1-22
Compaq AlphaServer ES40 Service Guide
1.10.1
System Power Controller (SPC)
The System Power Controller (SPC) is responsible for sequencing the
turn-on/turn-off of all power supplies and regulators, monitoring all
system power supplies and regulators, generating hardware resets to
all logic elements, and generating power system status signals for use
by other functional units within the system. Additionally, it is
responsible for emergency shutdown if the internal system
temperature exceeds permissible limits.
An 8-bit CMOS microprocessor (PIC 17C44) with associated programming
controls the functions of the SPC. The PIC processor receives inputs from:
•
Operator control panel (power-on, reset)
•
Power supplies and DC/DC regulators (Power-OK)
•
Thermal sensors (temperature failure)
•
TIG chip (command bus from the firmware)
•
Remote management console logic ( remote power up/down, reset)
It provides outputs to:
•
Power supplies and DC/DC regulators (power supply enables)
•
Processors (DC_OK, reset)
•
TIG bus chip (handshake)
•
Remote management console (power status)
Содержание AlphaServer ES40
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Страница 170: ...5 8 Compaq AlphaServer ES40 Service Guide Figure 5 4 FRU List Designator ...
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Страница 193: ...Error Logs 5 31 Figure 5 14 Deleting an Old Error Frame ...
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Страница 292: ...8 12 Compaq AlphaServer ES40 Service Guide Figure 8 4 Enclosure Panel Removal Pedestal 1 2 PK0234 ...
Страница 298: ...8 18 Compaq AlphaServer ES40 Service Guide Figure 8 7 Covers on the System Chassis Tower PK0216 5 4 3 1 2 2 2 1 ...
Страница 299: ...FRU Removal and Replacement 8 19 Figure 8 8 Covers on the System Chassis Pedestal Rack PK0215 1 4 5 3 2 1 2 ...
Страница 300: ...8 20 Compaq AlphaServer ES40 Service Guide 8 5 Power Supply Figure 8 9 Removing a Power Supply 5 4 3 2 PK0232a 1 ...
Страница 302: ...8 22 Compaq AlphaServer ES40 Service Guide 8 6 Fans Figure 8 10 Replacing Fans Unlock Lock 5 6 1 2 3 4 PK0208 ...
Страница 304: ...8 24 Compaq AlphaServer ES40 Service Guide 8 7 Hard Disk Drives Figure 8 11 Removing a Hard Drive PK0938a 1 2 ...
Страница 310: ...8 30 Compaq AlphaServer ES40 Service Guide Figure 8 14 Aligning DIMM in MMB PK0953a ...
Страница 314: ...8 34 Compaq AlphaServer ES40 Service Guide 8 11 OCP Assembly Figure 8 16 Removing the OCP Assembly 1 2 PK0282 ...
Страница 318: ...8 38 Compaq AlphaServer ES40 Service Guide 8 13 Floppy Drive Figure 8 18 Removing the Floppy Drive 1 2 3 4 4 5 PK0281 ...
Страница 324: ...8 44 Compaq AlphaServer ES40 Service Guide Figure 8 21 Removing the PCI Backplane PK0280 3 1 2 2 4 1 ...
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