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____________________ Information in this document is subject to change without notice. © 2000 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 Before Working Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . 2 Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Disconnecting Interface Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.1-Inch Display Assembly Bezel and LCD Panel . . . . . . . . . . . . . . . . . 25 Removing the 12.1-Inch Display Assembly Bezel . . . . . . . . . . . . . . . 25 Removing the 12.1-Inch LCD Panel Inverter . . . . . . . . . . . . . . . . . . 26 Removing the 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 26 Replacing the 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 26 Replacing the 12.1-Inch LCD Panel Inverter . . . . . . . . . . . . . . . . . . .
7DEOHV Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Palmrest Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 31 Modem Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Thermal Cooling Assembly Removal. . . . . . . . . . . . . . . . . . . . 36 Module Latch Assemblies Removal . . . . . . . . . . . . . . . . . . . . 37 Left Module Latch and Spring . . . . .
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 the User’s 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 &3W 9 &3W 6 6HULHV DQG &3[ + &3[ - 6HULHV 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 that a part can be replaced by performing the removal procedure in reverse order. It is recommended that you use a book or something similar to support the display assembly when it is open nearly 180 degrees.
5HFRPPHQGHG 7RROV The procedures in this manual require the following tools: Number 1 magnetized Phillips-head screwdriver Small flat-blade screwdriver Small plastic scribe Microprocessor extractor 3UHSDULQJ WR :RUN ,QVLGH
127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ DQG VHFRQGDU\ EDWWHU\ LI SUHVHQW EHIRUH \RX VHUYLFH WKH FRPSXWHU 8. Remove the main battery from the battery bay. Slide the battery bay latch toward the right side of the computer. Then slide the battery out of the battery bay (see Figure 2). battery bay latch battery )LJXUH 0DLQ %DWWHU\ 5HPRYDO 9. Remove the secondary battery assembly (if present) from the modular bay. 10.
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 :LWK &RPSRQHQW 6FUHZ &RXQWV DQG 6L]HV Hard-Disk Drive Assembly: M3.0 x 5 (1 each) Display Assembly Bezel: Rubber Screw Covers (4 each) Plastic Screw Covers (2 each) 12.1-Inch Display Assembly LCD to Top Cover: M3.0 x 5 (4 each) System Board Assembly: M2.5 x 4 (2 each) (w/o modem assembly) M2.5 x 4 (1 each) M2.
'LVFRQQHFWLQJ ,QWHUIDFH &RQQHFWRUV 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 the cable from them (see Figure 4).
)LHOG 5HSODFHDEOH 3DUWV DQG $VVHPEOLHV Table 2 lists the parts and assemblies available for the computer. Some parts may only be available as part of a service kit or assembly and are provided for reference only. The subsections that follow Table 2 provide instructions for removing and replacing these parts and assemblies.
7DEOH 3DUWV DQG $VVHPEOLHV FRQWLQXHG 3DUW RU $VVHPEO\ 1DPH 2UGHU 1DPH )LJXUH +DUG 'LVN 'ULYH &DUULHU $VVHPEO\ Hard-disk drive carrier ASSY, CARR, HD 3DOPUHVW $VVHPEO\ Palmrest assembly ASSY, PLMRST, TPAD 20 Palmrest screws (5) SCR, M2.5X20, PHH, LP, ZPS 19 %DWWHU\ 5HVHUYH Reserve battery CUS, BTRY, RESERVE .H\ERDUGV 'XDO 3RLQWLQJ Euro-language specific keyboard KYBD, nn, iiii*, D-PTG, EMEA Asian-language specific keyboard KYBD, nn, iiii*, D-PTG, APCC English (U.K.
7DEOH 3DUWV DQG $VVHPEOLHV FRQWLQXHG 3DUW RU $VVHPEO\ 1DPH 2UGHU 1DPH 14.1 display, right hinge HNG, RT, LCD, 14.1 14.1 display, left hinge HNG, LF, LCD, 14.1 12.1 display, right hinge HNG, RT, LCD, 12.1 12.1 display, left hinge HNG, LF, LCD, 12.1 14.1-inch LCD panel screw SCR, M2X3, PHH, LP, ZPS 12.1-inch LCD panel screw SCR, M3X5, PHH, LP, ZPS 12.1-inch LCD inverter SCR, M3X3, PHH, LP, ZPS LCD hinge screw SCR, M2.5X4, PHH, LP, ZPS LCD bezel screw SCR, M2.
7DEOH 3DUWV DQG $VVHPEOLHV FRQWLQXHG 3DUW RU $VVHPEO\ 1DPH 2UGHU 1DPH )LJXUH 0HPRU\ 'RRU Memory door assembly DOOR, MEM, MET, NB 6\VWHP %RDUG $VVHPEO\ System board assembly, service kit SVCKIT, MB ASSY, PWA, ENGINE Service tag installation diskette DSK, BIOS, FLDSVC, F3, US BIOS flash diskette KIT, BIOS, FLASH, UPG, F3 Diagnostic diskette KIT, DSK, DIAG, F3, WW System board assembly ASSY, PWA, ENGINE Main system board PWA, PLN, 0M, NB Exhaust fan and cable FAN, 25X25X10 Thermal cool
5HPRYLQJ DQG 5HSODFLQJ )LHOG 5HSODFHDEOH 3DUWV DQG $VVHPEOLHV display assembly keyboard palmrest assembly internal modem (may not apply to your system) hard-disk drive system board main battery case plug for modem bottom case assembly modular bay device )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 5-mm screw M3.
0RGXODU %D\ 'HYLFHV 'LVNHWWH 'ULYH &' 520 'ULYH '9' 520 'ULYH &' 5: 'ULYH 6XSHU'LVN /6 'ULYH %DWWHU\ RU 7UDYHO 0RGXOH latch lock )LJXUH 0RGXODU %D\ 'HYLFH 5HPRYDO 127,&( 0DNH VXUH WKDW WKH ZRUN VXUIDFH LV FOHDQ WR SUHYHQW VFUDWFK LQJ WKH FRPSXWHU FRYHU 1. Close the display, and turn the computer upside down on a flat work surface. 2. Push the module latch toward the unlock icon.
0HPRU\ 0RGXOHV inner tabs (2 per socket) DIMM A DIMM B memory module sockets (2) )LJXUH 0HPRU\ 0RGXOH 5HPRYDO 5HPRYLQJ WKH 0HPRU\ 0RGXOHV 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the main battery and secondary battery (if present). 2. Remove the memory module cover.
2. Align the memory module’s edge connector with the slot in the center of the memory module socket. With the module at a 45-degree angle, press the memory module’s edge connector firmly into the memory module socket. 3. Pivot the memory module down until it clicks into place. If you do not hear a click as each end of the memory module snaps into the tabs, remove the memory module and reinstall it. 4. Replace the memory module cover. .
3. Remove the seven 10-mm screws, labeled with a “ circle K,” that secure the keyboard to the computer (see Figure 9). 4. Turn the computer right-side up and open the display. 127,&( 7KH NH\FDSV RQ WKH NH\ERDUG DUH IUDJLOH HDVLO\ GLVORGJHG DQG WLPH FRQVXPLQJ WR UHSODFH %H FDUHIXO ZKHQ UHPRYLQJ DQG KDQGOLQJ WKH NH\ERDUG 5. Release the keyboard from the palmrest assembly by inserting a small flat-blade screwdriver under the edge of the blank key (see Figure 10), and lift the right edge of the keyboard.
track stick cable keyboard cable )LJXUH .H\ERDUG DQG 7UDFN 6WLFN &DEOHV DQG &RQQHFWRUV 9. Disconnect the keyboard cable from the connector on the system board. The keyboard cable is the wide, flexible cable. 10. Carefully disconnect the track stick cable from the ZIF connector on the palmrest’s flexible printed circuit board. 11. Remove the keyboard assembly. 5HSODFLQJ WKH .H\ERDUG $VVHPEO\ 1. Place the keyboard on the left side of the computer with the keys face down (see Figure 11). 2.
127,&( 3RVLWLRQ WKH WUDFN VWLFN DQG NH\ERDUG FDEOHV VR WKH\ DUH QRW WZLVWHG ZKHQ \RX UHFRQQHFW WKHP WR WKH V\VWHP ERDUG 4. Carefully turn the keyboard over and fit the keyboard into place. Ensure that the track stick and keyboard cables are not twisted as you lower the keyboard into the palmrest. 5. To push the keyboard down, press on the blank key located below the right key. 6. Check that the keyboard is correctly installed.
0LFURSURFHVVRU 0RGXOH captive screws (3) 3-mm screws (2) microprocessor shield 4-mm screw (1) shield brace (may not apply to your system) thermal cooling assembly arm M2.5x4 M2.0x3 white marks on the microprocessor board (2) microprocessor module )LJXUH 0LFURSURFHVVRU 0RGXOH 5HPRYDO 5HPRYLQJ WKH 0LFURSURFHVVRU 0RGXOH 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the main battery and secondary battery (if present). 2.
NOTE: The microprocessor shield brace may not be present on your system, if the brace is not present continue with step 6. 5. Remove the 4-mm screw that secures the microprocessor shield brace (see Figure 12). 6. Remove the microprocessor shield. 7. Rotate the arm of the thermal cooling assembly up and away from the microprocessor module. 127,&( :KHQ UHPRYLQJ WKH PLFURSURFHVVRU PRGXOH SXOO WKH PRG XOH VWUDLJKW XS 'R QRW PRYH WKH WRRO IURP VLGH WR VLGH WR H[WUDFW WKH SURFHVVRU ERDUG 8.
'LVSOD\ $VVHPEO\ display assembly hinge cover LCD flex cable snap tab bottom case assembly 4-mm screws (3) snap tab M2.5x4 )LJXUH 'LVSOD\ $VVHPEO\ 5HPRYLQJ WKH 'LVSOD\ $VVHPEO\ 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 127,&( 'R QRW UHPRYH WKH SDOPUHVW EHIRUH \RX UHPRYH WKH GLVSOD\ 1. Remove the main battery and secondary battery (if present). 2. Remove the keyboard. 3.
,QFK 'LVSOD\ $VVHPEO\ %H]HO DQG /&' 3DQHO O rubber screw covers (4) display assembly bezel 4-mm screws (6) plastic screw covers (2) plastic tabs (6) LCD panel bezel latch hinge cover LCD flex cable M2.0x3 M2.5x4 display-assembly top cover 3-mm screws (6) )LJXUH ,QFK 'LVSOD\ $VVHPEO\ %H]HO 5HPRYLQJ WKH ,QFK 'LVSOD\ $VVHPEO\ %H]HO 1.
3. Use a scribe to carefully pry the two plastic screw covers out of the two screw holes located at the bottom of the bezel on the front of the display assembly. 4. Remove the two 4-mm screws from the bottom of the bezel. 127,&( 7KH EH]HO WDEV DUH IUDJLOH +DQGOH WKH EH]HO FDUHIXOO\ WR DYRLG EUHDNLQJ WKH SODVWLF WDEV RII 5. Separate the bezel from the display-assembly top cover.
5HSODFLQJ WKH ,QFK /&' )OH[ &DEOH 1. Find the manufacturer’s name, either Samsung or IBM/Hitachi, on the back of the replacement LCD panel. 2. If your replacement LCD panel is a Samsung — Install the display bezel clip (if one is not present) by placing the bezel slot over the hinge tab and pressing gently until it snaps (see Figure 15). If your replacement LCD panel is an IBM/Hitachi — Remove the display bezel clip (if present) by gently prying it up with a small-blade screwdriver (see Figure 15).
5HSODFLQJ WKH ,QFK /&' 3DQHO NOTE: Use a magnetic screwdriver to reassemble the LCD panel in the display. Secure the right side first. 1. Place the bottom edge of the LCD panel in the bottom of the top cover and elevate the top of the panel with your hand. 2. Carefully connect the LCD flex cable to the connector on the left edge of the LCD panel. Do not force the LCD flex cable into the connector. If you have trouble, check to make sure the LCD flex cable is aligned correctly and try again. 3.
,QFK 'LVSOD\ $VVHPEO\ %H]HO DQG /&' 3DQHO rubber screw covers (4) display assembly bezel 4-mm screws (6) plastic screw covers (2) 5-mm screws (4) LCD panel back-light plug latch inverter LCD flex cable ZIF connector 3-mm screws (3) M3.0x3 M2.5x4 M3.0x5 display-assembly top cover )LJXUH ,QFK 'LVSOD\ $VVHPEO\ 5HPRYLQJ WKH ,QFK 'LVSOD\ $VVHPEO\ %H]HO 1. Remove the four 5-mm screws securing the LCD panel to the top cover. 2.
5HPRYLQJ WKH ,QFK /&' 3DQHO ,QYHUWHU 1. Disconnect the LCD flex cable from the ZIF connector on the inverter. 2. Remove the three 3-mm screws securing the inverter to the top cover. 3. Remove the inverter from the top cover. 5HPRYLQJ WKH ,QFK /&' )OH[ &DEOH 1. Remove the 4-mm screw securing the metal cable clip to the left hinge of the display-assembly top cover. 2. Remove the cable out from under the plastic strain relief retainer located on the bottom of the display-assembly hinge cover. 3.
7. Fold the LCD flex cable at the crease as shown in Figure 17, so that the name of the LCD panel manufacturer faces up. The manufacturer is either Torisan (T-Sanyo) or Sharp. The connectors are identical on the Torisan and Sharp LCD panels, but they are mounted reverse with respect to each other. This means that pin 1 on the Torisan panel connector is at the opposite end when compared to pin 1 on the Sharp panel connector. The LCD flex cable can connect to either panel by making one fold to the cable.
back-light connector ZIF connector jumpers label inverter )LJXUH ,QFK /&' ,QYHUWHU 3. Place the inverter in the cover top. 4. Reinstall the three 3-mm screws that secure the inverter to the top cover. 5. Connect the LCD flex cable to the ZIF connector on the inverter. 5HSODFLQJ WKH ,QFK /&' 3DQHO 1. Find the manufacturer’s name on the back of the LCD panel that is to be installed. The manufacturer is either Torisan or Sharp. 2.
7. Connect the two-wire back-light plug to the connector on 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. If you can see the key slot, the plug is not in the connector correctly. Pull the plug out, turn the plug over, and reinsert it into the connector. 8. Reinstall the four 5-mm screws to secure the LCD panel to the top cover.
3DOPUHVW $VVHPEO\ The palmrest assembly consists of the touch pad and the palmrest. 127,&( 7KH UHVHUYH EDWWHU\ SURYLGHV SRZHU WR WKH FRPSXWHU·V WLPH 57& DQG 195$0 ZKHQ WKH FRPSXWHU LV WXUQHG RII 5HPRYLQJ WKH SDOPUHVW GLVFRQQHFWV WKH UHVHUYH EDWWHU\ DQG FDXVHV WKH FRPSXWHU WR ORVH WKH GDWH DQG WLPH LQIRUPDWLRQ DV ZHOO DV DOO XVHU VSHFLILHG SDUDPHWHUV LQ 195$0 ,I SRVVLEOH PDNH D FRS\ RI WKLV LQIRUPDWLRQ EHIRUH \RX GLVFRQQHFW WKH UHVHUYH EDWWHU\ 20-mm screws (5) M2.
127,&( 0DNH VXUH WKDW WKH ZRUN VXUIDFH LV FOHDQ WR SUHYHQW VFUDWFK LQJ WKH FRPSXWHU FRYHU 5. Turn the computer upside down on a flat work surface. 6. Remove the five 20-mm screws that secure the palmrest to the computer. These screws, labeled with a “ circle P,” are located underneath the front edge of the computer (see Figure 19). 7. Turn the computer right-side up on the work surface. 8. Disconnect the palmrest flex cable from the touch-pad connector on the system board (see Figure 20).
5HVHUYH %DWWHU\ 127,&( 7KH UHVHUYH EDWWHU\ SURYLGHV SRZHU WR WKH FRPSXWHU·V 57& DQG 195$0 ZKHQ WKH FRPSXWHU LV WXUQHG RII 5HPRYLQJ WKH EDWWHU\ FDXVHV WKH FRPSXWHU WR ORVH WKH GDWH DQG WLPH LQIRUPDWLRQ DV ZHOO DV DOO XVHU VSHFLILHG SDUDPHWHUV LQ 195$0 ,I SRVVLEOH PDNH D FRS\ RI WKLV LQIRUPDWLRQ EHIRUH \RX UHPRYH WKH UHVHUYH EDWWHU\ 5HPRYLQJ WKH 5HVHUYH %DWWHU\ 1. Remove the main battery and secondary battery (if present). 2. Remove the device from the modular bay (if present). 3.
0RGHP $VVHPEO\ The modem assembly is optional. The modem (if present) must be removed before the main system board can be removed (see Figure 21). 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 5HPRYLQJ WKH 0RGHP $VVHPEO\ 1. Remove the main battery and secondary battery (if present). 2. Remove the keyboard assembly. 3. Remove the display assembly. 4. Remove the palmrest assembly. 5.
6\VWHP %RDUG $VVHPEO\ The system board’s basic input/output system (BIOS) chip contains the system service tag number, which is also visible on a bar-code label on the bottom of the computer. The replacement kit for the system board assembly includes a diskette that provides a utility for transferring the service tag number to the replacement system board assembly. 5HPRYLQJ WKH 6\VWHP %RDUG 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1.
system board assembly 4-mm screw with captive washers 10-mm screw (system with modem) or 4-mm screw (system without modem) white marks on the system board M2.5x4 M2.5x10 bottom case assembly )LJXUH 6\VWHP %RDUG $VVHPEO\ 10. Remove the modem (if present). 11. Lift the system board assembly out of the bottom case assembly. 5HSODFLQJ WKH 6\VWHP %RDUG 1. Install the replacement system board. 2. Replace the modem (if present). 3. Replace the system board mounting screws. 4.
7KHUPDO &RROLQJ $VVHPEO\ 4-mm screws (2) M2.5x4 thermal cooling assembly and exhaust fan )LJXUH 7KHUPDO &RROLQJ $VVHPEO\ 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the main battery and secondary battery (if present). 2. Remove the device from the modular bay. 3. Remove the keyboard assembly. 4. Remove the display assembly. 5. Remove the palmrest assembly. 6. Remove the microprocessor module. 7.
0RGXOH /DWFK $VVHPEOLHV sliders (2) module latches (2) springs (2) location of snap tabs (2) bottom case assembly module latch button (2) )LJXUH 0RGXOH /DWFK $VVHPEOLHV 5HPRYDO 127,&( 7R DYRLG GDPDJLQJ WKH V\VWHP ERDUG \RX PXVW UHPRYH WKH PDLQ EDWWHU\ EHIRUH \RX VHUYLFH WKH FRPSXWHU 1. Remove the main battery and secondary battery (if present). 2. Remove the device from the modular bay. 3. Remove the keyboard assembly. 4. Remove the display assembly. 5. Remove the palmrest assembly. support.
6. Remove the left module latch button from the bottom case assembly by carefully squeezing the snap tabs (see Figure 25). Apply pressure to the module latch and spring while unsnapping the snap tabs to prevent the module latch assembly from coming loose from the case. If the module latch assembly does come loose from the case: a. Carefully reinsert the spring onto the slider on the module latch, and reinstall the module latch into the holding features on the inside of the case. b.
,QGH[ 1XPEHUV ' 12.1-inch LCD display panel removal, 25 replacement, 28 diskette drive removal, 12 12.1-inch LCD flex cable removal, 26 replacement, 26 12.1-inch LCD panel inverter removal, 26 replacement, 27 14.1-inch LCD display panel removal, 22 14.1-inch LCD flex cable removal, 22 % battery (in modular bay) removal, 12 battery (reserve) removal, 32 display assembly bezel, removal, 21 removal, 20 display assembly latch removal, 29 display panel, 12.
+ 5 hard-disk drive assembly removal, 11 reserve battery removal, 32 , 6 inverter, 12.1-inch LCD panel removal, 26 replacement, 27 screw identification and tightening, 3 .
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