Acer Travelmate 2400 Service Guide
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64Chapter 4 23DEBUG_POST_TEST_BATT_CMOS_ SUMTest Battery Fail & check CMOS X-SUM 24DEBUG_HWIO_TEST_DMA_CTLRSUse DMA to copy data for Test the DMA controllers 25DEBUG_HWIO_INIT_8237Initialize 8237A Controller 26DEBUG_POST_INIT_VECSInstall and Initialize interrupt Vectors 27DEBUG_RAM_QUICK_SIZEEnter memory protect mode, use change RAM bank to do RAM Quick Sizing 28DEBUG_RAM_PROT_ENTRY_1Memory protected mode entered safely 29DEBUG_RAM_SIZE_DONETest the basic 640k ram , RAM test completed 2ADEBUG_RAM_PROT_EXITProtected mode exit successful 2BDEBUG_CS_SHADOW_SETUPShadow system and video BIOS to RAM, if CMOS requests shadow 2CDEBUG_VIDEO_EQUIP_INIT_INITGoing To Initialize 6845 CRT controllor 2DDEBUG_VIDEO_BW_SEARCHSearch For Monochrome Adapter 2EDEBUG_VIDEO_COLOR_SEARCHSearch For Color Adapter 2FDEBUG_VIDEO_SIGNONSignon messages displayed 30DEBUG_OEM_CONFIG_KBD_CTLFor special initialize of keyboard controller 31DEBUG_KEYB_PRESENT_TESTTest the keyboard controllor , If Keyboard Present 32DEBUG_KEYB_TEST_IRQ1Clear keyboard buffer and send keyboard command to test Keyboard Interrupt 33DEBUG_KEYB_TEST_CMDSend keyboard command to turn off keyboard LED and Test some Keyboard Command Byte 34DEBUG_RAM_FULL_TESTTEST memory procedure, for test, blank and count all RAM 35DEBUG_RAM_PROT_ENTRY_2Eneter the memory protected mode for test all expand memory 36DEBUG_RAM_TEST_DONETest and blank all memory complete 37DEBUG_RAM_PROT_EXIT_2Switch the memory from Protected mode to real mode 38DEBUG_KEYB_OUTPUT_PORTDisable A20 status for memory test finish 39DEBUG_CS_CACHE_SETUPSetup Cache Controller 3ADEBUG_HWIO_TEST_PERIODICCheck and test the timer 0 interrupt function is Working 3BDEBUG_GEN_CHECK_RTCtest for RTC ticking 3CDEBUG_GEN_INIT_HARD_VECSInstall and initialize the hardware vectors 3DDEBUG_MOUSE_INITClear keyboard buffer for search and Init the Mouse 3EDEBUG_KEYB_SET_LEDS_1Send keyboard command to Update keyboard NUMLOCK status 3FDEBUG_OEM_DEVICE_CONFIGspecial init of COMM and LPT ports 40DEBUG_CS_CONFIG_PORTSConfigure the COMM and LPT ports 41DEBUG_FLOP_INITAccording cmos data to initialize the floppies 42DEBUG_WINI_INITScan and initialize the hard disk, and display the result n crt 43DEBUG_HWIO_ROM_INITSearch option rom from c800 to e000 and to Initialize option ROMs POST CodeMacro NameDescription
Chapter 465 44DEBUG_OEM_INIT_POWER_MANCheck special device initial power management function 45DEBUG_KEYB_SET_LEDS_2Clear keyboard buffer and Update NUMLOCK status 46DEBUG_HWIO_FIND_80X87Test For Coprocessor Installed, and enable coprocessor interrupt 47DEBUG_OEM_LAST_MINUTE_INITRun OEM functions before boot, and enable L1,L2 cache 48DEBUG_MISC_LAUNCH_INT19Post code will finish, ready to run int19 and load OS 49DEBUG_BEGIN_BOOT_CODEInto Int19, to boot from floppy or other boot device 50DEBUG_ACPI_INITInitialize the ACPI function 51DEBUG_PM_CPU_INITPower manager initial & GEYSERVILLE CPU initialize 52DEBUG_USB_HC_INITClear USB status register and Initiallize the USB Hub controller. PCI BIOS -- PCICORE.ASM D0DEBUG_ROM_MAPPED_OKcheck PCI 1.x VGA card rom mapping and rom signature D1DEBUG_SEGMENTENABLE_ COPYSTATE_1enable PCI device use ram area, record in PCI register D2DEBUG_COPY_HROM_RAM_1Enable PCI device ROM copy to RAM, record in PCI register D3DEBUG_SEGMENTENABLE_ READWRITE_1update PCI device segment range attribute registers D4DEBUG_MAP_MEM_1Configure PCI device memory registers D5DEBUG_MAP_IO_1Configure PCI device I/O registers D6DEBUG_MAP_IRQ_1Configure PCI device IRQ assignments D7DEBUG_CONFIG_COM_REG_1turn on PCI device D8DEBUG_REVISION_1PCI 2.x video card rom mapping D9DEBUG_OEM_DEV_CLEANUP_1OEM PCI device defined, and initial OEM rom DADEBUG_PCI_ADDIN_ROM_ DISABLE_1disable add-in rom card decode DBDEBUG_RET_PCI_1PCI device config finish DCDEBUG_SEGMENTENABLE_ COPYSTATE_2enable PCI video device use ram area, record in PCI register DDDEBUG_COPY_HROM_RAM_2Enable PCI video device ROM copy to RAM, record in PCI register DEDEBUG_SEGMENTENABLE_ READWRITE_2update PCI video device segment range attribute registers DFDEBUG_MAP_MEM_2configure PCI video device memory registers E0DEBUG_MAP_IO_2configure PCI video device I/O registers E1DEBUG_MAP_IRQ_2configure PCI video device IRQ assignments E2DEBUG_CONFIG_COM_REG_2turn on PCI video device E3DEBUG_REVISION_2PCI 2.x video rom mapping E4DEBUG_OEM_DEV_CLEANUP_2OEM PCI video device defined, and initial OEM rom E5DEBUG_PCI_ADDIN_ROM_ DISABLE_2disable PCI video device add-in rom card decode POST CodeMacro NameDescription
66Chapter 4 E6DEBUG_RET_PCI_2PCI device config finish E7DEBUG_BRIDGE_HUNTSearch for PCI bridge controllor device E8DEBUG_PCI_IDE_FINDSearch IDE controllors on the PCI bus, and config the IDE controllors E9DEBUG_CB_CONFIGstart of cardbus config PNP BIOS -- PNPINIT.ASM A1DEBUG_PNP_ENABLE_VERIFY_RT DATAEnable and Verify R/W Status for PNP BIOS Runtime Data Area A2DEBUG_PNP_GET_VERIFY_NVRAMGet and Verify R/W Status for PNP BIOS NVRAM data area A3DEBUG_PNP_SYSTEM_NODESResolve System Nodes with the CMOS settings A4DEBUG_PNP_INITIALIZE_RTDATAInitialize variable in the PNP BIOS Runtime Data area A5DEBUG_PNP_HOOK_INT15Hook INT 15 A6DEBUG_PNP_SET_COPY_AREAcopy and setup PnP BIOS sytem node A7DEBUG_PNP_OEM_LATE_HOOKAllow the OEM any Last Minute Hooks A8DEBUG_PNP_WRITE_PROTECT_R T_DATWrite protect RTData Area and NVRAM Copy Buffer, and make runtime data checksum A9DEBUG_PNP_INIT_RETURNPNP BIOS initialize finish General SMI Entry/Exit Code -- SMICHIP.ASM C0dSMI_ENTRYSMI procedure entry point C1dSMI_EXITSMI procedure exit C2dSMI_APM_ENTRYAPM MODE SMI procedure entry point C3dSMI_APM_EXITAPM MODE SMI procedure exit Software SMI request Codes -- SWSHELL.ASM C4dSMI_SWEXEFNSoftWare SMI function execution C5dSMI_HWEXEFNHardWare SMI function execution POST CodeMacro NameDescription
Chapter 467 Index of Symptom-to-FRU Error Message LCD-Related Symptoms Symptom / ErrorAction in Sequence LCD backlight doesnt work First, plug a monitor to CRT port. Next, enter BIOS utility to running “Load Default Settings” then reboot the system. Reconnect the LCD connectors. Keyboard (if the brightness function key doesnt work). LCD cable LCD inverter LCD Main board LCD is too dark LCD brightness cannot be adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then reboot system. Reconnect the LCD connectors. Keyboard (if the brightness function key doesnt work). LCD cable LCD inverter LCD Main board Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed LCD has extra horizontal or vertical lines displayed.Reconnect the LCD cable LCD cable LCD Main board Indicator-Related Symptoms Symptom / ErrorAction in Sequence Indicator incorrectly remains off or on, but system runs correctlyMain board HDD/CD-ROM active indicators cannot work HDD/CD-ROM drive Device driver Main board Power-Related Symptoms Symptom / ErrorAction in Sequence Power shuts down during operation Power source (battery pack and power adapter). See “Power System Check” on page 59. Battery pack AC adapter See if the thermal module is overheat (Heat sink or fan). Main board The system cannot power-on. Power source (battery pack and power adapter). See “Power System Check” on page 59. Battery pack Power adapter CPU Main board The system cannot power-off. In Windows XP operating system, hold and press the power switch for more than 4 seconds. If the system can power off, then the main board is OK. Verify OS in the HDD. Main board
68Chapter 4 Battery can’t be charged or discharged See “Check the Battery Pack” on page 60. Battery pack Main board System hang during POST ODD/HDD/FDD/RAM module Main board PCMCIA-Related Symptoms Symptom / ErrorAction in Sequence System cannot detect the PC Card (PCMCIA) PCMCIA slot assembly Main board PCMCIA slot pin is damaged. PCMCIA slot assembly PC Card cannot be inserted or ejected Check if the PCMCIA slot is blocked Main board Memory-Related Symptoms Symptom / ErrorAction in Sequence Memory count (size) appears different from actual size.Enter BIOS Setup Utility to execute “Load Default Settings” then reboot system. RAM module Main board Check BIOS revision System can power on, but you hear two long beeps: “B--, B--” and the LCD is blank.Reinsert DIMM DIMM Main board Speaker-Related Symptoms Symptom / ErrorAction in Sequence In Windows, multimedia programs, no sound comes from the computer. OS volume control Audio driver Speaker Main board Internal speakers make noise or emit no sound. Speaker Main board Microphone cannot work Audio driver Volume control in Windows XP Main board Power Management-Related Symptoms Symptom / ErrorAction in Sequence The system will not enter hibernation mode Power option in Windows XP Hard disk drive Main board The system doesn’t enter standby mode after closing the lid of the portable computer.Driver of Power Option Properties Lid close switch in upper case Main board Power-Related Symptoms Symptom / ErrorAction in Sequence
Chapter 469 The system doesnt resume from hibernation/ standby mode.Connect AC adapter then check if the system resumes from Standby/Hibernation mode. Check if the battery is low. Hard disk drive Main board The system doesnt resume from standby mode after opening the lid of the portable computer.LCD cover switch Main board Battery fuel gauge in Windows doesn’t go higher than 90%. Refresh battery (continue use battery until power off, then charge battery). Battery pack Main board System hangs intermittently. Reconnect hard disk/CD-ROM drives. Main board Peripheral-Related Symptoms Symptom / ErrorAction in Sequence System configuration does not match the installed devices. Enter BIOS Setup Utility to execute “Load Setup defaults”, then reboot system. Reconnect hard disk/CD-ROM drives/FDD or other peripherals. Main board External display does not work correctly. Press Fn+F5, LCD/CRT/Both display switching Keyboard Main board USB does not work correctly Main board Print problems. Enter BIOS Setup Utility to execute “Load Default Settings” then reboot the system. Run printer self-test. Printer driver Printer cable Printer Main board Parallel port device problems Enter BIOS Setup Utility to execute “Load Default Settings” then reboot the system. Device driver Device cable Device Main board Keyboard/Touchpad-Related Symptoms Symptom / ErrorAction in Sequence Keyboard (one or more keys) does not work. Reconnect the keyboard cable. Keyboard Main board Touchpad does not work. Reconnect touchpad cable. Touchpad board Main board Power Management-Related Symptoms Symptom / ErrorAction in Sequence
70Chapter 4 NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined Problems” on page 72. Modem/LAN-Related Symptoms Symptom / ErrorAction in Sequence Internal modem does not work correctly. Phone cable Driver Reconnect the Internal modem cable to the main board tightly. Main board Internal LAN does not work correctly Lan cable Driver Main board
Chapter 471 Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1.Run the diagnostic test for the system board in loop mode at least 10 times. 2.If no error is detected, do not replace any FRU. 3.If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
72Chapter 4 Undetermined Problems The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU). NOTE: Verify that all attached devices are supported by the computer. NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Check” on page 59): 1.Power-off the computer. 2.Visually check them for damage. If any problems are found, replace the FRU. 3.Remove or disconnect all of the following devices: TNon-Acer devices TPrinter, mouse, and other external devices TBattery pack THard disk drive TDIMM TPC Cards 4.Power-on the computer. 5.Determine if the problem has changed. 6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU: TSystem board TLCD assembly
Chapter 573 Top View SW3 Power Switch SW1 Lid Swtich JP1 Bluetooth Connector JP5 Touchpad Connector SW2 E-mail Switch JP4 Keyboard Connector SW4 Internet Browser Switch JP42 Speaker Connector SW5 Emanager Switch JP7 PCMCIA Slot SW6 User Programmable Switch JP10 Microphone Connector 2 JP1 2 JP42 JP5 2 KQ: JP1022 JP42 2 JP7 2 2 SW1 SW2 SW3SW4 SW5 SW6 Jumper and Connector Locations Chapter 5