Toshiba TDP-SW20 Service Manual page 54

No standby LED
Check the Power cord and AC power outlet.
Check the Main power switch.
Check the US-622 and both-ended voltage (same as AC IN)
(P100:Thermal guard switch).
Check the Key Board cable has broken or not.
Check the connect cables inside the Unit.
Does the projector
power up ?
No
Check the voltage of PJ105 (Power IN) at Main board
and also check the voltage of CN201(Power Out) at Power Supply
when it removes the cable from Main board.
Is the power supply
outputting ?
Yes
Replace the Main board
Yes
Problem resolved.
No
Replace the power supply
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