Dell LM P-133ST - Manuals

R ead This First W arnings, Cautions, and Notes Throughout this manual, there may be blocks of text printed in bold type or in italic type. These blocks are warnings, cautions, and notes, and they are used as follows: NOTE: A NOTE provides helpful information about using the computer system. A prere...

System Overview 1-1 Chapter 1 System Overview T he Dell ® Latitude ® LM P-100SD and LM P-133ST are high-performance multimedia portable computers that use the Intel ® Pentium ® microprocessor. This chapter provides an overview of the components and subsystems of these computers. The individual model...

1-2 Dell Latitude LM Systems Service Manual warm swapping. However, the CD-ROM must be in the computer before or during boot in order for the drivers to load. • Built-in serial infrared transmitter/receiver, effective to 1 m (3.3 ft). • Support for connecting an external diskette drive to the parall...

System Overview 1-3 Status Display . Figure 1-3. Status Display Panel The status display panel is located directly above the keyboard. This panel shows icons that indicate keyboard operation or suspend mode; CD-ROM, hard-disk drive, diskette drive, and PC Card activity; and status of the power sourc...

1-4 Dell Latitude LM Systems Service Manual Diskette-Drive Access Indicator This indicator blinks when data is being transferred to or from the internal diskette drive. PC Card Indicator This indicator blinks when the computer is accessing data from an installed PC Card or Cards. AC Power Indicator ...

System Overview 1-5 Battery Charge Gauge There is a battery charge gauge on the main and second-ary battery. When you press the battery test button (labeled “PUSH”), the appropriate indicator lights up for a few seconds to indicate the amount of charge remaining in the battery. P assword CAUTION: De...

1-6 Dell Latitude LM Systems Service Manual S ystem Power The power button controls power to the system. The computer receives power from either the AC adapter connected to an AC power source or from up to two batteries. If you use the AC adapter, constant power is available to the computer. If you ...

System Overview 1-7 I nterrupt Assignments Table 1-1. Interrupt Assignments IRQ Line Used/Available IRQ0 Generated by the system timer IRQ1 Generated by the keyboard controller to signal that the key-board output buffer is full IRQ2 Cascade to second interrupt controller IRQ3 Used by the infrared po...

1-8 Dell Latitude LM Systems Service Manual T echnical Specifications Table 1-2. Technical Specifications Microprocessor Microprocessor type . . . . . . . . Intel Pentium microprocessor Microprocessor speed . . . . . . . 100 or 133 MHz Internal cache memory . . . . . . 16 KB External cache . . . . ....

System Overview 1-9 Memory (Continued) Memory access time: tRAC . . . . . . . . . . . . . . . . 70 ns tCAC . . . . . . . . . . . . . . . . 20 ns BIOS address . . . . . . . . . . . . . F000:0000 Connectors Serial (DTE) . . . . . . . . . . . . . . one 9-pin connector; 16,550-compatible, 16-byte buffer...

1-10 Dell Latitude LM Systems Service Manual Video Video type. . . . . . . . . . . . . . . . 64-bit (128-bit hardware accelerated) PCI Video controller . . . . . . . . . . . NeoMagic 2070 Video memory . . . . . . . . . . . . 896 KB Active-Matrix Display Type . . . . . . . . . . . . . . . . . . . . a...

System Overview 1-11 Dual-Scan Display (Continued) Dot pitch . . . . . . . . . . . . . . . . . 0.29 mm Power consumption. . . . . . . . . 3.4 W Controls . . . . . . . . . . . . . . . . . . brightness and contrast can be controlled through key combinations Keyboard Number of keys . . . . . . . . . . ...

1-12 Dell Latitude LM Systems Service Manual Main Battery Type . . . . . . . . . . . . . . . . . . . . lithium ion Dimensions: Height . . . . . . . . . . . . . . . . 22.0 mm (0.86 inch) Depth . . . . . . . . . . . . . . . . 219.0 mm (8.62 inches) Width . . . . . . . . . . . . . . . . 57.8 mm (2.27 i...

1-14 Dell Latitude LM Systems Service Manual Environmental (Computer) Temperature: Operating . . . . . . . . . . . . . 5 ° to 35 ° C (41 ° to 95 ° F) Storage . . . . . . . . . . . . . . . -20 ° to 50 ° C (-4 ° to 122 ° F) Relative humidity . . . . . . . . . . 10% to 90% (noncondensing) Maximum vibra...

Initial Procedures 2-1 Chapter 2 Initial Procedures T his chapter describes initial procedures that can help you diagnose a com- puter problem. These procedures can often reveal the source of a problem or indicate the correct starting point for troubleshooting the computer. Dell recom-mends that you...

2-2 Dell Latitude LM Systems Service Manual components, as instructed in the following procedure, see Chapter 4, “Remov-ing and Replacing Parts.” To perform a visual inspection, follow these steps: 1. Determine the power state of the computer. If the display is on, go to step 2. If the display is of...

Initial Procedures 2-3 12. If an external monitor is connected, verify the following: a. The monitor’s interface cable is properly attached to the external- monitor connector on the computer’s I/O panel. b. The monitor’s power cable is attached to a power source and is free of any obvious physical d...

2-4 Dell Latitude LM Systems Service Manual 3. Watch the indicators at the top of the keyboard. Depending on how your computer is configured, after various indicators flash momen-tarily in the status display panel, some indicators should light up and remain on. Do these indicators light up within se...

Initial Procedures 2-5 E liminating Resource Conflicts Devices within or connected to the computer may require dedicated memory spaces, interrupt levels, and/or DMA channels. Because different devices can be configured at different times, it is possible the same resource is assigned to two or more d...

Beep Codes and Error Messages 3-1 Chapter 3 Beep Codes and Error Messages T his chapter describes beep codes and system error messages that can occur during system start-up or, in the case of some failures, during normal computer operation. The tables in this chapter list faults that can cause a bee...

Beep Codes and Error Messages 3-3 S ystem Error Messages The following table lists (in alphabetical order) system error messages that may appear on the display during the boot routine or during normal computer operation. Table 3-2. System Error Messages Message Definition Probable Causes Diskette dr...

3-4 Dell Latitude LM Systems Service Manual Keyboard error Keyboard not respond-ing correctly. Built-in keyboard: Faulty keyboard or key pressed while com-puter booting. External keyboard: Cable or connector loose. Faulty keyboard or key pressed while computer booting. Operating system not found Ope...

Beep Codes and Error Messages 3-5 System CMOS checksum bad—run Setup CMOS has been cor-rupted or modified, pos-sibly by an application program that changes data stored in CMOS. BIOS has been updated. System RAM failed at off-set: nnnn Memory not operating correctly. System RAM failed at address nnnn...

3-6 Dell Latitude LM Systems Service Manual R unning the Dell Diagnostics The Dell diagnostics contains tests that aid in troubleshooting the computer. The diagnostics diskette contains the following test groups: • RAM — Tests the main memory • System Set — Tests the primary functions of the main bo...

Removing and Replacing Parts 4-1 Chapter 4 Removing and Replacing Parts T his chapter provides procedures for removing and replacing components, assemblies, and subassemblies. Unless otherwise noted, each of the procedures in this chapter assumes the following: • The computer and any attached periph...

4-2 Dell Latitude LM Systems Service Manual • Small scribe (or Delrin [plastic] screwdriver) • Nut drivers • Chip removal tool S crew Identification and Tightening . Figure 4-2. Screw Identification Where applicable, information about screw lengths is provided in illustrations. Before installing a s...

Removing and Replacing Parts 4-3 P recautionary Measures Before performing any of the procedures in this chapter, read the following warning. 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-...

Removing and Replacing Parts 4-5 Keep holding the latch with one hand while pulling the device (diskette drive, secondary battery, or CD-ROM) straight out of the options bay with the other. Figure 4-6. Diskette Drive, Secondary Battery, or CD-ROM Removal 7. Remove any PC Cards To remove a PC Card fr...

4-6 Dell Latitude LM Systems Service Manual Z IF Connectors Some of the computer’s interface connectors are zero insertion force (ZIF) con-nectors. These connectors are not removable; they must be released to disconnect a cable from them. To disconnect an interface cable from a ZIF connector, follow...

Removing and Replacing Parts 4-7 E xploded Views of Components and Assemblies . Figure 4-9. Exploded View—Computer LCD panel assembly keyboard bottom assembly diskette drive,secondary battery, or CD-ROM hard-disk drive main battery heat sink latch (2) power/ suspend indicator

4-8 Dell Latitude LM Systems Service Manual Figure 4-10. Exploded View—LCD Assembly front bezel LCD panel power/suspend indicator inverter board inverter board connector microphone latch back bezel LCD panel flex cable stiffener hinge (2)

Removing and Replacing Parts 4-9 . Figure 4-11. Exploded View—Top Assembly keyboard flex cable keyboard LCD flex- cable cover power button keyboard screw cover (2) hinge cover touch pad button (2) touch pad touch-pad button board infrared lens infrared board plastic housing (2) status-display panel ...

4-10 Dell Latitude LM Systems Service Manual . Figure 4-12. Exploded View—Bottom Assembly main board power board audio board cache board I/O panel door I/O bracket bottom assembly memory module cover processor board

Removing and Replacing Parts 4-11 F actory Repair Parts and Assemblies This section contains a parts list and procedures for removing and replacing fac-tory components and subassemblies. This information is provided for reference only. Dell does not recommend removal and replacement of these parts i...

4-12 Dell Latitude LM Systems Service Manual Board Assemblies (Continued) Board assembly, 133-MHz, service kit SVC,SYS,PLN,LMP133ST Main board SYS,PLN,3.3V TFT LCD,LMP Processor board, 133-MHz CRD,PRCR,LMP133 Card, cache CRD,L2,CACHE,LMP Heat sink, microprocessor, subassembly SUBASSY,HTSNK,CPU,LMP B...

4-14 Dell Latitude LM Systems Service Manual LCD Assembly LCD panel, active-matrix color display (TFT), 12.1” LCD,TFT,SVGA,12.1”,LMP,IBM Board, TFT inverter CRD,INVRTR,TFT,LMP Cable, TFT flex CBL,LCD,FLEX,TFT,IBM,LMP Bezel, TFT front BZL,LCD,LMP,IBM Bezel, TFT back CVR,LCD,LMP,IBM LCD panel, dual-sc...

Removing and Replacing Parts 4-15 Miscellaneous Parts (Continued) Cover, flex-cable CVR,HNG,CTR,LMP Insulator, expansion connector INSUL,CON,DCKG,LMP Insulator, main board INSUL,MYLAR,I/O,LMP Bracket, I/O BRKT,I/O,LMP Door, I/O DOOR,I/O,LMP Door, memory module DOOR,RAM,LMP Guide, hard-disk drive, le...

4-18 Dell Latitude LM Systems Service Manual D eleting the Password If a user forgets the password and does not have it backed up on diskette, the user must return the computer to the factory where a service provider will delete the password using the following procedure. The computer will then be r...

Removing and Replacing Parts 4-19 H ard-Disk Drive Figure 4-14. Hard-Disk Drive Disassembly The hard-disk drive resides in a carrier that mounts in the computer’s hard-disk drive compartment on the front of the computer. Four screws secure the drive inside the carrier. A mylar insulator provides ele...

4-20 Dell Latitude LM Systems Service Manual D iskette Drive Figure 4-15. Diskette Drive Assembly The diskette drive resides in a carrier that slides into the options drive bay on the right side of the computer. The diskette drive and carrier are replaced as a unit and are not disassembled. diskette...

4-22 Dell Latitude LM Systems Service Manual M emory Module . Figure 4-17. Memory Module Removal To remove a memory module, follow these steps: 1. Turn the computer over, and remove the two memory-module cover screws. 2. Remove the memory module cover. Grasp the two memory-module retainer clips and ...

Removing and Replacing Parts 4-23 L CD Assembly The LCD assembly consists of the display assembly and its related components. The subsections that follow provide removal and replacement procedures for the components of the LCD assembly. Figure 4-18. LCD Assembly Removal To remove the LCD assembly, f...

4-24 Dell Latitude LM Systems Service Manual Front Bezel NOTE: This figure shows the STN LCD assembly, which has the same front bezel as the TFT LCD assembly. Figure 4-19. Front Bezel Removal To remove the front bezel, follow these steps: 1. Remove the LCD assembly. See the previous section, “LCD As...

Removing and Replacing Parts 4-25 LCD Panel There are two types of LCD panels: the dual-scan color display (STN) and the active-matrix color display (TFT). The removal process for both LCD panels is the same. . Figure 4-20. LCD Panel Removal To remove an LCD panel, follow these steps: 1. Remove the ...

4-26 Dell Latitude LM Systems Service Manual Inverter Board . Figure 4-21. Inverter Board Removal To remove the inverter board, follow these steps: 1. Remove the front bezel. See “Front Bezel” found earlier in this section. 2. Remove the LCD panel. See the previous subsection, “LCD Panel.” 3. Discon...

Removing and Replacing Parts 4-27 LCD Assembly Latches Figure 4-22. LCD Assembly Latches Removal To remove the LCD assembly latches, follow these steps: 1. Remove the front bezel. See “Front Bezel” found earlier in this section. 2. Place the back bezel down on a work surface. 3. Use a scribe to pry ...

4-28 Dell Latitude LM Systems Service Manual Power/Suspend Indicator Figure 4-23. Power/Suspend Indicator Removal To remove the power/suspend indicator, follow these steps: 1. Remove the front bezel. See “Front Bezel” found earlier in this section. 2. Remove the LCD panel. See “LCD Panel” found earl...

Removing and Replacing Parts 4-29 Back Bezel Figure 4-24. Back Bezel Removal To remove the back bezel, follow these steps: 1. Remove the front bezel. See “Front Bezel” found earlier in this section. 2. Remove the LCD panel. See “LCD Panel” found earlier in this section. NOTE: Be careful when removin...

4-30 Dell Latitude LM Systems Service Manual K eyboard This section provides the removal procedure for the keyboard. Also, it includes the removal procedure for the heat sink. Figure 4-25. Keyboard Removal To remove the keyboard, follow these steps: 1. Open the computer. 2. Remove the keyboard screw...

Removing and Replacing Parts 4-31 4. Remove heat sink screws S3 and S4. Lift off 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. 6. Remove the keyboard from the computer. CAUTION: Lift a...

4-32 Dell Latitude LM Systems Service Manual T op Assembly The top assembly consists of the plastic palm rest and its related components. The subsections that follow provide removal and replacement procedures for the components of the top assembly. Figure 4-26. Top Assembly Removal hinge cover (2) k...

Removing and Replacing Parts 4-33 To remove the top assembly, follow these steps: 1. Remove the LCD panel. See “LCD Panel” found earlier in this chapter. 2. Remove the keyboard. See the previous section, “Keyboard.” 3. Remove side screws SD1 and SD2. 4. Disconnect the touch pad connector. Use a smal...

4-34 Dell Latitude LM Systems Service Manual Speakers Figure 4-27. Speakers Removal To remove the speakers, follow these steps: 1. Remove the top assembly. See the previous section, “Top Assembly.” 2. Remove speaker screws S5, S6, S22, and S23. Remove the plastic housing holding the speakers. 3. Dis...

Removing and Replacing Parts 4-35 Status Display Board Figure 4-28. Status Display Board Removal To remove the status display board, follow these steps: 1. Remove the top assembly. See “Top Assembly” found earlier in this section. 2. Remove status-display board screws S7, S8, and S9. 3. Disconnect t...

4-36 Dell Latitude LM Systems Service Manual I/R Device Figure 4-29. I/R Device Removal To remove the infrared (I/R) device, follow these steps: 1. Remove the top assembly. See “Top Assembly” found earlier in this section. 2. Disconnect the I/R device connector from the status display board. 3. Disl...

Removing and Replacing Parts 4-37 Power Button Figure 4-30. Power Button Removal To remove the power button, follow these steps: 1. Remove the top assembly. See “Top Assembly” found earlier in this section. 2. Remove the status display board. See “Status Display Board” found earlier in this section....

4-38 Dell Latitude LM Systems Service Manual Touch Pad Figure 4-31. Touch Pad Removal To remove the touch pad, follow these steps: 1. Remove the top assembly and turn it over. See “Top Assembly” found earlier in this section. 2. Remove touch pad screws S11, S12, and S13. Place the touch-pad button b...

Removing and Replacing Parts 4-39 B ottom Assembly This bottom assembly consists of a plastic base, the main board, and the main board components. The subsections that follow provide removal and replace-ment procedures for the components of the bottom assembly. Figure 4-32. Bottom Assembly cache boa...

4-40 Dell Latitude LM Systems Service Manual Processor Board Figure 4-33. Processor Board Removal To remove the processor board, follow these steps: 1. Open the cover. 2. Remove the keyboard. See “Keyboard” found earlier in this chapter. 3. Remove the processor board from the main board. The process...

Removing and Replacing Parts 4-41 Power Supply Board Figure 4-34. Power Supply Board Removal To remove the power supply 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 from the main board. Th...

4-42 Dell Latitude LM Systems Service Manual Audio Board Figure 4-35. Audio Board Removal To remove the audio board, follow these steps: 1. Open the cover. 2. Remove the top assembly. See “Top Assembly” found earlier in this chapter. 3. Remove the cable from the audio board. 4. Remove the audio boar...

Removing and Replacing Parts 4-43 Main Board 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...

4-44 Dell Latitude LM Systems Service Manual 6. Turn the computer around, open the I/O panel cover, and remove standoff nuts ST1, ST2, ST3, ST4, ST5, ST6, ST7, and ST8. Use a 3/16 nut driver to remove standoff nuts ST1 through ST6 and a 7/32 nut driver for ST7 and ST8. 7. Remove cover alignment scre...

Removing and Replacing Parts 4-45 Cache Board Figure 4-37. Cache Board Removal To remove the cache board, follow these steps: 1. Open the cover. 2. Remove the main board. See the previous subsection, “Main Board.” 3. Turn the main board over. 4. Remove the cache board from the main board. The cache ...