![background image](http://html.mh-extra.com/html/acer/aspire-z5751/aspire-z5751_service-manual_6151148.webp)
138
Chapter 4
* If the BIOS detects error 2C, 2E, or 30 (base 512K RAM error), it displays an additional word-bitmap (xxxx)
indicating the address line or bits that failed. For example, "2C 0002" means address line 1 (bit one set) has
failed. "2E 1020" means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Note that error
30 cannot occur on 386SX systems because they have a 16 rather than 32-bit bus. The BIOS also sends the
bitmap to the port-80 LED display. It first displays the check point code, followed by a delay, the high-order
byte, another delay, and then the low-order byte of the error. It repeats this sequence continuously.
C5h
PnPnd dual CMOS (optional)
C6h
Initialize notebook docking (optional)
C7h
Initialize notebook docking late
C8h
Force check (optional)
C9h
Extended checksum (optional)
D2h Unknown
interrupt
Code
Beeps
For Boot Block in Flash ROM
E0h
Initialize the chipset
E1h
Initialize the bridge
E2h
Initialize the CPU
E3h Initialize
system
timer
E4h Initialize
system
I/O
E5h
Check force recovery boot
E6h Checksum
BIOS
ROM
E7h Go
to
BIOS
E8h
Set Huge Segment
E9h
Initialize Multi Processor
EAh
Initialize OEM special code
EBh
Initialize PIC and DMA
ECh
Initialize Memory type
EDh
Initialize Memory size
EEh Shadow
Boot
Block
EFh System
memory
test
F0h Initialize
interrupt
vectors
F1h
Initialize Run Time Clock
F2h Initialize
video
F3h
Initialize System Management Mode
F4h
1
Output one beep before boot
F5h
Boot to Mini DOS
F6h
Clear Huge Segment
F7h
Boot to Full DOS
Code
Beeps
POST Routine Description
Содержание Aspire Z5751
Страница 6: ...VI ...
Страница 10: ...X Table of Contents ...
Страница 14: ...4 Chapter 1 System Block Diagram ...
Страница 34: ...24 Chapter 1 ...
Страница 72: ...62 Chapter 3 4 Disconnect the following four cables from the Mainboard A B C D ...
Страница 85: ...Chapter 3 75 4 Using both hands lift the Thermal Module clear of the Mainboard ...
Страница 87: ...Chapter 3 77 4 Lift the CPU Fan clear of the Mainboard as shown ...
Страница 93: ...Chapter 3 83 5 Lift the LCD Panel clear of the module ...
Страница 101: ...Chapter 3 91 9 The Antennas and cables appear as shown when correctly installed ...
Страница 106: ...96 Chapter 3 2 Replace the four screws and screw caps provided ...
Страница 111: ...Chapter 3 101 5 Replace the FFC and press down as indicated to secure it to the Upper Cover ...
Страница 115: ...Chapter 3 105 2 Press down around the edges to secure it in place 3 Replace the nine screws in the Upper Cover as shown ...
Страница 116: ...106 Chapter 3 4 Replace the three screw caps as shown 5 Connect the following cables to the Mainboard A B C D ...
Страница 122: ...112 Chapter 3 17 Replace the two screws securing the LCD Module to the Lower Cover ...
Страница 130: ...120 Chapter 3 ...
Страница 154: ...144 Chapter 5 ...
Страница 156: ...146 Chapter 6 Aspire 5517 Exploded Diagrams Main Assembly 1 2 3 4 5 ...
Страница 169: ...Chapter 6 159 ...
Страница 178: ...168 Appendix C ...
Страница 182: ...172 ...