Lenovo 3826, 3836, 3809, 3724, 3824, 3808, 3815, 3817 manual JP6, Rom

Table 2. System-board jumpers (continued)

Jumper number	Jumper name	Jumper setting
JP6	UEFI boot recovery jumper	v Pins 1 and 2: Normal
		(default) - Loads the
		primary server firmware
		ROM.
		v Pins 2 and 3: This enables
		the server to recovery if
		the server firmware
		becomes damaged.

Notes:

vIf no jumper is present, the server responds as if the pins are set to 1 and 2.

vDo not change the jumper pin position after the server is turned on. Changing the position of the UEFI boot recovery jumper from pins 1 and 2 to pins 2 and 3 before the server is turned on alters which flash ROM page is loaded. This can cause an unpredictable problem.

The following table describes the function of each pin on the SW6 switch block.

Table 3. System-board switches

Switch pin number	Default value	Description
1	Off	Reserved.
2	Off	Power-on password override.
		Changing the position of this
		switch bypasses the
		power-on password check
		the next time the server is
		turned on and starts the
		Setup Utility so that you can
		change or delete the
		power-on password. You do
		not have to move the switch
		back to the default position
		after the power-on password
		is overridden.
		Changing the position of this
		switch does not affect the
		administrator password check
		if an administrator password
		is set.
		See “Passwords” on page
		141 for additional information
		about passwords.
3	Off	Reserved.
4	Off	v When this switch is on Off,
		this is normal mode. This
		loads the primary IMM
		firmware ROM page.
		v When this switch is
		toggled to On, this loads
		the secondary (backup)
		IMM firmware ROM page.

32ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide