Quatech DS-100 user manual Troubleshooting, Computer will not boot up

9. Troubleshooting

Listed here are some common problems and frequent causes of those problems. Suggestions for corrective action are given. If the information here does not provide a solution, contact Quatech Customer Service for technical support.

Any unauthorized repairs or modifications will void the DS-100's warranty.

Computer will not boot up.

1.Is the DS-100 properly inserted? Remove the card and try again. Perhaps try a different expansion slot.

2.Is the base address correctly set? Check for address conflicts with other devices in the system. Remember that each port on the DS-100 requires 8 bytes of I/O space. Set a different address if necessary.

3.The DS-100 may be defective. Contact Quatech Customer Service for instructions.

Cannot communicate with other equipment.

1.Are the cable connections correct? Are the cables securely attached?

2.Are the base address and interrupt level (IRQ) correctly set? Check for address and IRQ conflicts with other devices in the system. Change the settings if necessary.

3.If you are trying to communicate with a DTE, a null-modem cable may be required.

4.If possible, use a loopback connector to test the port. This connector needs to connect the following sets of signals on a D-25 connector:

TxD and RxD (pins 2 and 3)

RTS and CTS (pins 4 and 5)

DCD, DTR, DSR, and RI (pins 8, 20, 6 and 22)

Sample Code and a detailed description of the DS-100's UARTs is available on Quatech's BBS (330)434-2481.

DS-100 User’s Manual 8-1