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HP PAVILION NX9005 User Manual

Page 118

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Service Manual

Troubleshooting and Diagnostics

3-21

Beep Codes

POST Description

1-2-1-4

Initialize PCI Bus Mastering devices

1-2-2-1

Initialize keyboard controller

1-2-2-3

BIOS ROM checksum

1-2-2-4

Initialize cache before memory Auto size

1-2-3-1

8254 timer initialization

1-2-3-3

8237 DMA controller initialization

1-2-4-1

Reset Programmable Interrupt Controller

1-3-1-1

Test DRAM refresh

1-3-1-3

Test 8742 Keyboard Controller (on motherboard)

1-3-2-1

Set ES segment register to 4 GB

1-3-3-1

Auto size DRAM; or wrong type or no RAM installed

1-3-3-2

Initialize POST Memory Manager

1-3-3-3

Clear 512 KB base RAM

1-3-4-1

RAM failure on address line xxxx

1-3-4-3

RAM failure on data bits xxxx of low byte of memory bus

1-3-4-4

Enable cache before system BIOS shadow

1-4-1-1

RAM failure on data bits xxxx of high byte of memory bus

1-4-1-3

Test CPU bus-clock frequency

1-4-1-4

Initialize Phoenix Dispatch Manager

1-4-2-3

Warm start shut down

1-4-3-1

Shadow system BIOS ROM

1-4-3-3

Auto size cache

1-4-4-1

Advanced configuration of chipset registers

1-4-4-2

Load alternate registers with CMOS values

2-1-1-2

Initialize extended memory for ROMPilot

2-1-1-3

Initialize interrupt vectors

2-1-2-2

POST device initialization

2-1-2-3

Check ROM copyright notice

2-1-2-4

Initialize I20 support

2-1-3-1

Check video configuration against CMOS

2-1-3-2

Initialize PCI bus and devices

2-1-3-3

Initialize all video adapters in system

2-1-3-4

QuietBoot start (optional)

2-1-4-1

Shadow video BIOS ROM

2-1-4-3

Display BIOS copyright notice

2-1-4-4 Initialize

MultiBoot

2-2-1-1

Display CPU type and speed

2-2-1-2

Initialize EISA board

2-2-1-3 Test

keyboard

2-2-2-1

Set key Select if enabled

2-2-2-2

Enable USB devices

2-2-3-1

Test for unexpected interrupts

2-2-3-2

Initialize POST display service

2-2-3-3

Display prompt "Press

F2

to enter SETUP"

2-2-3-4

Disable CPU cache

2-2-4-1

Test RAM between 512 and 640 KB

2-3-1-1

Test extended memory

2-3-1-3

Test extended memory address lines

2-3-2-1

Jump to UserPatch1

2-3-2-3

Configure advanced cache registers

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