4-28
Troubleshooting
0x24
Set segment-register addressability to 4 GB
LBT
Core
0xCC
Redirect Int 10h to enable target board to use a remote
serial video (PICO BIOS).
LBT
Core
0x8A
Initialize Extended BIOS Data Area and initialize the
mouse.
LBT
Core
0x9D
Initialize Security Engine.
LBT
Core
0x55
USB Initialization
LBT
Core
0x52
Verify keyboard reset.
LBT
Core
0x54
Initialize keystroke clicker if enabled in Setup.
LBT
Core
0x76
Check status bits for keyboard-related failures. Display
error messages on the screen.
LBT
Core
0x4A
Initialize all video adapters in system
LBT
Core
0x4C
Shadow video BIOS ROM if specified by Setup, and
CMOS is valid and the previous boot was OK.
LBT
Core
0x59
Register POST Display Services, fonts, and languages
with the POST Dispatch Manager.
LBT
Core
0x57
Initialize 1394 Firewire
LBT
Core
0xD6
Initialize PC card
LBT
Core
0x58
Test for unexpected interrupts. First do an STI for hot
interrupts. Secondly, test the NMI for an unexpected
interrupt. Thirdly, enable the parity checkers and read from
memory, checking for an unexpected interrupt.
LBT
Core
0x3F
ROMPolit memory init
LBT
Core
0xC4
Install the IRQ vectors (Sever Hotkey)
LBT
Core
0x7C
Initialize the hardware interrupt vectors from 08 to 0F and
from 70h to 77H. Also set the interrupt vectors from 60h to
66H to zero.
LBT
Core
0x41
ROM Pilot Init
LBT
Core
0x4B
Initialize QuietBoot if it is installed. Enable both keyboard
and timer interrupts (IRQ0 and IRQ1). If your POST tasks
require interrupts off, preserve them with a PUSHF and
CLI at the beginning and a POPF at the end.
LBT
Core
0xDE
Initialize and UNDI ROM (fro remote flash)
LBT
Core
0xC6
Initial and install console for UCR
LBT
Core
0x4E
Display copyright notice.
LBT
Core
0xD4
Get CPU branding string
LBT
Core
0x50
Display CPU type and speed
LBT
Core
Table 4-4.
POST Codes
POST Code
Function
Phase
Component
Summary of Contents for Aspire 4743
Page 1: ... Aspire 4743 4743G 4743Z 4743ZG SERVICEGUIDE ...
Page 10: ...10 ...
Page 11: ...CHAPTER 1 Hardware Specifications ...
Page 14: ...1 4 ...
Page 50: ...1 40 Hardware Specifications and Configurations ...
Page 51: ...CHAPTER 2 System Utilities ...
Page 70: ...2 20 System Utilities ...
Page 71: ...CHAPTER 3 Machine Maintenance ...
Page 74: ...3 4 ...
Page 82: ...3 12 Machine Maintenance 4 Lift the base door to remove Figure 3 9 Base Door ...
Page 85: ...Machine Maintenance 3 15 6 Detach the bracket from the HDD Figure 3 14 HDD Bracket ...
Page 87: ...Machine Maintenance 3 17 4 Pull the WLAN module out of the slot Figure 3 17 WLAN Module ...
Page 100: ...3 30 Machine Maintenance 6 Lift the speakers from the upper cover Figure 3 40 Speaker Cable ...
Page 106: ...3 36 Machine Maintenance 4 Lift the USB board from the lower cover Figure 3 50 USB Board ...
Page 174: ...3 104 Machine Maintenance ...
Page 175: ...CHAPTER 4 Troubleshooting ...
Page 207: ...CHAPTER 5 Jumper and Connector Locations ...
Page 215: ...CHAPTER 6 FRU List ...
Page 216: ...6 2 Aspire 4743 4743G 4743Z 4743ZG Exploded Diagrams 6 4 Main Assembly 6 4 LCD Assembly 6 5 ...
Page 234: ...6 20 FRU List ...
Page 235: ...CHAPTER 7 Model Definition and Configuration ...
Page 236: ...7 2 Aspire 4743 4743G 4743Z 4743ZG 7 3 ...
Page 270: ...7 36 Model Definition and Configuration ...
Page 338: ...7 104 Model Definition and Configuration ...
Page 339: ...CHAPTER 8 Test Compatible Components ...
Page 340: ...8 2 Microsoft Windows 7 Environment Test 8 4 ...
Page 351: ...CHAPTER 9 Online Support Information ...
Page 352: ...9 2 Introduction 9 3 ...
Page 354: ...9 4 Online Support Information ...