Dell LM P-133ST manual Main Board, Remove the power supply board, Remove the audio card

Page 79

Main Board

 

 

 

I/O panel

 

 

 

cover

 

S17

S8

 

 

 

 

 

ST9

 

ST7 ST6

 

 

ST5

 

 

 

ST4

 

 

 

ST3

 

S18

 

ST2

 

 

ST1

 

S19

 

 

 

 

 

S16

 

S20

 

 

 

 

I/O panel

 

 

 

bracket

 

main board

 

 

(screw S18

(screw ST9

 

(screws ST1–ST6

is 8 mm)

is 4 mm)

 

are 6.5 mm)

6 mm

4 mm

 

6.5 mm

(screws S19–

(screws S16 and

 

(screws ST7 and

S20 are 5 mm)

S17 are 4 mm)

 

ST8 are 4.5 mm)

5 mm

4 mm

 

4.5 mm

Figure 4-36. Main Board Removal

To remove the main board, follow these steps:

1.Open the cover.

2.Remove the top assembly.

See “Top Assembly” found earlier in this chapter.

3.Remove the power supply board.

See “Power Supply Board” found earlier in this section.

4.Remove the audio card.

See the previous subsection, “Audio Board.”

5.Remove the black mylar cover on the PC Card cage.

Removing and Replacing Parts 4-43

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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 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