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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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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! 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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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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.
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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.
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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