Appendix E Maintenance And Troubleshooting - Advantech PCA-6143P User Manual

Will not boot up
Make sure that all cards on the passive backplane are firmly seated
in their slots. Clean the pins on the cards and slot connectors on
the passive backplane if necessary.
Check the DC output of the power supply. All required voltages
(+5 V , + 12 V, etc.) should be present. The +5 V output should be
within the range 4.75 V to 5.25 V .
Make sure that the DRAM modules are correctly inserted into their
sockets and have the correct access time (usually 80 nsec or less)
Check that the CMOS is correctly set up. Check the HDD, FDD,
wait states, error hold, etc.
Make sure the add-on cards are OK. Remove or change add-on
cards and test again.
Ensure that the math co-processor is properly inserted in its socket.
Check the connections between the video card and monitor. Check
display adjustments, especially when using LCD displays. The
system may be booting up, but not displaying on the screen.
If you are booting from a floppy disk drive, make sure the floppy
is bootable. If booting from a hard drive, make sure that it is pro-
perly formatted for your DOS version. New disks must first be
partitioned (with FDISK) and formatted with FORMAT).
Check HDD and FDD cable connections. Make sure that the
floppy drive is designated drive A: (the end connector on the FDD
cable), and that the hard disk is designated drive C: (the end
connector on the HDD cable).
Check connections for the reset, keylock and power LED wires.
Remove completely or adjust the value of the terminating resistor
on your backplane.

Appendix E Maintenance and troubleshooting 69