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4-6
Troubleshooting
Checkpoints
0
A checkpoint is either a byte or word value output to I/O port 80h. The BIOS outputs
checkpoints throughout bootblock and Power-On Self Test (POST) to indicate the task the
system is currently executing. Checkpoint sare very useful in aiding software developers or
technicians in debugging problems that occur during the pre- boot process.
Viewing BIOS checkpoints
0
Viewing all checkpoints generated by the BIOS requires acheckpoint card, also referred to
as a POST card or POST diagnostic card. These are ISA or PCI add-in cards that show the
value of I/O port 80h on a LED display. Checkpoints may appear on the bottom right corner of
the screen during POST. This display method islimited, since it only displays checkpoints that
occur after the video card has been activated.
Bootblock Initialization Code Checkpoints
0
The Bootblock initialization code sets up the chipset, memory, and other components before
system memory is available. The following table describes the type of checkpoints that may
occur during the bootblock initialization portion of the BIOS.
NOTE:
NOTE
:
Please note that checkpoints may differ between different platforms based on system
configuration. Checkpoints may change due to vendor requirements, system chipset or
option ROMs from add-in PCI devices.
Table 4-2.
Checkpoint
Description
Before D0
If boot block debugger is enabled, CPU cache-as-RAM functionality is
enabled at this point. Stack will be enabled from this point.
D0
Early Boot Strap Processor (BSP) initialization like microcode update,
frequency and other CPU critical initialization. Early chipset initialization
is done.
D1
Early super I/O initialization is done including RTC and keyboard
controller. Serial port is
enabled at this point if needed for debugging. NMI is disabled. Perform
keyboard controller BAT test. Save power-on CPUID value in scratch
CMOS. Go to flat mode with 4GB limit and GA20 enabled.
D2
Verify the boot block checksum. System will hang here if checksum is
bad.
D3
Disable CACHE before memory detection. Execute full memory sizing
module. If memory sizing module not executed, start memory refresh and
do memory sizing in Boot block code. Do additional chipset initialization.
Re-enable CACHE. Verify that flat mode is enabled.
D4
Test base 512KB memory. Adjust policies and cache first 8MB. Set
stack.
Содержание Aspire AZS600_P
Страница 1: ...Acer AZS600_Pt AZS600_P SERVICEGUIDE ...
Страница 4: ...iv ...
Страница 8: ...ii viii ...
Страница 9: ...CHAPTER 1 Hardware Specifications ...
Страница 29: ...Hardware Specifications and Configurations 1 21 M B Placement 0 ...
Страница 32: ...1 24 Hardware Specifications and Configurations Block Diagram 0 ...
Страница 33: ...CHAPTER 2 System Utilities ...
Страница 61: ...System Utilities 2 29 1 Check ME status with MEInfo Utility and ManufacturingMode is Disabled ...
Страница 68: ...2 36 System Utilities 10 Select Yes and press Enter key 11 Select Save Exit Setup and press Enter key ...
Страница 69: ...System Utilities 2 37 12 Select Yes and press Enter key 13 Flash BIOS is finished ...
Страница 72: ...2 40 System Utilities ...
Страница 77: ...CHAPTER 3 System Disassembly and Assembly ...
Страница 80: ...3 4 ...
Страница 83: ...3 7 Disassembly Flowchart 0 Figure 3 1 Disassembly Flowchart ...
Страница 85: ...3 9 Table 3 2 Screws Step Screw Quantity Screw Type Stand Removal M4 6 3 ...
Страница 87: ...3 11 Figure 3 6 ODD Bezel ...
Страница 94: ...3 18 Figure 3 18 VESA Support Bracket ...
Страница 96: ...3 20 Figure 3 21 HDD Module 4 Remove 4 screws to separate HDD from the cage Figure 3 22 HDD Module ...
Страница 99: ...3 23 Figure 3 27 ODD Module 4 Remove 4 screws to separate the ODD from the cage Figure 3 28 ODD Module ...
Страница 100: ...3 24 Figure 3 29 ODD Module Table 3 9 Screws Step Screw Quantity Screw Type ODD Removal M2 2 4 ...
Страница 103: ...3 27 Figure 3 34 Speaker ...
Страница 105: ...3 29 Figure 3 37 Heatsink ...
Страница 108: ...3 32 Figure 3 42 Convert Board ...
Страница 110: ...3 34 Figure 3 45 OSD Board ...
Страница 112: ...3 36 Figure 3 48 VGA Card ...
Страница 114: ...3 38 Figure 3 51 VGA Bracket ...
Страница 116: ...3 40 Figure 3 54 WLAN Card Figure 3 55 WLAN Card ...
Страница 118: ...3 42 Remove the CPU 0 1 Remove CPU from the LGA socket of motherboard Figure 3 58 CPU Figure 3 59 CPU ...
Страница 126: ...3 50 Table 3 23 Screws Step Screw Quantity Screw Type Front Stand Middle Bracket Removal M3 6 4 ...
Страница 129: ...3 53 Remove the Cushion Tape 0 1 Tear off 2 pieces of cushion tape from 2 bulges of base pan Figure 3 79 Cushion Tape ...
Страница 130: ...3 54 Remove the Thermal Pads 0 1 Tear off 4 thermal pads from the bulges of base pan Figure 3 80 Thermal Pads ...
Страница 131: ...3 55 Remove the LVDS Cable 0 1 Release the latches to disconnect LVDS cable from LCD panel Figure 3 81 LVDS Cable ...
Страница 133: ...3 57 Figure 3 84 Base Pan ...
Страница 136: ...3 60 Remove the IR Cable 0 1 Lift to remove the IR cable from front bezel Figure 3 89 IR Cable ...
Страница 138: ...3 62 Reassembly Procedure 0 Reassembly Flowchart 0 Figure 3 92 Reassembly Flowchart ...
Страница 140: ...3 64 Table 3 26 Screws Step Screw Quantity Screw Type Front Bezel Replacement M3 5 10 ...
Страница 149: ...3 73 Replace the Cushion Tape 0 1 Adhere 2 cushion tapes on 2 bulges of base pan Figure 3 108 Cushion Tape ...
Страница 151: ...3 75 Figure 3 111 Base Pan Table 3 28 Screws Step Screw Quantity Screw Type Base Pan Replacement M3 5 18 ...
Страница 156: ...3 80 Table 3 31 Screws Step Screw Quantity Screw Type Front Stand Left Bracket Replacement M3 5 3 M3 6 2 ...
Страница 158: ...3 82 Figure 3 122 Replace CPU Step 2 Figure 3 123 Replace CPU Step 3 ...
Страница 159: ...3 83 Figure 3 124 Replace CPU Step 4 Figure 3 125 Replace CPU Step 5 ...
Страница 160: ...3 84 Figure 3 126 Replace CPU Step 6 ...
Страница 165: ...3 89 Figure 3 133 WLAN Card ...
Страница 167: ...3 91 Figure 3 136 VGA Holder ...
Страница 171: ...3 95 Figure 3 143 Conductive Fabric ...
Страница 174: ...3 98 Figure 3 148 ODD Module Table 3 38 Screws Step Screw Quantity Screw Type ODD Module Replacement M3 5 1 ...
Страница 180: ...3 104 Figure 3 159 Heatsink Table 3 41 Screws Step Screw Quantity Screw Type Heatsink Replacement M3 5 1 ...
Страница 188: ...3 112 Table 3 47 Screws Step Screw Quantity Screw Type PCT Touch Cable Replacement M3 5 1 ...
Страница 193: ...3 117 Figure 3 179 ODD Bezel ...
Страница 195: ...CHAPTER 4 Troubleshooting ...
Страница 204: ...4 10 Troubleshooting 3 Once firmware update is completed press any key to reboot the system ...
Страница 210: ...4 16 Troubleshooting Click the 25 points shown in the screen with the touch pen ...
Страница 213: ...Troubleshooting 4 19 ...
Страница 218: ...4 24 Troubleshooting ...
Страница 219: ...CHAPTER 5 Jumper and Connector Locations ...
Страница 220: ...5 2 Jumper Setting 5 5 Setting Jumper 5 5 ...
Страница 221: ...Jumper and Connector Locations 5 3 Jumper and Connector Locations ...
Страница 224: ...5 6 Jumper and Connector Locations ...
Страница 225: ...CHAPTER 6 FRU List ...
Страница 226: ...6 2 AZS600_Pt Exploded Diagrams 6 4 FRU List 6 7 ...