Compaq AlphaServer ES40 - Power-Up Sequence

3-4 Compaq AlphaServer ES40 Service Guide
Figure 3–1 Power-Up Sequence
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"?
No
Disable CPU
All CPUs reload
initial Y divisor
Yes
Continue SROM power-up
Apply AC power
5 V AUX LEDs
on PS are lit
PK0943
Set CPU(n)_RESET = False