User manual DELL LATITUDE C600 - Service Manual

DellTM LatitudeTM C600/C500 Series SERVICE MANUAL www.dell.com support.dell.com DellTM LatitudeTM C600/C500 Series SERVICE MANUAL www.dell.com support.dell.com Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. ____________________ Information in this document is subject to change without notice. © 2001 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 DellWare are trademarks of Dell Computer Corporation; Intel is a registered trademark of Intel Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own. May 2001 P/N 82EWX Rev. A01 Contents 1 Before You Begin Preparing to Work Inside the Computer Recommended Tools Screw Identification .............. 10 11 12 ........................ ........................ 2 Removing and Replacing Parts Components Hard Drive ............................ ............................. .................... .................... 16 17 17 17 18 18 19 20 20 22 22 23 23 25 26 30 30 Removing the Hard Drive Replacing the Hard Drive Memory Module .......................... .............. Removing the Memory Module Cover Removing the Memory Modules Replacing the Memory Modules Mini-PCI Card Assembly ................. ................. ...................... ............. ............. Removing the Mini-PCI Card Assembly Replacing the Mini-PCI Card Assembly Keyboard Assembly . ........................ ................ ................ Removing the Keyboard Assembly Replacing the Keyboard Assembly Removing the Display Assembly .................. ........ Removing the 14.1-Inch Display Assembly Bezel Removing the 14.1-Inch Display Panel ............. Contents 5 Replacing the 14.1-Inch Display Panel ............. 31 34 34 35 35 Removing the Display-Feed Flex Cable (14.1-Inch Display Panel) 32 Removing the 12.1-Inch Display Assembly Bezel Removing the 12.1-Inch Display Panel Replacing the 12.1-Inch Display Panel Replacing the Display-Assembly Top Cover ........ ............. ........... ............. Removing the Display-Feed Flex Cable (12.1-Inch Display Panel) 36 Display Assembly Latch ...................... .............. 37 37 39 39 40 41 41 44 44 45 46 47 47 48 49 49 50 50 51 53 53 54 56 Removing the Display Assembly Latch Hinge Covers ............................ ................... ................... Removing the Hinge Covers Replacing the Hinge Covers Palmrest Assembly ......................... ................ ............ .... Removing the Palmrest Assembly Microprocessor Thermal Cooling Assembly Removing the Microprocessor Thermal Cooling Assembly Hybrid Cooling Fan ......................... ................ Removing the Hybrid Cooling Fan Microprocessor Module . ...................... .............. .............. Removing the Microprocessor Module Replacing the Microprocessor Module Reserve Battery . .......................... ................. ................. Removing the Reserve Battery . Replacing the Reserve Battery . Speaker Assemblies . ........................ ............... Removing the Speaker Assemblies . Replacing the Speaker Assembly System Board Assembly Replacing the System ................ ...................... .................. Removing the System Board . Board . . . . . . . . . . . . . . . . . . . Contents 6 Battery and Modular Bay Latch Assemblies ............ ... 57 57 Removing the Battery and Modular Bay Latch Assemblies . Index ................................... 59 Contents 7 8 Conte n ts SECTION 1 Before You Begin Preparing to Work Inside the Computer Recommended Tools Screw Identification w w w. d e l l . c o m | s u p p o r t . d e l l . c o m w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Preparing to Work Inside the Computer NOTICE: Only a certified service technician should perform repairs on your system. Damage due to servicing that is not authorized by Dell is not covered by your warranty. NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer. 1 2 3 Make sure that the work surface is clean to prevent scratching the computer cover. Save any work in progress and close all open application programs. Turn off the computer and all attached devices. NOTE: Make sure the computer is turned off and not in suspend-to-disk or hibernate mode. If you cannot shut down the computer using the computer's operating system, press and hold the power button for 4 seconds. 4 5 6 7 8 9 Make sure the computer is undocked. Disconnect the computer from the electrical outlet. To avoid possible damage to the system board, wait 10 to 20 seconds and then disconnect any attached devices. Disconnect all other external cables from the computer. Remove any installed PC Cards or plastic blanks from the PC Card slot. Close the display and turn the computer upside down on a flat work surface. NOTICE: To avoid damaging the system board, you must remove the main battery and secondary battery (if present) before you service the computer. 10 11 12 Remove the primary battery from the battery bay and the secondary battery from the modular bay, if a secondary battery is in use. Remove any installed device in the modular bay. To dissipate any static electricity while you work, use a wrist grounding strap or periodically touch an unpainted metal surface. 10 Be fo r e Yo u Be g in 13 Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by it edges or by its metal mounting bracket. Hold a component such as a microprocessor by its edges, not by its pins. Recommended Tools The procedures in this manual require the following tools: · · · · · #1 magnetized Phillips screwdriver Small flat-blade screwdriver Small plastic scribe Microprocessor extractor Flash BIOS update program diskette or CD (required only when upgrading the microprocessor or replacing the reserve battery) System Orientation back left right front B e fo re You Be gin 11 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Screw Identification When you are removing and replacing components, photocopy the placemat as a tool to lay out and keep track of the component screws. The placemat provides the number of screws and the sizes. Screw Identification NOTICE: When reinstalling a screw, you must use a screw of the correct diameter and length. Make sure that the screw is properly aligned with its corresponding hole, and avoid overtightening. Screw Placement Hard Drive Door Security: (1 each) Keyboard to Bottom Case Assembly: (5 each) 12 Be fo r e Yo u Be g in Screw Placement Display Assembly Bezel: (6 each) Display Assembly Hinge Bracket to Bottom Case Assembly: (5 each) Rubber Screw Covers (6 each) Display Assembly and Flex Cable Retention Bracket to Top Cover: (5 each) Display Assembly EMI Shield Bracket: (2 each) Palmrest to Bottom Case Assembly: (5 each) (3 each) Hybrid Cooling Fan: (2 each) (1 each) B e fo re You Be gin 13 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Screw Placement System Board to Bottom Case Assembly: (10 each) Display Panel to Support Bracket: (12.1-inch display panel only) (4 each) Display Assembly Latch: (2 each for 14.1-inch XGA display panels) 14 Be fo r e Yo u Be g in SECTION 2 Removing and R e p l a c i n g Pa r t s Components Hard Drive Memory Module Mini-PCI Card Assembly Keyboard Assembly Removing the Display Assembly Display Assembly Latch Hinge Covers Palmrest Assembly Microprocessor Thermal Cooling Assembly Hybrid Cooling Fan Microprocessor Module Reserve Battery Speaker Assemblies System Board Assembly Battery and Modular Bay Latch Assemblies w w w. d e l l . c o m | s u p p o r t . d e l l . c o m w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Components Exploded View display-assembly top cover keyboard palmrest assembly center control cover left speaker/antenna assembly thermal cooling assembly hybrid cooling fan hard drive system board right speaker/antenna assembly main battery modem and NIC connector covers fan guard modular bay device bottom case assembly memory module cover NOTICE: Only a certified service technician should perform repairs on your system. Damage due to servicing that is not authorized by Dell is not covered by your warranty. NOTICE: Unless otherwise noted, each procedure in this manual assumes that a part can be replaced by performing the removal procedure in reverse order. 16 Re m o vi n g a n d Re p l a c i n g Pa r ts Hard Drive NOTICE: The hard drive is very sensitive to shock. Handle the assembly by its edges (do not squeeze the top of the hard drive case), and avoid dropping it. Hard Drive bottom of computer M3 x 5-mm screw hard drive door Removing the Hard Drive NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 Remove the M3 x 5-mm screw from the hard drive door. Slide the drive door up until the drive assembly tabs disengage from the door slots in the bottom case assembly. Pull the hard drive straight out of the bottom case assembly. Replacing the Hard Drive 1 Gently push the hard drive into the drive bay until the drive door is flush with the computer case. Re m o v i n g a nd Rep l a ci n g Part s 17 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 2 3 Push down on the drive door until it snaps into place. Replace the M3 x 5-mm screw in the hard drive door. Memory Module Memory Module Cover Removing the Memory Module Cover NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 Remove the memory module cover: a b Use a coin or flat-blade screwdriver to release the two captive screws that secure the memory module cover. Place your finger under the cover at the indentation and lift and slide the cover open. 18 Re m o vi n g a n d Re p l a c i n g Pa r ts NOTE: The screw labeled with the "circle K" in the middle of the memory module cover secures the keyboard assembly and does not secure the memory module cover. Memory Modules JDIM 1 JDIM 2 inner tabs (2 per socket) memory module sockets (2) Removing the Memory Modules NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. Re m o v i n g a nd Rep l a ci n g Part s 19 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 Remove the memory module cover. To release a memory module from its socket, spread apart the inner tabs of the memory module socket just far enough for the memory module to disengage from the socket. The module should pop up slightly. Lift the memory module out of its socket. 3 Replacing the Memory Modules 1 If you only have one memory module, install it in the socket labeled "JDIM1." Install a second memory module in the socket labeled "JDIM2." NOTE: Memory modules are keyed, or designed to fit into their sockets, in only one direction. NOTICE: The memory module must be inserted at a 45-degree angle to avoid damaging the connector. 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. Pivot the memory module down until it clicks into place. If you do not hear a click, remove the memory module and reinstall it. Insert the tabs on the memory module cover into the bottom case assembly. Rotate the memory module cover down and tighten the two captive screws. 3 4 Mini-PCI Card Assembly You must remove the optional mini-PCI card assembly before the system board assembly can be removed. A mini-PCI card assembly may consist of a modem, a NIC, a modem and NIC combination, or a wireless NIC. A modem, NIC, or modem and NIC combination must be connected to the wiring harness as appropriate; a wireless NIC must be connected to the system's internal antenna. 20 Re m o vi n g a n d Re p l a c i n g Pa r ts Mini-PCI Card Assembly Using Interface Cables socket modem connector NIC connector Mini PCI Wireless NIC Assembly Using Antenna Cable connection to internal antenna mini-coax antenna cable Re m o v i n g a nd Rep l a ci n g Part s 21 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Mini-PCI Card Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 Remove the memory module cover. To release the mini-PCI card assembly from its socket, spread apart the metal securing tabs until the assembly pops up slightly. Lift the mini-PCI card assembly out of its socket and disconnect any attached cables. Replacing the Mini-PCI Card Assembly NOTICE: The mini-PCI card must be inserted at a 45-degree angle to avoid damaging the connector. NOTICE: The mini-PCI card is keyed, or designed to fit into its socket, in only one direction. Do not force the connection. 1 2 Align the mini-PCI card with the socket at a 45-degree angle, and press the mini-PCI card firmly into the socket. Depending on the type of mini-PCI card you are installing, either connect the interface cables to the mini-PCI card, or connect the mini-coax antenna cable from the mini-PCI card to the internal antenna. Lower the mini-PCI card until it snaps into the metal securing tabs. NOTE: If you are installing a wireless NIC, fold and tuck the unused interface cables into the slot so they do not interfere with the cover. NOTE: A modem-only mini-PCI card has one connector; place the unused NIC connector under the mini-PCI card. 3 4 Replace the memory module cover. 22 Re m o vi n g a n d Re p l a c i n g Pa r ts Keyboard Assembly Removing the Keyboard Screws M2.5 x 12-mm screws (5) Removing the Keyboard Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 Remove the hard drive. Turn the computer over, and remove the five M2.5 x 12-mm screws from the holes labeled "circle K." Turn the computer over and open the display. NOTICE: The key caps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the keyboard. Re m o v i n g a nd Rep l a ci n g Part s 23 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 4 To release the keyboard from the palmrest assembly, use a small, flatblade screwdriver or plastic scribe to pull up on the scalloped edge of the blank key on the keyboard. NOTE: Removing the center control cover provides more room to free the keyboard. Keyboard scalloped edge of blank key track stick keyboard palmrest 5 6 7 Lift the keyboard straight up until it clears the keyboard boss support in the bottom case assembly. Rotate the keyboard forward toward the front of the computer. Rest the key face of the keyboard on the palmrest. 24 Re m o vi n g a n d Re p l a c i n g Pa r ts Keyboard Connector keyboard flex cable track stick cable 8 Disconnect the keyboard flex cable from the interface connector on the system board assembly by pulling up on the connector. NOTICE: Do not pull on the keyboard flex cable. 9 Remove the keyboard assembly from the bottom case assembly. Replacing the Keyboard Assembly 1 Place the keyboard on the palmrest at the front of the computer with the keys face down and the connector toward the back of the computer. NOTICE: To avoid damage to the connector pins, press the keyboard connector evenly into the interface connector, and do not reverse the keyboard connector. 2 3 Connect the keyboard flex cable to the interface connector on the system board assembly. Carefully turn the keyboard over and fit the keyboard into place. Re m o v i n g a nd Rep l a ci n g Part s 25 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: Position the keyboard flex cable so it is not pinched when you replace the keyboard in the bottom case assembly. 4 5 Check that the keyboard is correctly installed. The keys should be flush with the left and right surfaces of the palmrest. Reinstall the five M2.5 x 12-mm screws in the holes labeled "circle K." Removing the Display Assembly NOTICE: You must remove the display assembly before you remove the palmrest assembly; the display assembly hinges pass through the back of the palmrest assembly. NOTE: Always remove and replace the display panel as a complete assembly. NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 26 Re m o vi n g a n d Re p l a c i n g Pa r ts Display Assembly display-assembly top cover (14.1-inch display assembly shown) M2 x 3-mm screws (2) center control cover EMI shield bracket LCD flex cable connector M2.5 x 5-mm screws (5) bottom case assembly 1 2 Remove the hard drive. Remove the center control cover. a b Use a scribe to lift the right edge of the center control cover and pry it loose from the bottom case assembly. Lift the center control cover up and away from the bottom case assembly. 3 Close the display. Re m o v i n g a nd Rep l a ci n g Part s 27 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 4 From the back of the computer, remove the five M2.5 x 5-mm screws labeled with the "circle D." There are two screws on the right hinge and three screws on the left hinge. Open the display assembly approximately 180 degrees and support the display assembly so it does not open past this position. Remove the two M2 x 3-mm screws that secure the EMI shield bracket to the system board assembly. Remove the flex cable EMI shield retention bracket that covers the display-feed flex cable connector on the system board. Pull straight up on the display-feed flex cable connector to disconnect the connector from the system board (see "Display Assembly"). Lift the display assembly from the bottom case assembly. NOTICE: When reconnecting the display-feed flex cable connector to the system board, push down on the top left and right ends of the connector (see "Reconnecting the Display-Feed Flex Cable Connector"). Pressing on the center of the connector may damage resistors and compromise EMI protection in the system. 5 6 7 8 9 R e c o n n e c t i n g t h e D i s p l a y - Fe e d F l e x C a b l e C o n n e c t o r 28 Re m o vi n g a n d Re p l a c i n g Pa r ts 14.1-Inch Display Assembly Bezel and Panel display assembly bezel rubber screw covers (6) M2.5 x 5-mm screws (6) display panel flex cable retention bracket display-feed flex cable display-assembly top cover M2 x 4-mm screws (5) Re m o v i n g a nd Rep l a ci n g Part s 29 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the 14.1-Inch Display Assembly Bezel NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 4 Remove the hard drive. Remove the display assembly. Use the scribe to pry the six rubber screw covers out of the screw holes located on the bezel on the front of the display assembly. Remove the six M2.5 x 5-mm screws located on the bezel on the front of the display assembly. NOTICE: To avoid damage to the bezel, do not bend the bezel while separating it from the display-assembly top cover. 5 Use a plastic scribe to carefully separate the bezel from the display-assembly top cover. Removing the 14.1-Inch Display Panel NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. 1 2 3 4 5 Remove the hard drive. Remove the display assembly. Remove the display assembly bezel. Remove the hinge covers. Remove the two M2 x 4-mm screws on the left side of the display panel and the two M2 x 4-mm screws on the right side of the display panel. NOTE: If you have a Hitachi display panel, remove the two M2 x 4-mm screws from the center of the left side of the display panel. 30 Re m o vi n g a n d Re p l a c i n g Pa r ts 6 Remove the M2 x 4-mm screw that secures the display-feed flex cable to the display assembly through the black plastic flex cable retention bracket (see "14.1-Inch Display Assembly Bezel and Panel"). Disconnect the bottom flex cable connector from the display-assembly top cover and inverter connector by pulling straight up on the attached pull tab. Lift and rotate the top of the display panel out of the display-assembly top cover. 7 8 Replacing the 14.1-Inch Display Panel 1 Place the bottom edge of the display panel in the bottom of the display-assembly top cover and elevate the top of the panel with your hand. Place the display panel in the display-assembly top cover. Reinstall the five M2 x 4-mm screws that secure the display panel to the display-assembly top cover. 2 3 Re m o v i n g a nd Rep l a ci n g Part s 31 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Display-Feed Flex Cable (14.1-Inch Display Panel) D i s p l a y - Fe e d F l e x C a b l e display panel connector top flex cable connector pull tab bottom flex cable connector inverter connector NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 4 5 Remove the hard drive. Remove the display assembly. Remove the display assembly bezel. Remove the tape that covers the display panel connector. Pull the top flex cable connector down and away to remove it from the display panel connector. 32 Re m o vi n g a n d Re p l a c i n g Pa r ts 12.1-Inch Display Assembly Bezel and Panel rubber screw covers (6) M2.5 x 5-mm screws (6) M3 x 3-mm screws (4) display assembly bezel display panel flex cable retention bracket display-feed flex cable display-assembly top cover support bracket M2 x 4-mm screws (5) Re m o v i n g a nd Rep l a ci n g Part s 33 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the 12.1-Inch Display Assembly Bezel NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 4 Remove the hard drive. Remove the display assembly. Use the scribe to pry the six rubber screw covers out of the screw holes located on the bezel on the front of the display assembly. Remove the six M2.5 x 5-mm screws located on the bezel on the front of the display assembly. NOTICE: To avoid damage to the bezel, do not bend the bezel while separating it from the display-assembly top cover. 5 Use a plastic scribe to carefully separate the bezel from the display-assembly top cover. Removing the 12.1-Inch Display Panel NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. 1 2 3 4 5 6 Remove the hard drive. Remove the display assembly. Remove the display assembly bezel. Remove the hinge covers. Remove the four M3 x 3-mm screws on the front of the display panel that secure the display panel to the support bracket. Remove the M2 x 4-mm screw that secures the display-feed flex cable to the display assembly through the black plastic flex cable retention bracket (see "12.1-Inch Display Assembly Bezel and Panel"). 34 Re m o vi n g a n d Re p l a c i n g Pa r ts 7 Lift up the right side of the display panel, and pull the panel out of the display-assembly top cover at an angle. Replacing the Display-Assembly Top Cover If you are replacing the display-assembly top cover, remove the support bracket. 1 Remove the two M2 x 4-mm screws on the left side of the display-assembly top cover and the two M2 x 4-mm screws on the right side of the display-assembly top cover. Lift the support bracket out of the display-assembly top cover. 2 Replacing the 12.1-Inch Display Panel 1 Place the left edge of the display panel against the left side of the support bracket in the display-assembly top cover, and elevate the right side of the panel with your hand. Lay the display panel into the display-assembly top cover. Reinstall the four M3 x 3-mm screws that secure the display panel to the support bracket. 2 3 Re m o v i n g a nd Rep l a ci n g Part s 35 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Display-Feed Flex Cable (12.1-Inch Display Panel) D i s p l a y - Fe e d F l e x C a b l e top flex cable connector bottom flex cable connector pull tab inverter connector display panel connector NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 3 4 Remove the hard drive. Remove the display assembly. Remove the display assembly bezel. Remove the four M3 x 3-mm screws that secure the display panel to the support bracket (see "12.1-Inch Display Assembly Bezel and Panel"). Lift the bottom of the display panel out of the display-assembly top cover. 5 36 Re m o vi n g a n d Re p l a c i n g Pa r ts 6 7 8 Disconnect the bottom flex cable connector from the inverter connector by pulling straight up on the attached pull tab. Remove the tape that covers the display panel connector. Pull the top flex cable connector down and away to remove it from the display panel connector. Display Assembly Latch NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. Display Assembly L atch for 14.1-Inch XG A Display Panels display assembly latch M2.5 x 5-mm screws (2) Removing the Display Assembly Latch 1 2 3 Remove the hard drive. Remove the display assembly. Remove the display assembly bezel. Re m o v i n g a nd Rep l a ci n g Part s 37 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 4 Remove the display assembly latch by removing the two M2.5 x 5-mm screws that secure it to the display-assembly top cover. Display Assembly L atch for 14.1-Inch SXGA+ and 12.1Inch Display Panels display assembly latch NOTICE: Do not remove the display assembly latch from 14.1-inch SXGA+ and 12.1-inch display panels. If the latch is damaged, replace the display-assembly top cover. 38 Re m o vi n g a n d Re p l a c i n g Pa r ts Hinge Covers Removing the Hinge Covers Removing the Hinge Cover s 1 2 3 Remove the display assembly. Rotate the hinges forward at an angle of approximately 90 degrees to the front of the display assembly. To remove the hinge covers, slide them off of the hinges. Re m o v i n g a nd Rep l a ci n g Part s 39 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Replacing the Hinge Covers Hinge Covers right hinge cover right hinge cover left hinge cover 1 Attach the display assembly to the bottom case assembly. 40 Re m o vi n g a n d Re p l a c i n g Pa r ts 2 Close the display assembly and snap the hinge covers in place over the hinges. NOTE: The right plastic hinge cover label includes an "R," and the left plastic hinge cover label includes an "L." The hinge cover labels face the back of the computer. Palmrest Assembly Removing the Palmr est Ass embly Scr ew s M2.5 x 12-mm screws (3) M2 x 3-mm screws (2) Removing the Palmrest Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. Re m o v i n g a nd Rep l a ci n g Part s 41 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 Remove the hard drive. Remove the keyboard. NOTICE: You must remove the display assembly before you remove the palmrest assembly; the display assembly hinges pass through the back of the palmrest assembly. 3 4 5 6 Remove the display hinge cover and display assembly. Turn the computer over and remove the three M2.5 x 12-mm screws that are labeled with a "circle P ." Remove the two M2 x 3-mm screws that are located in the hard drive bay labeled with a "circle P ." Turn the computer over, and remove the three M2 x 3-mm screws that secure the palmrest to the bottom case assembly. · Remove the two M2 x 3-mm screws that are located on the back edge of the bottom case assembly, underneath the display assembly. Remove the M2 x 3-mm screw located underneath the keyboard, on the right side of the bottom case assembly, next to the microprocessor thermal cooling assembly. · 7 Pull up on the pull tab that is attached to the palmrest flex cable connector to remove it from the touch pad connector on the system board assembly. 42 Re m o vi n g a n d Re p l a c i n g Pa r ts Palmrest Assembly palmrest assembly M2 x 3-mm screws (3) palmrest flex cable bottom case assembly touch pad connector 8 Using the plastic scribe along the edge of the plastic, remove the palmrest assembly from the bottom case assembly. Re m o v i n g a nd Rep l a ci n g Part s 43 w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Microprocessor Thermal Cooling Assembly Microprocessor Thermal Cooling Assembly captive screws (4) microprocessor thermal cooling assembly Removing the Microprocessor Thermal Cooling Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure. 1 2 Remove the hard drive. Remove the keyboard screws. 44 Re m o vi n g a n d Re p l a c i n g Pa r ts 3 4 5 Turn the computer over, lift the keyboard up, rotate it forward toward the front of the computer, and place it face down on the palmrest. Loosen the four captive screws securing the microprocessor thermal cooling assembly. Remove the microprocessor thermal cooling assembly from the system board assembly. NOTICE: When reattaching the microprocessor thermal cooling assembly, tighten the captive screws in consecutive order, from 1 to 4. Hybrid Cooling Fan H y b r i d C o o l i n g Fa n