Product guide

121
Chapter Six Technical Reference
Boot Block Write Protect
Jumper (continued)
7. Move the jumper from pins 14-15 back to pins 13-14 to write protect the
BIOS boot block.
8. Reinstall the side cover, and connect the power cord to the system.
FRB Timer Enable Jumper
The jumper at pins 5, 6 and 7 controls the FRB timers.
Procedure to disable FRB timer:
1. Refer to the “General Procedure to Change Jumper Setting.”
2. Move the recovery boot jumper from pins 5-6 to pins 6-7.
3. Reinstall the side cover for your safety, and connect the power cord to the
system.
4. Turn the system on, and wait for POST to complete.
5. Run the SSU to configure the system.
Chassis Intrusion Detection
Jumper
The chassis contains an alarm switch that sends a notification signal to the server
management software when a cover is removed. The jumper at pins 9, 10 and 11
controls whether this alarm feature is enabled or disabled.
Procedure to disable (bypass) the chassis intrusion switch:
1. Refer to the “General Procedure to Change Jumper Setting” on page 100.
2. Move the chassis intrusion detection jumper from pins 9-10 to pins 10-11 to
disable the alarm switch.
3. Reinstall the side cover for your safety, and connect the power cord to the
system.
4. Turn the system on, and wait for POST to complete.
5. Run the SSU to configure the system.
To enable the intrusion alarm switch, do the above steps but return the jumper back
to pins 9-10.