Octagon 4010, User Manual

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Troubleshooting – 63
CHAPTER 14 TROUBLESHOOTING
If your system is not working properly, check the following items:
No Screen Activity – Checking Serial Communications
for Console
If you do not get the sign–on message after bootup:
1. Make sure all cards except the 4010 card are removed from the
card cage. This ensures that other cards are not interacting
with the 4010 and that a video card is not installed.
2. Install W3[1–2] or remove W3[3–4].
3. The VTC–9F serial cable turns the 4010 Control Card serial
port into a 9–pin AT serial port. Make sure a null modem
adaptor is installed on the other end, and that the assembly is
inserted into the proper serial port on the PC. Make sure the
VTC–9F serial cable is connected to J1 on the Control Card.
4. Make sure your power module pr5V (+/–0.25V).
5. After verifying the above conditions, you can monitor voltage
levels by connecting an oscilloscope between the TxD* line on
J1 (pin 5) and ground. After power–up, you should see a burst
of activity on the oscilloscope screen. The voltage level should
switch b/–8V.
Garbled Screen Activity
If you do get activity on your screen but the message is garbled,
check the following:
1. Remove W3[3–4] to force 9600, N, 8, 1 for COM1.
2. If you are using PC SmartLINK, make sure you have config-
ured the software for 9600 baud and have selected the correct
serial port for communicating with your PC. Refer to the PC
SmartLINK manual for information on selecting the baud rate.
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