Dell™ Latitude™ D820 Service Manual Before You Begin System Components Hard Drive Hinge Cover Memory Display Assembly Communications Cards Palm Rest Coin-Cell Battery Modem Internal Card with Bluetooth® Wireless Technology Processor Thermal-Cooling Assembly Keyboard Processor Module PC Card Reader System Board Battery Latch Base Fan Flashing the BIOS Pinout Assignments for I/O Connectors Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your comput
Back to Contents Page Base Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer. 2.
Back to Contents Page Battery Latch Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer. 2.
Back to Contents Page Before You Begin Dell™ Latitude™ D820 Service Manual Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Computer Orientation This chapter 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. Turn over the computer. NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. 6. 1 Remove the battery. a. Slide the battery-bay latch release on the bottom of the computer toward the back of the computer until the latch is engaged. b. Grasp the battery by the battery tab and slide the battery horizontally toward the side of the computer. c.
Back to Contents Page Internal Card with Bluetooth® Wireless Technology Dell™ Latitude™ D820 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.
Back to Contents Page Coin-Cell Battery Dell™ Latitude™ D820 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 avoid damaging the system board, you must remove the main battery before you begin working inside the computer. 1.
Back to Contents Page System Components Dell™ Latitude™ D820 Service Manual CAUTION: 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™ D820 Service Manual Removing the Processor Module Installing the Processor Module Removing the Processor Module CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
NOTICE: A processor module that is not properly seated can result in an intermittent connection or permanent damage to the processor and ZIF socket. 1. Align the pin-1 corner of the processor module so that it points to the triangle on the system board, and insert the processor module into the ZIF socket. When the processor module is correctly seated, all four corners are aligned at the same height. If one or more corners of the module are higher than the others, the module is not seated correctly.
Back to Contents Page Processor Thermal-Cooling Assembly Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer.
Back to Contents Page Display Assembly Dell™ Latitude™ D820 Service Manual Removing the Display Assembly Removing the Display Bezel Removing the Display Panel Installing the Display Panel Removing the Display Panel Brackets Removing the Display Latch Removing the Display Assembly CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide.
1 M2.5 x 8-mm screws labeled "D" (2) 10. 1 From the back of the computer, remove the two M2.5 x 8-mm screws. M2.5 x 8-mm screws (2) 11. Turn the computer top-side up and open the display. 12. Lift the display assembly out of the computer base. Removing the Display Bezel CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide.
5. Starting from the sides of the display panel, use your fingers to separate the bezel from the top cover and lift the bezel away from the top cover. Removing the Display Panel CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
1 display panel 6. 2 display-panel side bracket 3 screws (4) Remove the four screws from the left display-panel side bracket and lift away the bracket. Removing the Display Latch CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
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Back to Contents Page Fan Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer. 2.
Back to Contents Page Flashing the BIOS Dell™ Latitude™ D820 Service Manual Flashing the BIOS From a CD Flashing the BIOS From the Hard Drive If a BIOS-update program CD is provided with the new system board, flash the BIOS from the CD. If you do not have a BIOS-update program CD, flash the BIOS from the hard drive. Flashing the BIOS From a CD 1. Ensure that the AC adapter is plugged in and that the main battery is installed properly.
Back to Contents Page Hard Drive Dell™ Latitude™ D820 Service Manual 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 any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent data loss, turn off your computer before removing the hard drive.
6. Slide the new hard drive into the bay and into the connector until it is fully seated. 7. Replace the two hard drive screws.
Back to Contents Page Hinge Cover Dell™ Latitude™ D820 Service Manual 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). NOTICE: The hinge cover is fragile and can be damaged if extreme force is used.
Back to Contents Page Keyboard Dell™ Latitude™ D820 Service Manual CAUTION: Before working inside your Dell™ computer, follow the safety instructions in your Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the procedures in Before You Begin. 2. Remove the hinge cover (see Hinge Cover).
Back to Contents Page Memory Dell™ Latitude™ D820 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: If your computer has only one memory module, install the memory module in the connector labeled "DIMM A." NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell.
8. Replace the hinge cover (Hinge Cover). 9. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet. 10. Turn on the computer. As the computer boots, it detects the additional memory and automatically updates the system configuration information. To confirm the amount of memory installed in the computer, click Start® Control Panel® System. To install a memory module in DIMM B: 1. Follow the procedures in Before You Begin. 2.
5. Replace the memory module cover and tighten the screw. NOTICE: If the cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may damage your computer. 6. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet. 7. Turn on the computer. As the computer boots, it detects the additional memory and automatically updates the system configuration information.
Back to Contents Page Communications Cards Dell™ Latitude™ D820 Service Manual Wireless Cards Subscriber Identity Module (SIM) Card Wireless Cards If you ordered a wireless LAN or WAN card with your computer, the card is already installed. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid damaging the system board, you must remove the main battery before you begin working inside the computer.
1 WLAN card c. 2 metal securing tabs (2) Lift the card 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 network card into the WLAN card slot. NOTE: The WLAN card may have two or three connectors, depending on the type of card you ordered. 6. Install the card: NOTICE: To avoid damaging the WLAN card, never place cables on top of or under the card. a.
1 antenna cables b. 1 Release the card by spreading the metal securing tabs until the card pops up slightly. Mobile Broadband card c. 2 metal securing tabs (2) Lift the card out of its connector. NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card. 6. Install the card: NOTICE: To avoid damaging the Mobile Broadband card, never place cables on top of or under the card. a.
1 SIM card Back to Contents Page
Back to Contents Page Modem Dell™ Latitude™ D820 Service Manual CAUTION: Before you begin the following procedure, see the safety instructions in the Product Information Guide. NOTICE: To avoid damaging the system board, you must remove the main battery before you begin working inside the computer (see Before You Begin). CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Back to Contents Page Palm Rest Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer. 2.
NOTICE: When replacing the palmrest, ensure the internal card with Bluetooth wireless technology cable is properly placed on top of the palmrest to avoid damaging the cable.
Back to Contents Page PC Card Reader Dell™ Latitude™ D820 Service Manual CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface. 1. Follow the instructions in Before Working Inside Your Computer. 2.
Back to Contents Page Pinout Assignments for I/O Connectors USB Connector Video 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 Back to Contents Page
Back to Contents Page System Board Dell™ Latitude™ D820 Service Manual Removing the System Board Installing the System Board Removing the System Board CAUTION: Before performing the following procedures, follow the safety instructions in the Product Information Guide. CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface.
15. Lift the system board out and away from the base. Installing the System Board 1. Perform all the steps in Removing the System Board in reverse order. NOTE: When installing the system board, ensure that you align the wireless switch on the base with the switch on the system board. 1 wireless switch 2. Insert the battery into the battery bay. 3. Connect the AC adapter to the computer and to an electrical outlet.
Back to Contents Page Dell™ Latitude™ D820 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. Information in this document is subject to change without notice. © 2006 Dell Inc. All rights reserved.