Lenovo TD100X manual System-board switches

System-board switches

The following illustration shows the switches on the system board.

DIMM LEDs

6 12

5 11

4 10

3 9

2 8

1 7

1 SW3

2 SW4 (Boot block/Clear CMOS)

The following table describes the function of each switch on the system board.

Table 2. System board switches

Switch number	Description
1	Boot block:
	v When this switch is on 1, this is normal mode.
	v When this switch is toggled to On, this enables the
	system to recover if the BIOS code becomes damaged.
	See “Recovering from a BIOS update failure” on page 203
	for more information.
2	Clear CMOS:
	v When this switch is on 2, this keeps the CMOS data.
	This is normal mode.
	v When this switch is toggled to On, this clears the CMOS
	data, which clears the power-on password and
	administrator password.

14ThinkServer TD100 and TD100x: Hardware Maintenance Manual