4-36 Sun Fire X4150 Server Service Manual • November 2009
4. Attach an antistatic wrist strap.
See Section 2.7, “Performing Electrostatic Discharge and Antistatic Prevention
Measures” on page 2-8.
5. Remove the top cover.
See Section 2.8, “Removing the Top Cover” on page 2-10.
6. Locate the jumper J23.
Access the J23 jumper on the rear of the motherboard, opposite of the power
supply unit.
7. Place the jumper on position 2-4.
8. Power on the server and boot until you see a message that the Password has
been cleared.
9. Power off the server, and remove AC power.
10. Remove the jumper from position 2-4, and replace it back to its original
position.
11. Install the top cover.
See Section 6.1, “Installing the Top Cover” on page 6-2.
12. Slide the server into the rack.
See Section 6.3, “Returning the Server to the Normal Rack Position” on page 6-5.
13. Reconnect the power cord (or cords) to the power supply (or supplies).
Verify that the AC Present LED is lit.
See Section 6.4, “Powering On the Server” on page 6-6.
14. Power on the server.
See Section 6.4, “Powering On the Server” on page 6-6.
The password is reset.
▼ To Reset CMOS NVRAM Using a Jumper
To clear the CMOS NVRAM using a jumper:
1. Power off the server.
See Section 2.4, “Powering Off the Server” on page 2-3.
2. Disconnect the power cord (or cords) from the power supply (or supplies).
See Section 2.4, “Powering Off the Server” on page 2-3.
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