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Table 6. System-board jumpers
Jumper
number
Jumper
name Jumper setting
1 JP6 UEFI boot
recovery
v Pins 1 and 2: Normal operation (default).
v Pins 2 and 3: Enable the UEFI recovery mode.
2 JP1 CMOS
clear
v Pins 1 and 2: Normal operation (default).
v Pins 2 and 3: Clears CMOS.
3 SW6 switch
block
Note: If no jumper is present, the server responds as if the pins are set to 1
and 2.
Table 7. System-board switch 6
SW 6 Switches Switch description
1 Reserved (Default off)
2 Power-on password override when on. (Default off)
3 Reserved (Default off)
4 When off, this loads the primary IMM firmware ROM page. When on, this loads the secondary
(backup) IMM firmware ROM page. (Default off)
Notes:
1. Before you change any switch settings or move any jumpers, turn off the server;
then, disconnect all power cords and external cables. (Review the information in
Chapter 2, “Safety information,” on page 5).
2. Any system-board switch or jumper blocks that are not shown in the illustrations
in this document are reserved.
134 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual