Digital Equipment Celebris FX, Руководство по техническому обслуживанию, Страница: 139 / 219

FRU Replacement
5-38
Main Logic Board Jumper Settings
Feature Function Setting Description
CMOS
clear Discharge
Normal
(1)
J3, 4-5, jumpered
J3, 5-6, jumpered
(1)
Clears CMOS of all BIOS information
when jumper is set for Discharge. Use
the Discharge setting when you need to
reconfigure your computer’s resources.
After discharging CMOS, you must
reset the jumper to Normal before
rebooting your computer.
Recovery
mode Recovery
mode
Normal
(1)
J1, 3-4, jumpered
J1, 3-4, unjumpered
(1)
Enables you to boot from a Recovery
Disk should an error occur while you
are flashing the BIOS.
Boot block
update Enabled
Disabled
(1)
J3, 1-2, jumpered
J3, 2-3, jumpered
(1)
Set this jumper to disabled to prevent
unauthorized personnel from changing
the BIOS boot block.
Password
clear Password
clear (MFG
test)
Normal
mode
(1)
J1, 1-2, jumpered
J1, 1-2, unjumpered
(1)
If you forget your password, set this
jumper to password clear and then
restart the computer.
ASYNC/
Pipe burst
SRAM ASYNC
Burst
(1)
J3, 7-8, jumpered
J3, 8-9, jumpered
(1)
This setting determines how the SRAM,
cache memory is addressed and used.
Factory
setting J1, 13-14 Reserved.
(1) Factory default setting