KYE Systems Corp. Genius SP-i300 User manual

Service Guide Model No : SP-i300
SERVICE GUIDE
KYESYSTEMS CORP.

Service Guide Model No : SP-i300
Revision Histor
Version Date Change
1.0
05/10/2010 First Release
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Service Guide Model No : SP-i300
Table of Contents
Revision History …………………………………………………………………….2
Table of Contents ……………….……………………………………………………
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. Power/Volume Knob no function
Chapter 2. Specifications ………………………………………………………….10
Chapter . Block Diagram ……………………………………………………….11
Chapter 4. Exploded View …………………………………………………12 & 1
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-i300
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-i300
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-i300
Problems
Item Problem Description
1.1 Speaker no sound
1.2 LED no light
1. Power/Function Knob no function
1.4 USB no function
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Service Guide Model No : SP-i300
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, U5,
U9
Speaker cable disconnect,
USBJack1, J2 defective
or speaker damaged
Check solder
point on PCBA
Check and
Replace defective
IC
Reconnect speaker cable or
replace defective speaker
driver and component
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Service Guide Model No : SP-i300
1.2 LED no light
Problem
Analyzer and
Identify the Causes
Solutions
1. Power/Function Knob no function
Problem
Analyzer and
Identify the Causes
Solutions
Power LED no light
Component cold
solder or Short
Circuit
Defective U1, U2,
U4, U6, U7 or Y1
BT1 or LED1, LED2
defective
Check solder
point on PCBA
Check and
Replace defective
IC
or
Crystal
Replace defective LED or
Battery
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Power/Function Knob no
function
Component cold
solder or Short
Circuit
Defective U2 or
Y1
VR-SW J1 or SW1 ,SW2,
SW , SW4 defective
Check solder
point on PCBA
Check and
Replace defective
IC
or Crystal
Replace defective VR or
Tact SW

Service Guide Model No : SP-i300
1. USB no function
Problem
Analyzer and
Identify the Causes
Solution
USB no function
Component cold
solder or Short
Circuit
U2, U or CON1 efective
Check solder
point on PCBA
Check and Replace
defective U2, U or CON1
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Service Guide Model No : SP-i300
Chapter 2. Specifications
NO. Description Unit Specifications
1 Out Power at THD 10% W
≧1.5
2 Sensitivit mV
600± 60
3 Freq. Response (1KHz -3dB) Hz 120~20K ± 10%
4 S/N ratio dB
≧
≧≧
≧ 70
5 Hum & Noise (Vol.: max) mV
≦
≦≦
≦ 2
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