System-Board Leds - Lenovo 3633 Installation And Service Manual

Note: Changing the position of the UEFI boot backup jumper from pins 1 and 2 to pins 2 and 3 before the
server is turned on alters which flash ROM page is loaded. Do not change the jumper pin position after the
server is turned on. This can cause an unpredictable problem.
Table 3. SW1 switch block definition
Default position
Switch number
1, 3, 4, 5, 6, 7, 8 Off
2
Off

System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system board.
Figure 13. LEDs on the system board
Complex Programmable Logic Device (CPLD)
1
heartbeat LED
IMM heartbeat LED
3
System-locator LED
5
Lenovo System x3250 M6 Installation and Service Guide
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Description
Reserved.
Power-on password overrides. Changing the position of this switch
bypasses the power-on password check the next time the server is
turned on and starts the Setup Utility so that you can change or
delete the power-on password. You do not have to move the switch
back to the default position after the power-on password in
overridden.
Changing the position of this switch does not affect the
administrator password check if an administrator password is set.
See "Passwords" on page 32
passwords.
Power LED
2
System-error LED
4
Field-Programmable Gate Array (FPGA) error LED
6
for additional information about