Acer Aspire 4332 Service Guide
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Acer Aspire 4732Z/4332 Service Guide 53 Removing the LCD Panel 1.Perform the “Removing the LCD Bezel” procedure on page 51. 2.Detach the LCD cable and WLAN antennas from their LCD case latches. 3.Disconnect the CCD board cable. 4.Remove the screws securing the LCD hinges to the LCD case. Ty p eQuantityColorTo r q u ePart Number M2.5 x L52Black3.0 kgf-cm86.00F87.735
54 Acer Aspire 4732Z/4332 Service Guide 5.Remove the LCD panel from the LCD case. Removing the LCD-CCD Coaxial Cable 1.Perform the “Removing the LCD Panel” procedure on page 53. 2.Detach the CCD end of the LCD-CCD coaxial cable from the LCD panel. 3.Detach the clear adhesive tape protecting the LCD FPC cable connector, then disconnect the cable from the LCD panel PCB.
Acer Aspire 4732Z/4332 Service Guide 55 Removing the LCD Panel Brackets 1.Perform the “Removing the LCD Panel” procedure on page 53. 2.Remove the screws securing the LCD panel brackets. Ty p eQuantityColorTo r q u ePart Number M2 x L38Silver1.6 kgf-cm86.00C07.220 Removing the WLAN Antennas 1.Perform the “Removing the LCD Panel” procedure on page 53. 2.Detach the aluminum foil tabs securing the WLAN antennas. 3.Detach the WLAN antennas from the LCD case.
56 Acer Aspire 4732Z/4332 Service Guide Removing the CCD Board 1.Perform the “Removing the LCD Panel” procedure on page 53. 2.Pry loose the CCD board from the LCD case to remove it. CAUTION: The CCD board is glued to the LCD case. Remove the CCD board only if it is defective.
Acer Aspire 4732Z/4332 Service Guide 57 This chapter list the POST error indicators and BIOS beep codes, as well general troubleshooting instructions. POST Error Indicators When a system error is detected during POST (Power On Self Text), the Setup Utility will switch to diagnostic mode and will either: • Displays a POST error message, or • Emits a series of beep codes POST Error Messages POST error messages tell users what failure the system has detected. Some error messages could be related to a hardware device. Others may indicate a problem with a device configuration. In some cases an error message may include recommendations for troubleshooting or require that you press the Enter key to display recommendations. Follow the instructions on the screen. It is recommended that you correct the error before proceeding, even if the computer appears to boot successfully. The table below lists the messages that the BIOS has defined and can display. If your system displays one of the messages marked below with an asterisk (*), write down the code and message and contact your Acer service provider. IMPORTANT:If your system fails after you make changes in the Setup menus, reboot the computer, enter Setup again and load Setup defaults to correct the error. Error MessagesCheck or do the following in sequence: Stuck KeySee “Keyboard or Auxiliary Input Device Check” section on page 63. System CMOS checksum bad - Default configuration used•RTC battery •Run the BIOS Setup Utility to reconfigure the system time, then reboot system. Real time clock error•RTC battery •Run the BIOS Setup Utility to reconfigure system time, then reboot system. •Mainboard Previous boot incomplete - Default configuration used•Select “Load Setup Defaults” in the BIOS Setup Utility’s Exit menu. •RTC battery •Mainboard Invalid System Configuration Data•Select “Load Setup Defaults” in the BIOS Setup Utility’s Exit menu. •Mainboard Operating system not found•Run the BIOS Setup Utility to check if the fixed disk and drive A are properly identified. •Optical disc drive •Hard disk drive •Mainboard Troubleshooting Chapter 4
58 Acer Aspire 4732Z/4332 Service Guide Power-on indicator turns off and LCD is blank.•Power source (battery pack and power adapter.) See “Power System Check” section on page 64. •Make sure all connectors are connected tightly and correctly. •Reinstall the DIMM. •Mainboard Power-on indicator turns on and LCD is blank. •Power source (battery pack and power adapter.) See “Power System Check” section on page 64. •Reconnect the LCD cable •Hard disk drive •LCD panel •Mainboard Power-on indicator turns on and LCD is blank. POST is visible when using an external CRT. •Reconnect the LCD cable. •LCD panel •Mainboard Power-on indicator turns on and a blinking cursor is during POST. •Make sure all connectors are connected tightly and correctly. •Mainboard Failure Fixed Disk•Reconnect the HDD connector. •Select “Load Setup Defaults” in the BIOS Setup Utility’s Exit menu. •Hard disk drive •Mainboard No beep, power-on indicator turns off and LCD is blank.•Power source (battery pack and power adapter). See “Power System Check” on page 64 •Make sure all connectors are connected tightly and correctly. •Reconnect the DIMM. •Mainboard No beep, power-on indicator turns on and LCD is blank.•Power source (battery pack and power adapter). See “Power System Check” on page 64 •Reconnect the LCD cable. •Hard disk drive •LCD cable •LCD panel •Mainboard No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. •Reconnect the LCD cable. •LCD panel •Mainboard No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST.•Make sure all connectors are connected tightly and correctly. •Mainboard No beep during POST but system runs correctly.•Speaker •Mainboard Error MessagesCheck or do the following in sequence:
Acer Aspire 4732Z/4332 Service Guide 59 POST Beep Codes When no POST error message is displayed but the computer stops during POST, listen for beep codes. CodeBeepsPOST Routine Description 02hVerify Real Mode 03hDisable Non-Maskable Interrupt (NMI) 04hGet CPU type 06hInitialize system hardware 08hInitialize chipset with initial POST values 09hSet IN POST flag 0AhInitialize CPU registers 0BhEnable CPU cache 0ChInitialize caches to initial POST values 0EhInitialize I/O component 0FhInitialize the local bus IDE 10hInitialize Power Management 11 hLoad alternate registers with initial POST values 12hRestore CPU control word during warm boot 13hInitialize PCI Bus Mastering devices 14hInitialize keyboard controller 16h1-2-2-3BIOS ROM checksum 17hInitialize cache before memory autosize 18h8254 timer initialization 1Ah8237 DMA controller initialization 1ChReset Programmable Interrupt Controller 20h1-3-1-1Test DRAM refresh 22h1-3-1-3Test 8742 Keyboard Controller 24hSet ES segment register to 4 GB 26hEnable A20 line 28hAutosize DRAM 29hInitialize POST Memory Manager 2AhClear 215 KB base RAM 2Ch1-3-4-1RAM failure on address line xxxx* 2Eh1-3-4-3RAM failure on data bits xxxx* of low byte of memory bus 2FhEnable cache before system BIOS shadow 30h1-4-1-1RAM failure on data bits xxxx* of high byte of memory bus 32hTest CPU bus-clock frequency 33hInitialize Phoenix Dispatch Manager 36hWarm start shut down 38hShadow system BIOS ROM 3AhAutosize cache 3ChAdvanced configuration of chipset registers 3DhLoad alternate registers with CMOS values 42hInitialize interrupt vectors
60 Acer Aspire 4732Z/4332 Service Guide 45hPOST device initialization 46h2-1-2-3Check ROM copyright notice 48hCheck video configuration against CMOS 49hInitialize PCI bus and devices 4AhInitialize all video adapters in system 4BhQuietBoot start (optional) 4ChShadow video BIOS ROM 4EhDisplay BIOS copyright notice 50hDisplay CPU type and speed 51hInitialize EISA board 52hTest keyboard 54hSet key click if enabled 58h2-2-3-1Test for unexpected interrupts 59hInitialize POST display service 5AhDisplay prompt “Press F2 to enter SETUP” 5BhDisable CPU cache 5ChTest RAM between 512 and 640 KB 60hTest extended memory 62hTest extended memory address lines 64hJump to User Patch1 66hConfigure advanced cache registers 67hInitialize Multi Processor APIC 68hEnable external and CPU caches 69hSetup System Management Mode (SMM) area 6AhDisplay external L2 cache size 6BhLoad custom defaults (optional) 6ChDisplay shadow-area message 6EhDisplay possible high address for UMB recovery 70hDisplay error messages 72hCheck for configuration errors 76hCheck for keyboard errors 7ChSet up hardware interrupt vectors 7EhInitialize coprocessor if present 80hDisable onboard Super I/O ports and IRQs 81hLate POST device initialization 82hDetect and install external RS232 ports 83hConfigure non-MCD IDE controllers 84hDetect and install external parallel ports 85hInitialize PC-compatible PnP ISA devices 86hRe-initialize onboard I/O ports 87hConfigure Motherboard Configurable Devices (optional) 88hInitialize BIOS Data Area 89hEnable Non-Maskable Interrupts (NMIs) CodeBeepsPOST Routine Description
Acer Aspire 4732Z/4332 Service Guide 61 8AhInitialize Extended BIOS Data Area 8BhTest and initialize PS/2 mouse 8ChInitialize floppy controller 8FhDetermine number of ATA drives (optional) 90hInitialize hard-disk controllers 91hInitialize local-bus hard-disk controllers 92hJump to UserPatch2 93hBuild MPTABLE for multi-processor boards 95hInstall CD-ROM for boot 96hClear huge ES segment register 97hFixup Multiprocessor table 98h1-2Search for option ROMs. One long, two short beeps on checksum failure. 99hCheck for SMART drive (optional) 9AhShadow option ROMs 9ChSet up Power Management 9DhInitialize security engine (optional) 9EhEnable hardware interrupts 9FhDetermine number of ATA and SCSI drives A0hSet time of day A2hCheck key lock A4hInitialize Typematic rate A8hErase F2 prompt AAhScan for F2 key stroke AChEnter SETUP AEhClear Boot flag B0hCheck for errors B2hPOST done- prepare to boot operating system B4h1One short beep before boot B5hTerminate QuietBoot (optional) B6hCheck password (optional) B9hPrepare Boot BAhInitialize DMI parameters BBhInitialize PnP Option ROMs BChClear parity checkers BDhDisplay MultiBoot menu BEhClear screen (optional) BFhCheck virus and backup reminders C0hTry to boot with INT 19 C1hInitialize POST Error Manager (PEM) C2hInitialize error logging C3hInitialize error display function C4hInitialize system error handler CodeBeepsPOST Routine Description
62 Acer Aspire 4732Z/4332 Service Guide BIOS Beep Codes for Boot Block in Flash ROM CodeBeepsFor Boot Block in Flash ROM E0hInitialize the chipset E1hInitialize the bridge E2hInitialize the CPU E3hInitialize the system timer E4hInitialize system I/O E5hCheck force recovery boot E6hChecksum BIOS ROM E7hGo to BIOS E8hSet Huge Segment E9hInitialize Multiprocessor EAhInitialize OEM special code EBhInitialize PIC and DMA EChInitialize Memory type EDhInitialize Memory size EEhShadow Boot Block EFhSystem memory test F0hInitialize interrupt vectors F1hInitialize Run Time Clock F2hInitialize video F3hInitialize System Management Mode F4h1Output one beep before boot F5hBoot to Mini DOS F6hClear Huge Segment F7hBoot to Full DOS C5hPnPnd dual CMOS (optional) C6hInitialize notebook docking (optional) C7hInitialize notebook docking late C8hForce check (optional) C9hExtended checksum (optional) D2hUnknown interrupt CodeBeepsPOST Routine Description