IBM System x iDataPlex dx360 M4 7912, Руководство по обслуживанию

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System-board switches and jumpers
The following illustration shows the location and description of the switches and
jumpers.
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.
CMOS clear jumper
UEFI boot backup
jumper
IMM TPM physical
presence jumper
System TPM physical
presence jumper
Light path button
CMOS password jumper
Table 2. System board jumpers
Jumper number Jumper name Jumper setting
JP1 CMOS clear jumper
v
Pins 1 and 2: Normal (default).
v
Pins 2 and 3: Clears the real-time
clock (RTC) registry.
JP3 UEFI boot backup jumper
v
Pins 1 and 2: Normal (default).
Loads the primary server firmware
ROM page.
v
Pins 2 and 3: Loads the secondary
(backup) server firmware ROM page.
JP5 System TPM physical
presence jumper
v Pins 1 and 2: Normal (default).
v Pins 2 and 3: Indicates a physical
presence to the system TPM.
PW_CLR1 Password clear jumper
v Pins 1 and 2: Normal (default).
v Pins 2 and 3: Clear password
registers.
Note: Changing the position of the UEFI boot recovery 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.
Chapter 2. Introduction
13