Troubleshooting Block Diagram1．Panel doesn’t light up.YesRedNoBlueNoYesNoNoYesSupply with power,check if red indicatorlights up in STANDBYstate?Check backlightboard.Check STANDBYcircuits on powerboard.Press key POWERon remote control orthe unit, checkindicator.Check if level ofX101-PIN1 on mainboard is high?Check if level ofX101-PIN5 on mainboard is high?Check powerboard.Check if 5V is suppliedto X101-PIN3 ?Check powercontrol circuits onmain board.Check powercontrol circuits onmain board.

Sanyo 1 682 351 01 Service Manual