Common Problems and Solutions
Table 60 lists some of the common problems you may encounter while using your CMX58886CX cpuModule, and suggests possible solutions.
If you are having problems with your cpuModule, review this table before contacting RTD Technical Support.
| Table 60 | Troubleshooting | ||
|
|
| ||
Problem | Cause | Solution | ||
|
|
| ||
cpuModule | no power or wrong polarity | • check for correct power on PC/104 bus connectors | ||
“will not boot” |
|
|
| |
incorrect Setup | • reboot and press Delete to run Setup | |||
| ||||
|
|
| ||
| defective or misconnected | • check for misaligned bus connectors | ||
| device on bus | • remove other cards from stack | ||
|
|
| ||
| cable connected backwards | • verify all cables are connected correctly | ||
|
|
| ||
| SSD installed backwards | • check for an SSD memory installed in socket backwards | ||
|
|
| ||
cpuModule keeps rebooting | problem with power supply | • check for correct power on PC/104 bus connector | ||
| reset switch is on | • check that the reset button is not pushed in | ||
| watchdog timer is not being | • verify that the watchdog timer is being refreshed before it times | ||
| serviced quickly enough |
| out | |
|
|
| ||
cpuModule will not boot | device not bootable | • use sys command on drive or reformat the device using | ||
from particular drive or |
|
| the /s switch | |
device |
|
|
| |
device not formatted | • format drive using /s switch | |||
| ||||
|
|
| ||
| power not connected to | • connect power cable to floppy or hard drive | ||
| boot drive |
|
| |
|
|
| ||
erratic operation | excessive bus loading | • reduce number of PC/104 modules in stack | ||
|
| • remove termination components from bus signals | ||
|
| • remove any power supply bus terminations | ||
|
|
| ||
| power supply noise | • examine power supply output with oscilloscope | ||
|
| • glitches below 4.75 VDC will trigger a reset | ||
|
| • | add bypass caps | |
|
|
| ||
| power supply limiting | • examine power supply output with oscilloscope | ||
|
| • check for voltage drop below 4.75 VDC when hard drive or floppy | ||
|
|
| drive starts | |
|
| • | add bypass caps | |
|
|
| ||
| insufficient cabling through | • increase wire gauge to connector | ||
| power connector | • power through bus connectors | ||
|
|
| ||
| temperature too high | • add fan, processor heatsink, or other cooling device(s) | ||
|
| • See Thermal Management on page 65 | ||
|
|
| ||
| memory address conflict | • check for two hardware devices (e.g. Ethernet, SSD, Arcnet, | ||
|
|
| PCMCIA) trying to use the same memory address | |
|
| • check for two software devices (e.g. EMM386, PCMCIA drivers, | ||
|
|
| etc.) trying to use the same memory addresses | |
|
| • check for hardware and software devices trying to use the same | ||
|
|
| memory address | |
|
| • check for an address range shadowed (see Advanced Setup screen) | ||
|
|
| while in use by another hardware or software device | |
|
|
| ||
| I/O address conflict | • check for another module trying to use I/O addresses reserved for | ||
|
|
| the cpuModule between 010h and 01Fh | |
• check for two modules (e.g. dataModules, PCMCIA cards, Ethernet) trying to use the same I/O addresses
86 CMX58886CX cpuModule |