Dell Precision™ M90 Mobile Workstation Service Manual Before You Begin Speakers System Components Subwoofer Optical Drive USB Port Board Hard Drive Processor Thermal-Cooling Assembly Memory Module(s) Processor Module Modem Video Card/Thermal-Cooling Assembly Mini-Card System Fan(s) Internal Card With Bluetooth® Wireless Technology ExpressCard Cage Hinge Cover Smart Card Reader Keyboard System Board Display Battery Latch Assembly Palm Rest Flashing the BIOS Coin-Cell Battery Pin As
Back to Contents Page Battery Latch Assembly Dell Precision™ M90 Mobile Workstation Service Manual Removing the Battery Latch Assembly Replacing the Battery Latch Assembly Removing the Battery Latch Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
1 screw 9. 2 battery latch assembly Remove the spring from the hook on the computer base by lifting it up and away with a screwdriver or a plastic scribe. 1 hook 10. 2 spring Remove the plastic battery-latch assembly by twisting the assembly slightly and lifting it out of the channel and away from the computer base. 1 battery latch assembly Replacing the Battery Latch Assembly 1. Insert the latch assembly into the channel on the computer base, and press it into place. 2.
5. Replace the system board and the four M2.5 x 5 screws. 6. Replace in reverse order the other components that you removed in Removing the Battery Latch Assembly.
Back to Contents Page Before You Begin Dell Precision™ M90 Mobile Workstation 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.
3. Disconnect any telephone or network cables from the 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. 1 6. Slide the battery-bay latch release on the bottom of the computer and remove the battery from the bay. 7. Turn the computer top-side up.
(1 each) (2 each) Internal Card With Bluetooth® Keyboard: Wireless Technology: (1 each) (1 each) Display Assembly: (2 each) (4 each) Display Bezel: Palm Rest: (4 each, under rubber display bumpers) (6 each – top side) Display Panel: (8 each) (4 each, shoulder type, under 2 screw covers and 2 rubber bumpers) (12 each – bottom side) Speakers: USB Port Board: Fans (2): (4 total — 2 per speaker) (1 each) (4 total — 2 per fan) System Board: Hard Drive Bay: (4 each)
Back to Contents Page Internal Card With Bluetooth® Wireless Technology Dell Precision™ M90 Mobile Workstation 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 ExpressCard Cage Dell Precision™ M90 Mobile Workstation 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 Mini-Card Dell Precision™ M90 Mobile Workstation Service Manual CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. CAUTION: Only products approved for use in your portable computer may be installed. 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 securing clips (2) 2 Mini-Card NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card. 5. Install the replacement Mini-Card: a. 1 Align the Mini-Card with the connector at a 45-degree angle, and press the Mini-Card down into the securing clips until the card clicks into place.
Back to Contents Page Coin-Cell Battery Dell Precision™ M90 Mobile Workstation Service Manual Removing the Coin-Cell Battery Replacing the Coin-Cell Battery Removing the Coin-Cell Battery 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.
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Back to Contents Page System Components Dell Precision™ M90 Mobile Workstation 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 Precision™ M90 Mobile Workstation 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.
Replacing the Processor Module NOTICE: Ensure that the cam lock is in the fully open position before seating the processor module. Seating the processor module properly in the ZIF socket does not require force. 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 with the pin-1 corner of the ZIF socket, and insert the processor module.
Back to Contents Page Processor Thermal-Cooling Assembly Dell Precision™ M90 Mobile Workstation 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.
3. Tighten the four captive screws, labeled "1" through "4," in consecutive order.
Back to Contents Page Display Dell Precision™ M90 Mobile Workstation Service Manual Display Assembly Display Bezel Display Panel Display Latch Display Assembly 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.
7. Remove the four M2.5 x 5-mm screws (two on each side) that connect the display to the computer base. 1 display cable pull-tab 2 M2.5 x 5-mm screws (4) 3 Mini-Card antenna cables (2) 4 display cable connector on system board 5 display cable in cable channel 1 Mini-Card antenna cables NOTE: When removing the display assembly, carefully unthread the Mini-Card antenna cables through the computer base and ensure that the plastic protectors—if present—remain on the individual cables. 8.
2. Align the display assembly over the screw holes in the base of the computer. NOTE: The left hinge assembly has a small tab that you must first insert underneath the edge of the palm rest. 1 tab 3. Replace the four M2.5 x 5-mm screws. 4. Connect the display cable to the system board. 5. Reroute the display cable into the cable channel. 6. Replace the hinge cover (see Replacing the Hinge Cover). 7. 8.
1 shoulder screws (4, two at the top and two at the bottom) 2 screw covers (2) 3 M2.5 x 5-mm screws (4, one on each corner) 4 rubber screw-covers/display bumpers (6) 5 display bezel Removing the Display Bezel CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
1 display back cover 7. 1 2 tabs Repeat step 6 for the lower-left corner of the bezel. Then use your fingers to release the snaps around the rest of the bezel and lift it away from the display panel. display bezel 2 display panel Replacing the Display Bezel 1. Starting at any corner, use your fingers to gently snap the bezel into place to secure it to the display panel. 2. Replace the four M2.5 x 5-mm screws on the corners of the bezel. 3.
1 display panel 2 M2 x 3-mm screws (8) 3 display back cover 4 grounding wire and captive screw 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. 1. Follow the instructions in Before Working Inside Your Computer. 2.
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. 4. Tighten the captive screw that attaches the display-panel ground wire to the display back cover. 5. Replace the eight M2 x 3-mm screws (four on each side) around the display panel. 6. Replace the display bezel (see Replacing the Display Bezel).
Back to Contents Page System Fan(s) Dell Precision™ M90 Mobile Workstation 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.
1 fan for video card/thermal - cooling assembly, if installed 2 M2.
Back to Contents Page Flashing the BIOS Dell Precision™ M90 Mobile Workstation 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 Precision™ M90 Mobile Workstation 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.
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 Precision™ M90 Mobile Workstation Service Manual Removing the Hinge Cover Replacing the Hinge Cover Removing the Hinge Cover 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 Keyboard Dell Precision™ M90 Mobile Workstation 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 Memory Module(s) Dell Precision™ M90 Mobile Workstation Service Manual Removing the Memory Module(s) Replacing the Memory Module(s) Removing the Memory Module(s) CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide. NOTICE: 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.
Replacing the Memory Module(s) NOTE: To get maximum performance/dual-channel memory bandwidth capability, both memory module connectors must contain memory modules and the modules must be of the same size and configuration. NOTE: If a memory module is not installed properly, the computer does not boot. 1. 2. Ground yourself and install the new memory module: a. Align the notch in the module edge connector with the tab in the connector slot. b.
Back to Contents Page Modem Dell Precision™ M90 Mobile Workstation 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.
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 Optical Drive Dell Precision™ M90 Mobile Workstation Service Manual Your computer ships with a fixed optical drive installed. NOTICE: To help prevent damage to drives, store them in a safe, dry place when they are not installed in the computer. Avoid pressing down on them or placing heavy objects on top of them. 1. Follow the instructions in Before Working Inside Your Computer. 2. Turn the computer upside-down and remove the M2.
Back to Contents Page Palm Rest Dell Precision™ M90 Mobile Workstation 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 M2.5 x 8-mm screws (12) 9. Turn the computer top-side up and disconnect the touch-pad connector from the system board. 1 touch-pad connector 2 LED board connector 10. Disconnect the LED board connector. 11. Lift the palm rest and remove it from the computer. Replacing the Palm Rest 1. Align the palm rest with the base and gently snap the palm rest into place. 2. Reconnect the touch-pad connector to the system board. 3. Reconnect the LED board connector to the system board.
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Back to Contents Page Pin Assignments for I/O Connectors Dell Precision™ M90 Mobile Workstation 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
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 Smart Card Reader Dell Precision™ M90 Mobile Workstation 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 Speakers Dell Precision™ M90 Mobile Workstation Service Manual Removing the Speakers Replacing the Speakers Removing the Speakers 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.
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Back to Contents Page Subwoofer Dell Precision™ M90 Mobile Workstation 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 System Board Dell Precision™ M90 Mobile Workstation Service Manual Removing the System Board Replacing the System Board Removing the System Board 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 USB-port-board connector 2 cable connector for internal card with Bluetooth wireless technology 3 speaker connector 4 subwoofer connector 12. Disconnect the smart-card reader connector from the system board. 13. Disconnect the speaker connector from the system board. 14. Disconnect the connector for the internal card with Bluetooth® wireless technology from the system board. 15. Disconnect the subwoofer connector from the system board. 16.
1 system board M2.5 x 5-mm screws (4) 23. 1 Remove the system board, slowly easing the connectors out of their access holes on the back and side of the computer base: a. With the back of the computer facing you, grasp the upper-right corner of the system board and lift it slightly. b.
Back to Contents Page Dell Precision™ M90 Mobile Workstation Service Manual 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. For a complete list of abbreviations and acronyms, see "Glossary" in the User's Guide.
Back to Contents Page USB Port Board Dell Precision™ M90 Mobile Workstation Service Manual Removing the USB Port Board Replacing the USB Port Board Removing the USB Port Board 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.
3. Reconnect the cable to the system board. 4. Replace the palm rest (see Replacing the Palm Rest). 5. Replace the display assembly (see Replacing the Display Assembly). 6. Replace the keyboard (see Keyboard). 7. Replace the hinge cover (see Replacing the Hinge Cover).
Back to Contents Page Video Card/Thermal-Cooling Assembly Dell Precision™ M90 Mobile Workstation Service Manual Removing the Video Card/Thermal-Cooling Assembly Replacing the Video Card/Thermal-Cooling Assembly Removing the Video Card/Thermal-Cooling Assembly CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.
2. Tighten the four captive screws on the video card/thermal-cooling assembly.
