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The following table describes the function of each jumper on the system board.
Table 2. System-board jumpers
Jumper name
IMM2 debug serial port enable (CN42)
Low security (CN45)
Power permission (CN47)
Trusted Platform Module (TPM) physical presence (CN51)
System-board LEDs
Use this information to locate the system-board LEDs.
The following illustration shows the locations of the LEDs on the system board.
SAS
backplane
error
Battery
error
Daughter
card
error
IMM
Microprocessor 2
error
error
System-board switches
Use this information to locate the system-board switches.
The following illustration shows the location of the switch block on the system board.
18
Flex System x220 Compute Node Installation and Service Guide
Power
IMM2 debug serial
permission
port enable
DIMM
Microprocessor 1
error 7 - 12
error
DIMM
error 1 - 6
Low security
TPM physical
presence
Description
Two-pin header. If a jumper is installed, the serial I/O port
is sent to the IMM2. If a jumper is not installed, the serial
I/O port is sent to the front serial port.
Three-pin jumper block for debug only. The default
position are pins 2 and 3.
Two-pin jumper block. The default is no jumper. Place a
jumper on pins 1 and 2 to force power permission from
the IMM2 to the real time management module (RTMM).
Two-pin jumper. The default is no jumper. Place a jumper
on pins 1 and 2 to indicate a physical presence to the
IMM2 TPM chip.
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Troubleshooting
