Acer AL2017 Service Manual

Also see for AL2017: Quick start guide Specifications User guide Service guide

Acer AL2017 Service Manual Manual pdf 23 page image

Acer Service Manual2. No rasterNo backlightLED lamp is OKYesNo power supply toinverterNoYesNoIs there 16V voltage onpin3,4 of T501,T502 U501, U502 fail No Check powersupplyReplace U501,U502YesYesIs there PWM signal onpin4 of IC501 No Check I/F BDYesIs there High level voltageon pin10 of IC501 No Check I/F BDVsense voltage is 2.9VYesYes Lamp connectoropenedAre there PWM signal on pin1,pin15 of IC501NoNo IC501 failurePin 5 of IC501 voltage isLow levelYesFeedback circuitfailureYes Yes Check C524,R528, R533,D507NOPin 3 of IC501 voltage is highlevel voltage Yes IC501 protected Yes Check D505, D511,D512, D513, R520, C520ENDYesCheck the cable that fromI/F BD to P/I BD is okYes22