Troubleshooting and Repair
Contents
1. Check Audio board CN7 PINS9 OHGLED 5V LED Indicator check Y NO Check Caps Lock LED J YES lg Y NO Check Num Lock LED YES a Y NO Check Scroll Lock LED gt YES lq Y NO Check IDE Access LED YES a Y NO Check FDD LED blinking 9 YES lq Y NO Check Battery Low LED YES lq Check e end LED Ne ZSP gt blinking YES g M NO Check Charge LED gt YES END Figure 6 20 Suspend Function Check FIC A440 Series Service Manual 6 25 Troubleshooting and Repair 6 4 22 Cover Switch Function Check Setup Cover Switch Press Cover Switch Check U26 Pin12 L1D OV NO Check BIOS Setup YES NO Check Switch L YES END Figure 6 21 Cover Switch Function Check 6 4 23 Internal Modem or LAN Port Check 6 26 ii Check CN24 Pin19 31 89 1 40 88 28 24 3V Pin 97 123 18 5V Pin 112 12V NO Check Fax Modem or ie LAN Module Board Replace Module Board YES Check 5V Power s NON s YES NO Check ADO AD31 Check U25 Signal signal YES END Figure 6 22 Internal Fax Modem Port Check FIC A440 Series Service Manual Troubleshooting and Repair 6 4 24 DC DC Power Check2. y Press Power NO Check main board F1 F3 i Switch Check I O board F601 YES 1 v NO Q54 PIN 5 6 7 8 Check U4 r 10V 20V PIN 27 28 3V YES v NO Check Q51 Q52 L18 LN A U7 PIN12 5V D41 D42 U7 YES J4 v NO L89 PIN1 2 Check Q53 Q54 D36 r 3V D34 L11 U7 YES NO D3 PIN1 12V E o Check U4 YES END Figure 6 23 DC DC Power Check 6 4 25 TV Out Check NO Check U40 Pin 5 16 25 Check TV chip power 31 35 3V U40 Pin 38 5V YES 5 NO Check TV chip Check U40 Pin 1 4 6 m Data Bus 42 44 TVD 0 7 YES la Check TV chip NO gt SM Bus Check U40 Pin 26 27 YES D NO Check TV chip clock Check U40 Pin 39 YES 4 i NO Check TV chip jy Check CN19 Pin 3 4 output YES END Figure 6 24 TV Out Check FIC A440 Series Service Manual 6 27
3. All interrupts expect the timer tick interrupt are masked off at the interrupt controllers If a timer tick interrupt does not occur during a specific time period an error message is displayed on the screen The system does not halt A return address is stored in 40 67h and the processor is reset via the keyboard controller If a timer tick occurs during this time period an error message is displayed on the screen Other failures are hard to detect If possible the BIOS will continue with POST skipping the memory tests To test extended memory the processor must be placed in protected mode and the A20 line must be enabled For the memory tests the BIOS generally uses the keyboard controller to enable A20 If the A20 line is not properly set during the memory test an error message is displayed on the screen and the memory test are suspended The system does not halt During the memory tests the processor is placed in protected mode All interrupts in the interrupt descriptor table are initialized to point to special handler that displays a message on the screen All hardware interrupt are disabled The system does not halt when an unexpected interrupt occurs The memory above the first 64K is tested with a rolling ones test and a pattern test All success and failure messages are displayed on the screen and POST will continue Over a period of time the current count values in timer 2 are read and accumulated by
4. 2 1 10h 1Fh First 64K RAM chip or data The first 64K of RAM is tested with a line failure on bit x rolling ones test and a pattern test If any of the rolling ones tests fail then the BIOS reports the specific bit that failed To determine the bit number from the diagnostic code subtract 10h For example if 12h is displayed at the diagnostic port bit 2 failed Failure results in a system halt Slave DMA register test in Pattern test of channels 1 through 3 of progress or failure the slave controller starting port address 02h Failure results in a system halt Master DMA register test in Pattern test of channels 1 through 3 of progress or failure the master DMA controller starting port address C4h Failure results in a system halt Master interrupt mask register Rolling ones and zeros tests of the mask test in progress or failure register of the master programmable interrupt controller port 21h Failure results in a system halt Slave interrupt mask register Rolling ones and zeros tests of the mask test in progress or failure register of the master programmable interrupt controller port A1h Failure results in a system halt Interrupt vector loading in No specific test is performed just progress indicates that the Interrupt Vector table is being initialized Keyboard controller test in The self test command AAh is issued to progress or failure the 8042 keyboard controller and the results are mon
5. Press the F1 key to continue F2 This message indicates that an error was found during to run the Setup utility POST Pressing the F1 key allows the system to attempt to boot Press F2 allows users to run the ROM based SETUP utility to correct configuration information 6 2 3 Beep Codes Beep codes are used to identify a POST error that occurs when the screen is not available Once the screen is operating diagnostic messages are reported to the screen There are beep codes for both fatal and non fatal system board errors No beep code is generated if a test is aborted while in progress However diagnostic cards can be installed in order to display the contents of the diagnostic port 80h and identify the area of failure Explanation of test terms for beep code table The following terms are used in the Test Performed column of the beep code table 1 Pattern test One or more particular patterns are written to a location then read back from the same location Examples of patterns used are 55h and AAh If the value read does not match the value written the test is considered a failure 2 Rolling ones test Several patterns are constructed These patterns represent a one rolling through the given location For example to roll a one through three bits the following patterns would be constructed 001 010 011 100 101 110 and 111 The patterns are written to the location and then read back one by one If the value read does no
6. Advanced menu Check if serial device is connected properly If using serial mouse check if Internal Touchpad is disabled under BIOS Setup On Windows 95 or 98 check if it detects the serial mouse in System Device Manager under the Control Panel Check if mouse driver is installed properly Replace serial device Check the South Bridge chip on the motherboard for any cold or loosed soldering Replace the motherboard Parallel device does not work Checkif Printer is set to ENABLED under BIOS Setup program Advanced menu Check if all connections are properly set Check if external device is turned on Check if Printer Mode is set properly Check the South Bridge chip on the motherboard for any cold or loosed soldering Replace the motherboard IR Port does not work Check if IR port COM2 is enabled under BIOS Setup Advanced Menu Check if IR driver is properly installed under Win95 Refer to Chapter 2 Check if File Sharing and Computer name is set properly on both sides Check if Infrared Monitor is activated Check if IR ports on both ends are not blocked or obstructed Check the IR module Check the I O controller chip on the motherboard for any cold or loosed soldering Replace the motherboard 6 12 FIC A440 Series Service Manual Troubleshooting and Repair Table 6 5 d Quick Troubleshooting Problem or Symptoms Corrective Actions USB Port does not work Check if USB port op
7. Signal 53 SFLM 57 SLP 59 SDE YES h NO Check LCD Data Check CN17 LCDO 23 Signal Signal Yes f NO Check Different Check U23 LV010 LV011 1 lt p Signal LV012 LVO1 YES END Figure 6 18 LCD Panel Interface Check FIC A440 Series Service Manual 6 23 Troubleshooting and Repair 6 4 20 Suspend Function Check Q0 Check BIOS Power Management if it is set to Save to RAM or DISK YES Execute Suspend routine by pressing lt Fn gt lt F4 gt keys or pressing cover switch v Suspend to RAM v Suspend to DISK v Y za TIGER EG Check U16 Pin 28 Pin 27 STR OV areas Pin 28 STR OV v v Resume operation Resume operation v v Check U16 Pin27 Check U16 Pin28 STR 3 3V STD 3 3V Figure 6 19 Suspend Function Check 6 24 FIC A440 Series Service Manual Troubleshooting and Repair 6 4 21 LED Indicator Function Check D y Check U26 Pin33 CapsLED 0V Check U26 Pin32 NumLED 0V Check U26 Pin31 ScrLed OV Check CN11 Pin4 HddLED OV Check CN11 Pin39 MTRO OV Check Audio board CN7 Pin13 BATL OV Check Audio board CN7 Pin7 SusLED 0V 5V 5V 0V
8. DC DC board of the notebook if it is inserted into the motherboard connector properly Otherwise replace the DC DC board Power LED is on but no display Press power button for 4 seconds to reset hardware and system does not turn on settings Check if Power LED turns off Check memory module if it is inserted properly Try to check also the module on the internal slot Reset CMOS RTC Replace memory module CPU module or DC DC board Display on the LCD is 1 Adjust the brightness display controls unreadable Check if installed VGA driver is correct and resolution is set according to LCD size and type Check if the LCD cables are inserted properly Check also connections inside the LCD panel Check LCD inverter board inside LCD panel if faulty Check the North Bridge chip on the motherboard if there is any cold or loosed soldering Replace the motherboard LCD screen does not show Check the LED Status Bar if Power Saving mode is display activated Press any key or press the power button to resume operation and display Check if the display output is switched to the external monitor Check if there is power Check if LCD cables are disconnected or loosed Replace LCD Inverter board found inside the LCD Panel Battery Power does not last or Make sure that the power management options under does not read properly under BIOS Setup are enabled and set properly Win9S Win98 Recharge the battery pack for at 3 least hours b
9. MCIA driver driver settings if OK YES Check U39 Check PCMCIA NO Pin 7 24 12V Power Pin 15 16 17 3V Pin 1 2 30 5V YES NO Check PCMCIA Check U37 PCI1225 Control Signal Signal YES END Figure 6 15 PCMCIA Interface Check 6 4 17 USB Port Interface Check i Check USB device NO Tm gt H W amp S W P YES NO Check USB Power Check CNG Pin 4 5V YES k NO Check USB Signal Check CN3 Pin 2 3 6 7 YES Figure 6 16 USB Port Interface Check 6 22 FIC A440 Series Service Manual Troubleshooting and Repair 6 4 18 IR Interface Check NO Check I O board U604 Check IR Power n Pin 1 5V YES NO Check IR Component J3 Replace IR YES NO Check IR signal Check I O board U604 Pin 8 9 Signal YES Figure 6 17 IR Port Interface Check 6 4 19 LCD Panel Interface Check NO Check U21 Check LCD SS Ror gt Pin 1 3 3V YES 3 NO Check CN17 Pin 56 Enalcp ELI en onie 60 Contrast 63 Invena igna 65 Brightness YES Check LCD clock NO Check CN17 Pin 51 SCLK r
10. O Check HDD Address Check I O Board CN612 m Y Bus Pin10 12 9 PDAO PDA1 PDA2 YES r END Figure 6 5 HDD Interface Check 6 4 7 Internal Keyboard Check Check the keyboard NO Check FPC cable if FPC cable broken or not YES Check Keyboard NO Check U26 Interrupt Pin 23 IRQ1 YES NO Check K B connector Check Keyboard JJ and check AIO to AMB scanning signals GOnnector YES END Figure 6 6 Internal Keyboard Check FIC A440 Series Service Manual Troubleshooting and Repair 6 4 8 Glidepad Interface Check v Check Glidepad Data NO Check Audio Board CN6 Signal Pin2 GLPDATA Signal YES e wv Check Glidepad NO Check Audio board CN6 signal CLK Pin3 GLPCLK signal YES rl v Check Glidepad NO Check CN6 On Audio p Power Board Pin 12 5V YES E NO Check U26 M38867 i gt p Check Glidepad IRQ Pin 22 IRQ 12 Figure 6 7 Glidepad Interface Check 6 4 9 CD ROM interface Check v Check CD ROM NO Check CN12 Pin gt Power 38 39 40 41 42 5V YES lt v Check CD ROM Data NO Check CN12 SDD ee Bus O 15 YES v Check CD ROM NO Check CN12 Pin Address Bus 33 31 34 l SDAO SDA1 SDA2 YES NO Check CN12 P
11. ORing them into the values read so far It is expected that during the time period all bits will be set If an error is detected an error message will be displayed on the screen and POST will continue Over a period of time the Update In Progress bit of Status Register A of the real time clock is read and tested The bit should toggle from 0 to 1 within the time period FIC A440 Series Service Manual Troubleshooting and Repair Table 6 3 e BIOS Beep Codes Beep Diagnostic Description Test Performed Code Code Serial port test in progress or failure Parallel port test in progress or failure Math coprocessor test in progress or failure 6 2 4 Run time Error Messages Table 6 4 Pattern test of one or more of the installed serial ports If a failure is detected an error message will be displayed and POST will continue Rolling ones test is done to one or more of the installed parallel ports If a failure is detected an error message will be displayed and POST will continue An integer load and store is performed with the math coprocessor If the values do not match an error message will be displayed and POST will continue BIOS Run time Error Messages Message Cause Action I O card parity interrupt at address Type S hut off NMI R eboot other keys to continue Memory parity interrupt at address Type S hut off NMI R eboot other keys to continue Unexpected HW interrupt interr
12. Troubleshooting and Repair 6 1 Introduction This chapter provides the most common problem encountered with the A440 notebook computer and some troubleshooting means Some of the common problems are System BIOS Related Problems LCD Display Problems System Power and Boot Up Problems External Interface Problems Serial Printer CRT IR USB PS 2 Audio Problems PCMCIA Problems Power Management Problems Input Device Problems Keyboard and Glidepad 6 1 1 Helpful Starters Here are a few helpful starters to begin with before troubleshooting the notebook e Is there any external power source connected to the computer e Does the battery installed been fully charged e Is the computer turn on and the POWER LED activated e Are all cables connected properly and securely e Are all needed device drivers been installed properly e Have you checked your AUTOEXEC BAT and CONFIG SYS files for errors e Is the Power Management function enabled under BIOS Setup Press any key to wake system up again 6 2 System BIOS Related Problems This section provides you with information on how the BIOS handles errors encountered during POST Power On Self Test and translate them to beep codes and error messages Refer to this whenever you encounter error messages or beep codes generated by the computer during startup 6 2 1 POST Messages The following is a summary of the Phoenix BIOS startup error messages that is displayed on the notebook
13. efore using again Discharge and recharge the battery twice Battery Low Low Suspend Off to allow more accurate reading of battery meter under Windows 95 or Windows 98 Replace the battery pack 6 10 FIC A440 Series Service Manual Troubleshooting and Repair Table 6 5 b Quick Troubleshooting Problem or Symptoms Corrective Actions System halts during boot 1 Check condition of selected bootload device diskette sequence or hard disk for bad boot track or incorrect OS files 2 Try booting from a new bootable diskette and recopy or repartition hard disk 3 Check for any BIOS error messages on the display 4 Replace motherboard 1 2 I O processing malfunctions Check the connections of all internal devices Replace motherboard Diskette drive does not work 1 Check if FDD option is DISABLED under BIOS Setup program Check if floppy drive cable is connected properly Check diskette type if correct and not faulty Replace diskette drive Replace motherboard Hard disk drive malfunction Check if hard disk drive is set properly on BIOS SETUP Check cables and connections Check if disk drive is good Replace the drive Replace the motherboard CD ROM drive malfunction Check if drive is set properly on BIOS Setup Check if device driver is installed properly Do not use other CD ROM driver Check cables and connections Replace drive or motherboard Memory malfunction Check if the memory mod
14. face Check I NO Check U26 Pin 8 E M Check Mouse Data EXT2DATA YES NO Check U26 Pin 5 p Check Mouse Clock EXT2CLK YES NO Check U26 Pin22 Check IRQ signal 3 IRQ12 YES Figure 6 12 Internal Keyboard Check 6 20 FIC A440 Series Service Manual Troubleshooting and Repair 6 4 14 Printer Port Interface Check Enter Correct Printer Mode Check RP14 RP31 v NO Check BIOS Setup J YES v NO Check Data Bus m YES a wv NO Check Busy Signal Check L107 L105 YES i END Figure 6 13 Printer Port Interface Check 6 4 15 Audio Port Interface Check l Check Audio Board Power NO Check Audio Board Q1 Pin2 3 5V YES Check Audio Amp Signal NO Check Audio board U5 Check Audio board Q2 Pin 132 5V YES Check AC97 Signal NO Check Audio board U2 Pin23 24 35 36 Signal YES Check MIC Amp NO Check U1 Pin 6 Signal YES Figure 6 14 FIC A440 Series Service Manual Audio Port Interface Check 6 21 Troubleshooting and Repair 6 4 16 PCMCIA Interface Check 16 NO Sheek software gt Setup PC
15. in29 r Check IRQ Signal IRQ15 END Figure 6 8 CD ROM Interface Check 6 18 FIC A440 Series Service Manual Troubleshooting and Repair 6 4 10 Charger Board Interface Check y Plug in AC adapter v NO DC IN 20V L p Check M B TW1 F1 YES v NO Q6 5V p Check AIO CHG EN YES jt v NO Check U1 Q6 Q7 Charge Battery gt O8 YES j lt NO Check SMBC SMBD Check U602 U401 F601 Y Check Battery Pack END Voltage amp Temp Figure 6 9 Charger Board Interface Check 6 4 11 Serial Port Interface Check B NO Enter correct type for gt Check BIOS Setup COM1 YES 5 Check Transmitting NO Check U3 m Signal MAX3243 SOUT1 YES e Check Receiving NO Check U3 gt Signal MAX3243 SIN1 li YES lt END Figure 6 10 Serial Port Interface Check FIC A440 Series Service Manual 6 19 Troubleshooting and Repair 6 4 12 External Keyboard Check 1 Check Keyboard NO Check U26 Pin 7 Data EXT1DATA YES Check Keyboard NO Check U26 Pin 4 p Clock EXT1CLK YES NO Check IRQ signal Check U26 Pinze IRQ1 YES Figure 6 11 Internal Keyboard Check 6 4 13 PS 2 Mouse Inter
16. itored Failure results in a system halt 6 6 FIC A440 Series Service Manual Troubleshooting and Repair Beep Code None None 3 3 4 3 4 1 sii W hi none none 8h 9h Bh Ch Dh Eh 30h 31h 32h 33h none Z o 2 o Table 6 3 c CMOS RAM power failure and checksum calculation test in progress CMOS RAM configuration validation for video in progress Screen memory test in progress or failure Screen initialization in progress Screen retrace test in progress or failure Search for video ROM in progress Screen running with video ROM Monochrome monitor operable Color monitor 40 column operable Color monitor 80 column operable FIC A440 Series Service Manual BIOS Beep Codes Diagnostic Description Test Performed Code The power fail bit in CMOS RAM is tested and the lower CMOS RAM area is being checksummed A failure does not result in system halt No specific test is performed just indicates that the configuration specified in CMOS for video is being matched against the actual installation A failure does not result in a system halt The video buffers B0000h and B8000h are tested with a pattern test and a rolling ones test Failure will result in a beep code but not a system halt Until the video installation is confirmed any calls to INT 10h Function 0 set mode will be prefaced with the diagnostic code There is no expected failure fr
17. ive Pointer device failure The PS 2 style mouse failed No boot device available press F1 to retry boot F2 for SETUP utility Either diskette drive A the fixed disk or both the diskette and fixed disk are defective No boot sector on fixed disk press F1 to retry boot F2 for SETUP utility Not a boot diskette press F1 to retry boot F2 for SETUP utility No timer tick interrupt The C drive is not formatted or is not bootable The diskette in drive A is not formatted as a bootable diskette The timer chip has failed Shutdown failure Either the keyboard controller is not accepting the reset command or the associated reset logic has failed Time of day not set run SETUP program 6 2 Check the drive type selected in SETUP Try rebooting If that does not work replace the fixed disk Try rebooting If problem persists check the mouse it s cable and connector Try rebooting If problem persists replace the diskette or the fixed disk Format the C drive and make it bootable Replace the diskette with a bootable diskette and try rebooting Check the system board Turn the power off then back on again If the problem persists contact qualified service personnel Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified service personnel Real Time Clock not set Run SETUP utility FIC A440 Se
18. om this Over a period of time the retrace bit bitO in the appropriate CRT controller status register either port 3BAh or 3DAh is read and tested The retrace bit should toggle from 0 to 1 then 1 to 0 within the time period No specific test is performed by the system BIOS just indicates that the BIOS is about to jump to the initialization code in the video option ROM No specific test is performed just indicates that a video option ROM was found and believed to be operating No specific test is performed just indicates that the BIOS believes a monochrome monitor is installed and is operating No specific test is performed just indicates that the BIOS believes a color monitor is installed and is operating The mode has been set to 40 column as selected by the user in CMOS RAM No specific test is performed just indicates that the BIOS believes a color monitor is installed and is operating The mode has been set to 80 column as selected by the user in CMOS RAM Troubleshooting and Repair Table 6 3 d BIOS Beep Codes Beep Diagnostic Description Test Performed Code Code T l Timer tick interrupt test in progress or failure Shutdown test in progress or failure Gate A20 failure Unexpected interrupt in protected mode RAM test of memory above 64K in progress or failure Programmable interval timer channel 2 test in progress or failure Real time clock test in progress or failure
19. pair 6 4 4 CRT Interface Check START Check CN18 and CRT cable YES NO Check L25 L26 L27 L42 L43 Check VGA clock OSC NB 14 318MHz Figure 6 3 NO Check U24 Pin2 6 4 5 FDD Interface Check 6 16 CRT Interface Check Check BIOS Setup NO Enter Correct FDD gt Menu Type YES a Vv Check if FDD is NO Format Diskette or RM properly formatted Change Diskette YES q Vv NO Check I O board Check FDD Power _ CN613 Pin22 24 26 5V YES q Vv NO Check Motor of FDD Check I P board operation CN613 Pin17 Signal C YES 7 NO Check Seek Check CN11 Pin42 a ml operation 45 35 YES NO Check Read or Write Check CN11 PIN43 T p operation 44 47 YES END Figure 6 4 FDD Interface Check FIC A440 Series Service Manual Troubleshooting and Repair 6 4 6 HDD Interface Check Vv Check BIOS Setup NO Enter correct HDD type or set e Menu to AUTO YES a Vv Check if HDD is NO Use DOS FDISK and 9 properly formatted FORMAT YES q wv NO i Check HDD Power Check I O cde CN612 Pin2 YES j Vv NO Gheck HDB Data X Check I P board CN612 Bus YES q y N
20. r It is expected that during the time period all bits will be set Failure will result in a system halt DMA channel 0 address and Rolling ones and rolling zeros test of the count register test in progress address and count registers of DMA or failure channel 0 Failure will result in a system halt 1 2 3 06h DMA page register write read Pattern test of DMA page registers test in progress of failure Failure will result in a system halt 1 3 1 08h RAM refresh verification test Over a period of time the refresh bit bit in progress or failure 4 in port 60h is read and tested The refresh bit should toggle from 0 to 1 then 1 to 0 within the time period Failure will result in system halt none 09h First 64K RAM test in No specific test is performed just progress indicates that the test is beginning 1 3 3 OAh First 64K RAM chip or data The first 64K of RAM is tested with a line failure multi bit rolling ones test and a pattern test If any of the pattern tests fail then the BIOS reports that multiple data bits failure Failure results in a system halt FIC A440 Series Service Manual 6 5 Troubleshooting and Repair Table 6 3 b BIOS Beep Codes Beep Diagnostic Description Test Performed Code Code 1 4 2 ODh Parity failure first G4K RAM At the completion of the rolling ones and pattern tests of the first 64K the BIOS checks the parity error bits bits 7 and 6 of port 60h Failure results in a system halt
21. r Port Interface Check Figure 6 13 Audio Port Interface Check Figure 6 14 PCMCIA Interface Check Figure 6 15 USB Port Interface Check Figure 6 16 IR Port Interface Check Figure 6 17 LCD Panel Interface Check Figure 6 18 Suspend Function Check Figure 6 19 LED Indicator Function Check Figure 6 20 Cover Switch Function Check Figure 6 21 Internal Modem LAN Interface Check Figure 6 22 DC DC Check Figure 6 23 TV Out Check Figure 6 24 6 14 FIC A440 Series Service Manual Troubleshooting and Repair 6 4 2 Starting Check START Check Q61 Pin3 12V Q43 Pin 7 5V Check DC DC Check U34 amp Max1710 Check U24 Pin45 Check U20 PIN 2 NO 5Vs 5V md 3Vs 3 3V YES e Check CPU10 NO m Check Vcore7 YES NO Check AHCLK m YES q NO Check DSC P4 e YES END Figure 6 1 6 4 3 Memory interface Check START Starting Check Check DC DC Board Check SKT1 SKT2 Check RP20 RP21 v Check Memory Vcc NO m 3 3V YES la wv Check RAS NO F 0 3 CAS 0 7 YES NO Check MA 0 13 gt YES 7 NO Check MD 0 63 YES Check SKT1 amp SKT2 0 63 Figure 6 2 FIC A440 Series Service Manual Memory Interface Check Troubleshooting and Re
22. ries Service Manual Troubleshooting and Repair Table 6 1 b POST Error Messages Timer 2 failure F2 to enter ROM based SETUP Invalid configuration information please run SETUP Keyboard clock line failure Keyboard data line failure Keyboard stuck key failure Memory failure at hex value read hex value expecting hex value Unexpected interrupt in protected mode Real time clock failure The timer chip has failed Invalid configuration information must be changed Display adapter is configured incorrectly Memory size is incorrect Wrong number of diskette drives Other configuration errors The keyboard the keyboard cable connection or the keyboard controller is defective The keyboard controller firmware has failed A key is jammed Circuitry associated with the memory chips has failed Hardware interrupt or NMI occurred while in protected mode The RTC or battery failed FIC A440 Series Service Manual Check the system board Turn the power off then back on again If the problem persists contact qualified service personnel You must run SETUP utility and correct configuration information Run the SETUP utility Make sure the keyboard cable and keyboard are connected properly Check the keyboard controller and the system board Turn the power off then back on again If the problem persists contact qualified service personnel Check the keyboard cont
23. roller and system board Turn the power off then back on again If the problem persists contact qualified service personnel Locate the jammed key and fix it Make sure the keyboard cable and keyboard are connected properly Turn the power off then back on again If the problem persists contact qualified service personnel Turn the power off then back on again If the problem persists contact qualified service personnel Check the timer chip or the interrupt controller on the system board Run SETUP and turn the power off and on If the problem persists replace the RTC battery If the problem remains contact qualified service personnel Troubleshooting and Repair 6 2 2 Informational Messages This section lists the messages that provide information to the user but require no action Table 6 2 BIOS Informational Messages Message Meng nnnK Base Memory The amount of base memory that tested successfully nnnK Extended The amount of extended memory that tested successfully Memory tests terminated by The message indicates that a user pressed the spacebar keystroke while memory tests were running and stopped the memory tests Press the F1 key to continue This message indicates that an error was found during POST Pressing the F1 key allows the system to attempt to reboot Beginning memory test Press the A user can stop the memory tests by pressing the SPACEBAR to terminate the spacebar memory test
24. s screen These messages help you in understanding some of the notebook s problems that may be corrected by entering the BIOS SETUP program and checking the original values FIC A440 Series Service Manual 6 1 Troubleshooting and Repair Table 6 1 a POST Error Messages Diskette drive A failure The drive failed or is missing Floppy Disk Controller is disabled The diskette is either not formatted or is defective Diskette read failure press F1 to retry boot F2 for SETUP utility Display adapter failed using alternate Gate A20 failure The primary video adapter failed The keyboard controller is not accepting command specifically the enable and disable A20 command Fixed disk configuration error The specified configuration is not supported or doesn t match the actual hardware installed Check the drive to determine the problem Enabled the FDD Controller Replace the diskette with a bootable diskette and retry Check the primary video adapter Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified service personnel Correct the fixed disk configuration Fixed disk controller failure The fixed disk may be Try rebooting If that doesn t defective work replace the fixed disk Fixed disk read failure press F1 to retry boot F2 for SETUP utility The fixed disk may be configured incorrectly or is defect
25. t match the value written the test is considered a failure 3 Rolling zeros test Several patterns are constructed These patterns represent a zero rolling through the given location For example to roll a zero through three bits the following patterns would be constructed 011 001 and 000 The patterns are written to the location and then read back one by one If the value read does not match the value written the test is considered a failure 4 Checksum test All ofthe values in a given range of locations are added together The 6 4 FIC A440 Series Service Manual Troubleshooting and Repair range includes a location which when added to sum of the ranges will produce a known result such as zero Beep codes for system board errors Table 6 3 a BIOS Beep Codes Beep Diagnostic Description Test Performed Code Code CPU registers test in Pattern test of most of the 16 bit CPU progress or failure registers Failure will result in a system halt CMOS write read test in Rolling ones test in the shutdown byte progress or failure offset OEh of the CMOS RAM Failure will result in a system halt ROM BIOS checksum test in The range of ROM that includes the progress or failure BIOS is checksummed Failure will result in a system halt Programmable interval timer Over a period of time the current count 0 test in progress or failure values in timer 0 are read and accumulated by ORing them into the values read so fa
26. tion under BIOS Setup is ENABLED Check if USB device connection is OK Unplug and re plug the device Check if the USB port driver and the USB device driver are installed Replace USB device or contact USB device manufacturer for support Replace motherboard Audio components does not work Check external connections if OK and volume mixer is set properly Check audio source CD tape etc if faulty Check if audio driver is installed Check internal connections for speaker and microphone if not working Check audio board cables and connections Replace motherboard FIC A440 Series Service Manual 6 13 Troubleshooting and Repair 6 4 Component Level Troubleshooting This section provides an easy to follow flowcharts for performing component level troubleshooting on the A440 notebook 6 4 4 General Overview The component level troubleshooting is broken down as follows Troubleshooting Item Figure Starting Check Figure 6 1 Memory Interface Check Figure 6 2 CRT Interface Check Figure 6 3 FDD Interface Check Figure 6 4 HDD Interface Check Figure 6 5 Internal Keyboard Interface Check Figure 6 6 Glidepad Interface Check Figure 6 7 CD ROM Interface Check Figure 6 8 Charger Board Interface Check Figure 6 9 Serial Port Interface Check Figure 6 10 Ext Keyboard Interface Check Figure 6 11 PS 2 Mouse Interface Check Figure 6 12 Printe
27. ule is inserted properly Try to insert it also to the other slot 2 Replace the memory module 3 Replace the motherboard External keyboard or PS 2 _ Check if keyboard or mouse is connected properly mouse doesn t work Check PS 2 Y cable if it is being used Power off system first before plugging in the device Check PS 2 mouse driver if it is installed properly Replace the motherboard Check if the PCMCIA card is inserted properly and all cables and connections are set 2 Checkthe PCMCIA card driver installation for any IRQ or IO address conflict Try to disable the COM2 port SIR inside the BIOS Setup menu to free up unused IRQ 3 If PC card is not detected insert it to the other PCMCIA slot Otherwise replace PC card 4 Contact the PC card manufacturer for support 2 3 Replace the keyboard or mouse 4 1 PCMCIA card does not work 5 Replace the motherboard FIC A440 Series Service Manual 6 11 Troubleshooting and Repair Table 6 5 c Quick Troubleshooting Problem or Symptoms Corrective Actions Glidepad does not work Check if PS 2 mouse driver is properly installed Remove any external PS 2 mouse Check the glidepad cable inside the system if it is inserted properly Replace the glidepad module Check the keyboard controller chip for any cold or loosed soldering Replace the motherboard Serial device does not work Check if Serial Port is set to ENABLED under BIOS Setup program
28. upt at address Type R eboot other keys to continue Unexpected SW interrupt interrupt at address Type R eboot other keys to continue Unexpected type 02 interrupt at xxxxh Type S hut off NMI R eboot other keys to continue Memory on a peripheral card has failed A memory chip s has failed Hardware problem Not displayed if the expected interrupt handler is not enabled Error s in the software program Not displayed if the extended interrupt handler is not enabled A parity error occurred but the source can not be determined FIC A440 Series Service Manual Check the memory cards installed in the system Check the memory on the system board Check all hardware in the system Turn the machine off and then on again If doesn t work check the program Turn the power off and then on again Troubleshooting and Repair 6 3 Quick Troubleshooting This section summarizes problems that may develop during system operation and lists suggested corrective actions to isolate problem properly Table 6 5 a Quick Troubleshooting Problem or Symptoms Corrective Actions No power Power LED not on Check that the AC adapter is plugged into the DC IN connector of the notebook Also that the AC adapter is plugged into a properly grounded AC power outlet If using the battery as main power source check if the battery pack is of the right type charged and is inserted correctly Check the internal
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