
SD188ES/SD188EM Demonstration Board User’s Manual
1-5
1.1
Table 1-1. Installation Troubleshooting
Problem
Solution
Nothing happens when
pushing the RESET
button.
Sometimes it is difficult to make a good
connection when pushing the small RESET
button. If all else fails, remove the power supply
from the AC electrical outlet and disconnect and
reconnect the power supply. The LEDs will flash
in an oscillating pattern when the reset is
successful.
The computer does not
respond with the E86MON
software prompt.
Reset the board by pressing the RESET switch and
typing an a while the LEDs are flashing in an
oscillating pattern. If this does not work, verify the
power, check the cables, etc.
After typing a during reset,
the terminal emulation
software displays
unreadable characters.
Check the baud rate setting for the terminal
emulation software. It should be set to 19200. Also
check the word length (8), stop bits (1), parity (N),
and turn off any hardware flow control.
After a processor reset, the
LEDs do not flash in the
expected oscillating
pattern.
Check that the power LED is on and the correct
voltage is supplied to the board. Ensure that the
polarity of the power connector is correct.
The terminal emulation
program locks up the
software or PC.
Check the COM port connection with the target
board. Make sure that the same COM port is
selected in the terminal emulation software. In
some PCs if the correct COM port is not specified,
the software will fail to function—it will lock in
a continuous loop waiting for an answer from the
incorrect serial port.
The power LED does not
turn on with power.
Immediately disconnect the power supply. Ensure
that the polarity of the power connector is correct.
This is a very serious failure of the hardware. If
the power source is connected incorrectly, the
board will be permanently damaged.
There is a problem you
cannot resolve.
Contact the AMD Corporate Applications
technical support services. (See Chapter 3,
"Product Support" for phone numbers and more
information.)
frtbook : ch1 Page 5 Monday, June 2, 1997 3:37 PM