Specifications

132 007-4276-001
A: Technical Reference
Table A-36 identifies jumpers JP1, JP2, JP3, and JP4.
Table A-37 describes the jumper settings for jumpers JP2, JP3, and JP4.
Table A-36 Configuration Jumper Settings
Callout Name State Location
JP1 BMC boot block write
Enable
Disable
Enable
13 - 14
14 - 15
JP2 BIOS recovery boot Disable
Enable
9-10
10 - 11
JP3 Password clear Protect
Erase
5-6
6-7
JP4 CMOS clear BMC control
Force erase
1-2
2-3
Table A-37 Configuration of Jumpers
Option Description
CMOS If pins 1 and 2 of J9F2 are jumpered (default), NVRAM contents are preserved
through system reset unless the user clears them through the front panel (by
pressing the power and reset buttons at the same time for four seconds). If pins 2
and 3 of J9F2 are jumpered, NVRAM contents are set to manufacturing default
during system reset. If the jumper is removed, NVRAM contents are preserved
through system reset.
Password If pins 5 and 6 of J9F2 are jumpered (default), the current system password is
maintained during system reset. If pins 6 and 7 are jumpered, the password is
cleared on reset.
BIOS
recovery
If pins 9 and 10 of J9F2 are jumpered (default), BIOS jumps to a protected area of the
flash part containing the “Recovery BIOS.” If the normal BIOS gets corrupted, and
you are unable to reload a fresh copy from the floppy disk, install the jumper
between pins 10 and 11 of J9F2, which enables the system to boot from the Recovery
BIOS. This code expects a fresh copy of the normal BIOS to be located on a floppy
disk in the floppy drive.