Table 3. System board SW3 switch block definition
Switch
number Default position Description
1 Off Reserved.
2 Off Reserved.
3 Off Power-on override. When this switch is toggled to
On and then to Off, you force a power-on which
overrides the power-on and power-off button on the
server and they become nonfunctional.
4 Off Power-on password override. Changing the position
of this switch 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. You do not have to
move the switch back to the default position after
the power-on password in overridden.
Changing the position of this switch does not affect
the administrator password check if an
administrator password is set.
See “Passwords” on page 305 for additional
information about passwords.
The following table describes the functions of the SW2 switch block on the system
board.
Table 4. System board SW2 switch block definition
Switch
number Default position Description
1 Off Forced power permission overrides the IMM
power-on checking process. (Trained service
technician only).
2 Off Reserved.
3 Off Reserved.
4 Off Reserved.
Important:
1. Before you change any switch settings or move any jumpers, turn off the server;
then, disconnect all power cords and external cables. Review the information in
“Safety” on page vii, “Installation guidelines” on page 191, and “Handling
static-sensitive devices” on page 193.
2. Any system-board switch or jumper block that is not shown in the illustrations in
this document are reserved.
20 IBM System x3650 M4 Type 7915: Problem Determination and Service Guide
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