Advantech PCA-6143P User Manual page 71

is set to loop back mode. Test using diagnostic software such as
Checklt or QAPlus.
The RS-232 interface relies on good grounding for reliable
operation. Check that all equipment has a good connection to
ground, and that the ground potential is the same at both locations.
Parallel Port Failure
Make sure the printer cable is connected correctly.
Make sure that the printer is on-line and self-tests OK.
Make sure that application software is set correctly.
FDD works incorrectly
Check the connections between the CPU card and FDD.
Clean the magnetic head of the FDD. Make sure you are using
diskettes of the proper capacity and format.
Check that the FDD type is correctly set in CMOS.
Reset the BIOS to the default setting and try again.
Make sure the super I/O configuration is setup correctly.
HDD works incorrectly
Check cable connections. Check that the master/slave jumpers are
properly set. The boot drive should be the master.
Make sure the HDD type is correctly set in CMOS. Reset system
setup to BIOS default settings and try again.
Check for and remove viruses. The boot sector and partition table
on your HDD may be damaged.
Appendix E Maintenance and troubleshooting 71