Genius GHT-S200 Manuale utente
Service Guide GHT-S200
SERVICE GUIDE
KYE SYSTEMS CORP
GHT-S200
Version:1.0
Version 1.0 Page 1 of 21
Service Guide GHT-S200
Revision History
Version Date Change
1.0 22/08/2005
Version 1.0 Page 2 of 21
Service Guide GHT-S200
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 FL/FR, RL/RR channels no sound 7
1.2.2 CEN channel no sound 8
1.2.3 Woofer channel no sound 8
1.2.4 Woofer no power 9
Chapter 2. Specifications 10
Chapter 3. Block Diagram 12
Chapter 4. Exploded View 13
Chapter 5. Part List 15
Chapter 6. Schematic Diagram 16
SchematicDiagram 17
SchematicDiagram 18
SchematicDiagram 19
SchematicDiagram 20
Chapter 7. Important Notes 21
7.1 Packing Requirement for Sending the PCB Assembly by post 21
7.2 Short of Spare Parts while Repairing a Speaker system 21
Version 1.0 Page 3 of 21
Service Guide GHT-S200
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.
Version 1.0 Page 4 of 21
Service Guide GHT-S200
Chapter 1. How to Handle Defective Returns
1.1 Overview
Version 1.0 Page 5 of 21
Receiving Defective speaker form customers
Analyzing possible
malfunction causes
Deciding & proceeding
the rectification methods
Replace necessary
de
f
ect
iv
e
pa
r
ts
Return the speakers with
p
r
ope
r r
epac
k
ag
in
g
to
Verifying problems
proceeding
necessary tests
Proceeding tests to
verify if the speaker is
functioning normally
Function OK
Function NG
Function OK
Function NG
Service Guide GHT-S200
1.2 Problems
Item Problem Description
1.2.1 FL/FR, RL/RR channels no sound
1.2.2 CEN channel no sound
1.2.3 Woofer channel no sound
1.2.4 Woofer no power
Version 1.0 Page 6 of 21
Service Guide GHT-S200
* 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 FL/FR, RL/RR channels no sound
Problem
Analyzer and
Identify the Causes
Solutions
Version 1.0 Page 7 of 21
FL/FR,RL/RR channels no sound
Broken or short circuit
Check solder points on
PCB
Defective
U303,U310,IC200,IC2
01, CC1,CC2,CC4,
CC5,C326,C334,C329
,C337 Q300,ZD1,
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
Service Guide GHT-S200
1.2.2 CEN channel no sound
Problem
Analyzer and
Identify the Causes
Solutions
1.2.3 Woofer channel no sound
Problem
Analyzer and
Identify the Causes
Solutions
Version 1.0 Page 8 of 21
CEN channel no sound
Broken or short circuit
Check solder points on
PCB
Defective
U311,IC202,C209,CC
3,C332,Q300,ZD1
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
Woofer channel no sound
Broken or short circuit
Check solder points on
PCB
Defective
U301,IC202,U200,C22
1,C312,C320,R305,R3
07,C313,CN301
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
Service Guide GHT-S200
1.2.4 Woofer no power
Problem
Analyzer and
Identify the Causes
Solutions
Version 1.0 Page 9 of 21
Woofer no power
Broken or short circuit
Check solder points on
PCB
Defective
U100,U300,Y100,R30
3,R304,R300,C112,C1
37
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
Service Guide GHT-S200
Chapter 2. Specifications
Satellite – Center (AT 1KHZ):
NO Description Unit Specifications
1 Out Power at THD 10% W 20 ± 2
2 Sensitivity mV 300 ± 50
3 Freq Response (Ref:-3dB) Hz 40~20K
4 S/N ratio dB ≧60
5 Hum & Noise Vol:max mV ≦5
Satellite – Front (AT 1KHZ):
NO Description Unit Specifications
1 Out Power at THD 10% W 20± 2
2 Sensitivity mV 300 ± 50
3 Freq Response (Ref:-3dB) Hz 40~20K
4 Separation dB ≧35
5 S/N ratio dB ≧60
6 Hum & Noise Vol:max mV ≦5
Satellite – Rear (AT 1KHZ):
NO Description Unit Specifications
1 Out Power at THD 10% W 20 ± 2
2 Sensitivity mV 300 ± 50
3 Freq Response (Ref:-3dB) Hz 40~20K
4 Separation dB ≧35
5 S/N ratio dB ≧60
6 Hum & Noise Vol:max mV ≦5
Version 1.0 Page 10 of 21
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