KYE Systems Corp. Genius SP700 Manuale utente

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ʳʳʳ

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

Main Boar

R S

eake

Ada

eake

Return defective unit

Analysis rooting

Cause

Confirming the

inferior issue(Test)

Replacement service

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

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

Root cause

Counter measure

Problem Analysis A

No out

PCBA

nal cable faile

lace Audio cable

transducer faile

lace transduce

JACK boar

Main boar

Repair the

chapped position

Ear

hone JAC

faile

(

)

faile

lace ear

hone Jac

lace IC

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c.Systemdown

ʳʳ

d. The volume control is random

ʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳ ʳ

ʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳ

ʳʳʳʳʳʳʳ ʳʳʳʳʳʳʳ

ʳʳʳ

e. Noise and distortion

Problem analysis

Root cause

Countermeasure

Volume control is rando

Main board

Defected VR (potentiometer )

Replace VR(VR1/VR2)

Problem anal

sis

Root cause

Countermeasure

Problem anal

sis

Root cause

Countermeasure

stem down

Cable

Ada

Replace adapter

Main boar

lifie

nDC Jack broken

The ground lead of power

IC(U2) is failed

Replace switch

Power suppl

Replace IC(U2) Replace DC jack

Noise and distortion

transduce

Defected Transduce

Replace transducer

Main boar

PCBA

Defected IC

(

)

Amplifie

Replace PCBA Replace IC(U2)

Capacitor and

resistor are defective

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f. No output on earphone

g. Other issue

!!!!

!!!

No output (earphone)

Audio Cable

en circuit

(

cable

is faile

)

Ear

hone Jack faile

Replace earphone jack

Replace Cable

Jack board

Problem anal

sis

Root cause

Countermeasure

Problem anal

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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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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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

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)

picture

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)

picture

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2.4 Change LED step:ʳʳʳʳ

ʳʳʳʳʳʳʳʳ

ʳʳʳʳ

ʳʳʳ

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

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picture

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