System Overview 1-33
When AC is applied to the system, Vaux (auxiliary voltage) is asserted and is sensed
by the PCM section of the motherboard if the On-Off Button is On. The PCM
asserts DC_ENABLE_L starting the power supplies. If there is a hard fault on
power-up, the power supplies shut down immediately; otherwise, the power system
powers up and remains up until the system is shut off or the PCM senses a fault. If a
power fault is sensed, the signal SHUTDOWN is asserted after a 30 second delay.
Cycling the On-Off button can restore the power.
Содержание AlphaServer 1200
Страница 12: ......
Страница 50: ......
Страница 90: ......
Страница 127: ...Error Logs 4 37...
Страница 150: ......
Страница 174: ...6 10 Service Manual PRELIMINARY 6 5 CPU Fan Removal and Replacement Figure 6 4 Removing CPU Fan PKW 0516 97...
Страница 194: ...6 30 Service Manual PRELIMINARY 6 15 CD ROM Removal and Replacement Figure 6 14 Removing CD_ROM 1 PKW0519 97...
Страница 196: ...6 32 Service Manual PRELIMINARY 6 16 Floppy Removal and Replacement Figure 6 15 Removing Floppy 1 PKW0520 97...
Страница 204: ......
Страница 236: ......
Страница 244: ......
Страница 272: ......