Testing The Board And Host Computer; Testing The Accessory Slot And I/O Connections - Keithley DAC-02 User Manual

Testing the Board and Host Computer

To isolate the problem to the DAC-02 board or to the host computer,
perform the following steps:
1. Turn the power to the host computer OFF, and remove power
connections to the computer.
Caution:
your board and/or computer.
2. While keeping connections to any accessory intact, unplug the
accessory connector or cable from the DAC-02 board.
3. Remove the DAC-02 board from the computer and visually check for
damage. If a board is obviously damaged, refer to "Technical
Support" on page 8-5 for information on returning the board.
4. With the DAC-02 board out of the computer, check the computer for
proper operation. Power up the computer and perform any necessary
diagnostics.
At this point, if you have another DAC-02 board that you know is
functional, you can test the slot and I/O connections using the instructions
in the next section. If you do not have another board, refer to the
instructions on page 8-5 before calling Keithley Technical Support.

Testing the Accessory Slot and I/O Connections

To test the computer accessory slot and the I/O connections, perform the
following steps:
1. Remove computer power again, and install a DAC-02 board that you
know is functional. Do not make any I/O connections.
2. Turn computer power ON and check operation with the functional
board in place. This test checks the computer accessory slot. If you
were using more than one DAC-02 board when the problem occurred,
use the functional board to test the other slot, as well.
8-4
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Removing a board with the power ON can cause damage to
Troubleshooting