Troubleshooting
4-21
BIOS Beep Codes
0
Table 4-3.
BIOS Beep Codes
Code
Beeps
POST Routine Description
02h
Verify Real Mode
03h
Disable Non-Maskable Interrupt (NMI)
04h
Get CPU type
06h
Initialize system hardware
08h
Initialize chipset with initial POST values
09h
Set IN POST flag
0Ah
Initialize CPU registers
0Bh
Enable CPU cache
0Ch
Initialize caches to initial POST values
0Eh
Initialize I/O component
0Fh
Initialize the local bus IDE
10h
Initialize Power Management
11h
Load alternate registers with initial POST values
12h
Restore CPU control word during warm boot
13h
Initialize PCI Bus Mastering devices
14h
Initialize keyboard controller
16h
1-2-2-3
BIOS ROM checksum
17h
Initialize cache before memory autosize
18h
8254 timer initialization
1Ah
8237 DMA controller initialization
1Ch
Reset Programmable Interrupt Controller
20h
1-3-1-1
Test DRAM refresh
22h
1-3-1-3
Test 8742 Keyboard Controller
24h
Set ES segment register to 4 GB
26h
Enable A20 line
28h
Autosize DRAM
29h
Initialize POST Memory Manager
2Ah
Clear 215 KB base RAM
2Ch
1-3-4-1
RAM failure on address line xxxx
2Eh
1-3-4-3
RAM failure on data bits xxxx of low byte of memory bus
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 ...