Advantech PCA-6143P User Manual page 70

Check for and remove viruses. The boot sector and partition table
on your HDD may be damaged.
CMOS setup loss
Make sure that your application software does not write to CMOS
data addresses.
System hangs after working for a short time (about 20 minutes)
Make sure the power switch is set to correct input range (110 or
220 V ). If the correct range is set, check the quality of the input
AC
power. It should be stable and between 90 and 120/200 and
240 V . PC equipment should not be connected to the end of a
AC
power trunk line. Next, check the output of the power supply. The
+5 V supply should be between 4.75 and 5.25 V
DC
Make sure the temperature of the case is less than 60
necessary, clean the air filter and backplane.
Check that the SIMM DRAM modules have an access time of
80 nsec or less.
Serial Port Failure
Check cable connections between the PC and the remote terminal
equipment. Make sure that the remote terminal equipment is
functioning properly.
Check COM port assignment.
When using standard C, Pascal or BASIC serial port commands,
make sure that either the port's DTR/DSR and RTS/CTS lines are
looped back (shorted together in the connector), or the COM port
70 PCA-6143P User's Manual
.
DC
o o
C (140 F). If