Sony HDXS-C200 Service Manual page 28

Jumpers
The Motherboard provides various jumpers for
configuring and monitoring the server.
Item Description
J1C3 Bank Select Jumper. The server stores two
versions of the BIOS: the current BIOS, and the
one previously installed. If you have a problem
with your BIOS, you may revert to the
previously installed BIOS. If you upgrade the
BIOS version more than once, the two versions
stored in your server will be identical.
1 - 2 Bank 0: Boot to an alternate BIOS.
2 - 3 Boot from the standard BIOS. These pins
should be jumpered for normal operation.
28
Internal parts
Force Lower Bank
Normal (Default) Operation
Item Description
J1D1 CMOS Clear Jumper. If you are not able to
access the BIOS setup screens, use the CMOS
Clear jumper to reset the configuration RAM.
1 - 2 Protect CMOS: these pins should be
jumpered for normal operation.
2 - 3 Erase CMOS: If these pins are jumpered
for 5 to 10 seconds, the CMOS settings will be
cleared on the next server reset. These pins
should not be jumpered for normal operation.
To clear the CMOS: Power down the server,
leaving AC power connected. Place the jumper
on pins 2 - 3 for 5 to 10 seconds. Move the
jumper back to pins 1 - 2. Power on the server.
J1D2 Password Clear Jumper. If the user or
administrator password(s) is lost or forgotten,
moving the password clear jumper into the
"clear" position clears both passwords. The
password clear jumper must be restored to its
original position before a new password(s) can
be set.
1 - 2 Protect password: These pins should be
jumpered for normal operation.
2 - 3 Erase password: If these pins are
jumpered, then the password will be cleared on
the next server boot. These pins should not be
jumpered for normal operation. To use this
jumper to reset the password: Power down the
server. Place the jumper on pins 2 - 3. Power
on the server and wait 5 to 10 seconds. Power
down the server. Move the jumper back to pins
1 - 2. Power on the server.
J1E3 BMC Force Update. If you are not able to
access the BIOS setup screens, the CMOS
Clear jumper will need to be used to reset the
configuration RAM.
1 - 2 Disable force update: These pins should
be jumpered for normal operation.
2 - 3 Enable force update: Jumpering these
pins forces a BMC update.
Default
Clear CMOS
Default
Clear Password
Default
Force BMC Update