cmd6686gx manual - RTD Embedded Technologies, Inc.

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
power supply limiting
temperature too high
examine power supply output with oscilloscope;
glitches below 4.75Vdc will trigger
a reset; add bypass caps
examine power supply output with oscilloscope;
check for voltage drop below 4.75V
when hard drive or floppy drive starts; add
bypass caps
add fan, processor heatsink, or other cooling
device(s)
See 686GX233 Thermal Management.
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
keyboard does not work
Windows 3.1x installation
program hangs
keyboard interface damaged
by misconnection
wrong keyboard type
smartdrive enabled
check for two modules (e.g. dataModules,
PCMCIA cards, Ethernet) trying to use the
same I/O addresses
check if keyboard LEDs light
verify keyboard is an 'AT' type or switch to
'AT' mode
remove smartdrive command from config.sys,
reboot, run install program
floppy drive light always on cable misconnected check for floppy drive cable connected
backwards
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