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

Subwoofer
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Chapter 4. Exploded View
SP-HF1250A
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SATELLITE
12
11
1
9
8
6
7
5
4
3
2
10
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Chapter 4. Exploded View

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Subwoofer
Ref. No. Description RS Part No. Part No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Badge, L34xW16.9xT1.8 AL
Cloth , 2104 BLACK
Frame 6.0MDF
Speaker 4''4Ω20W
Speaker 1″8Ω15W
Wood-box, 9T MDF PVC F-517-3c
Female Button
Function PCBA , Volume
Heat sink, AL Silver
Screw BAΦ3.0x12 , zincification Black Color
Bracket L15*W10*T1.0
Screw M3x8 , zincification Black Color
Back Board 9.0MDF
Paper Tube IDΦ35*ODΦ39*70L
Screw BAΦ3.5x20, zincification Black Color
Power Switch
Screw PAΦ3.0x10, zincification Black Color
AL Board, Black Color
PCBA
Cable Fastner 4K-4
PCBA
IC ST TDA2030A
Nut whit flange M4, zincification Black Color
Transformer, 230V 50HZ
Screw ,M4*16 zincification Black Color
Knob,HIPS Silver Color
Deco ring HIPS, black coler
Screw BAΦ3.0x12 , zincification Black Color
Rubber foot ,black color
Screw BAΦ3.5x16 , zincification Black Color
016800958
014700618
034610688
010402978
010403028
035201968
027400148
033003428
017300478
017903258
021000378
017903228
034903138
015501168
017903248
011000118
017903278
034201308
033003478
027405578
033003488
019300238
008901148
017903238
026900958
026300698
017903258
015103558
017903268
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Chapter 5. Part List

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Satellite
Ref. No. Description RS Part No. Part No.
1
2
3
4
5
6
7
8
9
10
11
12
Badge, L34xW16.9xT1.8 AL
Cloth , 2104 BLACK
Frame 6.0MDF
Speaker 4''4Ω20W
Screw BAΦ3.0x12 , zincification Black Color
Speaker 1″8Ω15W
Female Button
Wood-box, 9T MDF PVC F-517-3c
Paper Tube IDΦ35*ODΦ39*70L
Back board, 9.0MDF
Rubber foot ,black color
Screw BAΦ3.5x16 , zincification Black Color
016800958
014700618
034610688
010402978
017903258
010403028
027400148
033901658
015501168
034903148
015103558
017903268
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Chapter 5. Part List

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6.1 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 the PCB assembly
by post, in that it would avoid unnecessarily lost or damage.
6.2 Short of spare parts while repairing a speaker system
If you are short of spare parts when you have some spesker systems waiting to
be repaired,it would be recommended to take the necessary parts from one
Speaker system,so that you may haye the as many speaker systems
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Chapter 6. Important Notes

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Chapter 7. Schematic Diagram
R
L
R
R
L
L
R
L
L
R
+
-
1
2
4
U1-A
IC-TDA2030
3 5
U1-B
IC-TDA2030
R1
22K
R2 22K
R3
1K
C1 C/101
+C2
22uF/25V
R4 1 OHM
C3
M/224
1
2
R-OUT
SPEAKER
+
-
1
2
4
U3-A
IC-TDA2030
R10
22K
R11 22K
R12
1K
C8 C/101
+C9
22uF/25V
R13
1 OHM
C10
M/224
1
2
L-OUT
SPEAKER
1
3
RCA1-A
2
4
RCA1-B
-
+
2 3
1
U5-A
IC-4558
+ -
5
6
7
U5-B
IC-4558
4 8
U5-C
IC-4558
R23
10K
R24 30K
C18
C/101
R26
10K
R28 30K
C20
C/101
+
C17 4.7uF/25V
+
C19 4.7uF/25V
R29 10 OHM
R30 10 OHM
1
2
3
4
5
PHONE
JK/5P/PHONE
1 2 3
4
5 6 7 8
P1
R33 1K
R34 1K
R35 22K
R36 22K
3 5
U2-B
IC-TDA2030
3 5
U3-B
IC-TDA2030
3 5
U4-B
IC-TDA2030
1
2
3
VR1-A
1 2 3
4
5
6
7 8
P2
R37
4.7K
1
2
3
VR2-A
R38
2.7K
C23
M/473
C24
M/124
1
2
3
VR3-A
R39
5.6K
C25
M/222
C26
M/103
4
5
6
VR1-B
R40
4.7K
4
5
6
VR2-B
R41
2.7K
C27
M/473
C28
M/124
4
5
6
VR3-B
R42
5.6K
C29
M/222
C30
M/103
D1
IN5401
D2
IN5401
D3
IN5401
D4
IN5401
1
2 3
P3
+
C31
4700uF/25V
+
C32
4700uF/25V
C33
C/104
C34
C/104
+
C35
100uF/25V
+
C36
100uF/25V
R43
2K
R44
2K
+
C37
100uF/16V
+
C38
100uF/16V
R47 470
R48
1K
D5
5.1V
+
C39
22uF/16V
LED
C7
M/104
C14
M/104
1
2
3
4
5
6
7
8
P6
1 2 3
4
5 6
7
8
P7
1
2
RCA2
1
2
P8
D6
9.1V
D7
9.1V
+
C40
4.7uF/25V
+
C41
4.7uF/25V
-
+
2
3
1
U6-A
IC-4558
+ -
5
6
7
U6-B
IC-4558
4 8
U6-C
IC-4558
+
C15 4.7uF/25V
+
C16 4.7uF/25V
+
C21 100uF/16V
+
C22 100uF/16V
+VCC
-VCC
+VCC