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Acer Aspire 4310 Service Guide

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    							Chapter 4101
    *  If the BIOS detects error 2C, 2E, or 3O (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.
    BIOS Beep Codes for Boot Block in Flash ROM
    C4h Initialize system error handler
    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
    CodeBeepsFor Boot Block in Flash ROM
    E0h Initialize the chipset
    E1h Initialize the bridge
    E2h Initialize the CPU
    E3h Initialize the 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 Multiprocessor
    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
    CodeBeepsPOST Routine Description 
    						
    							102Chapter 4
    Index of Symptom-to-FRU Error Message
    LCD-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    LCD backlight doesnt work
    LCD is too dark
    LCD brightness cannot be adjusted
    LCD contrast cannot be adjusted
    TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
    system.
    TReconnect the LCD connectors.
    TKeyboard (if contrast and brightness function key doesnt 
    work).
    TLCD inverter ID
    TLCD cable
    TLCD inverter board
    TLCD
    TMainboard
    Unreadable LCD screen 
    Missing pels in characters
    Abnormal screen 
    Wrong color displayed
    TReconnect the LCD connector
    TLCD inverter ID
    TLCD cable
    TLCD inverter board
    TLCD
    TMainboard
    LCD has extra horizontal or vertical lines 
    displayed.
    TLCD inverter ID
    TLCD inverter board
    TLCD cable
    TLCD
    TMainboard
    Indicator-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    Indicator incorrectly remains off or on, but 
    system runs correctly
    TReconnect the LCD inverter board.
    TMainboard
    Power-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    Power shuts down during operation
    TPower source (battery pack and power adapter). See “Power 
    System Check” on page 93. 
    TBattery pack
    TPower adapter
    THard disk drive & battery connection board
    TMainboard
    The system doesn’t power-on.
    TPower source (battery pack and power adapter). See “Power 
    System Check” on page 93. 
    TBattery pack
    TPower adapter
    THard disk drive & battery connection board
    TMainboard 
    						
    							Chapter 4103
    The system doesn’t power-off.TPower source (battery pack and power adapter). See “Power 
    System Check” on page 93. 
    THold and press the power switch for more than 4 seconds.  
    TMainboard
    Battery can’t be charged
    TSee “Check the Battery Pack” on page 93. 
    TBattery pack
    TMainboard
    PCMCIA-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    System cannot detect the PC Card 
    (PCMCIA) 
    TPCMCIA slot assembly
    TMainboard
    PCMCIA slot pin is damaged. PCMCIA slot assembly
    Memory-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    Memory count (size) appears different from 
    actual size.
    TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
    system.
    TDIMM
    TMainboard
    Speaker-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    In Windows, multimedia programs, no 
    sound comes from the computer. 
    TAudio driver
    TSpeaker
    TMainboard
    Internal speakers make noise or emit no 
    sound.
    TSpeaker
    TMainboard
    Power Management-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    The system will not enter hibernation
    TSee “Save to Disk (S4)” on page 44.
    TKeyboard (if control is from the keyboard)
    THard disk drive
    TMainboard
    The system doesnt enter hibernation mode 
    and four short beeps every minute.
    TPress Fn+o and see if the computer enters hibernation 
    mode.
    TTouchpad
    TKeyboard
    THard disk connection board
    THard disk drive
    TMainboard
    The system doesn’t enter standby mode 
    after closing the LCD
    TSee “Save to Disk (S4)” on page 44.
    TMainboard Power-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence 
    						
    							104Chapter 4
    The system doesnt resume from 
    hibernation mode.TSee “Save to Disk (S4)” on page 44.
    THard disk connection board
    THard disk drive
    TMainboard
    The system doesnt resume from standby 
    mode after opening the LCD.
    TSee “Save to Disk (S4)” on page 44.
    TMainboard
    Battery fuel gauge in Windows doesn’t go 
    higher than 90%. 
    TRemove battery pack and let it cool for 2 hours.
    TRefresh battery (continue use battery until power off, then 
    charge battery).
    TBattery pack
    TMainboard
    System hangs intermittently.
    TReconnect hard disk/CD-ROM drives. 
    THard disk connection board
    TMainboard
    Peripheral-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    System configuration does not match the 
    installed devices. 
    TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
    system.
    TReconnect hard disk/CD-ROM/diskette drives.
    External display does not work correctly.
    TPress Fn+F5 to switch to LCD or CRT
    TMainboard
    USB does not work correctly
    TMainboard
    Print problems.
    TRun printer self-test.
    TPrinter driver
    TPrinter cable
    TPrinter
    TMainboard
    Keyboard/Touchpad-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    Keyboard (one or more keys) does not 
    work.
    TReconnect the keyboard cable.
    TKeyboard
    TMainboard
    Touchpad does not work.
    TReconnect touchpad cable.
    TTouchpad board
    TMainboard Power Management-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence 
    						
    							Chapter 4105
    NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
    Problems” on page 107. Modem-Related Symptoms
    Symptom / ErrorCheck or do the following in sequence
    Internal modem does not work correctly.
    TModem phone port
    TModem combo board
    TMainboard 
    						
    							106Chapter 4
    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 advanced diagnostic test for the mainboard 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.  
    						
    							Chapter 4107
    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.  
    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 93.)
    Follow procedures below to isolate the failing FRU. Do not isolate non-defective FRU.
    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 
    TCD/DVD-ROM drive 
    TPC cards
    4.Power on the computer.
    5.Determine if the problem has been resolved.
    6.If the problem does not recur, reconnect the removed devices one at a time until you find the failed FRU.
    7.If the problem persists, replace the following FRU one at a time. Do not replace a non-defective FRU.
    TSystem board
    TLCD assembly 
    						
    							Chapter 5109
    System Block Diagram
    System Block Diagram and Connector Locations
    Chapter 5 
    						
    							11 0Chapter 5
    Board Layout
    Top View
    #Item#Item
    1 LCD connector 6 Power board cable connector
    2 Internal microphone cable connector 7 USB board cable connector
    3 Speaker cable connector 8 ExpressCard/54 slot
    4 Keyboard cable connector 9 ICH8-M chipset (south bridge)
    5 Touchpad cable connector 10 Launch board cable connector 
    						
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