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Compaq ProLiant 8000 ProLiant 8000 Servers Maintenance and Service Guide - Page 134

Power-On Self-Test, POST Error Messages

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Diagnostics and Troubleshooting 6-7 Power-On Self-Test The Power-On Self-Test (POST) is a series of diagnostic tests that run automatically on Compaq computers when the system is turned on. POST checks the following assemblies to ensure that the computer system is functioning properly: System ROM Keyboard System board Memory Memory expansion boards Controllers Diskette drives Hard drives Processor Power Modules Fans POST Error Messages If POST finds an error in the system, the error condition is indicated by an audible and/or visual message. If an error code displays on the screen during POST or after resetting the system, use the instructions in the POST Error Messages table. NOTE: Many of the actions listed require you to run Diagnostics or the Compaq System Configuration Utility. Steps for running these utilities are provided following the POST Error Messages tables. The Recommended Action column lists the steps necessary to correct the problem. After completing each step, run the Diagnostics program to verify whether the error condition has been corrected. If the error code reappears, perform the next step, then run the Diagnostics program again. Follow this procedure until Diagnostics no longer detects an error condition.

Section	Page
Illustrated Parts Catalog	10
Mechanical Parts Exploded View	11
Mechanical Spare Parts List	12
System Components Exploded View	14
System Components Spare Parts List	15
Removal and Replacement Procedures	18
Electrostatic Discharge Information	18
Symbols on Equipment	19
System Interlocks	20
Preparation Procedures	20
Hot-Pluggable Parts	20
Non-Hot-Pluggable Parts	20
Safety Interlock Switches	20
Turning Off the Server	21
Rack Warnings	22
Server Warnings and Precautions	22
Top Access Panel	23
Right Side Access Panel	24
Left Side Access Panel	25
Casters	26
Front Air Baffle	27
Rear Air Baffle	28
Main Processor Air Baffle	29
Face Plates	30
Removable Media Trim	30
Front Bezel	31
Mass Storage and Removable Media Devices	32
Removable Media Blanking Panel	33
Removable Media Devices	34
Hard Drive Blanking Panels	35
Hot-Plug Drive Replacement Guidelines	36
Unsafe Hot-Plug Drive Replacement Precautions	36
Drive Cage with Backplane Board	38
Power On/ Standby Switch	39
Power Supply Lock Bar	41
Power Supplies	42
Power Supply Blanking Panel	43
Hot-Plug Power Supplies	44
Power Backplane Board	46
Fans	47
Hot-Plug Rear Processor Fan	47
Redundant Rear Processor Fan	48
Hot-Plug Front Processor Fan Assembly	49
Redundant Front Processor Fan Assembly	50
Hot-Plug Front I/ O Fans	51
Hot-Plug I/O Fan Board	53
SDRAM Memory	54
Dual Inline Memory Modules	54
Memory Expansion Board	55
Cache Accelerators	59
Processors, Processor Power Modules, Processor Terminator Boards, Processor Board with Tray	62
Processor	63
Processor Power Modules	67
Processor Terminator Boards	70
Lower Processor Support Structure	71
Upper Processor Support Structure	72
Processor Board with Tray	73
Integrated Management Display	76
I/O Expansion Slots and Related Components	77
Array Controllers with Extended SCSI	81
Extended SCSI Dividers	84
I/O Expansion Boards	85
Cabling Diagrams	86
Hot-Plug Basket Insulator	88
Expansion Board Guide	89
PCI Hot Plug Interface Board	90
I/O Board	91

Match case Limit results 1 per page

Diagnostics and Troubleshooting

6-7

Power-On Self-Test

The Power-On Self-Test (POST) is a series of diagnostic tests that run automatically on

Compaq computers when the system is turned on. POST checks the following assemblies to

ensure that the computer system is functioning properly:

■

System ROM

■

Keyboard

■

System board

■

Memory

■

Memory expansion boards

■

Controllers

■

Diskette drives

■

Hard drives

■

Processor Power Modules

■

Fans

POST Error Messages

If POST finds an error in the system, the error condition is indicated by an audible and/or visual

message. If an error code displays on the screen during POST or after resetting the system, use

the instructions in the POST Error Messages table.

NOTE:

Many of the actions listed require you to run Diagnostics or the Compaq System Configuration

Utility. Steps for running these utilities are provided following the POST Error Messages tables.

The Recommended Action column lists the steps necessary to correct the problem. After

completing each step, run the Diagnostics program to verify whether the error condition has

been corrected. If the error code reappears, perform the next step, then run the Diagnostics

program again. Follow this procedure until Diagnostics no longer detects an error condition.