HP Engage 15t Maintenance and Service Guide - Page 21

Function test After repair, be sure to confirm that all functions are working. Table 4-1: Function test TFeeusntcittieomn test Oppeerraattininggddesecsrcipritpiotnion ToTooloul suesded sUt SitBemtest HDMI test After repCaior,nbfeirsmurewthoecthonerfirimmatgheatdailsl pfulanycstioannsdasroeuwnodrkpinlagy. s Computer or DVD Ccoornrfeircmtlywohnetthheer immoagneitdoirsp. lays and sound plays correctly on plaCyoemr puter or DVD player DP test tChoenmfiornmitowr.hether image displays and sound plays Computer or DVD DP test Ccoornrfeircmtlywohnetthheer immoagneitdoirsp. lays and sound plays correctly on plaCyoemr puter or DVD player Table 4-1: Function test the monitor. Support and troubleshooting Audio test Change volume and balance to confirm whether volume is smooth and loud enough. Speaker The following table lists possible problems, the possible cause or each problem, and the recommended solutions. Table 3-1 Common issues and solutions Issues Possible cause Solution Screen is blank or video is blinking. Power cord is disconnected. Monitor is off. Connect the power cord. Press the monitor power button. Video cable is improperly connected. NOTE: If pressing the power button has no effect, press and hold the power button for 10 sec to disable the Power Button Lockout feature. Connect the video cable properly. For more information, see Connecting the cables on page 8. System is in Auto-Sleep Mode. Press any key on the keyboard or move the mouse to inactivate the screen blanking utility. Video card is incompatible. Replace the video card or connect the video cable to one of the computer's on-board video sources. Image appears blurred, indistinct, or too dark. Brightness setting is too low. Open the OSD menu, and select Brightness to adjust the brightness scale as needed. "Check Video Cable" is displayed on the screen. Monitor video cable is disconnected. "Input Signal Out of Range" is displayed on screen. Video resolution and/or refresh rate are set higher than the monitor supports. Connect the appropriate video signal cable between the computer and monitor. Be sure that the computer power is off while connecting the video cable. Change the settings to a supported setting (see Preset display resolutions on page 17). The monitor does not enter a low-power sleep state. The monitor's power saving control is disabled. Open the OSD menu and select Power, select Auto-Sleep Mode, and then set auto-sleep to On. "OSD Lockout" is displayed. The monitor's OSD Lockout function is enabled. Press and hold the Menu button for 10 seconds to disable the OSD Lockout function. "Power Button Lockout" is The monitor's Power Button Lockout displayed. feature is enabled. Press and hold the Power button for 10 seconds to unlock the power button function. 19