Akai DV-P4930KDSM Manuale utente

SERVICE MANUAL

Model:

DVP4930KDSM

DVD PLAYER

www.akai.ru

AKAIDV-P4930KDSM

MPEGBOARD

Laser,,

Photoelectricity

Connection

Powerconnection

DV+5V+/-12V

Centralprocessingunit

Sunplus

8202D

Fouseloop

principalaxis

Focus,principal

axisdrive,

serv,SA5888

SA5888

videofrequency

signalfrom

SPHE8202

5.1Audiosignal

fromAudioD/A

(R.L.

SR.SL.CN.SWCE

2826

Differentsignalsin

USB

Differentsignalson

memorycard

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REGIONFORPOWERSUPPLY

PANEL

~220V

PowerSwitch

Highvoltage

commute,

filtration

low-tension

alternatingcurrent

Diodecommute

+12V -12V +5V

VIPER22A,

431

LEDdisplay Powerinput5V

CircuitryforLEDdisplay

Buttonon panel DigitalSignalfromMPEGBoard,

DATA, STBCK, BCLCK

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PORTS AND FUNCTIONS ON MPEG BOARD

7P-Connect with

5.1Ch

6P-MPEG board

power supply

24P-different

signals solved by

lens

6P-ports for

principal axis and

servo

5P-ports for

open/close door

4558

CE2826

SUNPLIS8202D

24C02

SA5

888

16P-memo

ry port

6P-panel

USB

Port

MEMORY

Software

POWERBOARD

NoYes

Novoltageoutput

Checkthedifferent

voltageportsworking

ornot.

Test22UF/400V

capacitance,tocheckits

voltageworkingornot

Isit220VPowerboard

havenaturalvoltage?

Inspectpower

cableand power

switch

Somepartscomponentsorfilter

defective

TestVIPER22A5-8tocheckisit

workingornot

Circuitrydefective,please

inspect431,VIPER22A

etc

highfrequency

transformer

defective

Yes

No Yes

Replacedefective

material InspectPowersupply

Fuseorfilterdefective

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AUDIOOUTPUT

Yes

L/RWithoutvoice

Useoscillographcheck

4558(1)(7),checkis

therewaveornot?

Check4558(2)(6)have

waveornot

CheckCE2826 （25 ）

（26）havewaveor

not

CheckCE28263.3V

Voltage

Check

CE2826(5)(6)(7)

havewaveornot

Sunplus8202D

defective

Checkcircuit

4558Defective

CapacitancebetweenCE2826and

4558defective

Checkpowersupply

CE2826Ndefective

Checkpower

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MPEGBOARD

Defective

KARAOKE

NoDisc

Whetherlens is ok

Check+5Vpowersupply

circuit

Check24Pcablesandtheplug

forconnection workingornot

CheckSA5888

Sunplus8202Ddefective

CleanLens orchangelens

Change24Ppaircables

SA5888 defective

KRKwithoutsound

IfhaveKRKsignal,check

CE2826(17)(18)with

oscillographhavewaveornot

IfhaveKRKsignal,,check

CE2826(1)(7)withoscillograph

havewaveornot

CheckMicworkingornot

CE2826Defective

Circuitdefective

Capacitance orresistance

defective

YES

ChangeMIC output

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SDCARD

Yes

USBFUNCTION

Yes

Memorynofunction

CheckSDcard

connection

CheckF1inductance

with3.3Vpower

supplyornot

InspectQ3,Q4,A5audion

and capacitanceand

resistance

Check24Pcablesor

cablesplugworkingor

not

Plugdefectiveormemory

defective

Checkpowersupplycircuit

Replacedefectivecomponent

Cables orplug defective

USB no function

CheckUSBcard

connection

CheckEC3with5V

powersupplyornot

Check4Pcablesorcables

plugworkingornot

PlugdefectiveorUSBdefective

heckpowersupplycircuit

Cables orplug defective

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VIDEO

Novideooutput

CheckQ11with

ithoscillograph,to

checkwhether

havewaveornot

Inspect

Sunplus8202D(193

)tocheckhave

1.2Vvoltageornot

Sunplus8202D

defective

C24,C23,C25 short

circuit, L18opencircuit

Inspectcircuit between

Sunplus8202D(193)toQ11,to

checkwhethershortcircuit or

opencircuit

Yes

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1 Top cabinet

2 Micinput

3 Powercable

4 Decoderboard

5 Decoderboard

6 Bottomboard

7 Rubbercolumn

8 MICBoard accessory

9 Rubbercolumn

10 SanyoLens

11 USBboard

12 Frontpanel

13 CD tray

14 USBport

15 SDport

16 Powerbutton

17 Powerbutton

18 LEDdisplay

19 Powerswitch

20 Bracketoffrontpanel

21 Powerboard

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