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