System Board Leds - Lenovo ThinkSystem SR550 Maintenance Manual

Table 10. Jumpers and switches on the system board
Jumper/Switch name
TPM/TCM physical
1
presence jumper
Clear CMOS jumper
2
ME firmware security
3
override
SW6 switch block
4
Power permission
4
Force XCC reset
4
Force XCC update
4
Important:
• Before you move the switches and jumpers, turn off the server. Then, disconnect all power cords and
external cables. Do not open your server or attempt any repair before reading and understanding the
following information:
– http://thinksystem.lenovofiles.com/help/topic/safety_documentation/pdf_files.html
– "Handling static-sensitive devices" on page 56
• Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.

System board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system board.
ThinkSystem SR550 Maintenance Manual
30
Jumper/Switch
Jumper/Switch setting
number
• Pins 1 and 2: The jumper is in default setting.
JP6
• Pins 2 and 3: TPM/TCM physical presence is asserted.
• Pins 1 and 2: The jumper is in default setting.
JP3
• Pins 2 and 3: Clear the real-time clock (RTC) registry.
• Pins 1 and 2: The jumper is in default setting.
JP8
• Pins 2 and 3: Enable Flash security override.
Note: For debug only.
All the switches are in the Off position by default.
• Switches 1, 6, and 8: Reserved.
SW6
(including switches
• Switch 2: Override power-on password switch. Changing
1, 2, 3, 4, 5, 6, 7, and
8)
The default position is Off. Changing this switch to the On
SW6 (switch 7)
position enables Power On.
The default position is Off. Changing this switch to the On
SW6 (switch 4)
position resets the Lenovo XClarity Controller.
The default position is Off. Changing this switch to the On
SW6 (switch 3)
position forces the Lenovo XClarity Controller to update to the
latest version.
position of this switch overrides the power-on password.
Changing position of this switch does not affect the
administrator password.