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MiTAC 5021 Troubleshooting Manual

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TROUBLE SHOOTING GUIDE FOR NOTEBOOK
TROUBLE SHOOTING GUIDE FOR NOTEBOOK
MiTAC TECHNICAL SUPPORT & SERVICE CENTER
MiTAC TECHNICAL SUPPORT & SERVICE CENTER
5021
5021
BY:
BY:
GEORGE FENG
GEORGE FENG
JAN.
JAN.
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
MiTAC
1996
1996
1

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  • Page 1 TROUBLE SHOOTING GUIDE FOR NOTEBOOK TROUBLE SHOOTING GUIDE FOR NOTEBOOK 5021 5021 GEORGE FENG GEORGE FENG MiTAC TECHNICAL SUPPORT & SERVICE CENTER MiTAC TECHNICAL SUPPORT & SERVICE CENTER JAN. 1996 JAN. 1996 MiTAC MiTAC MiTAC MiTAC MiTAC MiTAC MiTAC MiTAC...
  • Page 2 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 1. DEFINITION OF CONNECTORS 1. DEFINITION OF CONNECTORS 9. SYSTEM BLOCK DIAGRAM & & SWITCHES & SWITCHES SCHEMATICS 2. LOCATION OF SWITCHES & 2. LOCATION OF SWITCHES & 10. SERVICE PARTS RECOMMEND CONNECTORS CONNECTORS 11.
  • Page 3 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 1. DEFINITION OF CONNECTORS & SWITCHES 1. DEFINITION OF CONNECTORS & SWITCHES 1.1 CONNECTORS & SWITCHES IN SYSTEM BOARD 1.1 CONNECTORS & SWITCHES IN SYSTEM BOARD J501 : PS/2 KEYBOARD & MOUSE CONN_ J501 : PS/2 KEYBOARD & MOUSE CONN_...
  • Page 4 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 1.2 CONNECTORS & SWITCHES IN DC/DC BOARD 1.2 CONNECTORS & SWITCHES IN DC/DC BOARD J1 : POWER JACK J1 : POWER JACK J2 : DC/DC BOARD TO SYSTEM BOARD J2 : DC/DC BOARD TO SYSTEM BOARD...
  • Page 5 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 2 . LOCATION OF CONNECTORS & SWITCHES 2 . LOCATION OF CONNECTORS & SWITCHES...
  • Page 6 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 2 . LOCATION OF CONNECTORS & SWITCHES 2 . LOCATION OF CONNECTORS & SWITCHES J503 J503 J504 J504 J501 J501 J506 J506 J505 J505 J507 J507 J502 J502 J508 J508 DC/DC BOARD J509 J509...

  • Page 7: Major Components

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 3. MAJOR COMPONENTS 3. MAJOR COMPONENTS 1. U15 INTEL PENTIUM CPU 1. U15 INTEL PENTIUM CPU 10. U503 M38802 KEYBOARD CONTROLLER 10. U503 M38802 KEYBOARD CONTROLLER 2. U19 ACC2056 SYSTEM CHIPSET 2. U19 ACC2056 SYSTEM CHIPSET 11.

  • Page 8: Location Of Major Components

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 4. LOCATION OF MAJOR COMPONENTS 4. LOCATION OF MAJOR COMPONENTS SYS- BIOS SYS- BIOS DIMM MODULE DIMM MODULE DIMM MODULE DIMM MODULE ACC205 ACC205 PC87410 PC87410 ACC218 ACC218 DS12285S DS12285S AV9154 AV9154 F65545 F65545...
  • Page 9 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 4. LOCATION OF MAJOR COMPONENTS 4. LOCATION OF MAJOR COMPONENTS U503 U503 M38802 M38802 U508 U508 VG -468 VG -468 VIDEO RAM VIDEO RAM U510 U510 U518 U518 U519 U519 ACC2016 ACC2016...
  • Page 10 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5. SWITCH & JUMPER SETTING 5. SWITCH & JUMPER SETTING CPU TYPE CPU TYPE P54C 3.3V P54C 3.3V 3 - 4 3 - 4 P54LM 2.9V 1 - 2 P54LM 2.9V 1 - 2...

  • Page 11: Assembly And Disassembly

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE . ASSEMBLY & DISASSEMBLY . ASSEMBLY & DISASSEMBLY SYSTEM VIEW SYSTEM VIEW HARD DISK DRIVE HARD DISK DRIVE FLOPPY DISK DRIVE FLOPPY DISK DRIVE BATTERY PACK BATTERY PACK KEYBOARD KEYBOARD SPEAKERS SPEAKERS DC/DC BOARD...

  • Page 12: System View

    5021 N/N MAINTENANCE 5021 N/N MAINTENANCE 6.1 SYSTEM VIEW 6.1 SYSTEM VIEW VOLUME CONTROL VOLUME CONTROL TOP COVER LATCH TOP COVER LATCH LINE IN CONNECTOR LINE IN CONNECTOR MIC IN CONNECTOR MIC IN CONNECTOR SPEAKER CONNECTOR SPEAKER CONNECTOR POWER SWITCH...

  • Page 13: Hard Disk Drive

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.2 HARD DISK DRIVE 6.2 HARD DISK DRIVE 1. SLIDE THE HARD DISK DRIVE COVER OUTWARD(FIGURE 2-1) FIGURE 2-1 2. INSERT YOUR FINGER TO THE GROOVE ALONG THE HARD DISK DRIVE COVER ON THE BOTTOM OF THE NOTEBOOK AND PULL THE...
  • Page 14 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.2 HARD DISK DRIVE 6.2 HARD DISK DRIVE 3. TO REMOVE THE HARD DISK DRIVE FROM ITS HOUSING: SLIDE THE HARD DISK DRIVE COVER UNTIL YOU CANNOT SLIDE IT ANY FURTHER AND PRESS IN THE SAFETY CATCH (FIGURE 2-3 ARROW A) TO DETACH THE COVER FROM HOUSING.

  • Page 15: Floppy Disk Drive

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.3 FLOPPY DISK DRIVE 6.3 FLOPPY DISK DRIVE 1. CAREFULLY PUT THE NOTEBOOK WITH ITS BOTTOM FACING UP. 2. PUSHIN THE SAETY CATCHES FIRST (FIGURE 3-1 A) AND LIFT THE FLAP END (FIGURE 3-1 B) TO PULL THE FLOPPY DISK DRIVE OUT OF THE COMPART (FIGURE 3-1 C).

  • Page 16: Battery Pack

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.4 BATTERY PACK 6.4 BATTERY PACK 1. CAREFULLY PUT THE NOTEBOOK WITH ITS BOTTOM FACING UP. 2. RELEASE THE SAETY CATCHE BY SLIDING IT AWAY FROM THE BATTERY PACK (FIGURE 4-1 A) AND THEN LIFT THE BATTERY PACK (FIGURE 4-1 B).
  • Page 17 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.5 KEYBOARD 6.5 KEYBOARD 1. REMOVE THE KEYBOARD FRAME COVER BY PRYING IT UP FROM NEAR THE HINGES (FIGURE 5-1 A). IT IS EASIER IF YOU WORK FROM ONE SIDE HINGE FIRST AND THEN TO THE NEXT ONES.
  • Page 18 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.5 KEYBOARD 6.5 KEYBOARD 3. REMOVE THE SHIELD PLATE BY PRESSING IN THE TAB (FIGURE 5-3 A).AND PRYING UP THE SHIELD PLATE (FIGURE 5-3 B) FIGURE 5-3 4. UNPIUG THE THREE KEYBOARD CABLES (FIGURE 5-4 A) AND DETACH THE KEYBOARD FORM THE CHASSIS (FIGURE 5-4 B).
  • Page 19 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.6 LCD 6.6 LCD 1. FOLLOW THE STEPS 1 TO 3 IN SECTION 6.5 TO REMOVE THE KEYBOARD FRAME COVER AND SHIELD PLATE. 2. TO SEPARATE THE LCD MODULE FROM THE CHASSIS, REMOVE THE FOUR SCREWS (FIGURE 6-1 A) AND UNPLUG THE TWO LCD CABLES (FIGURE 6-1 B).
  • Page 20 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.6 LCD 6.6 LCD 3. TO SEPARATE THE LCD FROM THE LCD HOUSING, FOLLOW THESE STEPS: (a). REMOVE THE FOUR SCREWS (FIGURE 6-3 A). SECURING THE LCD TO THE LCD HOUSING. (b). UNPLUG TWO CONNECTORS (FIGURE 6-3 B). FROM THE BACKLIGHT (D/A) BOARD.
  • Page 21 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.7 SPEAKERS 6.7 SPEAKERS 1. TO SEPARATE THE LCD COVER FRAME FROM THE LCD HOUSING, (FOLLOWING STEPS 1 TO 3 IN SECTION 6.6) 2. FOR EACH SPEAKER, REMOVE TWO SCREWS (FIGURE 7-1 A) AND LIFT THE SPEAKER FREE.
  • Page 22 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8. REMOVE THE FIVE BOTTOM SCREWS(FIGURE 8-2 A). FIGURE 8-2 9. WITH THE NOTEBOOK BOTTOM FACING UP, DETACH THE NOTEBOOK HOUSING FROM THE KEYBOARD FRAME. 10. TO REMOVE THE DC/DC BOARD, REMOVE TWO SCREWS (FIGURE 8-3 A) AND UNPLUG IT FROM THE SYSTEM BOARD.

  • Page 23: Cd-Rom Drive

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.9 CD-ROM DRIVE 6.9 CD-ROM DRIVE 1. SEPARATE THE NOTEBOOK HOUSING FROM THE KEYBOARD FRAME. (FOLLOW STEPS 1 TO 9 IN SECTION 6.8). 2. PULL THE CLIP OUTWARD (FIGURE 9-1 A) AND LIFT THE CD-ROM DRIVE TO...

  • Page 24: System Board

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.11 SYSTEM BOARD 6.11 SYSTEM BOARD 1. REMOVE THE DC/DC BOARD. (SEE SECTION 6.8). 2. REMOVE THE CD-ROM DRIVE. (SEE STEP 2 IN SECTION 6.9) 3. REMOVE THE SYSTEM BOARD SHIELD PLATE BY REMOVING ONE SCREW (FIGURE 11-1 A).
  • Page 25 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 1. TO INSTALL THE DIMM, ALIGN THE DIMM S NOTCHED END WITH THE SOCKET S CORRESPONDING END AND FIRMLY INSERT THE DIMM INTO THE SOCKET AT AN ANGLE. THEN PUSH DOWN UNTIL THE RETAINING CLIPS LOCK THE DIMM INTO POSITION.
  • Page 26 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 6.14 CPU 6.14 CPU 1. REMOVE THE KEYBOARD FRAME COVER AND SHIELD PLATE. FOLLOW STEP 1 TO 3 IN SECTION 6.5) 2. REMOVE THE CPU BY PULLING IT UP. (FIGURE 13-1) FIGURE 14-1 3. TO INSTALL THE NEW CPU, ALIGN THE BEVELED CORNER OF THE CPU WITH THE BEVELED CORNER IN THE SOCKET AND FIRMLY PRESS THE CPU INTO PLACE.

  • Page 27: Maintenance Diagnostics

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.1 INTRODUCTION 7.1 INTRODUCTION EACH TIME THE COMPUTER IS TURNED ON, THE SYSTEM BIOS RUNS A SERIES OF EACH TIME THE COMPUTER IS TURNED ON, THE SYSTEM BIOS RUNS A SERIES OF INTERNAL CHECKS ON THE HARDWARE.
  • Page 28 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.2 5021 BIOS POST TEST PROCEDURE 7.2 5021 BIOS POST TEST PROCEDURE PROGRAMMABLE DEVICE INITIALIZATION PROGRAMMABLE DEVICE INITIALIZATION VIDEO DISPLAY CONTROLLER INITIALIZATION VIDEO DISPLAY CONTROLLER INITIALIZATION BIOS STACK ESTABLISHMENT...
  • Page 29 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.3 POWER-ON SELF TEST ERROR MESSAGES 7.3 POWER-ON SELF TEST ERROR MESSAGES IF AN ERROR IS DETECTED DURING POST, THE ERROR MESSAGES WILL IF AN ERROR IS DETECTED DURING POST, THE ERROR MESSAGES WILL SHOWN ON SCREEN IF THE SCREEN IS AVAILABLE.
  • Page 30 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.3 POWER-ON SELF TEST ERROR MESSAGES 7.3 POWER-ON SELF TEST ERROR MESSAGES MESSAGE POSSIBLE CAUSE RECOMMENDED ACTION MESSAGE POSSIBLE CAUSE RECOMMENDED ACTION THE KEYBOARD CONTROLLER IS DAMAGED KEYBOARD THE KEYBOARD CONTROLLER IS DAMAGED 1.
  • Page 31 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.4 PIO PORT (378H) DIAGNOSTIC TOOLS 7.4 PIO PORT (378H) DIAGNOSTIC TOOLS A. PARTS USED: A. PARTS USED: RESISTER ARRAY, 10PIN, 150 OHM RESISTER ARRAY, 10PIN, 150 OHM...
  • Page 32 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 7. MAINTENANCE DIAGNOSTICS 7. MAINTENANCE DIAGNOSTICS 7.5 ERROR CODES 7.5 ERROR CODES FOLLOWING IS A LIST OF ERROR CODES IN SEQUENCE DISPLAY ON THE PIO DEBUG FOLLOWING IS A LIST OF ERROR CODES IN SEQUENCE DISPLAY ON THE PIO DEBUG BOARD.

  • Page 33: Troubleshooting

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8. TROUBLE SHOOTING 8. TROUBLE SHOOTING 8.1 NO POWER 8.1 NO POWER 8.10 HARD DRIVE OR CD-ROM TEST 8.10 HARD DRIVE OR CD-ROM TEST ERROR ERROR 8.2 NO DISPLAY 8.2 NO DISPLAY 8.11 CMOS TEST ERROR 8.11 CMOS TEST ERROR...
  • Page 34 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.1 NO POWER 8.1 NO POWER SYMPTOM: SYMPTOM: WHEN THE POWER BUTTON IS PRESSED, NOTHING HAPPENS, POWER INDICATOR IS NOT WHEN THE POWER BUTTON IS PRESSED, NOTHING HAPPENS, POWER INDICATOR IS NOT LIGHT UP.
  • Page 35 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.1 NO POWER 8.1 NO POWER SYMPTOM: SYMPTOM: WHEN THE POWER BUTTON IS PRESSED, NOTHING HAPPENS, POWER INDICATOR IS NOT WHEN THE POWER BUTTON IS PRESSED, NOTHING HAPPENS, POWER INDICATOR IS NOT LIGHT UP.
  • Page 36 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE TROUBLE-SHOOTING EXPERIENCED ABOUT DC/DC B'D: A. NO POWER --------------- 1: THE VREF HIGHER OR LOWER THAN 2.5 ----D502 FAULTY 2: THE VDD VOLTAGE HIGHER THAN 5V----U501 GOT FLUX 3: L3 OR L4 BROKEN 4: J2 GOT FLUX 5: SOMETIMES NO POWER------C17 COLD SOLDER B.
  • Page 37 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.2 NO DISPLAY (SYSTEM FAILURE) 8.2 NO DISPLAY (SYSTEM FAILURE) SYMPTOM: SYMPTOM: TURN ON THE POWER, NO SCREEN DISPLAY, LCD OR MONITOR IS GOOD. TURN ON THE POWER, NO SCREEN DISPLAY, LCD OR MONITOR IS GOOD.
  • Page 38 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.2 NO DISPLAY (SYSTEM FAILURE) 8.2 NO DISPLAY (SYSTEM FAILURE) *******CLOCK AND RESET CIRCUIT CHECKING******* *******CLOCK AND RESET CIRCUIT CHECKING******* DC/DC DC/DC U519 BOARD BOARD U519 65545 65545 ACC2016 ACC2016 PWEGOOD PWEGOOD AK20 AK20...

  • Page 39: Vga Controller Failure

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE 8.3 VGA CONTROLLER FAILURE SYMPTOM: SYMPTOM: THERE IS NO SCREEN DISPLAY ON BOTH LCD AND MONITOR BUT SYSTEM PASSES POST TEST. THERE IS NO SCREEN DISPLAY ON BOTH LCD AND MONITOR BUT SYSTEM PASSES POST TEST.
  • Page 40 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE 8.3 VGA CONTROLLER FAILURE SYMPTOM: SYMPTOM: THERE IS NO SCREEN DISPLAY ON BOTH LCD AND MONITOR, BUT SYSTEM PASSES POST TEST. THERE IS NO SCREEN DISPLAY ON BOTH LCD AND MONITOR, BUT SYSTEM PASSES POST TEST.
  • Page 41 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.4 LCD NO DISPLAY OR PICTURE ABNORMAL 8.4 LCD NO DISPLAY OR PICTURE ABNORMAL SYMPTOM: SYMPTOM: THE LCD SHOWS NOTHING OR ABNORMAL PICTURE, BUT IT IS OK FOR EXTERNAL MONITOR.

  • Page 42: Lcd No Display Or Picture Abnormal

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.4 LCD NO DISPLAY OR PICTURE ABNORMAL 8.4 LCD NO DISPLAY OR PICTURE ABNORMAL SYMPTOM: SYMPTOM: THE LCD SHOWS NOTHING OR ABNORMAL PICTURE, BUT IT IS OK FOR EXTERNAL MONITOR.

  • Page 43: External Monitor No Display Or Color Abnormal

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.5 EXTERNAL MONITOR NO DISPLAY OR COLOR ABNORMAL 8.5 EXTERNAL MONITOR NO DISPLAY OR COLOR ABNORMAL SYMPTOM: SYMPTOM: THE CRT MONITOR SHOWS NOTHING OR ABNORMAL COLOR, BUT IT IS OK FOR LCD.
  • Page 44 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.5 EXTERNAL MONITOR NO DISPLAY OR COLOR ABNORMAL 8.5 EXTERNAL MONITOR NO DISPLAY OR COLOR ABNORMAL SYMPTOM: SYMPTOM: THE CRT MONITOR SHOWS NOTHING OR ABNORMAL COLOR, BUT IT IS OK FOR LCD.

  • Page 45: Memory Test Error

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.6 MEMORY TEST ERROR 8.6 MEMORY TEST ERROR SYMPTOM: SYMPTOM: PIO DEBUG BOARD SHOWS THE PORT 378H ERROR CODE IS STOPPED AT 09H, 0AH OR THE PIO DEBUG BOARD SHOWS THE PORT 378H ERROR CODE IS STOPPED AT 09H, 0AH OR THE SCREEN DISPLAYS MEMORY ERROR.
  • Page 46 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.6 MEMORY TEST ERROR 8.6 MEMORY TEST ERROR SYMPTOM: SYMPTOM: PIO DEBUG BOARD SHOWS THE PORT 378H ERROR CODE IS STOPPED AT 09H, 0AH OR THE PIO DEBUG BOARD SHOWS THE PORT 378H ERROR CODE IS STOPPED AT 09H, 0AH OR THE SCREEN DISPLAYS MEMORY ERROR.
  • Page 47 5021I N/B MAINTENANCE 5021I N/B MAINTENANCE 8.7 KEYBOARD TEST ERROR (INCLUDING EXTERNAL KEYBOARD & PS/2 8.7 KEYBOARD TEST ERROR (INCLUDING EXTERNAL KEYBOARD & PS/2 MOUSE) MOUSE) SYMPTOM: SYMPTOM: SCREEN DISPLAY KEYBOARD ERROR OR WOULD NOT RESPOND AT ALL WHEN A KEY IS SCREEN DISPLAY KEYBOARD ERROR OR WOULD NOT RESPOND AT ALL WHEN A KEY IS PRESSED .
  • Page 48 5021I N/B MAINTENANCE 5021I N/B MAINTENANCE 8.7 KEYBOARD TEST ERROR (INCLUDING EXTERNAL KEYBOARD & PS/2 8.7 KEYBOARD TEST ERROR (INCLUDING EXTERNAL KEYBOARD & PS/2 MOUSE) MOUSE) SYMPTOM: SYMPTOM: SCREEN DISPLAY KEYBOARD ERROR OR WOULD NOT RESPOND AT ALL WHEN A KEY IS SCREEN DISPLAY KEYBOARD ERROR OR WOULD NOT RESPOND AT ALL WHEN A KEY IS PRESSED .
  • Page 49 5021I N/B MAINTENANCE 5021I N/B MAINTENANCE 8.8 TRACK POINTER TEST ERROR 8.8 TRACK POINTER TEST ERROR SYMPTOM: SYMPTOM: AN ERROR DISPLAY OCCURS WHEN THE TRACK POINTER IS ENABLED. AN ERROR DISPLAY OCCURS WHEN THE TRACK POINTER IS ENABLED. ITRACKEN X DIR U521 LM324 U503...
  • Page 50 5021I N/B MAINTENANCE 5021I N/B MAINTENANCE 8.8 TRACK POINTER TEST ERROR 8.8 TRACK POINTER TEST ERROR SYMPTOM: SYMPTOM: AN ERROR DISPLAY OCCURS WHEN THE TRACK POINTER IS ENABLED. AN ERROR DISPLAY OCCURS WHEN THE TRACK POINTER IS ENABLED. TRACK POINTER ERROR TRACK POINTER ERROR CHECK CHECK...

  • Page 51: Diskette Drive Test Error

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.9 DISKETTE DRIVE TEST ERROR 8.9 DISKETTE DRIVE TEST ERROR SYMPTOM: SYMPTOM: ERROR MESSAGE OCCURS WHILE LOADING DATA FROM DISK TO SYSTEM. ERROR MESSAGE OCCURS WHILE LOADING DATA FROM DISK TO SYSTEM. MUXI{0..2} MUXI{0..2}...
  • Page 52 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.9 DISKETTE DRIVE TEST ERROR 8.9 DISKETTE DRIVE TEST ERROR SYMPTOM: SYMPTOM: ERROR MESSAGE OCCURS WHILE LOADING DATA FROM DISK TO SYSTEM. ERROR MESSAGE OCCURS WHILE LOADING DATA FROM DISK TO SYSTEM. DISKETTE DRIVE TEST ERROR...
  • Page 53 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.10 HARD DRIVE OR CD-ROM TEST ERROR 8.10 HARD DRIVE OR CD-ROM TEST ERROR SYMPTOM: SYMPTOM: EITHER AN ERROR DISPLAY OCCURS, OR THE DRIVE SPINS CONTINUOUSLY, WHILE TRYING EITHER AN ERROR DISPLAY OCCURS, OR THE DRIVE SPINS CONTINUOUSLY, WHILE TRYING TO READ DATA FROM OR WRITE DATA TO HARD-DISK.
  • Page 54 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.10 HARD DRIVE OR CD-ROM TEST ERROR 8.10 HARD DRIVE OR CD-ROM TEST ERROR SYMPTOM: SYMPTOM: EITHER AN ERROR DISPLAY OCCURS, OR THE DRIVE SPINS CONTINUOUSLY, WHILE TRYING EITHER AN ERROR DISPLAY OCCURS, OR THE DRIVE SPINS CONTINUOUSLY, WHILE TRYING TO READ DATA FROM OR WRITE DATA TO HARD-DISK.
  • Page 55 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.11 CMOS TEST ERROR 8.11 CMOS TEST ERROR SYMPTOM: SYMPTOM: 1. ERROR CODE IS STOPEED AT 02H. 1. ERROR CODE IS STOPEED AT 02H. 2. CMOS DATA LOST, OR TIME & DATE TOO FAST OR SLOW.

  • Page 56: Troubleshooting

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.8 CMOS TEST ERROR 8.8 CMOS TEST ERROR SYMPTOM: SYMPTOM: 1. ERROR CODE IS STOPEED AT 02H. 1. ERROR CODE IS STOPEED AT 02H. 2. CMOS DATA LOST, OR TIME & DATE TOO FAST OR SLOW.

  • Page 57: Sio Port Test Error

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.12 SIO PORT TEST ERROR 8.12 SIO PORT TEST ERROR SYMPTON: SYMPTON: AN ERROR DISPLAY OCCURS WHEN A MOUSE OR OTHER I/O DEVICE IS INSTALLED. AN ERROR DISPLAY OCCURS WHEN A MOUSE OR OTHER I/O DEVICE IS INSTALLED.
  • Page 58 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.12 SIO PORT TEST ERROR 8.12 SIO PORT TEST ERROR SYMPTON: SYMPTON: AN ERROR DISPLAY OCCURS WHEN A MOUSE OR OTHER I/O DEVICE IS INSTALLED. AN ERROR DISPLAY OCCURS WHEN A MOUSE OR OTHER I/O DEVICE IS INSTALLED.
  • Page 59 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.13 SIR PORT TEST ERROR 8.13 SIR PORT TEST ERROR SYMPTON: SYMPTON: AN ERROR DISPLAY OCCURS WHEN TRANSFERRING DATA WITH SIR PORT. AN ERROR DISPLAY OCCURS WHEN TRANSFERRING DATA WITH SIR PORT. U522 C625...
  • Page 60 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.13 SIR PORT TEST ERROR 8.13 SIR PORT TEST ERROR SYMPTON: SYMPTON: AN ERROR DISPLAY OCCURS WHEN TRANSFERRING DATA FROM A MACHINE TO B MACHINE AN ERROR DISPLAY OCCURS WHEN TRANSFERRING DATA FROM A MACHINE TO B MACHINE WITH SIR PORT.
  • Page 61 0.22U 3.3U 74LS04 74LS04 0.1U 74LS125 LM7805 CONNECT TO AC ADAPTOR OSC1 OSC1 4040 1.8432MHZ 1.8432MHZ 74LS164 74LS30 220U 0.2U 0.1U 0.1U 0.1U TO CHECK SIR PORT WITHOUT ANOTHER MACHINE USE ABOVE TOOLS AND RUN MITAC SIR PORT TEST PROGRAM.

  • Page 62: Pio Port Test Error

    5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.14 PIO PORT TEST ERROR 8.14 PIO PORT TEST ERROR SYMPTON: SYMPTON: WHEN A PRINT COMMAND IS ISSUED, PRINTER PRINTS NOTHING OR GARBAGE. WHEN A PRINT COMMAND IS ISSUED, PRINTER PRINTS NOTHING OR GARBAGE.
  • Page 63 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.14 PIO PORT TEST ERROR 8.14 PIO PORT TEST ERROR SYMPTON: SYMPTON: WHEN A PRINT COMMAND IS ISSUED, PRINTER PRINTS NOTHING OR GARBAGE. WHEN A PRINT COMMAND IS ISSUED, PRINTER PRINTS NOTHING OR GARBAGE.
  • Page 64 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.15 AUDIO DRIVE FAILURE 8.15 AUDIO DRIVE FAILURE SYMPTON: SYMPTON: NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED. NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED. L514 C635 SD0~SD7 SD0~SD7 BD0~SD7 BD0~SD7...
  • Page 65 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.15 AUDIO DRIVE FAILURE 8.15 AUDIO DRIVE FAILURE SYMPTON: SYMPTON: NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED OR NO SOUND FROM NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED OR NO SOUND FROM CD-ROM, MICROPHONE AND LINE IN.
  • Page 66 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.15 AUDIO DRIVE FAILURE 8.15 AUDIO DRIVE FAILURE SYMPTON: SYMPTON: NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED OR NO SOUND FROM NO SOUND FROM SPEAKER AFTER AUDIO DRIVE IS INSTALLED OR NO SOUND FROM CD-ROM, MICROPHONE AND LINE IN.
  • Page 67 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.16 SUSPEND RESUME ERROR 8.16 SUSPEND RESUME ERROR SYMPTON: SYMPTON: CANNOT EXECUTE SUSPEND FUNCTION OR CAN T WAKE UP THE SYSTEM AFTER SUSPEND CANNOT EXECUTE SUSPEND FUNCTION OR CAN T WAKE UP THE SYSTEM AFTER SUSPEND RESUMED.
  • Page 68 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.16 SUSPEND RESUME ERROR 8.16 SUSPEND RESUME ERROR SYMPTON: SYMPTON: CANNOT EXECUTE SUSPEND FUNCTION OR CAN T WAKE UP THE SYSTEM AFTER SUSPEND CANNOT EXECUTE SUSPEND FUNCTION OR CAN T WAKE UP THE SYSTEM AFTER SUSPEND RESUMED.
  • Page 69 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.17 ICON LCD INDICATOR ERROR 8.17 ICON LCD INDICATOR ERROR BATTERY INDICATOR ERROR BATTERY A BATTERY B SCROLL NUMBER FDD ON KEY LOCK PCMCIA ON POWER ON HDD ON CAPS LOCK LOCK DC/DC BOARD...
  • Page 70 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.17 ICON LCD INDICATOR ERROR 8.17 ICON LCD INDICATOR ERROR LCD INDICATOR ERROR LCD INDICATOR ERROR IF HDD IF KEY LOCK INDICATOR INDICATOR ERROR THEN ERROR THEN 1. CHECK J2 CONNECTOR FOR ANY COLD 1.
  • Page 71 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.17 ICON LCD INDICATOR ERROR 8.17 ICON LCD INDICATOR ERROR CHECK CHECK CHECK CHECK CHECK CHECK J512, U4, U1 J512, U4, U1 U503, U4, U5 U503, U4, U5 J11, U1, FOR J11, U1, FOR...
  • Page 72 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.17 ICON LCD INDICATOR ERROR 8.17 ICON LCD INDICATOR ERROR TRY ANOTHER KNOW TRY ANOTHER KNOW CHECK CHECK GOOD BATTERY PACK GOOD BATTERY PACK U503, U4, U5 AND DC/DC BOARD U503, U4, U5 AND DC/DC BOARD...
  • Page 73 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.18 BATTERY RE-CHARGE FAILURE 8.18 BATTERY RE-CHARGE FAILURE AC/SOURCE AC/SOURCE ADAPTOR ADAPTOR BATTERY BATTERY PACK A PACK A DC / DC DC / DC BOARD BOARD BATTERY BATTERY PACKB PACKB...
  • Page 74 5021 N/B MAINTENANCE 5021 N/B MAINTENANCE 8.18 BATTERY RE-CHARGE FAILURE 8.18 BATTERY RE-CHARGE FAILURE BATTERY RE-CHARGE FAIL BATTERY RE-CHARGE FAIL IS THE IS THE CHECK CHECK NOTEBOOK NOTEBOOK CONNECT N/B CONNECT N/B U3, U1, Q3, R13 U3, U1, Q3, R13...
  • Page 75 411664100021 5021 D/ A BD, SHARP, TFT D/ A BD 1. 6% 291000627202 DIMM SOCKET,72P 2.1% 411664100041 5021 D/ A BD BI G DSTN D/ A BD 1. 6% 313000020060 CHOCK COIL-200UH 0.7% 411664100039 5021 D/ A BD BI G TFT D/ A BD 1.

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