Service Guide
SP-i160
SERVICE GUIDE
KYESYSTEMS CORP.
SP-i160
Version : 1.0
Page 1 of 14
Service Guide
SP-i160
Version : 1.0
Revision History
Version
Date
Change
1.0
15/01/2010
Version : 1.0
Page 2 of 14
Service Guide
SP-i160
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 No sound (Line in jack no function) …………..…7
1.2.2 Power LED (indicator) no light……...………....…8
1.2.3 Li-ION battery can’t charge.…..….…………….8
Chapter 2. Specifications ………………………………………………………….9
Chapter 3. Block Diagram ……………………………………………………….10
Chapter 4. Exploded View ……………………………………………………….11
Chapter 5. Part List ………………………………………………………………12
Chapter 6. Schematic Diagram …………………………………………………..13
Chapter 7. Important Notes ………………………………………………………14
7.1 Packing Requirement for Sending the PCB Assembly by Post …..14
7.2 Short of Spare Parts while Repairing a Speaker System …………14
Version : 1.0
Page 3 of 14
Service Guide
SP-i160
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 .
Version : 1.0
Page 4 of 14
Service Guide
SP-i160
Chapter 1. How to Handle Defective Returns
1.1 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
Version : 1.0
Page 5 of 14
Service Guide
SP-i160
1.2 Problems
Item Problem Description
1.2.1 No sound (Line in jack no function)
1.2.2 Power LED (indicator) no light
1.2.3
Li-ION battery can’t charge
Version : 1.0
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Service Guide
SP-i160
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 One or more channels no sound (Line in jack no function)
Problem
No sound
Analyzer and
Identify the Causes
Broken or short circuit
Defective U1,
U4
Speaker cable
dis-connect , JACK1 or
JACK2 defective or
speaker damaged
Solutions
Check solder points on
PCB
Check and Replace
defective IC
Re-connect speaker
cable or replace
defective speaker(s)
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Page 7 of 14
Service Guide
SP-i160
1.2.2 Power LED (indicator) no light
Problem
Power LED (indicator) no light
Analyzer and
Identify the Causes
Power switch or LED
defective
Defective
J1
Solutions
Re-solder or replace
defective component(s)
1.2.3 The Li-ION Battery can’t charge
Problem
The Li-ION battery can’t
charge
Analyzer and
Identify the Causes
Broken or short circuit
U2 Battery
Solutions
Check solder points on PCB
Check and Replace defective
components
Version : 1.0
Page 8 of 14
Service Guide
SP-i160
Chapter 2. Specifications
NO.
Description
Unit
Specifications
1
Out Power at THD 10%
W
≧
≧≧
≧ 1.8
2
Sensitivity
mV
600 ± 50
3
Freq. Response (1KHz -3dB)
Hz
180~20K ± 10%
4
Separation
dB
≧
≧≧
≧ 40
5
S/N ratio
dB
≧
≧≧
≧ 80
6
Hum & Noise (Vol.: max)
mV
≦
≦≦
≦ 2
Version : 1.0
Page 9 of 14
Service Guide
SP-i160
Chapter 3. Block Diagram
Audio
—
►
Tone
Control
Volume
Control
—
►
L.CH Speaker
A
Power
i
Ac
in
Conditioner
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Page 10 of 14
Service Guide
SP-i160
Chapter 4. Exploded View
Version : 1.0
Page 11 of 14
Service Guide
SP-i160
Chapter 5. Part List
DESCRIPTION
Qty
UNIT
Part No.
RS,ASM,SP-I160,HOST,BLACK 31730952100
RS,ASM,SP-I160,HOST,WHITE
1
PC
31730952101
Loud Speaker 1.25" 4 ohm 1~2W
1
PC
FSA510112-1402
Rubber Pad(Φ4.8 X 2.3T), SP-i160
3
PC
15400009100
PCBA, SP-i160
1
PC
ASL507003-0026
IC, JRC NJM2761
1
PC
IC, T1 TPA2031D1
1
Set
RCI203101-0001
IC, LN,LN2054
1
PC
BATTERY, SP-i160
1
PC
FBY508037-0003
FANNEL BAG SP-i160 1
PC
12290076100
S/N LABEL
SP-i160
2
PC
12061017100
CARD SP-i160 / B
12020186100
CARD SP-i160 / W
1
PC
12020187100
INNER TRAY SP-i160
1
PC
12150227100
PET BOX, SP-i160
1
PC
12140001100
Anti-fake Label ( on Gift Box )
1
PC
12061993100
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Carton, SP-i160
1/50
PC
12100465100
Version : 1.0
Page 12 of 14
Service Guide
SP-i160
Chapter 6. Schematic Diagram
Pls refer to next page
Version : 1.0
Page 13 of 14
1 2 3 4
A
B
C
D
4
321
D
C
B
A
Title
Number RevisionSize
A4
Date: 21-Jan-2010 Sheet of
File: E:\MODEL INFO\KYE\F4\Mr Pai.ddb Drawn By:
VER090820
S1
SPK
R13
8K2
R8
8K2
C12
104
Vcc
C11
10uF
C5
471
C1
10uF
R5
240k
R4
68k
Shut_DN
1
2
3
4
5
J1
CN4P-USB
L1
BEAD120
5V
R11
4.7K
C3
100uF
C2
104
CHRG
1
GND
2
BAT
3
PROG
5
Vcc
4
U2
R10
2K
LD1
RED
BT1
BATTERY
LN2054
Vcc
S1
SW-SPDT
USB ON
BAT ON
C13
151
R12
2K
LD2
BLUE
R9
BEAD120
Q1
NC
C14
NC
SP-i160
C20
224
C17
224
C18
223
C23
224
GND
V+
1
Out1
2
IN1
3
INT
4
SW
7
IN2
8
OUT2
9
GND
10
Vref
5
Sense
6
U4
IC-NJM2761
GNDGND
R7
3.6k
C16
151
C19
224
C22
105
C21
105
Vcc
GND
C7
471
R1
68k
R3
240k
R2
1k
C8
270P
C10
270P
C9
270P
R6
100K
VDD
B1
IN-
C1
IN+
A1
ShutDN
C2
GND
B3
Vo-
A3
Vo+
C3
PVDD
B2
GND
A2
U1
TPA2031D1
So-
So+
L2
BEAD120
L3
BEAD120
C4
473
C6
473
Service Guide
SP-i160
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.
Version : 1.0
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