SD186ES/SD186EM Advanced Micro Devices, SD186ES/SD186EM Datasheet - Page 11

• Manufacturer Part Number: SD186ES/SD186EM
• Description: SD186ES/SD186EM Demonstration Board Users Manual
• Manufacturer: Advanced Micro Devices

Table 1-1. Installation Troubleshooting
SD186ES/SD186EM Demonstration Board User’s Manual
Problem
Nothing happens when
pushing the RESET
button.
The computer does not
respond with the E86MON
software prompt.
After typing a during reset,
the terminal emulation
software displays
unreadable characters.
After a processor reset, the
LEDs do not flash in the
expected oscillating
pattern.
The terminal emulation
program locks up the
software or PC.
The power LED does not
turn on with power.
There is a problem you
cannot resolve.
Solution
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.
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.
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.
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.
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.
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.
Contact the AMD Corporate Applications technical
support services. (See Chapter 3, “Product Support”
for phone numbers and more information.)
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