Acer Travelmate 4320 Service Guide
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Chapter 491 Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. 1.Obtain the failing symptoms in as much detail as possible. 2.Verify the symptoms by attempting to recreate the failure by running the diagnostic tests or repeating the same operation. 3.Do not use any power sources when performing an assembly or disassembly procedures. 4.If any problems occur, you can perform the following visual inspection before you continue. TPower cords are properly connected and secured. TThere are no obvious shorts or opens. TThere are no burned or heated components. TAll components appear normal. Troubleshooting Chapter 4
92Chapter 4 System Check Procedures External CD/DVD-ROM Drive Check Perform the following procedures to isolate the possible problem a controller, drive, or CD-ROM. NOTE: Make sure that the CD-ROM does not have any label attached to it. The label may damage the drive or cause drive failure. 1.Boot from the diagnostic disc and start the diagnostic programs. 2.See if CD-ROM Test is passed when the program runs the CD-ROM Test. 3.Follow onscreen instructions. If an error occurs, reconnect the drive to the connector on the mainboard. If the error persists, do the following: 1.Reconnect the CD/DVD-ROM drive. 2.Replace the CD/DVD-ROM drive. 3.Replace the mainboard. Keyboard or Auxiliary Input Device Check Remove the external keyboard if the internal keyboard is to be tested. If the internal keyboard does not work or an unexpected error occurs, make sure that the flexible cable extending from the internal keyboard is correctly connected to the mainboard. If the keyboard cable connection is correct, run the Keyboard Test. If the tests detect a keyboard problem, do the following procedures in sequence to correct the problems. Do not replace a non-defective FRU: 1.Reconnect the keyboard cable. 2.Replace the keyboard. 3.Replace the mainboard. The following auxiliary input devices are supported by this computer: TNumeric keypad TExternal keyboard If any of these devices do not function, reconnect the cable and repeat above procedures. Memory Check NOTE: Make sure that the DIMM is properly installed into the connector. A loose connection can cause an error. Do the following: 1.Boot from the diagnostic diskette and start the diagnostic program. 2.Go to the diagnostic memory in the test items. 3.Press F2 in the test items. 4.Follow onscreen instructions.
Chapter 493 Power System Check Do the following: 1.Remove the battery pack. 2.Connect the power adapter and check the power supply. 3.Disconnect the power adapter and install the battery pack; then check that power supply. If you suspect a power problem, see the appropriate power supply check in the following list: T“Check the Power Adapter” on page 93 T“Check the Battery Pack” on page 93 Check the Power Adapter Unplug the power adapter cable from the system and measure the output voltage at the plug of the power adapter cable. 1.If the voltage is not correct, replace the power adapter. 2.If the voltage is within range, do the following: a.Replace the System board. b.If the problem is not resolved, see “Undetermined Problems” on page 107. c.If the voltage is not correct, go to the next step. NOTE: An audible noise from the power adapter does not always indicate a defect. 3.If the power-on indicator does not light up, check if the adapter’s power cord is properly connected to the system. 4.If the operational charge does not work, see “Check the Battery Pack” on page 93. Check the Battery Pack Do the following: Using the software to identify whether a problem occurs while the battery pack during recharge or discharge: 1.Open Power Management in the Control Panel. 2.In Power Meter, confirm if the parameters for Current Power Source and Total Battery Power Remaining are correct. 3.Repeat the steps 1 and 2 for both battery and adapter. Using the hardware to identify whether you should replace the battery pack or not: 1.Power off the system. 2.Remove the battery pack and measure the voltage between terminals one (+) and seven (-). There are seven terminals totally. 3.If the voltage is still less than 7.5 Vdc after recharging, replace the battery. If the battery status indicator does not light up, remove the battery pack . If the charge indicator still does not light up, replace the AC/DC charger board.
94Chapter 4 Touchpad Check If the touchpad doesn’t work, do the following procedures in sequence to correct the problem. Do not replace a non-defective FRU: 1.After rebooting, run Tracking Pad PS2 Mode Driver. For example Syn touch driver. 2.Run utility with the PS/2 mouse function and check if the mouse is working. 3.If the PS/2 mouse does not work, then click if the main board to switch board FPC is connected properly. 4.If the main board to switch board FPC is connected correctly, then check if the FFC on the touch pad PCB is connected properly. 5.If the FFC on the touch pad PCB is connected correctly, check if LS851 JP1 Pin6 = 5V are pules. If yes, then replace switch board. If not, then go to the next step. 6.Replace the touch pad PCB. 7.If the touch pad still does not work, then replace the FPC on Track Pad PCB. After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement will occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem. No actions are necessary to be taken if the pointer movement stops in a short period of time.
Chapter 495 Power-On Self-Test (POST) Error Message The POST error message index lists the error message and their possible causes. NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU replacement does not solve the problem, put the original part back in the computer. Do not replace a non-defective FRU. The error messages are listed in the coming pages to indicate the BIOS signals on the screen and the error symptoms classified by functions. If the symptom is not included on the list, please refer to “Undetermined Problems”. NOTE: Most of the error messages occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured. NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter Setup and install Setup defaults or correct the error.
96Chapter 4 Index of Error Messages Error Message List Error MessagesCheck or do the following in sequence: Stuck Key See “Keyboard or Auxiliary Input Device Check” on page 92. System CMOS checksum bad - Default configuration used TRTC battery. TRun the BIOS Setup Utility to reconfigure the system time, then reboot system. Real time clock error TRTC battery TRun the BIOS Setup Utility to reconfigure system time, then reboot system. TMainboard Previous boot incomplete - Default configuration used TRun “Load Setup Defaults” in BIOS Setup Utility. TRTC battery TMainboard Invalid System Configuration Data TRun “Load Setup Defaults” in BIOS Setup Utility. TMainboard Operating system not found TRun the BIOS Setup Utility to check if the fixed disk and drive A are properly identified. TCD/DVD-ROM drive THard disk drive TMainboard Power-on indicator turns off and LCD is blank. TPower source (battery pack and power adapter.) See “Power System Check” on page 93. TEnsure every connector is connected tightly and correctly. TReconnect the DIMM TMainboard Power-on indicator turns on and LCD is blank. TPower source (battery pack and power adapter.) See “Power System Check” on page 93. TReconnect the LCD connector THard disk drive TLCD cable TLCD inverter TLCD TMainboard Power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. TReconnect the LCD connectors. TLCD cable TLCD inverter TLCD TMainboard Power-on indicator turns on and a blinking cursor shown on LCD during POST. TEnsure every connector is connected tightly and correctly. TMainboard Failure Fixed Disk TReconnect the hard disk drive connector. TRun “Load Setup Defaults” in BIOS Setup Utility. THard disk drive TMainboard
Chapter 497 No beep, power-on indicator turns off and LCD is blank.TPower source (battery pack and power adapter). See “Power System Check” on page 93. TEnsure every connector is connected tightly and correctly. TReconnect the DIMM. TLED board TMainboard No beep, power-on indicator turns on and LCD is blank. TPower source (battery pack and power adapter). See “Power System Check” on page 93. TReconnect the LCD connector THard disk drive TLCD inverter ID TLCD cable TLCD Inverter TLCD TMainboard No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. TReconnect the LCD connectors. TLCD inverter ID TLCD cable TLCD inverter TLCD TMainboard No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST. TEnsure every connector is connected tightly and correctly. TMainboard No beep during POST but system runs correctly. TSpeaker TMainboard Error Message List Error MessagesCheck or do the following in sequence:
98Chapter 4 Phoenix BIOS Beep Codes CodeBeepsPOST Routine Description 02h Verify Real Mode 03h Disable Non-Maskable Interrupt (NMI) 04h Get CPU type 06h Initialize system hardware 08h Initialize chipset with initial POST values 09h Set IN POST flag 0Ah Initialize 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 8254 timer initialization 1Ah 8237 DMA controller initialization 1Ch Reset Programmable Interrupt Controller 20h 1-3-1-1 Test DRAM refresh 22h 1-3-1-3 Test 8742 Keyboard Controller 24h Set ES segment register to 4 GB 26h Enable A20 line 28h Autosize DRAM 29h Initialize POST Memory Manager 2Ah Clear 215 KB base RAM 2Ch 1-3-4-1 RAM failure on address line xxxx* 2Eh 1-3-4-3 RAM failure on data bits xxxx* of low byte of memory bus 2Fh Enable cache before system BIOS shadow 30h 1-4-1-1 RAM failure on data bits xxxx* of high byte of memory bus 32h Test CPU bus-clock frequency 33h Initialize Phoenix Dispatch Manager 36h Warm start shut down 38h Shadow system BIOS ROM 3Ah Autosize cache 3Ch Advanced configuration of chipset registers 3Dh Load alternate registers with CMOS values 42h Initialize interrupt vectors 45h POST device initialization
Chapter 499 46h 2-1-2-3 Check ROM copyright notice 48h Check video configuration against CMOS 49h Initialize PCI bus and devices 4Ah Initialize all video adapters in system 4Bh QuietBoot start (optional) 4Ch Shadow video BIOS ROM 4Eh Display BIOS copyright notice 50h Display CPU type and speed 51h Initialize 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 User Patch1 66h Configure advanced cache registers 67h Initialize Multi Processor APIC 68h Enable external and CPU caches 69h Setup System Management Mode (SMM) area 6Ah Display external L2 cache size 6Bh Load custom defaults (optional) 6Ch Display shadow-area message 6Eh Display possible high address for UMB recovery 70h Display error messages 72h Check for configuration errors 76h Check for keyboard errors 7Ch Set up hardware interrupt vectors 7Eh Initialize coprocessor if present 80h Disable onboard Super I/O ports and IRQs 81h Late POST device initialization 82h Detect and install external RS232 ports 83h Configure non-MCD IDE controllers 84h Detect and install external parallel ports 85h Initialize PC-compatible PnP ISA devices 86h Re-initialize onboard I/O ports 87h Configure Motherboard Configurable Devices (optional) 88h Initialize BIOS Data Area 89h Enable Non-Maskable Interrupts (NMIs) CodeBeepsPOST Routine Description
100Chapter 4 8Ah Initialize Extended BIOS Data Area 8Bh Test and initialize PS/2 mouse 8Ch Initialize floppy controller 8Fh Determine number of ATA drives (optional) 90h Initialize hard-disk controllers 91h Initialize local-bus hard-disk controllers 92h Jump to UserPatch2 93h Build MPTABLE for multi-processor boards 95h Install CD-ROM for boot 96h Clear huge ES segment register 97h Fixup Multiprocessor table 98h 1-2 Search 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 flag B0h Check for errors B2h POST done- prepare to boot operating system B4h 1 One short beep before boot B5h Terminate QuietBoot (optional) B6h Check password (optional) B9h Prepare Boot BAh Initialize DMI parameters BBh Initialize PnP Option ROMs BCh Clear parity checkers BDh Display MultiBoot menu BEh Clear screen (optional) BFh Check virus and backup reminders C0h Try to boot with INT 19 C1h Initialize POST Error Manager (PEM) C2h Initialize error logging C3h Initialize error display function CodeBeepsPOST Routine Description