User`s guide

User Guide
37
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Clearing the CMOS
If you are not able to access the BIOS setup screens, the CMOS Clear jumper will need
to be used to reset the configuration RAM.
1. Power down the system and disconnect the AC power.
2. Open the server.
3. Move the jumper (CMOS CLR) from the normal operation position (pins 1 and
2) to pins 2 and 3 (Clear CMOS position).
4. Reconnect the AC power, power up the system.
5. When the system begins beeping, power it down and disconnect the AC power.
6. Replace the jumper on pins 1 and 2.
7. Close the server chassis.
8. Reconnect the AC power and power up the system.
Recovering the BIOS
This jumper is used to select the BIOS image from which the system will boot.
Note: for more information on the BIOS Update process,
please refer to “Updating the BIOS” on page 303.
BMC jumpers
■ J1B1 = IBMC Force Update Mode
Jumper Position:
1-2: Normal (Default)
2-3: Force Update Mode
Table 2: BIOS Recovery Jumper Descriptions
Pins Jumper Purpose
1-2 System is configured for normal operation (Default).
No jumper Allows the BIOS recovery.