KYE Systems Corp. Genius SP700 User manual

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KYE System Corp., LTD
MaintenanceManual
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Catalog
Part One: Problem solving process
1.1 Composition diagram-------------------------------------------------------------------3
1.2 Problem solving flow chart------------------------------------------------------------3
1.3 Defective phenomenon and solving-------------------------------------------------4-6
Part Two: Components assembly method
2.1 Main unit disassembly and assembly step--------------------------------------------7
2.2 Cabinet disassembly and assembly step----------------------------------------------7
2.3 Main board disassembly and assembly step-----------------------------------------8
2.4 LED replacement step------------------------------------------------------------------9
2.5 Signal cable and ribbon wire replacement step-------------------------------------9
2.6 DiodeΡCapacitorΡICΡSwitchΡEarphone Jack replacement step-----------10
2.7 Transducer disassembly and assembly step-----------------------------------------11
2.8 Amplified IC replacement step-------------------------------------------------------11
2.9 ICΡTransistor and Potentiometer disassembly step------------------------------11
2.10 Clothing grill framework assembly step--------------------------------------------12
Part Three: Other items
Part Four: Supplement
4.1 Maintenance Tools--------------------------------------------------------------------13
4.2 Main unit assembly explode diagram ----------------------------------------------14
4.3 Satellite assembly explode diagram ------------------------------------------------15
4.4 Electric Schematic---------------------------------------------------------------------16
4.5 Repair Material List-------------------------------------------------------------------17
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Part One: Problem solving process
1.1 Composition diagram
Composition Diagram
1.2 Problem solving flow chart
The flow chart for sales service unit returned from customer
Jack Boar
d
Main Boar
d
R S
p
eake
r
Ada
p
te
r
L
S
p
eake
r
Return defective unit
Analysis rooting
Cause
Confirming the
inferior issue(Test)
Replacement service
p
arts
Root shooting
Confirming the results
Sent back to customer

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1.3 Defective phenomenon and solving method.
1.3.1 Main issue:
a. LED light off.
b. No output.
c. System down.
d. The volume control is random.
e. Noise and distortion
f. No output on earphone.
g. Others
1.3.2 Root cause analysis and related solving method
a. LED light off.
b. No output
ʳʳ
No si
g
nal
Mechanical PCBA
Replace LED
Burnt out
Problem Analysis
Root cause
Counter measure
LED is
broken The copper foil is
chapped
Replace LED
Replace ribbon wire
The ribbon wire is
broken
transduce
r
Root cause
Counter measure
Problem Analysis A
ud
i
o
c
a
b
l
e
No out
p
ut
PCBA
Si
g
nal cable faile
d
A
ud
i
o
c
a
b
l
e
Re
p
lace Audio cable
transducer faile
d
Re
p
lace transduce
r
JACK boar
d
Main boar
d
Repair the
chapped position
Ear
p
hone JAC
K
faile
d
IC
(
U2
)
faile
d
Re
p
lace ear
p
hone Jac
k
Re
p
lace IC

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c.Systemdown
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d. The volume control is random
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ʳʳʳʳʳʳʳ ʳʳʳʳʳʳʳ
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e. Noise and distortion
Problem analysis
Root cause
Countermeasure
Volume control is rando
m
Main board
Defected VR (potentiometer )
Replace VR(VR1/VR2)
Problem anal
y
sis
Root cause
Countermeasure
Problem anal
y
sis
Root cause
Countermeasure
S
y
stem down
Cable
Ada
p
te
r
Replace adapter
Main boar
d
Am
p
lifie
r
Sw
i
tc
h
b
r
o
k
e
nDC Jack broken
The ground lead of power
IC(U2) is failed
Replace switch
Power suppl
y
Replace IC(U2) Replace DC jack
Noise and distortion
transduce
r
Defected Transduce
r
Replace transducer
Main boar
d
PCBA
Defected IC
(
U2
)
Amplifie
r
Replace PCBA Replace IC(U2)
Capacitor and
resistor are defective

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f. No output on earphone
g. Other issue
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No output (earphone)
Audio Cable
O
p
en circuit
(
cable is faile
d
)
Ear
p
hone Jack faile
d
Replace earphone jack
Replace Cable
Jack board
Problem anal
y
sis
Root cause
Countermeasure
Problem anal
y
sis
Root cause
Countermeasure
Others
Switch NG
Switch is broken
Replace Switch
Scratches
Scratches caused by crash
Replace service parts

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!
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! Part two: Components assembly method
2.1 Main unit disassembly and assembly :
1. The main board has the function of power and Volume controlling, etc. and the
LED is placed in the Volume Knob.
2. Should take apart the Volume knob first and then change the LED if need repair or
change LED, on contrary, need open the front cabinet.
3. Should obey to the basic step and then could open the speaker box.
2.2 Front cabinet assembly and disassembly step
If no special Jigs or fixture, could use screwdriver, nail, solder iron, Multi-meter,etc.
instead.
Main box contents: Front and rear cover, screw, transducer, buzzer, PCBA
combination, Volume Knob, Switch button, clothing grille framework, 3.5 & stereo
cable.
Loose the 5pcs of screws from A to E in series which are fixed on the front panel and
cabinet (Refer to picture 1.1).
კ 2/2!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
ʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳ(picture 1.1)
Then grasping the two cable from the cabinet, open the cabinet; aiming at the center of the
master, press the cabinet and then place the 5pcs of screws from A to E(refer to picture 1.1)
in series. Please take note that one end of cable direction need close to the bottom.
ʳʳ
AB
C
D
E

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2.3 Main board assembly and disassembly step
Refer to the following steps:
(1).Remove the VOLUME.BASS.TREBLE knob. Please refer to picture 1.2ʳ
ʳʳʳʳ(2). Take apart the cabinet. (refer to picture 1.3)
ʳʳʳʳʳʳʳʳ(3) Remove the 5pcs of screw from potentiometer and take out the main board.
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) picture !2/3* !
) picture !2/4* !
) picture !2/5* !

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!
2.4 Change LED step:ʳʳʳʳ
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Remove the Volume knob by using the hot melt adhesive stick, drop the machine
cleaner onto the
LED Light transferring pole (Refer to picture 1.5),about 30s later, pick out of the
glue by using the tweezers, then take apart of the LED and welding by solder iron at
the constant temperature, check the LED polarity and add the solder ,then dispense
hot melt adhesive to fix the pole.
ʳʳʳʳʳʳʳʳ
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2.5 Change Audio wire and joint wire step:
Confirm the corresponding Audio wire color before taking apart of the wire, drop
the machine cleaner at the yellow glue position every two or three minutes (repeat
this action about two or three times, then pick out of the yellow glue by using the
tweezers, heat up the wire joints, using the de-soldering tool till no solder exists on
the hole, then pull the audio wire.
Confirm the corresponding Audio wire color before fixing of the wire firstly, insert
the audio wire and add some solder ,then drop the glue on to the components.(refer
to picture 1.7)
) picture !2/6* !
( picture !2/7* !
Transferring pole
) picture !2/8*!

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2.6 Change Diode, Capacitor, Switch and earphone Jack step:
Check the NG component first, heat up the weld position by using the solder iron,
remove the NG component, Place the confirming part at the right position, and
solder to fix it.
!
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2.7 Speaker disassembly and assembly step
According to the method of Master disassembly and assembly step, remove the
screw (4PCS 3*5TP2) from A to D in series (refer to picture1.9), take out of the
speaker and then welding the speaker wire by using the iron solder.
!
Confirm the polarity of the speaker wire.The black-white one should be welded at the
“+” poison, and the black one should be welded at “-” poison. ( refer to picture 2.1)
) picture !2/:*!
) picture !3/1*!
) picture !2/9*!
A
D
B
C

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!!!!!!!
Then place the screw(4PCS 3*5TP2) from A to D in series.
2.8 Amplified IC changing step
1.Remove the screw938TP1)first (refer to picture 2.2),heat up the IC foot by using
thesolder iron, then remove the IC.(U2)
!!!!!!!When change the IC, add some thermal paste at the touch-surface.(refer to picture 2.4)
2.9 ICΡ
ΡΡ
ΡTransistor and Potentiometer disassembly step
Check the component by using the multi-meter first, heat up the welding position by
the solder iron, remove the NG part. confirm the spec. and parameter before change
the part, when place the part please check the polarity.
welded at the “+” poisonwelded at “-” poison.
Thermal paste
screw
VR
) picture !3/2*!
) picture !3/3*! )
picture !3/4*! )
picture !3/5*!
) picture !3/6*!

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!
2.10 Clothing grille framework
Aiming at one corner, fix the clothing grill framework (refer to picture marked a),
then load the driver(refer to picture marked a’),another three corners should be
placed at the same time.(refer to picture 2.6)
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ʳʳʳ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Remark: the method of take apart of the satellite could refer to the main unit.
a
(picture !3/7*!

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Part Three : Other items
!
As PCBA is elegant electronic circuit board, it consists of the main board, jack board,
etc., if needs send back to repair, please pay more attention to the packing methods :
1. Considered the IC was populated on the PCBA, So need use the static
protection bags when packing the PCBA to avoid the IC is damaged.
2. As the Speaker is the key part, please pay more attention to protect the surface
of the speaker (no scratch and pressure) when sending back it to avoid the
unnecessary damages
3. If needs repair the Speaker system , please pack it with the original package
to assure the quality.
Part Four: Appendix!
!!
!
4.1 Maintenance Tools!
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!
) picture) !2/4.2!!!!!!!
1. VCD ( CD) and Discs ,etc.
2. Adapter
3. Plus driver
4. Tweezes
5. De-sodering tool
6. Multi-meter
7. Hot melt adhesive gun
8. solder iron(40W)
9. earphone
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- 14
4.2 Main unit assembly explode diagram
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ʳʳʳʳ ʳʳʳʳ ʳʳʳ

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- 15
ʳ
ʳʳʳˇ ˇˇ
ˇˁ
ˁˁˁˆ ˆˆ
ˆSatellite assembly explode diagram

4 1
CIV
3
MODE
7
GND
5
SVR 6
2 8
VCC 9
IN1+
IN2+
OUT1+ OUT2-
U2
TFA9843J
C26 220UF
5 6
7
U1B JRC4558
R24 22K
C3 NC
R25 22K
1/2_VCC
64
5
VR3B B10K*2
R7 1K
C34 MC224
C36 22UF
C29 100UF
MUTE
C37
470UF
C38 470UF
+ -
SP1 L_OUT
+ - SP2 R_OUT
3 2
1
U1A JRC4558
R26 22K
C4 NC
R23 22K
64
5VR2B
A100K*2/TREBLE
64
5
VR1B
A100K*2/BASS
R30 18K R21 4k7
C31 222 C33 103
C22
393
R14 2K
C10 105
31
2
VR3A B10K*2
R8 220R
C35 MC224
C13 10UF
C14 2200UF C15
104
C16 104
C17 104
C28
100UF
C18 104
VCC_18V
VCC_18V VCC_12V
R34 4R7
C19
104
C20
104
R35 4R7
C24
104
31
2VR2A
A100K*2/TREBLE
31
2
VR1A
A100K*2/BASS
R29 18K R20 4k7
C30 222 C32 103
C21
393
R13 2K
C9 105
C23
104
BASS TREBLE
TREBLEBASS
R19 22K
C5 10UF
C2 102
C1 102
R15 10K
R16 10K
C27 220UF
1/2_VCC
R10 1K
LED1 POWER
VCC_12V
R33 220R
R36 10K
C39 1UF
SP_L
SP_R
SP_L_OUT SP_R_OUT
VCC_18V
R32 100R
1/2_VCC
R1 1K R2 1K
R37 220R
EAR_L EAR_R
1 2 3
P3 PHONE JACK-3P
1 2 3
P1 DC JACK
1 2 3 4 5 6 7
P2 PHONE JACK-7P
1 2 3 4 5 6 7 8
CON1
1 2 3 4 5 6 7 8
CON2
L_IN
R_IN
R_IN L_IN
LED_1
MUTE
L_IN1 R_IN1 R_OUT1 L_OUT1 PGND
3 2
1
U3A JRC4558
4 8
U3C
JRC4558
12 R40
12k
12
R39 10K
12
R38 22K
C40 10UF 5
6
7
U3B JRC4558
12 R43
12k
1 2
R42 10k
12
R41 22k
C41 10UF
1/2_VCC
1/2_VCC
C42 104
R11 12K
C7 105
R4 22k R3 12K
C11 105
R5 22K
Main Board Jack Board
1/2_VCC
2
1
3
5
4
6
SW1 POWER ON/OFF
R6 NC
1
2 3
Q1 NC
D1 NC
C12 NC
1 2 3
CON3 CON3PIN
R17 1K
R22 22K
R12 1K
R18 22K
4 8
U1C
JRC4558
C6 102
C25 105
R27 22K
C8 102
C43 105
R9 5K6
B1 600R B2 600R
C44 104
C46 102
C45 102
C47 102
C48 102
R31 10K
PCB LAYOUT
PCB LAYOUT
Eahphone Out
Audio IN
Audio IN (Cable)
C49 104
Service Manual
4.4 Electric Schematic
- 16

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- 17
Repair Material List
SP-700 Repair Material List
Part Number Spec Position
00000186 ADAPTER 1
02600419 AUDIO CABLE CON3
11800053 E/C220UF/25V ±20% C27
11800060 E/C 2200U/25V 

20% C14
04900066 G-LED3ĭ/5-7mA LED1
02100759 LED Cable LED1
00800809 Speaker 3*4ȍ10W 2
13700163 VR A100K*2 L=15 16ĭPCB TYPE VR1/VR2
13700045 VR B10K*2 L=15 16ĭPCB TYPE

3dB VR3
06100268 Power/2P2T/H=12.5/PBS-22H01T25 SW1
05100179 G-ICTFA9843J U2
06200020 G-EARPHONE JACK3.5ĭD=7ĭL=3 H=6.5/Ⴟ
ႿႿ
ႿB/7P P2
06200086 G-EARPHONE JACK3.5ĭD=7ĭL=3 H=6.5/Ⴟ
ႿႿ
ႿB/3P P3
05100162 ICNJM4558D SO-8 SMD JRC U1/U3
06601779 AMP PCBA 1