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____________________ Information in this document is subject to change without notice. © 1999 Dell Computer Corporation. All rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden. Trademarks used in this text: Dell, the DELL logo, and Latitude are trademarks of Dell Computer Corporation.
&RQWHQWV Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Preparing to Work Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Screw Identification and Tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 ZIF Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Removing Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . .
Figure 3. Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 4. Disconnecting an Interface Cable. . . . . . . . . . . . . . . . . . . . . . . .5 Figure 5. Exploded ViewComputer . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Figure 6. Hard-Disk Drive Assembly Removal. . . . . . . . . . . . . . . . . . . . . .7 Figure 7. Bottom Memory Module Removal. . . . . . . . . . . . . . . . . . . . . . .8 Figure 8. Top Memory Module Removal . . . . . . . . . . . .
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5HDG 7KLV )LUVW A prerequisite for using this manual to service 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 theUsers Guide for troubleshooting procedures and instructions on using the Dell Diagnostics to test the computer system. 1RWHV 1RWLFHV DQG &DXWLRQV Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type.
'HOO /DWLWXGH &6 3RUWDEOH &RPSXWHUV 6HUYLFH 0DQXDO This manual provides instructions for removing and replacing field-replaceable components, assemblies, and subassemblies in your Dell Latitude portable computer. Unless otherwise noted, each procedure in this manual assumes the following conditions: The computer and any attached peripherals are turned off, and the peripherals are disconnected from the I/O panel on the back and right side of the computer.
5HFRPPHQGHG 7RROV 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 7-mm socket wrench Small plastic scribe 3UHSDULQJ WR :RUN ,QVLGH
battery battery latch )LJXUH 0DLQ %DWWHU\ $VVHPEO\ 5HPRYDO 9. Ground yourself by touching the unpainted metal surface of the I/O panel on the back of the computer. While you work, periodically touch the I/O panel to dissipate any static electricity that might harm components. 6FUHZ ,GHQWLILFDWLRQ DQG 7LJKWHQLQJ The illustrations in the following removal procedures provide lengths of the correct screws for each procedure. Figure 3 shows examples.
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. 7DEOH 6FUHZ 3ODFHPHQW 0DW ZLWK &RPSRQHQW 6FUHZ &RXQWV DQG 6L]HV Hard-Disk Drive Assembly: Memory Module Cover: M2 x 4 mm (2 each) M2.6 x 3 mm (2 each) Display Assembly, including Bezel: 4 M2.
=,) &RQQHFWRUV Some of the computers 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).
5HPRYLQJ )LHOG 5HSODFHDEOH 3DUWV DQG $VVHPEOLHV display assembly keyboard left hinge cover status indicator panel palmrest assembly right hinge cover thermal cooling solution system board bottom case assembly hard-disk drive media-bay port cover main battery )LJXUH ([SORGHG 9LHZ³&RPSXWHU The following subsections provide instructions for removing and replacing field-replaceable parts and assemblies.
+DUG 'LVN 'ULYH $VVHPEO\ bottom of computer M2 x 4-mm screw(2) hard-disk drive door )LJXUH +DUG 'LVN 'ULYH $VVHPEO\ 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 127,&( 7KH KDUG GLVN GULYH LV YHU\ VHQVLWLYH WR VKRFN +DQGOH WKH DVVHPEO\ E\ LWV HGJHV GR QRW VTXHH]H WKH WRS RI WKH KDUG GLVN GULYH FDVH DQG DYRLG GURSSLQJ LW 127,&( 0DNH VXUH WKDW WKH ZRUN VXUIDFH LV FOHDQ WR SUHYHQW VFUDWFK LQJ WKH FRPSXWHU FRYHU 1.
%RWWRP 0HPRU\ 0RGXOH memory module memory module socket inner tabs (2) )LJXUH %RWWRP 0HPRU\ 0RGXOH 5HPRYDO To remove the bottom memory module, perform the following steps. 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 127,&( 7KH 0% PHPRU\ PRGXOH GRHV QRW ILW LQ WKH ERWWRP PHPRU\ PRGXOH VRFNHW 1. Remove the memory module cover. 2.
7RS 0HPRU\ 0RGXOH memory module inner tabs (2) )LJXUH 7RS 0HPRU\ 0RGXOH 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the status indicator panel. Use a flat-blade screwdriver to press in on the three tabs that secure the status indicator panel to the back panel of the computer (see Figure 9). 2. Remove the keyboard (see Figure 13). 3. Remove the thermal cooling solution (see Figure 18). 4.
6. Lift the memory module out of its socket. tabs (3) )LJXUH 6WDWXV ,QGLFDWRU 3DQHO 5HPRYDO To replace a memory module, perform the following steps. 127,&( 7KH 0% PHPRU\ PRGXOH ILWV WKH WRS PHPRU\ PRGXOH VRFNHW RQO\ 1. Align the memory modules edge connector with the slot in the center of the memory module socket. Memory modules are keyed, or designed to fit into their sockets in only one direction.
'LVSOD\ $VVHPEO\ display assembly M2.6 x 6-mm screws (4) display-assembly interface wire left hinge cover display-assembly inverter wire status indicator panel right hinge cove )LJXUH 'LVSOD\ $VVHPEO\ 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the status indicator panel. 2. Remove the right plastic hinge cover by sliding it to the right of the display assembly. 3. Remove the two M2.
5. Remove the two M2.6 x 6-mm hinge screws that secure the left hinge to the bottom case. 6. Carefully disconnect the display-assembly interface wire connector, located on the left side of the display assembly, from the system board. The female connector attached to the display-assembly interface wire is keyed to fit into the male connector one way only. On some models, the interface wire is routed under the left hinge.
'LVSOD\ $VVHPEO\ %H]HO O large rubber screw covers (2) M2 x 4-mm screws (6) display-assembly bezel small rubber screw covers (4) latch LCD panel M2 x 4-mm screws (6) left hinge inverter display-assembly interface wire display-assembly top cover display-assembly inverter wire right hinge )LJXUH 6KDUS 'LVSOD\ $VVHPEO\ %H]HO 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1.
O large rubber screw covers (2) M2 x 4-mm screws (8) display-assembly bezel LCD panel small rubber screw covers (4) tabs (2) Samsung identification notch latch notches (2) M2 x 4-mm screws (6) left hinge inverter display-assembly interface wire display-assembly top cover display-assembly inverter wire right hinge )LJXUH 6DPVXQJ 'LVSOD\ $VVHPEO\ %H]HO 5HPRYDO the six M2 x 4-mm screws located at the top and bottom of the bezel on the front of the display assembly (see Figure 12). 3.
127,&( $ PDJQHW LV PRXQWHG RQ WKH EDFN VLGH RI WKH EH]HO EHKLQG WKH OHIW KLQJH H[WHQVLRQ FRYHU .HHS GLVNHWWHV DQG RWKHU PDJQHWLF VWRUDJH PHGLD DZD\ IURP WKLV DUHD WR DYRLG WKH SRWHQWLDO IRU GDWD ORVV 'LVSOD\ $VVHPEO\ /DWFK 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the Sharp display-assembly bezel (seeFigure 11), or the Samsung display-assembly bezel (see Figure 12). 2.
127,&( 6DPVXQJ /&' SDQHOV KDYH WZR 0 [ PP VFUHZV ORFDWHG RQ WKH ULJKW VLGH RI WKH SDQHO 5HPRYH WKHVH VFUHZV EHIRUH URWDWLQJ WKH SDQHO 6. Rotate the top of the LCD panel away from the display-assembly top cover. 7. From the back side of the LCD panel, carefully disconnect the displayassembly interface cable connector. 8. Disconnect the display-assembly inverter wire connector from the bottom of the inverter (see Figure 11 for a Sharp LCD panel or Figure 12 for a Samsung LCD panel).
If you have a Sharp or Samsung LCD panel, the inverter is held in place by two plastic clips located at the top and bottom of the inverter. Press down on the top of the inverter, and then rotating the top up and slide the inverter out of the bottom clip. 6. Remove the old display-assembly interface wire, LCD panel, and displayassembly inverter wire.
3. Make sure that the six hooks on the shipping bezel hold the LCD panel firmly in place behind. .H\ERDUG $VVHPEO\ M2 x 16-mm black screws 2) ( keyboard assembly )LJXUH 5HPRYLQJ WKH .H\ERDUG $VVHPEO\ 6FUHZV To remove the keyboard assembly, perform the following steps. 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 127,&( 0DNH VXUH WKDW WKH ZRUN VXUIDFH LV FOHDQ WR SUHYHQW VFUDWFKLQJ WKH FRPSXWHU FRYHU 1.
NOTE: Five metal tabs retain the bottom of the keyboard in the palmrest assembly. 5. Remove the keyboard assembly (see Figure 13). To replace the keyboard assembly, perform the following steps. 127,&( 3RVLWLRQ WKH NH\ERDUG FDEOH VR LW LV QRW WZLVWHG ZKHQ FRQ QHFWHG WR WKH V\VWHP ERDUG 1. Connect the keyboard cable to the connector on the system board. 2. Fit the keyboard into place by sliding the five tabs on the bottom of the keyboard into the palmrest assembly. 3.
127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the display assembly (see Figure 10). 2. Remove the keyboard (see Figure 13). 3. Remove the two M2 x 2.5-mm screws located at the top of the palmrest assembly (see Figure 15). 127,&( 0DNH VXUH WKDW WKH ZRUN VXUIDFH LV FOHDQ WR SUHYHQW VFUDWFKLQJ WKH FRPSXWHU FRYHU 4. Turn the computer upside down on a flat work surface. 5.
M2 x 2.
%RWWRP $VVHPEO\ thermal cooling solution fan assembly main battery release latch location system board assembly main battery compartment reserve battery touch pad bottom case cover )LJXUH %RWWRP $VVHPEO\ The bottom assembly consists of the following field-replaceable components: Reserve battery Main battery Main battery release latch Thermal cooling solution System board assembly Fan assembly Touch pad Bottom case cover 5HVHUYH %DWWHU\ 127,&( 7KH UHVHUYH EDWWHU\ SURYLGHV
3. Disconnect the reserve battery cable from the connector on the system board and lift the reserve battery (see Figure 16). The reserve battery is located behind the hard-disk drive, and is attached to the system board with an adhesive foam pad. 4. Tear the reserve battery free from the foam pad. 5. Remove the remnants of the foam pad from the system board. 0DLQ %DWWHU\ See the Preparing to Work Inside Your Computer section found earlier in this manual for detailed instructions for removing the battery.
7. Grasp the top of the battery release latch and gently pull up to free it from the release button assembly, which is located underneath the system board (see Figure 17). The battery release latch is mounted on the back side of the battery compartment next to the system board assembly. 127,&( :KHQ UHLQVWDOOLQJ WKH EDWWHU\ UHOHDVH ODWFK FRQQHFW WKH WRXFK SDG FDEOH WR WKH =,) FRQQHFWRU RQ WKH V\VWHP ERDUG DIWHU LQVWDOOLQJ WKH EDWWHU\ UHOHDVH ODWFK 8.
127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU NOTE: The thermal cooling solution screw holes are labeled with screw sizes and numbered for the order that the screws should be removed or installed. 1. Remove the keyboard assembly (see Figure 13). 2. Remove the four M2 x 13-mm screws grouped around the section of the thermal cooling solution that covers the microprocessor (see Figure 18).
6\VWHP %RDUG $VVHPEO\ system board M2 X 4-mm screws (8) M2.6 X 6-mm screws (2) PC Card cover fan assembly 7-mm sockets (2) fan wire connector 5-mm sockets (4) touch pad M2 X 2.5 screws (2) media-bay port cover media-bay port screws (2) M2 X 2.5 screws (2) )LJXUH 6\VWHP %RDUG $VVHPEO\ 5HPRYDO The system boards BIOS chip contains the system service tag number, which is also visible on a bar-code label on the bottom of the computer.
To remove the system board assembly, perform the following steps. 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the palmrest assembly (see Figure 15). 2. Remove the thermal cooling solution (see Figure 18). 127,&( 7R HQVXUH PD[LPXP FRROLQJ IRU WKH PLFURSURFHVVRU GR QRW WRXFK WKH KHDW WUDQVIHU DUHDV RQ WKH WKHUPDO FRROLQJ DVVHPEO\ 7KH RLOV LQ \RXU VNLQ UHGXFH WKH KHDW WUDQVIHU FDSDELOLW\ RI WKH WKHUPDO SDGV 3.
If the socket is type A, use a flat-blade screwdriver to turn the cam 180 degrees counterclockwise. When the cam is in the open position, the triangular-shaped pointer on the cam points toward the O (open position), and a view window, on the lower right-hand side of the cam, displays a full circle (see Figure 20, type-A socket). Grasp the edges of the microprocessor to lift it out of the socket.
open position microprocessor view window socket type-A socket open position microprocessor socket type-B socket )LJXUH 0LFURSURFHVVRU 5HPRYDO 7RXFK 3DG 1. Remove the palmrest assembly (see Figure 15). 2. Remove the two M2 x 2.5-mm screws from the top of the touch pad (see Figure 19). 3. Carefully disconnect the ZIF connector to release the touch pad cable from the system board (refer to Figure 4). 4. Remove the touch pad. )DQ $VVHPEO\ 1. Remove the palmrest assembly (see Figure 15). 2.
The female connector on the fan wire is keyed to fit into the male connector one way only. 4. Remove the two M2 x 4-mm screws that secure the fan assembly to the bottom assembly.
,QGH[ % / bottom assembly components, 22 illustrated, 22 LCD panel removal, 15 0 ' display assembly bezel removal, 13, 14 removal, 11 ) fan removal, 29 field-replaceable parts and assemblies illustrated, 6 * grounding to dissipate static electricity, 3 main battery release latch removal, 23 removal, 3, 23 memory module cover removal, 8 removal, 8 microprocessor removal, 29 3 palmrest assembly removal, 21 screws removal, 19 5 reserve battery removal, 22 + hard-disk drive assembly removal, 7 6 scr
illustration, 26 removal, 26 7 thermal cooling solution removal, 24 tools, 2 top memory module removal, 9 touch pad removal, 29 32 Dell Latitude CS Portable Computers Service Manual = ZIF connectors, 5
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