HP E24m Maintenance and Service Guide - Page 27

Function test After repair, be sure to confirm that all functions are working. Table 4-1: Function test Test item Operating description Function test sHtDiMteImtest Confirm whether image displays and sound Tool used Computer or DVD player HDMI test After reCpploaaniyrsf,irbcmeorwsruehrceettlhytoeorcniomtnhafeigrmme odthnisaitptolar.lylsfuanncdtiosnosunadre workinCgo. mputer or DVD player DP test pCloanysfircmorwrehcettlhyeornimthaegme odnisitpolar.ys and sound Computer or DVD player DP test plays correctly on the monitor. Confirm whether image displays and sound Computer or DVD player TUabSlBe-4C-1te:sFtunction pCteloasnytsfircmorwrehcettlhyeornimthaegme odnisitpolar.ys and sound Computer or USB-C player Audio test plays correctly on the monitor Change volume and balance to confirm whether Speaker Audio test vCohluamngeeisvoslmumooethanadndbalolaundceentooucgohn.firm whether Speaker volume is smooth and loud enough. Support and troubleshooting The following table lists possible problems, the possible cause or each problem, and the recommended solutions. Table 4-2: Solving common problems Problem Possible cause Screen is blank or video is flashing. Power cord is disconnected. Monitor is off. Video cable is improperly connected. System is in Auto-Sleep Mode. Video card is incompatible. Solution Connect the power cord. Power the power button. NOTE: If pressing the Power button has no effect, press and hold the power button for 10 seconds to disable the Power button lockout feature. Connect the video cable properly. Press any key on the keyboard or move the mouse to inactivate the screen blanking utility. Open the OSD menu and select the Input menu. Set Auto-Switch Input to Off and manually select the input or replace the video card or connect the video cable to one of the 25