Internal Leds, Connectors, And Jumpers; I/O Board Internal Connectors And Jumpers - IBM System x3950 Type 8878 Service Manual

Internal LEDs, connectors, and jumpers

The following illustrations show the connectors, LEDs, and jumpers on the internal
boards. The illustrations might differ slightly from your hardware.

I/O board internal connectors and jumpers

The following illustration shows the internal connectors and jumpers on the I/O
board.
The following table describes the function of each three-pin jumper block.
Table 2. I/O board jumper blocks
Jumper name
Force power on (J2)
Power-on password (J9)
Boot recovery (J14)
®
Wake on LAN bypass (J15)
8
IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide
Description
The default position is pins 1 and 2. Change the position of this
jumper to pins 2 and 3 to force the server to start up when you
connect the server to ac power.
The default position is pins 1 and 2. Change the position of this
jumper to pins 2 and 3 to bypass the power-on password check.
Changing the position of this jumper does not affect the
administrator password check if an administrator password is set. If
the administrator password is lost, the operator information panel
must be replaced.
The default position is pins 1 and 2 (use the primary page during
startup). Move the jumper to pins 2 and 3 to use the secondary
page during startup.
The default position is pins 1 and 2. Move the jumper to pins 2 and
3 to prevent a Wake on LAN packet from waking the system when
the system is in the powered-off state.