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2.5.5 Flash ROM-Jumper J36
The S1684S/SA uses flash memory to store BIOS Setups. It can be up-
dated as new versions of the BIOS become available. The flash utility will
guide you through the process step-by-step. However, we do not recom-
mend that you flash the onboard BIOS. This procedure should only be
done by a qualified technician or a Tyan technical support engineer.
J36 determines which type of Flash EPROM is used. This jumper has been
set to match the onboard BIOS chip. The factory default for the S1684S is
on pins 1-2(5V). Depending on the type of EPROM used, some boards
may have J36 on pins 2-3(12V). (Refer to Page 12 for more information.)
W arning!!
Do not change J36--(It has been pre-configured at the factory.)
2.5.6 Hardware CMOS & Password Reset
If you are locked out of your system because you have forgotten your pass-
word, or you have set the CMOS incorrectly, follow the instructions below:
a. Power off the system
b. Close J52 by covering the pins of J52 with a jumper cap to short
the circuit between the pins.
c. Wait for 5 seconds, and then remove the jumper from J52.
d. Apply power to the system.
By following the above procedures, the password and CMOS will be reset
to BIOS defaults. (Refer to Page 12 for more information.)
S1684S/SA-001-02 http://www.tyan.com
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