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4-22 System Board
Recovering the BIOS
This procedure should only be performed under the guidance of qualified
technical personnel.
You can obtain the BIOS Recovery program by downloading it to a diskette
from the NEC CSD Bulletin Board System (BBS), the NEC CSD File Transfer
Protocol (FTP) site, or the NEC CSD website. See Section 9 for information on
how to access the files and download them onto a diskette.
Boot Block Write Protect
The jumper at pins 13, 14, and 15 controls whether the BIOS boot block is
protected from being erased and reprogrammed.
!
CAUTION
Leave the boot block jumper at the factory-default setting:
Programming the boot block incorrectly prevents the system
from booting. Programming should only be done by a
technically qualified person. The procedure requires a
special Boot Block Update utility. Contact your dealer or
sales representative for more information.
Fault Resilient Booting Timer Enable Jumper
Fault resilient booting (FRB) prevents the system from stopping due to a boot
problem. Two sets of timers are implemented that automatically reset the system
if the system should halt for some reason.
FRB 2 - 5 second timer. If the primary processor does not come up in 5
seconds, the system automatically resets and switches to the secondary
processor secondary (if installed, otherwise it tries to boot again off of the
primary processor).
FRB 3 - 7 minute timer. If the system does not make it up to the end of
POST in 7 minutes, the system automatically resets and tries again. It is
assumed that the processor failed regardless of what may have caused the
system to hang. The primary processor is taken off line and the system
boots off the secondary processor (if installed, otherwise it tries to boot
again off of the primary processor.) Bad memory or a bad plug-in card
can cause an FRB 3 failure.
All failures are logged to the system event log.
The system remembers all FRB errors and displays them at the end of POST
until you select the Processor Retest option from the BIOS Setup utility.
Summary of Contents for POWERMATE PROFESSIONAL 9000E - SERVICE
Page 14: ...1 System Overview Configurations Features Components ...
Page 92: ...4 System Board Sockets and Connectors Jumpers Components Resources ...
Page 120: ...5 Expansion Boards Sound Board Graphics Board Network Board ...
Page 132: ...7 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning ...
Page 136: ...8 Troubleshooting Checklist Diagnostics ...
Page 176: ...A Release Notes General Notes Windows NT Issues ...