rtd cpuModules CMA34CR, Руководство пользователя

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78 CMA34CR cpuModule BDM-610000083 Rev L
Common Problems and Solutions
Table 53 lists some of the common problems you may encounter while using your CMA34CR cpuModule, and
suggests possible solutions.
If you are having problems with your cpuModule, review this table before contacting RTD Technical Support.
Table 53 Troubleshooting
Problem Additional Symptoms Possible Cause(s)
cpuModule does not boot
(no video output) LED is red
(in reset) Input power is inadequate. Refer to Chapter 1, Electrical Characteristics .
Verify input voltages are correct. If power is supplied via CN3 , check for
cabling issues.
Malfunctioning peripheral card. Remove all peripheral cards from the
system.
LED is yellow
(in standby) cpuModule is in “Soft Off” due to operating system shutdown. Press
power button to wake.
ATX power supply is not turning on. Check jumpers on power supply.
Verify PSON# signal.
LED is cyan
(bus stacking error) See Chapter 3, PCIe/104 Type 2 Compatibility
LED is green
(normal operation) cpuModule may be booted, but video is not connected properly.
Attach a keyboard and verify the operation of the Num Lock and Caps
Lock LEDs. If they respond as expected, the cpuModule is booted.
Check the video cable connections.
Video output may have been disabled in the BIOS. Try loading BIOS
defaults per Chapter 4,
System Recovery .
If a PCI device is installed, the slot selection switch/jumpers may not be
set correctly.
Peripheral card may be interfering with boot sequence. Remove all
peripheral cards from the system.
cpuModule reboots
unexpectedly cpuModule is running
Windows By default, Windows will automatically reboot when a Bugcheck (Blue
Screen) is triggered. Disable this feature in the Control Panel. This will
allow you to see the error and identify the root cause.
cpuModule is powered via
Auxiliary Power Connector
(
CN3 )
Power cabling issues. Verify all pins on CN3 are reliably connected with
proper gauge wires.
Power supply noise or current limiting. Check power pins with an
oscilloscope and verify they remain in range.
Power supply may not respond quickly enough to changes in power
consumption. Switch to a different power supply (a PCI Express power
supply is recommended)
Peripheral card(s) installed Peripheral card(s) may be overloading the power supply. Reduce the
system to just the cpuModule and power supply and see if the problem
re-appears. (Note that
CN3 is intended for powering the cpuModule
only.)
cpuModule does not boot
to USB device USB device has a high power
draw (e.g. DVD or hard drive) Some USB devices are not fully compliant and draw too much current.
Consider switching to a self-powered USB device with its own AC/DC
power supply.
Date/time not saved when
system is off No RTC battery A battery must be attached to the Utility Port 2.0 connector ( CN5 ) to
maintain date/time when main power is removed. For a list of alternate
battery inputs, refer to
Real Time Clock Control —page 62.
System performance lower
than expected LED is white cpuModule is overheating and the processor is throttling. Increase the
cooling (more airflow, larger heatsink, etc.).