Dell LM P-133ST manual Precautionary Measures, Main Battery Removal

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Precautionary Measures

Before performing any of the procedures in this chapter, read the following warning.

WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT: Before you start to work on the computer, per- form the following steps in the sequence indicated.

1.Turn off the computer and any attached peripherals.

2.Disconnect the computer and any attached peripherals from AC power sources to reduce the potential for personal injury or shock.

3.Ground yourself by attaching an antistatic grounding strap to your wrist and to an unpainted metal surface on the computer’s I/O panel. If an antistatic grounding strap is not available, periodically dis- charge static electricity from your body by touching one of the connectors on the I/O panel.

1.Determine the power state of the computer. If the display is on, go to step 2.

If the display is off, press any key on the keyboard to verify that the com- puter is not in suspend or standby mode. Then proceed to step 2.

2.Turn off the computer and any attached peripherals.

3.Disconnect the computer and any attached peripherals from AC power sources to reduce the potential for personal injury or shock.

4.Remove the main battery from the battery compartment.

On the right side of the computer, press down on the battery cover until it unlocks and pull the battery straight out.

cover

Figure 4-3. Main Battery Removal

Removing and Replacing Parts

4-3

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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 Observing the Boot Routine If an external monitor is connected, verify the followingIf 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 PasswordRemove the hard-disk drive assembly from the computer Hard-Disk DriveLift 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 IndicatorBack Bezel Remove the inverter boardRemove 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 AssemblyProcessor Board Open the cover Remove the keyboardRemove the processor board from the main board Power Supply Board Open the cover Remove the top assemblyRemove 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