== =[https://fit-pc.com/wiki/index.php?title=Airtop3_Troubleshooting_-_I_can%27t_turn_on_the_computer,_it_doesn%27t_wake_up <span style="color:green">I can't turn on the computer, it doesn't wake up </span>] ===
* Please use the ===[[Airtop2 LED behavior description | Airtop3 LED behavior description]] for further diagnosticshttps://fit-pc.com/wiki/index.php?title=Troubleshooting_Airtop3_Symptom:_I_don%27t_have_any_display_output,_there%27s_nothing_on_the_screen <span style="color:green">I don't have any display output, there''LED Diagnostics feature is available only for models configured s nothing on the with FM-AT3 FACE module'''screen</span>] ===
===1[https://fit-pc. Check power supply (PSU)com/wiki/index.php?title===*Make sure the LED on the power brick is lit4K_monitors_are_not_recognized_by_SuSe_Linux_Enterprise_with_discrete_graphics_card.*Make sure the DC cable is <span style="color:green">4K monitors are not damaged and connected properly to the machine.*Make sure the AC cord is properly plugged to both sides (power brick and to the wall).*Try to plug the DC cable to the alternative DC socket on the Airtop3.recognized by SuSE Linux Enterprise with discrete graphics card</span>] ===
===2[https://fit-pc. Check memory (RAM)com/wiki/index.php?title===*Verify diagnostic LED (R) lit Troubleshooting_Airtop3_Symptom:_Missing_Built-in_Audio <span style="backgroundcolor:Greengreen">GreenMissing Built-in Audio (Linux) </span>*.*If lit in <span style] ==="background:yellow">Yellow</span> it means memory initialization has failed.*Verify RAM modules seated correctly and firmly in their respective sockets.*Try to eliminate faulty memory sticks by swapping them with one another.
'''*LED Diagnostics feature is available only for models configured the with FM-AT3 FACE module''' ===3. Check Peripherals (HDD[https:/SSD/USB)===*Unplug peripherals and try to power up with bare minimum, that includes HDDfit-pc.com/SSDwiki/USB devicesindex.*Verify power up without storage. Sometimes damaged drives may cause the overall system to malfunction. php?title===4. Airtop3 BIOS reset===*Power down the PC and unplug the power cable.*Open the service door.*Remove the disks cartridge.*Reset the BIOS by pressing the low profile push button SW1 (RTC_RST).*Mount the disks cartridge and close the door.*Plug the power and power up the PC (either auto-on or pressing power button).[[File:Airtop2-bios-reset.gif]] '''LED-B (BIOS)*''' This LED is Troubleshooting_Airtop3_unexpected_reboot_after_coming_back_from_sleep <span style="backgroundcolor:yellowgreen">Yellow</span> Unexpected reboot of machine after display initialization. If BIOS setup menu is needed, the DEL button is functional coming back from the moment the B-LED is <span style="background:yellow">Yellow<sleep/span>. The B-LED is <span style="background:Green">Greensuspend </span> when the OS takes charge of the system. '''*LED Diagnostics feature is available only for models configured the with FM-AT3 FACE module''' == Airtop3 with Linux starts up with flickering/bad display == * [[Airtop2 running on embedded GPU is flickering/bad display on Linux | Airtop3 running on embedded GPU is flickering/bad display on Linux ]] == I don't have any display output, there's nothing on the screen == ===1. Screen functionality and connectivity===* Make sure both power and display cables are connected firmly on both sides.* Advise the H(Hdmi)/D(Display port) LEDS, <span style="background:Green">Green</span> means the cable is connected to the monitor properly.** Make sure the screen is turned On and is functioning.* The best way to check screen functionality is by connecting to a good known working machine. '''*LED Diagnostics feature is available only for models configured the with FM-AT2 FACE module''' ===2. Validate memory===*Display issues on POST are a common symptom of incorrectly assembled or bad Memory DIMMS*Please refer to [http://fit-pc.com/wiki/index.php/Airtop3_Troubleshooting#2._Check_memory_.28RAM.29 Check memory RAM] to diagnose Memory
[[Category:Airtop3]]
