MS-9638 Server Board
2-16
BIOS Recovery Jumper: J9
Users can short connect pin#2-3 to recover the system BIOS. When the system is
done with the job, the buzzer will beep to remind users to set the jumper to its normal
state (pin#1-2 short connected).
LAN Jumper: JLANDIS1, JLANDIS2
These jumpers control the onboard LAN. The JLANDIS1 disables/enables the LAN1
jack while the JLANDIS2 disables/enables the LAN2 jack.
BIOS Write Protect Jumper: JBIOS1
A "boot block" program is included as part of the system BIOS to recover the system
from a situation when the BIOS code is incorrect/corrupted or needs to be updated.
When the BIOS code is corrupted or needs to be updated, you have to at first disable
the write protect function by shorting 1-2 pin of the JBIOS1 jumper. Then the boot
block will try to recover the BIOS code, usually by reading it from a specially-pre-
pared floppy disk.
Under normal operation, we suggest that you enable the write protect function by
shorting 2-3 pin of the JBIOS1 jumper to protect the boot block from virus infection.
JBIOS1
1
Disable Write Protect Enable Write Protect
1
3
1
3
J9
1
1
3
RecoveryNormal
1
3
JLANDIS1/
JLANDIS2
1
1
3
Enable LAN1/
Enable LAN2
1
3
Disable LAN1/
Disable LAN2
9638v3.0-2.p65 2007/5/8, 下午 01:5416
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