …………………………………………………12 & 13
Chapter 5. Part List ………………………………………………………………14
Chapter 6. Schematic Diagram …………………………………………………..15
Chapter 7. Important Notes ………………………………………………………16
7.1 Packing Requirement for Sending the PCB Assembly by Post …..16
7.2 Short of Spare Parts while Repairing a Speaker System …………16
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Service Guide Model No : SP-I250G
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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Service Guide Model No : SP-I250G
Chapter 1. How to Handle Defective Returns
Overview
Receiving Defective speakers from
Customers
Function NG
__ __
Analyzing possible malfunction
causes
Function NG Deciding & proceeding the
rectification methods
Function OK
Replace necessary defective parts
Function OK
Return the speakers with proper
repackaging to customers
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Service Guide Model No : SP-I250G
Problems
Item Problem Description
1.1 Speaker no sound
1.2 LED no light
1.3 Power/Volume Knob no function
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Service Guide Model No : SP-I250G
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.
1.1 Speaker no sound (Line in jack no function)
Problem
Analyze
and
Identify
Cause
Solution
Speaker no sound
Component cold
solder or Short
Circuit
Defective U2 Speaker cable disconnect,
USB1 defective or
speaker damaged
Check solder
point on PCBA
Check and
Replace defective
IC
Reconnect speaker cable or
replace defective speaker
d
river and component
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Service Guide Model No : SP-I250G
1.2 LED no light
Problem
Analyzer and
Identify the Causes
Solutions
Power LED no light
Component cold
solder or Short
Circuit
Defectiv
e U
1
,Q1
or Q2
BT1
or L
E
D1
, LED2
defective
Check solder
point on PCBA
Check and
Replace defective
IC
or Transistor
R
eplace defectiv
e
LED or
Battery
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Service Guide Model No : SP-I250G
1.3 Power/Volume Knob no function
Problem
Analyzer and
Identify the Causes
Solution
Power/Volume no function
Component cold
solder or Short
Circuit
VR1 efective
Check solder
point on PCBA
Replace defective VR1
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Service Guide Model No : SP-I250G
Chapter 2. Specifications
NO. Description Unit Specifications
1 Out Power at THD 10% W
≧ 1.5
2 Sensitivity mV
600± 60
3 Freq. Response (1KHz -3dB) Hz 70~20K ± 10%
4 S/N ratio dB
≧
≧≧
≧ 70
5 Hum & Noise (Vol.: max) mV
≦
≦≦
≦ 2
6 Cross talk dB
≧
≧≧
≧ 40
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Service Guide Model No : SP-I250G
Chapter 3 Block Diagram
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Audio in
LCH
USB In
Power Sw, &
Volume control Audio
Amplifier IC
BA2010
Speaker out
Battery Charge
IC TP4055
Audio in
RCH
USB In
Power Sw, &
Volume control Audio
Amplifier IC
BA2010
Speaker out
Battery Charge
IC TP4055

Service Guide Model No : SP-I250G
Chapter 4. Exploded View
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Service Guide Model No : SP-I250G
Chapter 5. Part List
No
DESCRIPTION Qty UNIT Part No.
1
BA2010 IC
2 U2
2 TP4055 IC 2 U1
3 USB Connector 2 USB1
4 TOP COVER 2 BPC500039-0001
5 BOTTOM COVER 2 BPC510039-0001
6 KNOB COVER 2 BPC500040-0001
7 BODY COVER 2 BPC510040-00AA
8 VOLUME DISK 2 BPK505047-00AA
9 SPK UNIT 1 FSA510215-1406
10 WIRE A'SSY
1
NWA500120-0001
11 LIGHT GUIDE BPC500041-00AA
12 BATTERY 1
FBY508037-0004
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Service Guide Model No : SP-I250G
Chapter 6. Schematic Diagram
Pls refer to The Attachment
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1
1
2
2
3
3 4
D
C
B
A
C4
104
VCC
C3
10uF
C6
105
R9
240k
R12
56k
R14
56k
R15
240k
R7
100K
R8
680R
R10 680R
LR CH
USB 5V
R4
10K
R3
2K BT1 3.7V
Charge Current(R11) : 10k 100mA
C5
22P
Q1
C945
Q2
C945
R5
330R
R1
15K
VCC
R 11 1k
R 13 1k
C12 104
C15 104
C7 105
C11 105
L1
BEAD120
L3 BEAD120
L4 BEAD120
L6
B E A D 120
CHRG
1
GND
2
BAT 3
PROG 5
V cc 4
U1
TP 4055
VDD
B1
IN-
C1
IN+
A1
ShutDN
C2 GND B3
Vo- A3
Vo+ C3
PVDD B2
GND
A 2
U2
BA2010
R6
4.3K
L2
BEAD120
L5
BEAD120
C14
270P
C8
270P
C9
270P
S+
S-
SP K 1
4R
L CH
RCH
GND
C10 BEAD100
+5
+5
C17
471
C13
471
C16
151
VDD 1
D+ 2
D- 3
GND 4
5
6
7
8
USB1
C2
104
C1
10uF
GND
R2
0R
45 VR1B
10K
3
2
VR1A
10K
LED1
RED
LED2
BL UE
i
PCB Rule
i
PCB Rule
i
PCB Rule
i
PCB Rule
CHRG
1
GND
2
BAT 3
PROG 5
V cc 4
U3
MP 2016/NC
R16
2.5K/NC
GND

Service Guide Model No : SP-I250G
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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