Dell Latitude LS- Manuals

Page 3 - DellTM LatitudeTM LS Portable Computers; SERVICE MANUAL

www.dell.com ™ Dell™ Latitude™ LS Portable Computers SERVICE MANUAL

Page 5 - Contents; Index

v Contents Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Preparing to Work Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Screw Identification and Tightening . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 6 - Screw Placement Mat with Component Screw Counts and

vi Figures Figure 1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Main Battery Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 3. Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figur...

Page 8 - Read This First; User’s Guide; NOTICE: A NOTICE indicates either potential damage to hardware or

viii Read This First A prerequisite for using this manual to ser vice Dell computer systems is a basic knowledge of PCs and prior training in PC troubleshooting techniques. In addition to information provided in this manual, Dell provides the User’s Guide for troubleshooting procedures and instructi...

Page 9 - Figure 1. Computer Orientation

support.dell.com Dell Latitude LS Portable Computers Ser vice Manual 1 Dell™ Latitude™ LS Portable Computers Service Manual This manual provides instructions for removing and replacing field-replaceable components, assemblies, and subassemblies in your Dell Latitude portable computer. Unless other w...

Page 10 - Recommended Tools; NOTICE: Make sure that the work surface is clean to prevent scratch-

2 Dell Latitude LS Portable Computers Service Manual Recommended Tools Most of the procedures in this manual require the use of one or more of the following tools: • #0 and #1 magnetized Phillips-head screwdrivers • Small flat-blade screwdriver • 5-mm socket wrench • Small plastic scribe • Needle-no...

Page 11 - Figure 2. Main Battery Assembly Removal; NOTICE: While you work, periodically touch the I/O panel to; Screw Identification and Tightening; Figure 3. Screw Identification; NOTICE: When reinstalling a screw, you must use a screw of the

support.dell.com Dell Latitude LS Portable Computers Service Manual 3 Figure 2. Main Battery Assembly Removal 9. Ground yourself by touching the unpainted metal surface of an I/O connector on the back of the computer. NOTICE: While you work, periodically touch the I/O panel to dissipate any static e...

Page 12 - Table 1. Screw Placement Mat with Component Screw Counts

4 Dell Latitude LS Portable Computers Service Manual When you are removing and replacing components, photocopy the Table 1 placement mat as a tool to lay out and keep track of the component screws. Table 1. Screw Placement Mat with Component Screw Counts and Sizes Hard-Disk Drive Assembly: M2 x 4 mm...

Page 13 - ZIF Connectors; Figure 4. Disconnecting an Interface Cable; NOTICE: The ZIF connectors are fragile. To avoid damage, do not; Grasp the interface cable and pull it out of the connector.

support.dell.com Dell Latitude LS Portable Computers Service Manual 5 ZIF Connectors Some of the computer’s interface connectors are zero insertion force (ZIF) connectors. These connectors are not removable, but they must be released to disconnect a cable from them (see Figure 4). Figure 4. Disconne...

Page 14 - Figure 5. Exploded View—Computer

6 Dell Latitude LS Portable Computers Service Manual Removing Field-Replaceable Parts and Assemblies Figure 5. Exploded View—Computer The following subsections provide instructions for removing and replacing field-replaceable parts and assemblies. display assembly keyboard palmrest assembly system b...

Page 15 - Hard-Disk Drive Assembly; Figure 6. Hard-Disk Drive Assembly Removal

support.dell.com Dell Latitude LS Portable Computers Service Manual 7 Hard-Disk Drive Assembly Figure 6. Hard-Disk Drive Assembly Removal NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. NOTICE: The hard-disk drive is very sensitive to sho...

Page 16 - Keyboard Bezel; Figure 7. Keyboard Bezel Removal; NOTICE: To avoid damaging the system board, you must remove the

8 Dell Latitude LS Portable Computers Service Manual Keyboard Bezel Figure 7. Keyboard Bezel Removal NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. NOTICE: To avoid damaging the microphone, do not put any objects into the microphone hole...

Page 17 - Display Assembly; Figure 8. Display Assembly Removal; Remove the keyboard bezel.

support.dell.com Dell Latitude LS Portable Computers Service Manual 9 Display Assembly Figure 8. Display Assembly Removal NOTICE: To avoid damaging the system board, you must remove the battery before you service the computer. 1. Remove the keyboard bezel. 2. Close the display. 3. Remove the two M2 ...

Page 18 - An L is stamped on the bottom of the left

10 Dell Latitude LS Portable Computers Service Manual 5. Remove the two M2 x 4-mm screws at the bottom of the computer that secure the display assembly to the bottom case (see Figure 8). 6. Turn the computer right-side up. 7. Open the display. 8. Remove the left and right hinge covers. NOTE: When re...

Page 20 - Display Assembly Bezel; Figure 9. Display Assembly Bezel Removal; Remove the six M2 x 3.5-mm screws located at the top and bottom of the

12 Dell Latitude LS Portable Computers Service Manual Display Assembly Bezel l Figure 9. Display Assembly Bezel Removal NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. 1. Use a scribe to carefully pr y the six rubber screw covers out of t...

Page 21 - Display Assembly Latch; Figure 10. Display Assembly Latch Removal; Remove the display assembly bezel.

support.dell.com Dell Latitude LS Portable Computers Service Manual 13 3. Separate the bezel from the display-assembly top cover. The bezel is secured by slot openings that snap into the display-assembly top cover. Carefully lift the inside edge of the bezel, working your way around the inside perim...

Page 22 - LCD Panel; Figure 11. LCD Panel Removal; Remove the four M2 x 3.5-mm screws on the left and right sides of

14 Dell Latitude LS Portable Computers Service Manual LCD Panel Figure 11. LCD Panel Removal NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. 1. Ground yourself by touching the unpainted metal surface of the I/O panel on the back of the co...

Page 23 - NOTE: Keep the tape for when you replace the LCD panel.

support.dell.com Dell Latitude LS Portable Computers Service Manual 15 8. Disconnect the narrow flex cable from the ZIF connector on the left side of the inverter. 9. Disconnect the two-wire back-light plug from the connector on the right side of the inverter (see Figure 11). 10. Remove the inverter...

Page 24 - not; Display Assembly Hinges

16 Dell Latitude LS Portable Computers Service Manual 6. With bezel side of the inverter facing down, connect the two-wire back-light plug to the connector on the right side of the inverter. When the plug is all the way in the connector, the key slot in the center of the plug should not be visible. ...

Page 25 - Keyboard Assembly; Figure 12. Keyboard Assembly Removal; NOTICE: To avoid damaging the system board, you must remove

support.dell.com Dell Latitude LS Portable Computers Service Manual 17 Keyboard Assembly Figure 12. Keyboard Assembly Removal To remove the keyboard assembly, perform the following steps. NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. NO...

Page 26 - NOTICE: The keycaps on the keyboard are fragile, easily dislodged,; To replace the keyboard assembly, perform the following steps.; NOTICE: Position the keyboard cable so it is not twisted when it is; Connect the keyboard cable to the connector on the system board.

18 Dell Latitude LS Portable Computers Service Manual NOTICE: The keycaps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the keyboard. 6. Remove the keyboard assembly. To replace the keyboard assembly, perform the following steps. ...

Page 27 - Memory Module; Figure 13. Memory Module Removal

support.dell.com Dell Latitude LS Portable Computers Service Manual 19 Memory Module Figure 13. Memory Module Removal NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. 1. Remove the keyboard bezel. 2. Remove the keyboard assembly. 3. Ground...

Page 28 - Palmrest Assembly; Figure 14. Removing the Palmrest Assembly Bottom Screws; NOTICE: Make sure that the work surface is clean to prevent

20 Dell Latitude LS Portable Computers Service Manual If you do not hear a click as each end of the memor y module snaps into the tabs, remove the memor y module and reinstall it. Palmrest Assembly Figure 14. Removing the Palmrest Assembly Bottom Screws The palmrest assembly consists of the palmrest...

Page 29 - Figure 15. Removing the Palmrest Assembly Top Screws

support.dell.com Dell Latitude LS Portable Computers Service Manual 21 Figure 15. Removing the Palmrest Assembly Top Screws 8. Remove the three silver M2 x 6-mm screws in the keyboard-assembly area that secure the middle of the palmrest assembly to the bottom case (see Figure 15). 9. Disconnect the ...

Page 30 - Reinstall the four black M2 x 4-mm screws that secure the top of the; Touch Pad Assembly; Figure 16. Touch Pad Removal

22 Dell Latitude LS Portable Computers Service Manual 3. Reinstall the four black M2 x 4-mm screws that secure the top of the palmrest assembly to the bottom-case assembly (see Figure 15). 4. Connect the touch pad flex cable to the ZIF connector on the system board. 5. Connect the status lights flex...

Page 31 - Bottom Assembly; Figure 17. Bottom Assembly

support.dell.com Dell Latitude LS Portable Computers Service Manual 23 8. Disconnect the flex cable from the ZIF connector on the back of the touch pad (see Figure 16). The flex cable remains attached to the touch pad holder assembly. Bottom Assembly Figure 17. Bottom Assembly The bottom assembly co...

Page 32 - Reserve Battery; Figure 18. Reserve Battery Removal; RTC Battery

24 Dell Latitude LS Portable Computers Service Manual Reserve Battery Figure 18. Reserve Battery Removal NOTICE: The reserve battery provides power to the computer’s nonvolatile random-access memory (NVRAM) when the computer is turned off. Removing the battery causes the computer to lose the user-se...

Page 33 - Grasp the RTC batter y and pull it out of the holder.; Main Battery; Figure 19. Modem Removal

support.dell.com Dell Latitude LS Portable Computers Service Manual 25 3. Grasp the RTC batter y and pull it out of the holder. You may need to used a small flat-blade screwdriver to carefully pr y the batter y out of the holder. Main Battery See the “Preparing to Work Inside Your Computer” section ...

Page 35 - Fan; Figure 20. Fan Removal

support.dell.com Dell Latitude LS Portable Computers Service Manual 27 Fan Figure 20. Fan Removal 1. Remove the keyboard bezel. 2. Remove the display assembly. 3. Remove the keyboard assembly. 4. Remove the palmrest assembly. 5. Carefully disconnect the fan wire connector from the system board (see ...

Page 36 - Replace the keyboard bezel.; Speaker; Figure 21. Speaker Removal; NOTICE: To ensure maximum cooling for the microprocessor, do not

28 Dell Latitude LS Portable Computers Service Manual 4. Replace the palmrest assembly. 5. Replace the keyboard assembly. 6. Replace the display assembly. 7. Replace the keyboard bezel. Speaker Figure 21. Speaker Removal 1. Remove the keyboard bezel. 2. Remove the display assembly. 3. Remove the key...

Page 37 - NOTICE: The audio EMI shield is attached to the USB connector

support.dell.com Dell Latitude LS Portable Computers Service Manual 29 NOTICE: The audio EMI shield is attached to the USB connector housing with two-sided tape. To avoid bending the audio EMI shield, care must be taken when separating the audio EMI shield from the USB connector housing. 6. Using a ...

Page 38 - Reinstall the palmrest assembly.; System Board Assembly; Figure 22. System Board Assembly Removal

30 Dell Latitude LS Portable Computers Service Manual 7. Reinstall the palmrest assembly. 8. Reinstall the keyboard assembly. 9. Reinstall the display assembly. 10. Reinstall the keyboard bezel. System Board Assembly 6 Figure 22. System Board Assembly Removal To remove the system board assembly, per...

Page 41 - Main Battery Release Latch; Figure 24. Main Battery Release Latch Removal

support.dell.com Dell Latitude LS Portable Computers Service Manual 33 9. Reinstall the audio EMI shield. a. Carefully position the audio EMI shield so the section with the two-sided tape is over the USB connector housing. b. Press the audio EMI shield down so it attaches to the USB connector housin...

Page 42 - NOTICE: The tabs on the release button are plastic. Care should be; APR Docking Doors; NOTICE: The doors are attached to each other by a tension spring at

34 Dell Latitude LS Portable Computers Service Manual 1. Remove the keyboard bezel. 2. Remove the display assembly. 3. Remove the keyboard. 4. Remove the palmrest assembly. 5. Remove the system board. NOTICE: The tabs on the release button are plastic. Care should be taken when squeezing the tabs to...

Page 43 - NOTE: On the under side of the doors, a small

support.dell.com Dell Latitude LS Portable Computers Service Manual 35 NOTE: On the under side of the doors, a small F is printed on the front door and a small B is printed on the back door. As you hold the doors for installation, the front door is near you, the back door is away from you, and the t...

Page 46 - reserve battery removal,

2 Dell Latitude LS Portable Computers Service Manual R reserve battery removal, 24 RTC battery removal, 24 S screw identification and tightening, 3 speaker removal, 28 system board assembly illustration, 30 removal, 30 T tools, 2 touch pad removal, 22 Z ZIF connectors, 5