Troubleshooting
4-7
Bootblock Recovery Code Checkpoints
0
The Bootblock recovery code gets control when the BIOS determines that a BIOS recovery
needs to occur because the user has forced the update or the BIOS checksum is corrupt. The
following table describes the type of checkpoints that may occur during the Bootblock
recovery portion of the BIOS.
NOTE:
NOTE
:
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
D5
Bootblock code is copied from ROM to lower system memory and control
is given to it. BIOS now executes out of RAM. Copies compressed boot
block code to memory in right segments. Copies BIOS from ROM to RAM
for faster access. Performs main BIOS checksum and updates recovery
status accordingly.
D6
Both key sequence and OEM specific method is checked to determine if
BIOSrecovery is forced. Main BIOS checksum is tested. If BIOS
recovery is necessary,control flows to checkpoint E0. See Bootblock
Recovery Code Checkpoints sectionfor more information.
D7
Restore CPUID value back into register. The Bootblock-Runtime
interface module is moved to system memory and control is given to it.
Determine whether to execute serial flash.
D8
The Runtime module is uncompressed into memory. CPUID information
is stored in memory.
D9
Store the Uncompressed pointer for future use in PMM. Copying Main
BIOS into memory. Leaves all RAM below 1MB Read-Write including
E000 and F000 shadow areas but closing SMRAM.
DA
Restore CPUID value back into register. Give control to BIOS POST
(ExecutePOSTKernel).See POST Code Checkpoints section of document
for more information.
DC
System is waking from ACPI S3 state.
E1-E8 ECEE
OEM memory detection/configuration error. This range is reserved for
chipset vendors & system manufacturers. The error associated with this
value may be different from one platform to the next.
Table 4-2.
Checkpoint
Description
Summary of Contents for Aspire Z5771
Page 1: ...Acer AZ5770 AZ5771 SERVICEGUIDE ...
Page 2: ...ii ...
Page 6: ...ii vi ...
Page 7: ...CHAPTER 1 Hardware Specifications ...
Page 26: ...1 20 Hardware Specifications and Configurations M B Placement 0 ...
Page 28: ...1 22 Hardware Specifications and Configurations Internal header pin definition 0 ...
Page 29: ...Hardware Specifications and Configurations 1 23 Block Diagram 0 ...
Page 30: ...1 24 Hardware Specifications and Configurations ...
Page 31: ...CHAPTER 2 System Utilities ...
Page 48: ...2 18 System Utilities 8 Flash BIOS is finished ...
Page 52: ...2 22 System Utilities 10 Flash BIOS is finished ...
Page 61: ...System Utilities 2 31 12 Select Yes and press Enter key 13 Flash BIOS is finished ...
Page 64: ...2 34 System Utilities 11 Select Yes and press Enter key 12 Flash BIOS is finished ...
Page 67: ...System Utilities 2 37 ...
Page 71: ...System Utilities 2 41 ...
Page 72: ...2 42 System Utilities ...
Page 73: ...CHAPTER 3 System Disassembly and Assembly ...
Page 76: ...3 4 ...
Page 84: ...3 12 System Disassembly and Assembly First open one top side then open the other top side ...
Page 95: ...System Disassembly and Assembly 3 23 Removing the Display Card 0 ...
Page 102: ...3 30 System Disassembly and Assembly ID Size Quantity Screw Type M3X5L B 3 ...
Page 105: ...System Disassembly and Assembly 3 33 Removing the CPU 0 ...
Page 108: ...3 36 System Disassembly and Assembly ID Size Quantity Screw Type M3X5L B 3 ...
Page 120: ...3 48 System Disassembly and Assembly Unplug the LCD power cable Take out the LCD with bracket ...
Page 130: ...3 58 System Disassembly and Assembly Lock all the latch Plug the LVDS cable ...
Page 148: ...3 76 System Disassembly and Assembly Lock 2 VGA locks ...
Page 165: ...System Disassembly and Assembly 3 93 ID Size Quantity Screw Type M3X5L B 1 N A 4 ...
Page 171: ...System Disassembly and Assembly 3 99 Install the hinge cover ...
Page 175: ...CHAPTER 4 Troubleshooting ...
Page 190: ...4 16 Troubleshooting Pressing the 25 calibration points in proper hole by using the stylus ...
Page 194: ...4 20 Troubleshooting ...
Page 195: ...CHAPTER 5 Jumper and Connector Locations ...
Page 196: ...5 2 Jumper Setting 5 4 Setting Jumper 5 4 ...
Page 197: ...Jumper and Connector Locations 5 3 Jumper and Connector Locations ...
Page 200: ...5 6 Jumper and Connector Locations ...
Page 201: ...CHAPTER 6 FRU List ...
Page 202: ...6 2 AZ5770 AZ5771 Exploded Diagrams 6 4 FRU List 6 7 ...