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8. 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 ES-100D's
warranty.
Computer will not boot up.
1. Is the ES-100D 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 the ES-100D requires 64 bytes of
I/O space. Set a different address if necessary.
3. The ES-100D 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)
Quatech ES-100D User's Manual 25