=== HW Revision 1.1 =FITPC4ERR001: Power LED == 1. * ''Power LED'Date''': 28-Apr-2014* '''BugSymptom''': Power (Logo) LED enabled at all power states (S0, S3, S4 and S5), even during SW shut down* '''Applies to revision(s)''': 1.0 to 1.1* '''Cause''': Incorrect LED connection* '''Workaround''': Ignore logo LED indications
* '''Fix''': Fixed in revision 1.2
== FITPC4ERR002: Memory organization ==
* '''Date''': 22-Jul-2014
* '''Symptom''': When single memory module installed on inner slot (P6) it may cause the system not to pass memory initialization
* '''Applies to revision(s)''': 1.0 to 1.1
* '''Cause''': Incorrect SIM slot pin routing
* '''Workaround''': In case single SO-DIMM to be used, it should populate the slot closer to PCB edge (P7)
* '''Fix''': Populate the slot closer to PCB edge (P7)
2. == FITPC4ERR003: RTC Battery ==* ''Memory organization'Date''': 11-Feb-2018* '''BugSymptom''': When single memory module installed fit-PC4 circuit of RTC battery-on inner slot (P6) it may cause -a-wire has reversed polarity. fit-PC4 that is disconnected from power will exhibit the system not following behavior:#Time and date will be reset.#Customized BIOS settings will be reset to pass memory initializationdefault.* '''FixApplies to Serial(s)''': In case single SO1170622-DIMM 21561 to 1180118-00301* '''Cause''': RTC battery-on-wire with incompatible polarity installed in the fit-pc4.* '''Workaround''': The problem can be used, it should populate addressed by replacing the slot closer RTC battery with a battery having compatible polarity to an edge fit-PC4.** Please contact Compulab fit-PC technical support (P7'''support@fit-pc.com +972-4-8290134''') of to address the PCBissue.* '''Fix''': fit-pc4 serials 1180118-00301 and later manufactured with compatible polarity RTC battery-on-wires.
* '''Reference''': [[Fit-PC4 RTC Battery Erratum]]
[[category:fit-PC4]]
[[category:errata notes]]
