2-10 System Operation
Restart
Perform a system restart as follows:
1. Stop the operating system.
2. Enter pc at the SP command prompt.
Power On Reset
Perform a power on reset as follows:
1. Stop the operating system.
2. Enter dn at the SP command prompt. Check that the main chassis fans stop
rotating.
3. At the rear of the system, turn off the Power Bay Unit circuit breakers (see
Figure 2-3).
4. Wait 10 to 15 seconds to discharge residual voltage.
5. Turn on the AC power circuit breaker for Power Bay Unit 0 and for Power
Bay Unit 1(see Figure 2-3).
6. On the SP console, enter the login account and password.
7. On the SP console, enter up at the SP command prompt. The service
processor turns on DC power and initializes the hardware. The BIOS boots
the operating system.