IBM 704 Setting System-Board Configuration Switches, Resetting Nvram and the RTC Switch S6A1-1

Setting System-Board Configuration Switches

Setting System-Board Configuration Switches

Some configuration actions are controlled through switches on the system board. Table 16 summarizes the switch settings that correspond to these actions.

Table 16. Configuration Switch Settings

Switch	Position	Function
S6A1-1	On	Resets NVRAM and the Real-Time
		Clock (RTC) to the factory defaults on
		system startup.
	Off1	Retains current CMOS settings on
		system startup.
S6A1-2	On	Clears the user and administrative
		passwords on system startup.
	Off1	Passwords can be entered or changed.
S6A1-3	Off1	Reserved

Notes:

1.This is the factory default.

2.Do not change the settings for switches S6A1-4, S6A1-5, S6A1-6, or S6A1-8. These switch settings should remain as set at the factory.

Resetting NVRAM and the RTC (Switch S6A1-1)

Setting the CMOS switch to On clears the current values of NVRAM and the RTC when the server is reset. This returns NVRAM and the RTC to the factory default.

When the CMOS switch is set to Off, the default, the current settings are preserved during system reset.

Before you start, be sure that you have:

ŸRead “Electrical Safety” on page 75 and “Handling Static-Sensitive Devices” on page 77.

ŸRemoved the left side cover (as viewed from the front of the server; see “Removing the Side Covers” on page 81).

Appendix A. Server Records 299