Lenovo ThinkSystem SR850 V3 - System Leds and Diagnostics Display; Troubleshooting by System Leds and Diagnostics; Display; Drive Leds

Table 10. System-board-assembly SW4 switch block description
Switch number
Default position Description
1 Off
When the switch is in the default Off position, the server will boot by
using the primary XClarity Controller firmware. Change this switch to
the On position, to enable the server to boot by using a backup of
the XClarity Controller firmware.
2 Off
Changing this switch to the On position to bypass the operational
firmware image and performs a BMC firmware update, if the normal
firmware update procedure results in an inoperative BMC.
Note: Use this switch only if the normal firmware update procedure
fails and the operational firmware image is corrupted. Use of this
switch disables normal baseboard management controller
operation.
3 Off Reserved
4 Off
Changing the switch to the On position resets the XClarity
Controller.
5 Off Reserved
6 Off Reserved
7 Off Reserved
8 Off Reserved
System LEDs and diagnostics display
See the following section for information on available system LEDs and diagnostics display.
For more information, refer to
“Troubleshooting by system LEDs and diagnostics display” on page 36.
Troubleshooting by system LEDs and diagnostics display
See the following section for information on available system LEDs and diagnostics display.
Drive LEDs
This topic provides information on drive LEDs.
The following table describes the problems that are indicated by drive activity LED and drive status LED.
Figure 19. Drive LEDs
36 ThinkSystem SR850 V3 System Configuration Guide