Artesyn BajaPPC-750, User Manual

Page: 44 / 215

Troubleshooting 2-17
0002M621-15
• Setting the toggle switch to Reset (R) on the BajaPPC-750 front panel
• Writing a one to bit 23 (SW_LRST) of the Universe chip’s MISC_CTL register
at offset 404
16
resets the Universe and all devices on the local PCI bus (does
not reset other VMEbus devices)
2.6 Troubleshooting
In case of difficulty, use this checklist:
❑
Be sure the board is seated firmly in the card cage.
❑
Be sure the system is not overheating.
❑
Check the power cables and connectors to be certain they are secure.
❑
If you are using the BajaPPC-750 monitor, run the power-up diagnostics and
check the results. “Monitor”, Chapter 10 describes the power-up diagnostics.
❑
Check your power supply for proper DC voltages. If possible, use an oscillo-
scope to look for excessive power supply ripple or noise (over 50 mV
pp
below
10 MHz). Note that the use of P2 is required to meet the power specifications.
❑
Check your terminal switches and cables. Be sure the serial cable is secure.
❑
Check that your terminal is connected to serial port A on the front panel.
❑
The BajaPPC-750 monitor uses values stored in on-card NVRAM (ROM) to
configure and set the baud rates for its console port. The lack of a prompt
might be caused by incorrect terminal settings, an incorrect configuration of
the NVRAM, or a malfunctioning NVRAM. Try holding down the
H character
during a reset to abort autoboot using NVRAM parameters. If the prompt
comes up, the NVRAM console parameters are probably configured incor-
rectly. Type
nvopen then nvdisplay to check the console configuration. For
more information about the way the NVRAM is used to configure the console
port baud rates, refer to Chapter 10.