System Board Switches - IBM 8853L6U Service Manual

System board switches

The following illustration shows the location of the switch block (SW3) and the light
path diagnostics switch on the system board.
The following table defines the function of each switch in the switch block (SW3).
8
BladeCenter HS21 Types 1885 and 8853: Problem Determination and Service Guide
Switch number
SW3
Light path diagnostics
Switch block (SW3)
Description
Switch block 3 has eight switches:
v 1 - BIOS backup page
– Off: the BIOS starts from the primary BIOS
page.
– On: the BIOS starts from the backup BIOS
page.
v 2 - Reserved
v 3 - Wake On LAN disable
– Off: Enabled (default)
– On: Disabled
v 4 - Reserved
v 5 - Reserved
v 6 - Reserved
v 7 - Reserved
v 8 - Bypass power-on password during next
server start
– Off: Disabled (default)
– On: Enabled