76 CMA24BT cpuModule
BDM-610000087 Rev A
System Recovery
Reset Button Recovery
The CMA24BT provides several methods for recovering from an incorrectly configured system. In order
to enter the recovery mode, follow the steps below:
1. Remove power from the system, including standby power.
2. Press and hold the reset button attached to the Utility Port 2.0 connector.
3. Apply power to the system while continuing to hold the reset button.
4. Wait the amount of time shown in Table 51 for the desired recovery mode.
5. Release the reset button, allowing the system to boot.
Load Default BIOS Settings
Loading BIOS defaults allows recovery from an incorrectly configured display device, incorrect boot
options, and many other incorrect settings. It is also a good starting point when making BIOS changes. After
restoring defaults, the BIOS settings should be reviewed and modified as needed.
The default BIOS can be restored either by using Reset Button Recovery, or the “Load RTD Defaults”
option in the BIOS.
Serial Power-On-Self-Test (POST) Code Output
The POST Codes represent a series of events that take place in a system during the Power On Self Test. If
the POST fails, the system will not boot as expected. Knowing which POST code the failure occurred may
help system debug.
This recovery mode configures serial port connector
CN7
as single RS-232, and sends the POST codes on
the transmit pin. The port settings are 115kbps, 8 bits, no parity, one stop bit. When using this recovery
mode, the POST codes can be logged on another computer running terminal software. Contact RTD
technical support for more details.
Table 51 Reset Button Recovery Modes
Hold Time
1
1. To assist with timing while the reset button is pushed, the LED will blink OFF at 5 second
intervals.
Mode
0-4 seconds
No recovery mode. System will stay in reset while button is
pressed.
4-8 seconds
Load Default BIOS Settings
8-12
seconds
Serial POST Code Output
Note
POST Codes over the serial port (
CN7
) may also be enabled by installing
JP5
and
JP6
prior to power cycling the cpuModule. For more information, see
.
Summary of Contents for cpuModules CMA24BT
Page 3: ...Accessing the Analog World www rtd com ISO9001 and AS9100 CMA24BT cpuModules...
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Page 66: ...56 CMA24BT cpuModule BDM 610000087 Rev A...
Page 87: ...BDM 610000087 Rev A Chapter 4 Using the cpuModule 77...
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Page 94: ...84 CMA24BT cpuModule BDM 610000087 Rev A Figure 11 CMA24BTQ1910 Heatsink Edge near PCIe 104...
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Page 111: ...BDM 610000087 Rev A Appendix C IDAN Dimensions and Pinout 101...
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