IBM 388, 387, 393, 391, 389, 441, 390, 392 manual Clear CMOS /Recovery jumper

The following illustration shows the status of the jumpers on the system board of your server. You can configure, recover, enable, or disable some specific features of the system board by setting the jumpers.

Figure 29. System board jumpers

	Clear CMOS (Complementary Metal Oxide		Clear password jumper
1		4
	Semiconductor) /Recovery jumper
	BMC setting jumper		Manufacturing jumper (reserved for the manufacturer)
2		5
	BIOS recovery jumper
3

Attention: To set the jumpers, you need to open the server cover. Do not open your server or attempt any repair before reading and understanding the “Safety information” on page iii and “Guidelines” on page 83.

1

Clear CMOS /Recovery jumper

Used to clear CMOS and recover your server to the factory default settings.

Note: After clearing CMOS, all your BIOS passwords are erased and the BIOS recovers to the factory default settings.

To clear CMOS, do the following:

1.Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server.

2.Remove the server cover. See “Removing the server cover” on page 85.

48ThinkServer User Guide