Lenovo THINKSERVER 3821 User Manual
Page 142
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.
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ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual