Akai DV-P4930KDSM User manual

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
4P
-
USB
Port
MEMORY
Software

POWERBOARD
No
No
NoYes
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
Yes
No Yes
Replacedefective
material InspectPowersupply
Fuseorfilterdefective
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AUDIOOUTPUT
No
No
No
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
Ok
Ok
Ok
KARAOKE
NoDisc
Whetherlens is ok
Check+5Vpowersupply
circuit
Check24Pcablesandtheplug
forconnection workingornot
CheckSA5888
Sunplus8202Ddefective
CleanLens orchangelens
Change24Ppaircables
SA5888 defective
No
No
KRKwithoutsound
IfhaveKRKsignal,check
CE2826(17)(18)with
oscillographhavewaveornot
IfhaveKRKsignal,,check
CE2826(1)(7)withoscillograph
havewaveornot
CheckMicworkingornot
CE2826Defective
Circuitdefective
Capacitance orresistance
defective
YES
YES
YES
No
ChangeMIC output
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SDCARD
Yes
Yes
Yes
Yes
USBFUNCTION
Yes
Yes
Memorynofunction
CheckSDcard
connection
CheckF1inductance
with3.3Vpower
supplyornot
InspectQ3,Q4,A5audion
and capacitanceand
resistance
Check24Pcablesor
cablesplugworkingor
not
Plugdefectiveormemory
defective
Checkpowersupplycircuit
Replacedefectivecomponent
Cables orplug defective
No
No
No
No
USB no function
CheckUSBcard
connection
CheckEC3with5V
powersupplyornot
Check4Pcablesorcables
plugworkingornot
PlugdefectiveorUSBdefective
C
heckpowersupplycircuit
Cables orplug defective
No
No
No
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VIDEO
No
No
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
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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