Samsung sd606 Troubleshooting
3-3.Troubleshooting
Powerandinitialststecheck
CheckCN1-2 +5V, +12V
afterpowercableconnection
Y
X501,X301,X201
oscillate
Y
IC30119pinchangefrom
OV¡æ5V?
Y
IC201 pinchange
fromOVto5V?
(Checkafterconnectingonlypowercablewith
outI/Fcableconnection)
N
N
N
N
Checkpowershoot,powersupply
IC501,IC301,IC201powerinputare
normal,replaceX501,X301,X201
IC3016pinchange
fromOVto5V
IC301powerinput
Y
PICK-UPmovesinatpoweron
aftermovingout?
Y
TRAYopen/closerun?
Y
LaserdiodeisON?
Y
FOCUSUP/DOWNrun?
Y
N
N
N
N
See¡®SLEDoperationerrow'
See¡®NoTRAYopen/close¡¯
See¡®NoLaserdiodeon¡¯
See¡®SERVOoperationerrow¡¯
A
SamsungElectronics
3-9
Toubleshooting
A
Y
<ForDVD>
Focuslockruns?
IC201 pin"OV"
Y
Diserotates?
<ForCD>
Y
Temporarystopstate?
(TEsignalcheck)
N
See'SERVOoperationerror'
N
See'Discrotationerror'
N
See'SERVOoperationerror'
2V
2.1V.
<TEsignalattrackjump>
(TemporaryhalfstateforDVD)
3-10
SamsungElectronics
Notrayopen/close
Toubleshooting
PinbetweenSW701andR311
OVatpressingSW701
Y
OVsigalisinputtedintoIC301
4pinatpressingSW701
Y
OV,5V switchingsignalof MSWI3
pinis inputtedintoIC30139pin?
Y
OV,5Vswitchingsignalof MSWI1
pinis inputtedintoIC30140pin?
Y
N
CheckSW701slodering
N
Checkpatterndisconnectionfrom
R311toIC30141pin
N
CheckSW702solderingandpatten
N
CheckSW702sloderingandpatten
3VcomefromIC40114,15pin
onthebasisof2.1V
atpressingOpen/Closekey?
Y
Connectionsoldering
andloadingmotorisnormal?
Y
N
N
CheckR410,R409,R405,
R404soldering,
andIfstillnotoperated,
replaceIC401.
Checksolderingandwire
connectionstate
Open/closerunsnormally.
SamsungElectronics
3-11
Troubleshooting
Nolaserdiodeon
Focusup/downruns?
<ForCDfamily>
Y<ForDVD>
PowerandGNDterminalare
normalofIC101?
(5V:21,27,46,51,52pin
OV:1,55,66,76pin)
Y
IC10160pinis
about2.9V?
Y
N
Checkpowerandinitialstate
B
N
N
CheckpowerandGNDpattem
CheckR106soldering
Voltagedifferenceof
R103isapprox.800mV?
Y
IC10159pinvoltageis
approx.20mV?
Y
ReplacePick-up.
N
CheckR103,Q101,L102soldering
N
CheckCN101soldering
3-12
SamsungElectronics
Troubleshooting
PowerandGNDterminal
IC101arenormal?
Y
IC1012pinisabout2.8V?
Y
Voltagedifferencebetweenboth
stagesofR116isapprox.800mV?
Y
N
Checkpowerpattemconnection
N
N
CheckRI15soldering
CheckR115,Q102,L103
soldering
IC1013pinvoltageis
approx.20mV?
Y
ReplacePick-up.
N
CheckR101soldering
SamsungElectronics
3-13
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