Acer Aspire 5940g Service Guide
Here you can view all the pages of manual Acer Aspire 5940g Service Guide. The Acer manuals for Notebook are available online for free. You can easily download all the documents as PDF.
Page 161
Chapter 4151 Post Codes These tables describe the POST codes and descriptions during the POST. Chipset POST Codes The following table details the chipset POST codes and functions used in the POST. Port 80 Code Driver Name Port 80 CodeDriver Name 01 PeiEventLog 41 StatusCode 02 OemServices 42 Variable 03 SioInit CF SmmVariable 04 MonoStatusCode 43 EmuVariable 08 PentiumMCpuPeim A2 TcgDxe 09 PlatformStage1 A3 PhysicalPresence 0A Variable AE TpmDriver 0B IchInit AE TcgSmm 0D...
Page 162
152Chapter 4 Port 80 Code Driver Name Port 80 CodeDriver Name C0 SmmAccess 7F Font (French) 46 PciHostBridge 8D Font (Chinese) 47 PciExpress B1 UnicodeCollation CD GmchMbi 5A ConPlatform 48 IchInit 5D ConSplitter 49 IdeController 79 GraphicsConsole 4A SataController 7A Terminal 4B IchSmbusLight 5E VgaClass C1 SmmControl 5B SaveMemoryConfig C8 Ich7MSmmDispatcher 5C AcpiSupport 4C IsaAcpiDriver 53 AcpiPlatform 52 Fwh 5F DataHub CE SmmFwh 7B DataHubStdErr 54...
Page 163
Chapter 4153 0AhInitialize 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 8254timer initialization 1Ah 8237DMA controller...
Page 164
154Chapter 4 51hInitialize EISA board 52h Test keyboard 54h Set key click if enabled 58h 2-2-3-1 Test for unexpected interrupts 59h Initialize POST display service 5Ah Display prompt Press F2 to enter SETUP 5Bh Disable CPU cache 5Ch Test RAM between 512 and 640 KB 60h Test extended memory 62h Test extended memory address lines 64h Jump to UserPatch1 66h Configure advanced cache registers 67h Initialize Multi Processor APIC 68h Enable external and CPU caches 69h Setup System Management Mode (SMM) area 6Ah...
Page 165
Chapter 4155 96hClear huge ES segment register 97h Fixup Multi Processor table 98h 1-2Search for option ROMs. One long, two short beeps on checksum failure 99h Check for SMART Drive (optional) 9Ah Shadow option ROMs 9Ch Set up Power Management 9Dh Initialize security engine (optional) 9Eh Enable hardware interrupts 9Fh Determine number of ATA and SCSI drives A0h Set time of day A2h Check key lock A4h Initialize Typematic rate A8h Erase F2 prompt AAh Scan for F2 key stroke ACh Enter SETUP AEh Clear Boot...
Page 166
156Chapter 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 bi ts 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 th...
Page 167
Chapter 5157 Jumper and Connector Locations Top View ItemDescriptionItemDescription J56 Subwoofer Connector JP47 Touch pad Connector SW1 Power button JP33 VR board Connector JP7 Backlight on/off Connector JP54 Digital MIC Connector JLVDS Speaker (Right) Connector SW2 Touch pad lock button JP2 Launch board Connector JP3 board to board Connector JP34 Keyboard backlight Connector JP37 Blue tooth Connector JEXP1 New (Express) card Connec tor JP44 Finger Print Connector JKB1 Keyboard Connector LED11 HDD_LED...
Page 168
158Chapter 5 Bottom View ItemDescriptionItemDescription PCN1 AC-IN Connector JLINE1 LINE IN JACK JRJ45 RJ45 Connector JMIC1 MIC IN JACK JCRT1 CRT Connector JHP1 Head-Phone Jack JP32 Fan Connector JCPU1 CPU Socket JMXM2 MXM Connector JDIMM2 Memory DIMM2 Connector JHDMI1 HDMI Connector JDIMM1 Memory DIMM1 Connector JESATA1 ESATA Connector PJP1 Battery Connector JUSB2 USB Connector JSATA1 HDD Connector JUSB3 USB Connector JSATA2 ODD Connector
Page 169
Chapter 5159 LS-5011P LCD Backlight Board ItemDescription JP1 Backlight on/off Connector
Page 170
160Chapter 5 LS-5012P Launch Board ItemDescription LED1 Backup LED LED2 Bluetooth LED LED3 Wireless LED