Lenovo 3719, 3821, 3822, 3823 manual Jumper Number Name Jumper setting

Recovering from a Lenovo ThinkServer Server Firmware update failure

If power to the server is interrupted while you are updating the Lenovo ThinkServer Server Firmware, the server might not restart correctly or might not display video. If this happens, complete the following steps to recover:

1.Read the safety information that begins on page 5.

2.Turn off the server and all attached devices; then, disconnect all power cords and external cables.

3.Unlock and remove the side cover (see “Removing the left-side cover” on page 157).

4.Locate JP6 on the system board and remove any adapters that impede access to the jumpers.

Table 5. System-board jumpers

Jumper	Jumper
number	name	Jumper setting
JP6	UEFI boot	v Pins 1 and 2: Normal operation (default).
	recovery	v Pins 2 and 3: Enable the UEFI recovery mode.
JP1	CMOS	v Pins 1 and 2: Normal operation (default).
	clear	v Pins 2 and 3: Clears CMOS.
SW6	switch
	block

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

5.Move jumper JP6 to pins 2 and 3 to enable the UEFI recovery mode.

6.Replace any adapters that you removed; then, install the side cover (see “Installing the left-side cover” on page 158).

7.Reconnect all external cables and power cords.

8.Insert the update CD into the CD or DVD drive.

9.Turn on the server and the monitor.

After the update session is completed, remove the CD from the drive and turn off the server.

122ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual