dell latitude lm update User Manual

Dell Latitude LM Service Manual Update 1
Dell®Latitude® LM
Service Manual Update
T
his document updates information contained in the Dell Latitude LM Service 
Manual.
New System Features
Additional system features include:
•Now available with a 166-MHz Intel® Pentium® microprocessor with 
MMX™ technology in the Dell Latitude LM M166ST, which has the same 
features as other models of the computer.
•Support for a maximum of 72 MB of system memory by installing a 
matched pair of 32-MB memory modules in the...

2 Dell Latitude LM Service Manual Update
Technical Specifications
The following information updates Table A-1, “Technical Specifications,” in 
Appendix A.
 Technical Specifications 
Microprocessor
Microprocessor type/speed . . .  Pentium microprocessor with MMX tech-
nology/166 MHz or Pentium microprocessor/
133 MHz
Internal cache . . . . . . . . . . . . .  32 KB (Pentium microprocessor with MMX 
technology) or 16 KB (133-MHz Pentium 
microprocessor)
External cache  . . . . . . . . . . . .  256-KB...

Dell Latitude LM Service Manual Update 3
Video
Video type . . . . . . . . . . . . . . . .  64-bit (128-bit hardware accelerated) PCI
Video controller  . . . . . . . . . . .  NeoMagic 2093 (systems with MMX technol-
ogy) or NeoMagic 2070
Video memory. . . . . . . . . . . . .  1.1 MB (systems with MMX technology) or 
896 KB
Battery
Type. . . . . . . . . . . . . . . . . . . . .  lithium ion
Dimensions:
Height . . . . . . . . . . . . . . . .  22.0 mm (0.86 inch) 
Depth. . . . . . . . . . . . . . . . .  219.0...

4 Dell Latitude LM Service Manual Update
Additional Parts and Assemblies
Removal and replacement procedures for all parts and assemblies are the same as 
those described in Chapter 4, “Removing and Replacing Parts.” However, some 
of the parts and assemblies used are different. The following information updates 
Table 4-1, “Factory Repair Parts and Assemblies,” in Chapter 4.  
CD-ROM Drive (continued)
Voltage  . . . . . . . . . . . . . . . . . .  5 V (single-voltage drive)
Access time. . . . . . . . . ....

Dell Latitude LM Service Manual Update 5
Board Assemblies (continued)
Foil, metal EMI SHLD,EMI,AL,W/CNDCT 
ADH,LMM
Insulator, power supply INSUL,MYLAR,BD,CONV,
DC-DC.LMP
Board, power supply CRD,CONV,DC-DC,LMM
Insulator, main board INSUL,MYLAR,BD,CONV,
DC-DC,LMP
Boards and Cards
Cable, flex, audio jack  CBL,FLEX,JK,AUD,W/EMI,LM
CD-ROM
CD-ROM, service kit*CUS,CD ROM,6X,LMP
CD-ROM drive CD ROM,6X,LMP
CD-ROM, service kit
*CUS,CD ROM,I,INT,10X,LMP
CD-ROM drive CD ROM,I,INT,10X,LM
Hard-Disk Drive Assemblies...

6 Dell Latitude LM Service Manual Update
LCD Assembly (continued)
Board, TFT inverter  CRD,INVRTR,TFT,SMSNG,LM
Cable, TFT flex CBL,FLEX,LCD,TFT,SMSNG,LM
Bezel, TFT back CVR,BK,LCD,TFT,SMSNG,LM
LCD, LG, service kit SVC,LCD/FPC/INV,TFT,LMM,LG
LCD panel, active-matrix color 
display (TFT), 12.1”LCD,TFT,SVGA,12.1”,LMP,LG
Board, TFT inverter 
CRD,INVRTR,TFT,LMP,LG
Cable, TFT flex CBL,FLEX,LCD,TFT,LG,
W/EMI,LM
Bezel, TFT back
CVR,BK,LCD,TFT,LMP,LG
Memory
Memory module, 64-MB SODIMM, 
service...

Dell Latitude LM Service Manual Update 7
EMI Changes
The following EMI changes may have been made to your computer, and the 
sections in Chapter 4 should be updated to reflect these changes.
Keyboard
The heat sink in your computer may be slightly different from the one shown in 
Figure 4-25. There may be a conductive sponge added to your computer.
Top Assembly
If you have a Latitude MMX computer, use the following figure for the removal 
and replacement procedure. The top assembly has two hard-disk drive...

8 Dell Latitude LM Service Manual Update
When you separate the top assembly from the bottom assembly, peal the kapton 
tape from the EMI foil.
Before replacing the top assembly, replace the old EMI foil with a new EMI foil 
and replace the old kapton tape with a new piece of kapton tape.
Bottom Assembly
The bottom assembly in your computer may have an I/O EMI shield and con-
ductive sponges in addition to the components shown in Figure 4-32. 
Audio Board
The audio cable may be wrapped in EMI cloth....

Dell Latitude LM Service Manual Update 9
Main Board Switches 
If you are replacing the main board in a Latitude LM M166ST or in a Latitude 
LM P133ST with the EMI cloth tape on the audio cable (system board #82224), 
use the following procedure to adjust the EMI cloth-covered audio cable:
1. Remove the main board from the shipping container.
2. Remove the foam pad by sliding it out from under the audio cable.
3. Install the main board in the computer.
main 
board
SW2