Alpha Microsystems AM-6000 Owner's Manual page 75

Troubleshooting Procedures
4. If there is a problem with the terminal cables, correct the problem and reset the computer. If it
comes up normally and the terminals seem to work all right, your problem is fixed.
D. Disconnect all terminals except the terminal you are testing.
E. Reset the computer. If it comes up normally, and there is no problem with the terminal, you know
one of the other terminals may be the problem.
F. Connect another terminal and go to Step D again. Repeat until you find the problem terminal.
G. Check the terminal option settings against the terminal manufacturer's manual. Check for:
1. Correct baud rate.
Your computer as shipped from Alpha Micro assumes the terminal it boots on is set for
19200 baud.
2. Set for full duplex (not half duplex) operation.
3. Set for remote (not local) operation.
4. Set for a data word length of 8 data bits.
5. Set for no parity.
6. Set for 2 stop bits if the terminal works at 110 baud; 1 stop bit if it works at any other baud rate.
7. Set for conversational (not block) mode.
8. For a printer, make sure it is on-line.
If the option settings are wrong, correct them and reset the computer. If it is up and running and the
terminal works all right, your problem is fixed.
H. If you have a known good terminal similar enough to the problem terminal to work in its place,
substitute it for the questionable one and reset the computer.
If the computer is up and running and the terminal works all right, you know the problem lies with
the terminal, not the terminal cable. Put the original terminal back on and proceed to Step J.
If the problem is still there with the new terminal, put the original terminal back on and reset the
computer. Continue with Step I.
I. Check the terminal cable. If you suspect it might be damaged, try substituting another cable and
resetting the computer. If it comes up normally and the terminal works, you can assume the original
cable is bad.
Remove the cable hoods from both ends of the bad cable and look for broken wires. If you feel
comfortable doing so, review the cable constructions in Appendix A to see if there are any errors in
cable construction.
If there is a problem with the cable, repair it or call your VAR for help. If you have repaired the
cable, try hooking the terminal up again and performing "Procedure #3: Powerup/Reset." If the
computer comes up normally and the terminal works all right, you have fixed the problem.
J. If the terminal has a self test mode, use it to determine the problem with the terminal. Use the
manual provided by the terminal manufacturer for instructions on interpreting the terminal self test.
AM-6000 Computer Owner's Manual, Rev. 00
Page 7-7