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  9. Genius SP-i160 User manual

Genius SP-i160 User manual

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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/ 010
Version : 1.0
Page of 14
Service Guide
SP-i160
Table of Contents
Revision History …………………………………………………………………….
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. Problems …………………………………………………………...6
1. .1 No sound (Line in jack no function) …………..…7
1. . Power LED (indicator) no light……...………....…8
1. .3 Li-ION battery can’t charge.…..….…………….8
Chapter . Specifications ………………………………………………………….9
Chapter 3. Block Diagram ……………………………………………………….10
Chapter 4. Exploded View ……………………………………………………….11
Chapter 5. Part List ………………………………………………………………1
Chapter 6. Schematic Diagram …………………………………………………..13
Chapter 7. Important Notes ………………………………………………………14
7.1 Packing Requirement for Sending the PCB Assembly by Post …..14
7. 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 . 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. Problems
Item Problem Description
1. .1 No sound (Line in jack no function)
1. . Power LED (indicator) no light
1. .3
Li-ION battery can’t charge
Version : 1.0
Page 6 of 14
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. .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
JACK defective or
speaker damaged
Solutions
Check solder points on
PCB
Check and Replace
defective IC
Re-connect speaker
cable or replace
defective speaker(s)
Version : 1.0
Page 7 of 14
Service Guide
SP-i160
1. . 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. .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
U 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
Out Power at THD 0%
W
≧
≧≧
≧ .8
2
Sensitivity
mV
600 ± 50
3
Freq. Response ( KHz -3dB)
Hz
80~20K ± 0%
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
Version : 1.0
Page 10 of 14