Dell™ Latitude™ D520 Service Manual Before You Begin System Components Media Bay Hard Drive Memory Module(s) Modem Mini-Card Internal Card With Bluetooth ® Wireless Technology Hinge Cover Keyboard Display Assembly Palm Rest Coin-Cell Battery Speaker Assembly Base Latch Processor Thermal-Cooling Assembly Processor Module System Fan System Board Assembly Flashing the BIOS Pin Assignments for I/O Connectors Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better u
Back to Contents Page Before You Begin Dell™ Latitude™ D520 Service Manual Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Computer Orientation Screw Identification This section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist: l You have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer.
4. Disconnect your computer and all attached devices from their electrical outlets. 5. Close the display and turn the computer upside-down on a flat work surface. NOTICE: To help prevent damage to the system board, remove the main battery before working inside the computer. 6. 1 Remove the main battery: a. Slide the battery-bay latch release on the bottom of the computer. b. Remove the battery from the battery bay. battery-bay latch release 7. 2 main battery Turn the computer top-side up.
Media Bay Device: Hard Drive: Modem: (1 each) (2 each) (1 each) Keyboard: Display Assembly: (2 each) (4 each) Display Panel: (8 each) Display Latch: (1 each) Display Bezel: (6 each, under rubber display bumpers) Palm Rest: (14 each – bottom side) Palm Rest: Speakers: Fan: (4 each - top side) (1 each) (2 each) System Board: (2 each) Back to Contents Page
Back to Contents Page Internal Card With Bluetooth® Wireless Technology Dell™ Latitude™ D520 Service Manual Removing the Card Removing the Card CAUTION: Before performing the following procedures, read the safety instructions in your Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching a connector on the back panel of the computer.
Back to Contents Page Mini-Card Dell™ Latitude™ D520 Service Manual Wireless Local Area Network (WLAN) Cards CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To prevent damage to the system board, remove the main battery before you service the computer. Wireless Local Area Network (WLAN) Cards NOTE: If you ordered a WLAN card with your computer, the card is already installed. 1. Follow the procedures in Before You Begin. 2.
1 WLAN card c. 2 metal securing tabs (2) Slide the card at a 45-degree angle out of its connector. NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card. NOTE: Do not insert a Mobile Broadband (WWAN) network card into the WLAN card connector. NOTE: The WLAN card may have two or three antenna connectors, depending on the type of card you ordered. 5.
Back to Contents Page Coin-Cell Battery Dell™ Latitude™ D520 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in your Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching a connector on the back panel of the computer. NOTICE: To prevent damage to the system board, remove the main battery before you service the computer. 1 1.
Back to Contents Page System Components Dell™ Latitude™ D520 Service Manual NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty. NOTICE: Unless otherwise noted, each procedure in this document assumes that a part can be replaced by performing the removal procedure in reverse order.
Back to Contents Page Processor Module Dell™ Latitude™ D520 Service Manual Removing the Processor Module Replacing the Processor Module Removing the Processor Module CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. NOTICE: Do not touch the processor die.
NOTICE: A processor module that is not properly seated can result in an intermittent connection or permanent damage to the processor and ZIF socket. NOTE: If a new microprocessor is installed, you will receive one of the following: a new thermal-cooling assembly which will include an affixed thermal pad; or, you will receive a new thermal pad along with a tech sheet to illustrate proper installation. 1.
Back to Contents Page Processor Thermal-Cooling Assembly Dell™ Latitude™ D520 Service Manual Removing the Processor Thermal-Cooling Assembly Replacing the Processor Thermal-Cooling Assembly Removing the Processor Thermal-Cooling Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
2. Tighten the six captive screws, labeled "1" through "6," in consecutive order.
Back to Contents Page Display Assembly Dell™ Latitude™ D520 Service Manual Removing the Display Assembly Display Bezel Display Panel Display Latch Removing the Display Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
NOTICE: Ensure the antenna cables are not twisted and that they are lying flat in the antenna cable clip. 1. Replace the four M2.5 x 5-mm screws that secure the display to the computer base. 2. Connect the display cable to the system board. 3. Connect the three antenna cables. 4. Replace the keyboard. 5. Replace the hinge cover. Display Bezel Removing the Display Bezel CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
3. Replace the five rubber display bumpers around the display bezel. Display Panel Removing the Display Panel CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.
4 inverter connector Replacing the Display Panel 1. Reconnect the top display-cable connector to the top flex-cable connector. 2. Reconnect the bottom flex-cable connector to the inverter connector. 3. Replace the display panel inside the display back cover. NOTE: The eight screw locations are numbered. Replace the screws in sequential order. 4. Replace the eight M2 x 5-mm screws (four on each side) in sequential order around the display panel. 5. Replace the display bezel.
Replacing the Display Latch 1. Align the latch with the posts on the display back and set into place. 2. Replace the support bracket and replace the M2 x 4-mm screw.
Back to Contents Page System Fan Dell™ Latitude™ D520 Service Manual CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
Back to Contents Page Flashing the BIOS Dell™ Latitude™ D520 Service Manual NOTICE: Plug the AC adapter into a known good power source to prevent a loss of power. Failure to do so may cause system damage. 1. Ensure that the AC adapter is plugged in and that the main battery is installed properly. NOTE: If you use a BIOS update program CD to flash the BIOS, press before inserting the CD so that you can set up the computer to boot from a CD this one time only.
Back to Contents Page Hard Drive Dell™ Latitude™ D520 Service Manual Removing the Hard Drive Replacing the Hard Drive Returning a Hard Drive to Dell Removing the Hard Drive CAUTION: If you remove the hard drive from the computer when the drive is hot, do not touch the metal housing of the hard drive. CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To prevent data loss, turn off your computer before removing the hard drive.
Returning a Hard Drive to Dell Return your old hard drive to Dell in its original or comparable foam packaging. Otherwise, the hard drive may be damaged in transit.
Back to Contents Page Hinge Cover Dell™ Latitude™ D520 Service Manual CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. NOTICE: The hinge cover is fragile and can be damaged if extreme force is used. Be careful when removing the hinge cover. 1 1.
Back to Contents Page Keyboard Dell™ Latitude™ D520 Service Manual Removing the Keyboard Replacing the Keyboard CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as a connector on the back of the computer). Removing the Keyboard 1. Follow the procedures in Before You Begin.
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Back to Contents Page Base Latch Dell™ Latitude™ D520 Service Manual CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
Back to Contents Page Media Bay Dell™ Latitude™ D520 Service Manual NOTE: If the device security screw is not present, you can remove and install devices while the computer is running and connected to a docking device (docked). 1. Save and close any open files, exit any open programs, and shut down the computer. 2. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions. 3.
Back to Contents Page Memory Module(s) Dell™ Latitude™ D520 Service Manual Memory DIMM A DIMM B Memory You can increase your computer memory by installing memory modules on the system board. See the "Specifications" section in your User's Guide for information on the memory supported by your computer. Install only memory modules that are intended for your computer. NOTE: Memory modules purchased from Dell are covered under your computer warranty.
6. Ground yourself and install the new memory module: a. b. Align the notch in the module edge connector with the tab in the connector slot. Slide the module firmly into the slot at a 45-degree angle, and rotate the module down until it clicks into place. If you do not feel the click, remove the module and reinstall it. 7. Replace the keyboard (see Keyboard). 8. Replace the hinge cover (see Hinge Cover). 9.
NOTICE: If you need to install memory modules in two connectors, install a memory module in the connector labeled "DIMMA" before you install a module in the connector labeled "DIMMB." Insert memory modules at a 45-degree angle to prevent damage to the connector. NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message indicates this failure. 4. Ground yourself and install the new memory module: a. b. 5.
Back to Contents Page Modem Dell™ Latitude™ D520 Service Manual Removing the Modem Replacing the Modem Removing the Modem CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
5. Disconnect the modem cable from the modem. Replacing the Modem 1. Connect the modem cable to the modem. NOTICE: Ensure that the modem cable is routed correctly when you replace the modem. 2. Connect the modem to the system board. Align the connector on the bottom of the modem with the modem connector on the system board, and press down on the right side of the modem. 3. Replace the M2 x 3-mm screw.
Back to Contents Page Palm Rest Dell™ Latitude™ D520 Service Manual Removing the Palm Rest Replacing the Palm Rest Removing the Palm Rest CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
1 9. 1 M2.5 x 5-mm screws (4) Use the touch pad connector tab to disconnect the touch pad connector from the system board. touch pad connector 10. 2 tab Starting at the back center of the palm rest, use your fingers to separate the palm rest from the computer base by gently lifting up the palm rest while pressing down on the back of the computer base. Replacing the Palm Rest CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
Back to Contents Page Pin Assignments for I/O Connectors Dell™ Latitude™ D520 Service Manual USB Connector Video Connector S-Video TV-Out Connector IEEE 1394 Connector USB Connector Pin Signal 1 USB5V+ 2 USBP– 3 USBP+ 4 GND Video Connector Pin Signal Pin Signal 1 CRT_R 9 5V+ 2 CRT_G 10 GND 3 CRT_B 11 MONITOR_DETECT– 4 NC 12 DDC_DATA 5 GND 13 CRT_HS 6 GND 14 CRT_VS 7 GND 15 DDC_CLK 8 GND S-Video TV-Out Connector S-Video Pin Signal 1 GND
2 GND 3 DLUMA-L 4 DCRMA-L Composite Video Pin Signal 5 NC 6 DCMPS-L 7 GND IEEE 1394 Connector Pin Signal 1 TPB– 2 TPB+ 3 TPA– 4 TPA+ Back to Contents Page
Back to Contents Page Speaker Assembly Dell™ Latitude™ D520 Service Manual Removing the Speaker Assembly Replacing the Speaker Assembly Removing the Speaker Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
2. Replace the M2.5 x 5-mm screw that secures the speaker assembly in place.
Back to Contents Page System Board Assembly Dell™ Latitude™ D520 Service Manual Removing the System Board Assembly Replacing the System Board Assembly Removing the System Board Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
1 15. 1 16. M2.5 x 5-mm screws (2) Turn the computer upside down and remove the four M2 x 3-mm screws labeled "B" that secure the system board to the computer base. M2 x 3-mm screws labeled "B" (4) Remove the system board assembly: a. b. With the back of the computer facing you, grasp the upper-right corner of the system board assembly and lift it slightly; slowly easing the connectors out of their access holes on the back and side of the computer base.
Replacing the System Board Assembly 1. Perform all of the steps in Removing the System Board Assembly in reverse order. NOTICE: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 2. Turn on the computer. NOTE: If you use a BIOS update program CD to flash the BIOS, press before inserting the CD so that you can set up the computer to boot from a CD this one time only.
Back to Contents Page Dell™ Latitude™ D520 Service Manual 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 potential for property damage, personal injury, or death. Abbreviations and Acronyms For a complete list of abbreviations and acronyms, see "Glossary" in the User's Guide.
