OSS OSS-PCIE-4UV-5-1, User Manual

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One Stop Systems
OSS-PCIe4-4UV-5 76
12 Troubleshooting
12.1 Locating the Problem
If you are having trouble with the One Stop Systems expansion system, first verify that all cards and cables are seated properly. Be sure you
followed the instructions in earlier sections of this Service Manual. Always remember to power
On and Off correctly when rechecking your
installation. If you are still having problems, try these troubleshooting steps:

My Computer Can’t Find the PCIe Expansion System

My PCIe Card Doesn’t Work

My system hangs beyond a certain number of add-in cards
12.2 My Computer Cannot Find the PCIe Expansion System
If the 4U Value expansion system is not being detected or recognized by the computer operating system (via Windows Device Manager, Linux
–vtt output, or Apple System Profiler ) do the following
1. You will need to turn off your computer (and the expansion unit) and then reseat all link cables to ensure you have everything
connected correctly
2. Verify that the required LEDs on the back of the Target and Host carfare lit as explained in Chapter 4.
3. Verify the Target card in the correct designated slot and the Host card are properly inserted into the host computer x 16 slot. Make
sure the switches settings on both cards are set correctly.

Try moving the Host card to a different PCIe slot (if a slot is available).

Try another host computer.

If the expansion system is still not visible after trying all of the above steps, try replacing the Link cables, and both interface cards.

If you are still having problem, you may need to send your unit for service.
12.3 My Computer Hangs During Power Up
If your computer “hangs” while being turned on and you cannot even start, follow the following steps to try to fix this problem:
1. Shut off the computer (first) and then the One Stop Systems expansion system and verify that all cards and cables are connected and
seated correctly.
2. If it still hangs and you have added one or more cards in addition to several PCIe cards, ensure that you have not exceeded the
power capabilities of the expansion system‘s power supply. You can verify the capacity of your power supply by checking the label
on the power supply. If you are not certain about the power consumption of your peripherals, it is best to remove them one by one
(starting with those you suspect of being most “power hungry”) until the system powers up.
3. If you have removed all 3
P
rd
P
Party PCIe cards from the One Stop Systems chassis and it still hangs, try the following:
a. Remove the One Stop Systems PCIe host card from the computer and try booting up without the One Stop Systems
expansion system attached.
b. If it boots up OK without
th
e
One Stop Systems expansion system attached, call One Stop Systems Technical Support.
c. If it still hangs, the problem is in the computer and not with the One Stop Systems expansion system or the 3
rd
Party PCIe
cards.
d. If it booted up OK without any 3
rd
Party PCIe cards installed, try adding only one card and see if it boots up
.
e. If it boots up OK w
i
th one card, shut it down and swap the card. Repeat this until all cards have been tested.
f. If they all test OK, then add the card one at a time until you find the combination that does not work.
g. If you find that one of your card is bad card, replace it, you fixed it!