Lenovo ThinkStation 4215 Hardware Maintenance Manual page 175

4. Remove any cables that impede access to the Clear CMOS /Recovery jumper.
5. You might need to remove the secondary hard disk drive to access the Clear
CMOS /Recovery jumper. See "Replacing the secondary hard disk drive" on
page 109.
6. Move the jumper from the standard position (pin 1 and pin 2) to the
maintenance position (pin 2 and pin 3).
7. Reconnect any cables that were disconnected and reinstall the secondary hard
disk drive if removed. See "Replacing the secondary hard disk drive" on page
109.
8. Reinstall the computer cover and reconnect the power cords for the computer
and monitor to electrical outlets. Refer to "Completing the FRU replacement"
on page 122.
9. Turn on the computer and the monitor. Insert the POST/BIOS update (flash)
disc into the optical drive.
10. Turn the computer off and back on again. The recovery session begins.
Note: The recovery session will take two to three minutes. During this time
you will hear a series of beeps.
11. After the recovery session is completed, the series of beeps will end, and the
system will automatically turn off. Remove the disc from the optical drive
before the system completely turns off.
12. Repeat step 2 through step 4.
13. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1
and pin 2).
14. Reconnect any cables that were disconnected and reinstall the secondary hard
disk drive if removed.
15. Reinstall the computer cover and reconnect any cables that were disconnected.
16. Turn on the computer to restart the operating system.
Chapter 11. Additional service information
169