Genius SP-HF1250A User manual

S
SE ER RV VI IC CE E G GU UI ID DE E
KYE SYSTEMS CORP.
S
SP P- -H HF F1 12 25 50 0A A
Version:1.0
Total 16 Pages (Cover Page included)

Version: 1.0 Page 1/15
Version Date Changes
1．0 Official Release
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Revision Histor
y

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Revision History……………………………………………………………………..1
Table of Contents………………………………………………… ………….2
Getting Started………………………………………………… ……….……………....3
Conventions Used in this Guide………………… ………...……………….3
Safety Precautions……………………………… ………………...………..3
Chapter1. How to Handle Defective Returns………………… ……………………….4
1.1 Overview……………………………………………………………….4
1.2 Problems………………………………………………………………..5
1.2.1 Power LED (indicator) Unlighted………………...……………......6
1.2.2 Does not work or one channel no sound……………………….…..7
1.2.3 Noise……………………………………………………………….7
Chapter2. Specifications………………………………………………………………..8
Chapter3. Block Diagram……………………………………………………………....9
Chapter4. Exploded View…………………………………………………………….…10-11
Chapter5. Part List……………………………………………………………………..12-13
Chapter6. Important Notes…………………………………………………………....14
6.1 Packing Requirement for sending the PCBAssembly by post……….…14
6.2 Short of Spare Parts while Repairing a Speaker System…………….….14
Chapter7. Circuit Schematic……………………………………………………………15
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Table of Contents

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Conventions Used in this Guide
Pay Special Attention: Instructions that areimportantto
remember and may prevent mistakes.
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 substance, such as water, other liquids or chemicals, from entering the speakers
while performing maintenance procedures on the speakers.
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Getting Started
Attention
Caution: Information that, if not followed, may result in
damage to the product.

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1.1 Overview
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Chapter 1. How to Handle Defective Returns
Receiving Defective
Speakers
from Customers
Verifying problems&
Proceeding necessary tests
Analyzing possible
Malfunction causes
Deciding & proceeding
the rectification methods
Replacing necessary
Defective parts
Proceeding tests
To verify if the speaker is
functioning normally
Functioning OK
Return the speakers with
Pro
p
er re
p
acka
g
in
g
to customers
Functioning NG Functioning OK
Functioning NG

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1.2 Problems
Item Problemdescriptions
1.2.1 Power LED (indicator) unlighted
1.2.2 Does not work or one channel no sound
1.2.3 Noise
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Attention
1.2.1 Power LED (indicator) unlighted
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Please follow the numbered sequence marked within parenthesis given in individual
Flow chart, in that this is the best-recommended sequence to rectify the problems.
Problem
Analyze
and
Identify
the Causes
Solutions
Secondary wire Of
transformer is
Disconnedcted of
defective
CheckD1.2
.3.4
Check
LED Defective power
Switch
Resolder or replace defective component（s）
Power LED （indicator）unlighted

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1.2.2 Does not work or one channel no sound
1.2.3 Noise
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Problem
Analyze
and
Identify the
Causes
Solutions
Does not work or
One channel no sound
Broken o
r
Short circui
t
Defective IC
(TDA2030A)
Defective
Audio cable
Replace
Audio cable
Check solde
r
Points on PCB
And resolder
defective one
(
s
)
Check and replace
Defective IC
(TDA2030A)
Problem
Analyze and
Identify the
Causes
Solutions
Noise
Defective
VR Defective IC
(TDA2030A)
Check and replace
defective component(s) Replace
Defective VR Replace defective IC
(TDA2030A)
Component(s) aroun
d
IC is/are defective

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Satellite
No
. DESCRIPTION UNIT NOMINAL LIMIT
FR FL ≥19
1. FRONT OUTPUT POWER @THD 10% W 19.8 19.8
2 SENSITIVITY（1KHz）@RATED O/P
POWER
mV 640 640
±50
3 SENSITIVITY(1KHz)@1W O/P POWER mV 130 130 ±20
4 MAX INPUT LEVEL@1% THD mV 500 500 ±40
5 FREQUENCY RESPONSE(1KHz=0dB)
50Hz dB -3 -3
±0.5
1K dB 0 0
±0.5
20K dB -3 -3
±0.5
6 S/N @RATED O/P POWER dB 80 80 ≥60
7 CHANNEL UNBALANCE @REF O/P
POWER
dB 0.3 0.3
≤0.5
8 CHANNEL SEPARATION(ONE
CHANNEL IN; OTHER CHANNEL INPUT
SHORTING)
dB 59 59
≥45
9 HUM NOISE (VR MAX)
(VOLUME MAX; INPUT SHORTING)
mV 0.9 0.9 ≤5
10 HUM NOISE (VR MIN)
(VOLUME MIN. INPUT SHORTING)
mV 0.2 0.2 ≤3
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Chapter 2. Specifications

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Chapter 3. Block Diagram