IBM 7383, Инструкция по установке и обслуживанию

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Note: If there is a clear protective sticker on the top of the switch blocks, you must
remove and discard it to access the switches.
The following table describes the functions of the SW4 switch block on the system
board.
Table 3. System board SW4 switch block definition
Switch
number
Switch name Default position Description
1 UEFI boot backup Off When this switch is off, the primary firmware ROM page is
loaded. When this switch is on, the secondary (backup)
firmware ROM page is loaded.
Note: Changing the position of the UEFI boot back switch
before the server is turned on alters which flash ROM page is
loaded. Do not move the switch after the server is turned on.
This can cause an unpredictable problem.
2 System TPM physical
presence Off Indicates a physical presence to the system TPM when on.
3 Power-on password
override Off 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 when on.
Note:
1. You do not have to move the switch back to the default
position after the power-on password in overridden.
2.
Changing the position of this switch does not affect the
administrator password check if an administrator
password is set. See “Passwords” on page 111 for
additional information about passwords.
4 CMOS clear Off Clears CMOS memory when on.
Note:
1. Before you change any switch settings or move any jumpers, turn off the
server. Review the information in “Safety” on page vii, “Installation guidelines”
on page 34, “Handling static-sensitive devices” on page 37, and “Turning off
the server” on page 23.
2. Any system-board switch or jumper block that is not shown in the illustrations
in this document are reserved.
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System x3500 M4 Type 7383: Installation and Service Guide