National Instruments cRIO-904 Series User Manual

National Instruments cRIO-904 Series User Manual Manual pdf 40 page image

Figure 33. cRIO-904x Desktop Mounting Side Dimensions132.8 mm (5.23 in.)127.2 mm(5.01 in.)BIOS ConfigurationResetting the System CMOS and BIOS SettingsThe cRIO-904x BIOS configuration information is stored in a nonvolatile memory locationthat does not require a battery to preserve the settings. Additionally, the BIOS optimizes boottime by saving specific system information to memory backed up by a battery (CMOS).Complete the following steps to reset the CMOS and reset the BIOS settings to factory defaultvalues.1. Disconnect power from the cRIO-904x.2. Press the CMOS reset button and hold it for 1 second.3. Reconnect power to the cRIO-904x.The BIOS Reset Detected warning message appears onscreen.Note If the CMOS battery is dead, the CMOS reset button will not work.Power-On Self Test Warning MessagesThe cRIO-904x POST displays warning messages for specific issues onscreen. You can useMAX to enable Console Out to send these warning messages through the RS-232 serial port.The POST can display the following warning messages:• BIOS Reset Detected—This warning is displayed when the CMOS Reset button has beenpushed. This warning indicates that the BIOS settings have the default values.• CMOS Battery Is Dead—This warning is displayed when the CMOS battery is dead andmust be replaced. The BIOS settings are preserved even when the CMOS battery is dead,but the system will boot very slowly because the BIOS cannot optimize boot time bysaving specific system information to CMOS.40 | ni.com | cRIO-904x User Manual