KYE Systems Corp. Genius SP-F120 User manual

Service Guide SP-F120
SERVICE GUIDE
KYE SYSTEMS CORP
Version 1.0 Page 1 of 15

Service Guide SP-F120
SP-F120
Version:1.0
Revision History
Version Date Change
1.0 26/05/2006
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Service Guide SP-F120
Table of Contents
RevisionHistory 2
TableofContents 3
GettingStarted 4
Conventions Used in this Guide 4
SafetyPrecautions 4
Chapter 1. How to Handle Defective Returns 5
1.1Overview 5
1.2Problems 6
1.2.1 L/R channels no sound 7
1.2.2No power 8
Chapter 2. Specifications Satellite 9
Chapter 3. Block Diagram 10
Chapter 4. Exploded View Satellite 11--12
Chapter 5. Part List 13
Chapter 6. Schematic Diagram 14
Chapter 7. Important Notes 15
7.1 Packing Requirement for Sending the PCB Assembly by post 15
7.2 Short of Spare Parts while Repairing a Speaker system 15
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Service Guide SP-F120
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 chemical, from
entering the speakers while performing maintenance procedures on the
speakers.
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Service Guide SP-F120
Chapter 1. How to Handle Defective Returns
1.1 Overview
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Receiving Defective speaker form customers
Analyzing possible
malfunction causes
Deciding & proceeding the
rectification methods
Replace necessary
defective
p
arts
Return the speakers with proper
re
p
acka
g
in
g
to customers
Verifying problems
proceeding
necessar
y
tests
Proceeding tests to
verify if the speaker is
functionin
g
normall
y
Function OK
Function NG
Function OKFunction NG

Service Guide SP-F120
1.2 Problems
Item Problem Description
1.2.1 L/R channels no sound
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1.2.2 NO power
* Attention

Service Guide SP-F120
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 L/R channels no sound
Problem
Analyze and
Identify the Causes
Solutions
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L/R channels no sound
Broken or short circuit
Check solder points on
PCB
Defective
U1,VR1,PhoneJK,C3,
C4,C11,C12,C13,C14,
R7,R8
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components

Service Guide SP-F120
1.2.2 No power
Problem
Analyze and
Identify the Causes
Solutions
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No power
Broken or short circuit
Check solder points on
PCB
Defective
D1~D4,
Power SW,
Transformer,
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective components

Service Guide SP-F120
Chapter 2. Specifications
Satellite – Front (AT 1KHZ):
NO Description Unit Specifications
1 Out Power at THD 10% W 0.8± 0.2
2 Sensitivity mV 400 ± 40
3 Freq Response (Ref:-3dB) Hz 100~20K
4 Separation dB > 35
5 S/N ratio dB > 40
6 Hum & Noise Vol:max mV <3
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Service Guide SP-F120
Chapter 3. Block Diagram
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Service Guide SP-F120
Chapter 4. Exploded View
Host (Woofer)
2.Knob
4.Front shell
3.Speaker 5090
7.Rear shell
6.Transformer
5.PCBA
1.Net frame
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Service Guide SP-F120
Satellite
1. Net frame 2.Speaker 5090
3. Front shell
4. Rear shell
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Service Guide SP-F120
Chapter 5. Part List
NO DESCRIPTION Qty UNIT Part No
1 SP-F120/BODY/SATELLITE-FL 1 PC F-000-047-0000
2 SP-F120/BODY/SATELLITE-FR 1 PC F-000-047-0000
3 SPEAKER UNIT 5090 4 OHM/3W 2 PC 1-341-400-0013
4 PCBA SP-F120 1 PC X-000-000-0120
5 IC 2025（SJ）1 PC Q-000-000-0068
6 VR+SW SWITCH, B10K 1 PC 1-224-000-0043
7 CARTON, SP-F120 1 PC 6-017-078-0010
8 TRANSFORMER, 230V:9V AC / 0.2A 1 PC 3-296-500-0015
9 AUDIO CABLE, 1ST to 0 ST, SP-F120 1 PC 3-362-116-0025
10 AUDIO CABLE, 0 to 0, SP-F120 1 PC 3-359-100-0008
11 POWER CORD, BLCK,EU, SP-F120 1 PC 1-372-011-0005
12 S/N LABEL 2 PC 5-030-400-0500
13 CARTON LABEL 1 PC 5-030-400-0501
14 Round Red type Label, Ф10mm 1 PC 5-130-163-0003
15 FOAM BAG, SP-F120 2 PC 6-004-000-0025
16 PE BAG, POWER CORD , SP-F120 1 PC 6-102-000-0012
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Service Guide SP-F120
Chapter 6. Schematic Diagram
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5090 4OHM 3W

Service Guide SP-F120
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
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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.