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Service Guide
SP-HF2.0 500
Version : 1.0
Page 1 of 15
SERVICE GUIDE
KYE
SYSTEMS CORP.
SP-HF2.0 500
Version : 1.0
Service Guide
SP-HF2.0 500
Version : 1.0
Page 2 of 15
Revision History
Version Date Change
1.0 11/08/2004
Service Guide
SP-HF2.0 500
Version : 1.0
Page 3 of 15
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 One or more channels no sound ………………..…7
1.2.2 Power LED (indicator) no light………………....…8
1.2.3 Volume , Bass no function...……………...………..8
Chapter 2. Specifications …………………………………………………………9
Chapter 3. Block Diagram ……………………………………………………….11
Chapter 4. Exploded View ……………………………………………………….12
Chapter 5. Part List ………………………………………………………………15
Chapter 6. Schematic Diagram …………………………………………………..17
Chapter 7. Important Notes ………………………………………………………19
7.1 Packing Requirement for Sending the PCB Assembly by Post …..19
7.2 Short of Spare Parts while Repairing a Speaker System …………19
Service Guide
SP-HF2.0 500
Version : 1.0
Page 4 of 15
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 .
Service Guide
SP-HF2.0 500
Version : 1.0
Page 5 of 15
Chapter 1. How to Handle Defective Returns
1.1 Overview
Verifying problems
Proceeding necessary tests
Receiving Defective speakers from
Customers
Analyzing possible malfunction
causes
Deciding & proceeding the
rectification methods
Replace necessary defective parts
Proceeding tests to
Verify if the speaker is
functioning normally
Return the speakers with proper
repackaging to customers
Function NG
Function OK
Function OK
Function NG
Service Guide
SP-HF2.0 500
Version : 1.0
Page 6 of 15
1.2 Problems
Item Problem Description
1.2.1 One or more channels no sound
1.2.2 Power LED (indicator) no light
1.2.3 Volume , Bass no function
Service Guide
SP-HF2.0 500
Version : 1.0
Page 7 of 15
Attention
1.2.1 One or more channels no sound
Problem
Solutions
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 .
One or more channels no sound
Broken or short circuit
Defective IC1
Speaker cable dis-connect or
speaker damaged
Check solder points on
PCB
Check and Replace
defective IC
Re-connect speaker cable or
replace defective speaker(s)
Analyzer and
Identify the Causes
Service Guide
SP-HF2.0 500
Version : 1.0
Page 8 of 15
1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume , Tone no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED defective
Defective,D1-4,
Dc cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume , Bass no function
Broken or short circuit
Defective C11-12,VR1,
VR2,R7-10,C5-6,C9-10
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components
Service Guide
SP-HF2.0 500
Version : 1.0
Page 9 of 15
Chapter 2. Specifications
NO. Description
Unit Specifications
1
Out Power at THD 10%
W
≧
7
2 Sensitivity
mV 500
±
70
3
Freq. Response (Ref:-3dB)
Hz 35Hz ~ 20KHz
4 Separation
dB
≧
40
5 S/N
ratio
dB
≧
50
6
Hum & Noise Vol:max
mV
≦
10
Service Guide
SP-HF2.0 500
Version : 1.0
Page 10 of 15
Chapter 3. Block Diagram
AUDIO IN
Volume
Control
Power
Amplifier
R.CH Speaker
AC IN
L.CH Speaker
Tone
Control
Power
Conditioner
Service Guide
SP-HF2.0 500
Version : 1.0
Page 11 of 15
Chapter 4. Exploded View
Host
Service Guide
SP-HF2.0 500
Version : 1.0
Page 12 of 15
Satellite
Service Guide
SP-HF2.0 500
Version : 1.0
Page 13 of 15
Chapter 5. Part List
No. DESCRIPTION Qty
UNIT
Part
No.
1 SP-HF 2.0 500/Body/Satellite
1
PC 5-101-01
2 Speaker Unit 3” 4ohm 8W
2
PC 5-100-01
3 TPR Isolation Cone, SP-HF2.0 500
8
PC 5-100-02
4 SP-HF 2.0 500/Body/Host-120V-US
5-101-02
5 SP-HF 2.0 500/Body/Host-230V-EU
5-101-03
6 SP-HF 2.0 500/Body/Host-240V-UK
5-101-04
7 SP-HF 2.0 500/Body/Host-240V-AU
1 PC
5-101-05
8 PCBA, SP-HF2.0 500
1
PC 5-101-06
9 IC,
TDA2007A
1
PC 1-100-07
10 Transformer, 120V:14.5VAC & 1.2A
5-100-03
11 Transformer, 230V:14.5VAC & 1.2A
5-100-04
12 Transformer, 240V:14.5VAC & 1.2A
1 PC
5-100-05
13 Gift Box, SP-HF2.0 500
1
PC 5-102-03
14 Cushion(Top/Bottom), SP-HF2.0 500
1
SET 5-102-02
15 Round Yellow Type Label (on Gift Box )
1
PC 5-102-04
16 S/N Label ( on Host & Gift Box )
2
PC 5-102-01
17 Carton, SP-HF 2.0 500
1/4
PC 5-102-05
18 PE Bag, SP-HF 2.0 500
2
PC 5-102-06
Service Guide
SP-HF2.0 500
Version : 1.0
Page 14 of 15
Chapter 6. Schematic Diagram
Service Guide
SP-HF2.0 500
Version : 1.0
Page 15 of 15
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.