Power-Up Sequence - Compaq AlphaServer ES45 Service Manual

Figure 3–1 Power-Up Sequence
Apply AC power
5 V AUX LEDs
on PS are lit
OCP Power button = IN
Turn on power supplies
Turn on CPU converters
Turn on VTERM
regulators
Set all CPU_DCOK = True
Set SYS_DC_OK = True
Set SYS_RESET = False
Set CPU(n)_RESET = False
CPU =
"Alive"?
Yes
Continue SROM power-up
3-4 ES45 Service Guide
Set CPU(n)_RESET = False
Disable CPU
No
All CPUs reload
initial Y divisor
PK0943