4.Troubleshooting
4.1.2.CheckpointsbyErrorMode
■NoPower
Symptom
•TheLEDsonthefrontpaneldonotworkwhenconnectingthepowercord.
•TheSMPSrelaydoesnotworkwhenconnectingthepowercord.
•Theunitappearstobedead.
MajorChecklist
TheSMPSrelayortheLEDsonthefrontpaneldoesnotworkwhenconnectingthepowercordif
thecablesareimproperlyconnectedortheMainBoardorSMPSisnotfunctioning.Inthiscase,
checkthefollowing:
•Checktheinternalcableconnectionstatusinsidetheunit.
•Checkthefusesofeachpart.
•ChecktheoutputvoltagesoftheSMPS.
•ReplacetheMainBoard.
Diagnostics
Ye s
Ye s
Ye s
Ye s
P owe r indica tor LED is on?
Check a connetion powe r code .
Re place the Main Boa rd.
Conne ct the cable be twe e n
CN801 a nd CN201 connector.
Are the S MP S CN801 and Main CN201
conne cted?
Re place Fuse . (F801S )
Is th e Fuse (F8 01S) of the SMP S P owe r
Input P a rt blown?
Re place the SMPS.
SMP S CN801
PIN2 : S TB5V
PIN1_P S ON : Che ck to s ee if it is 0V
No
No
No
No
4-2Copyright©1995-2011SAMSUNG.Allrightsreserved.
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