Dell LM P-133ST manual Remove the keyboard from the computer

Page 67

4.Remove heat sink screws S3 and S4. Lift off the heat sink.

CAUTION: Lift away the heat sink gently. Rough handling could damage the thermal pad on the bottom of the heat sink.

5.Disconnect the keyboard cable from the main board.

Use a small flat-blade screwdriver to release the ZIF connector securing the keyboard cable.

CAUTION: Lift away the cable only after the ZIF connector is opened (see “ZIF Connectors” found earlier in this chapter). Pulling the cable from the connector damages the conductive coating on the end of the cable.

6. Remove the keyboard from the computer.

Removing and Replacing Parts 4-31

Image 67

Contents 659,&0$18$ Page Contents Chapter Removing and Replacing Parts Chapter Beep Codes and Error MessagesFigures IndexTables Page Read This First Page Xii System Overview System FeaturesFront View of the Portable Computer Physical DescriptionStatus Display Keyboard IndicatorsDiskette-Drive Access Indicator Battery Charge Gauge PasswordPower Conservation System PowerInterrupt Assignments Interrupt AssignmentsTechnical Specifications Technical SpecificationsConnectors Video Keyboard Main Battery AC Adapter Environmental Computer Visual Inspection Initial User ContactPage If an external monitor is connected, verify the following Observing the Boot RoutineIf an external mouse is connected, verify the following Page Getting Help Eliminating Resource ConflictsPage Post Beep Codes Beep Codes and Error MessagesPost Beep Codes System Error Messages System Error MessagesParity error in system Faulty main board Timer circuit on main Faulty main board Running the Dell Diagnostics Recommended Tools Removing and Replacing PartsScrew Identification Screw Identification and TighteningMain Battery Removal Precautionary MeasuresHard-Disk Drive Removal Remove the hard-disk drive assemblyRemove any PC Cards Diskette Drive, Secondary Battery, or CD-ROM RemovalReleasing a ZIF Connector ZIF ConnectorsExploded View-Computer Exploded Views of Components and Assemblies10. Exploded View-LCD Assembly 11. Exploded View-Top Assembly 12. Exploded View-Bottom Assembly Factory Repair Parts and Assemblies Factory Repair Parts and AssembliesSVC,SYS,PLN,LMP133ST BRKT,HD,12.5MM,LMP LCD,TFT,SVGA,12.1,LMP,IBM CVR,HNG,CTR,LMP TSH,WUE,SVC,LMP Naming Conventions 13. Capacitor C146 Location Deleting the PasswordHard-Disk Drive Remove the hard-disk drive assembly from the computerLift the hard-disk drive out of the bottom case Diskette Drive 15. Diskette Drive AssemblyCD-ROM 17. Memory Module Removal Memory Module18. LCD Assembly Removal LCD AssemblyFront Bezel Remove the LCD assemblyRemove the front bezel LCD PanelMicrophone Inverter Board22. LCD Assembly Latches Removal LCD Assembly LatchesRemove the power/suspend indicator Power/Suspend IndicatorRemove the inverter board Back BezelRemove the latches 25. Keyboard Removal KeyboardRemove the keyboard from the computer Production Note Top AssemblyRemove the keyboard Separate the top assembly from the bottom assemblyDisconnect the status-display board connector Remove the top assembly from the computerSpeakers Remove the top assemblyStatus Display Board Remove the status display board from the top assemblyDevice Remove the I/R device from the top assemblyRemove the status display board Power ButtonRemove power button Remove the power button and spring from the top assemblyRemove the touch pad buttons Touch Pad32. Bottom Assembly Bottom AssemblyOpen the cover Remove the keyboard Processor BoardRemove the processor board from the main board Open the cover Remove the top assembly Power Supply BoardRemove the power supply board from the main board 35. Audio Board Removal Audio BoardRemove the black mylar cover on the PC Card cage Remove the power supply boardMain Board Remove the audio cardRemove the main board Bend the options bay wall see FigureOpen the cover Remove the main board Cache BoardPage Index Eliminating resource conflicts Error messages, 3-3,3-6 Speaker removal Specifications technical Standby mode Status display board removal