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Dell Precision M20 Service Manual

Dell precision m20 service manual.
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Dell Precision™ M20 Service Manual
Before You Begin
System Components
Hard Drive
Memory Module, Modem, and Devices
Coin-Cell Battery
Mini PCI Card
Internal Card With Bluetooth® Wireless Technology
Center Control Cover
Keyboard
Display Assembly and Display Latch
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.
© 2005 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of Dell Inc.; Intel is a registered trademark of Intel Corporation; Bluetooth is a registered
trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license.
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 Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
Model PP11L
January 2005     Rev. A00 
Palm Rest
Fan
Microprocessor Thermal-Cooling Assembly
Microprocessor Module
Speaker Assembly
Base Latch
System Board
Pin Assignments for I/O Connectors
Flashing the BIOS
 

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   Summary of Contents for Dell Precision M20

  • Page 1

    Bluetooth SIG, Inc. and is used by Dell Inc. under license. 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 Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 2: Before You Begin

    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. Read and follow applicable instructions in the safety instructions in the Product Information Guide that came with the computer.

  • Page 3: Recommended Tools

      12. Remove the hard drive.  Recommended Tools The procedures in this manual require the following tools:  #1 Phillips screwdriver  ¼-inch flat-blade screwdriver  Small plastic scribe  Flash BIOS update program floppy or CD  Computer Orientation back right front left  Screw Identification When you are removing and replacing components, print "Screw Identification"...

  • Page 4

    (4 each) (6 each) (4 each) Display Latch: Palm Rest: Fan: (1 each) (2 each at top) (2 each)   (13 each at bottom) Speakers: Modem: System Board: (2 each—1 on each side) (1 each) (5 each)   Back to Contents Page  ...

  • Page 5: Flashing The Bios

    Back to Contents Page   Flashing the BIOS Dell Precision™ M20 Service Manual   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, set up the computer to boot from a CD before inserting the CD.

  • Page 6

    Back to Contents Page   Internal Card With Bluetooth® Wireless Technology Dell Precision™ M20 Service Manual   Removing the Internal Card With Bluetooth® Wireless Technology   Installing the Internal Card With Bluetooth® Wireless Technology CAUTION: Before performing the following procedures, read the safety instructions in your Product Information Guide.

  • Page 7

    Back to Contents Page  ...

  • Page 8: Removing The Coin-cell Battery

    Back to Contents Page   Coin-Cell Battery Dell Precision™ M20 Service Manual   Removing the Coin-Cell Battery   Installing the Coin-Cell Battery CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 9

    connector 4 securing sleeve  Installing the Coin-Cell Battery   1. Connect the coin-cell battery cable connector to the battery connector on the system board.   2. Slide the battery into the securing sleeve.   3. Replace the modem cover. Back to Contents Page  ...

  • Page 10: Microprocessor Module

    Back to Contents Page   Microprocessor Module Dell Precision™ M20 Service Manual   Removing the Microprocessor Module   Installing the Microprocessor Module  Removing the Microprocessor Module CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 11

    NOTICE: Ensure that the cam lock is in the fully open position before seating the microprocessor module. Seating the microprocessor module properly in the ZIF socket does not require force. NOTICE: A microprocessor module that is not properly seated can result in an intermittent connection or permanent damage to the microprocessor and ZIF socket.

  • Page 12: Display Assembly

    Back to Contents Page   Display Assembly and Display Latch Dell Precision™ M20 Service Manual   Display Assembly   Display Bezel   Display Panel   Display Latch  Display Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 13: Installing The Display Assembly

      8. Lift the display assembly out of the computer base.   Installing the Display Assembly   1. Align the display assembly over the screw holes in the base of the computer.   2. Replace the four M2.5 x 5-mm screws.  ...

  • Page 14: Installing The Display Bezel

    NOTICE: Carefully separate the bezel from the top cover to avoid damage to the bezel.   7. Starting at the bottom of the display panel (by the Dell™ logo), use your fingers to separate the bezel from the top cover by lifting the inside edge of the  bezel and rotating away from the top cover. NOTE: Follow the same procedure on all four sides of the display bezel until it snaps completely off.

  • Page 15: Removing The Display Panel

    Removing the Display Panel   1. Follow the instructions in "Preparing to Work Inside the Computer."   2. Remove the center control cover.   3. Remove the keyboard.   4. Remove the display assembly.   5. Remove the display bezel.  ...

  • Page 16: Installing The Display Panel

    M2 x 3-mm screws (4)   8. Remove the display panel from the top cover.   9. Use the pull-tab to disconnect the bottom flex-cable connector from the inverter connector. 1 top flex-cable connector 6M871 (flex cable, top flex-cable connector, and pull-tab) 2 top display-cable connector  ...

  • Page 17: Installing The Display Latch

    7. Remove the display latch. M2.5 x 5-mm screw   display latch   guide pins (2)   top cover 8M669   Installing the Display Latch   1. Align the latch on the guide pins located on the top cover.   2.

  • Page 18: Removing The Fan

    Back to Contents Page   Fan Dell Precision™ M20 Service Manual   Removing the Fan   Installing the Fan CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 19

    Back to Contents Page  ...

  • Page 20: Hard Drive

    NOTICE: Hard drives are extremely fragile; even a slight bump can damage the drive. NOTE: Dell does not guarantee compatibility or provide support for hard drives from sources other than Dell.  Removing the Hard Drive   1. Follow the instructions in "Preparing to Work Inside the...

  • Page 21

      6. Install the operating system for your computer.   7. Install the drivers and utilities for your computer. Back to Contents Page  ...

  • Page 22: Center Control Cover

    Back to Contents Page   Center Control Cover Dell Precision™ M20 Service Manual   Removing the Center Control Cover   Installing the Center Control Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 23: Removing The Keyboard

    Back to Contents Page   Keyboard Dell Precision™ M20 Service Manual   Removing the Keyboard   Installing the Keyboard CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 24

    2. Slide the keyboard tabs at the bottom of the keyboard into the base of the computer. NOTE: You may need to slightly push the keyboard tabs into the base of the computer.   3. Replace the two M2.5 x 5-mm screws across the top of the keyboard.  ...

  • Page 25: Base Latch

    Back to Contents Page   Base Latch Dell Precision™ M20 Service Manual   Removing the Base Latch   Installing the Base Latch CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 26: Mini Pci Card

    Back to Contents Page   Mini PCI Card Dell Precision™ M20 Service Manual   Removing the Mini PCI Card   Installing the Mini PCI Card CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 27: Installing The Mini Pci Card

    1 Mini PCI card 2 metal securing tabs (2)  Installing the Mini PCI Card NOTICE: To avoid damaging the antenna cables or the Mini PCI card, never place the cables under the card. NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.  ...

  • Page 28

    Mini PCI card antenna wires (2)   3. Replace the keyboard.   4. Replace the center control cover.. Back to Contents Page  ...

  • Page 29: Palm Rest

    Back to Contents Page   Palm Rest Dell Precision™ M20 Service Manual   Removing the Palm Rest   Installing the Palm Rest CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 30: Installing The Palm Rest

    M2.5 x 8-mm screws (13)   NOTICE: Carefully separate the palm rest from the computer base to avoid damage to the palm rest.   8. Starting at the back center of the palm rest, use your fingers to separate the palm rest from the computer base by lifting the inside of the palm rest while pushing in on the outside.

  • Page 31: Usb Connector

    Back to Contents Page   Pin Assignments for I/O Connectors Dell Precision™ M20 Service Manual   USB Connector   Video Connector   Parallel Connector  USB Connector     Signal USB5V+ USBP– USBP+  Video Connector         Signal Signal CRT_R 9 CRT_G 10 CRT_B 11 MONITOR_DETECT–...

  • Page 32

            Signal Signal STROBE– 10 ACK– BUSY SLCT AFD/3M– ERROR– INIT– SLIN– 18-25 GND Back to Contents Page  ...

  • Page 33: Speaker Assembly

    Back to Contents Page   Speaker Assembly Dell Precision™ M20 Service Manual   Removing the Speaker Assembly   Installing the Speaker Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.

  • Page 34

     ...

  • Page 35: System Board

    Back to Contents Page   System Board Dell Precision™ M20 Service Manual   Removing the System Board   Installing the System Board  Removing the System Board CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 36: Installing The System Board

    M2.5 x 4-mm screws (4) PCMCIA card cage   12. Turn the computer over and remove the five M2 x 3-mm screws labeled "B" that secure the system board assembly to the computer base. M2 x 3-mm screws (5)    ...

  • Page 38: System Components

      System Components Dell Precision™ M20 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.

  • Page 39: Removing The Microprocessor Thermal-cooling Assembly

    Back to Contents Page   Microprocessor Thermal-Cooling Assembly Dell Precision™ M20 Service Manual   Removing the Microprocessor Thermal-Cooling Assembly   Installing the Microprocessor Thermal-Cooling Assembly  Removing the Microprocessor Thermal-Cooling Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

  • Page 40

    Back to Contents Page  ...

  • Page 41

    Bluetooth SIG, Inc. and is used by Dell Inc. under license. 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 Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 42: Memory Module

    You can only use DDR2 memory modules in your computer. NOTE: Memory modules purchased from Dell are covered under your computer warranty. Your computer has two user-accessible SODIMM sockets, one accessed from beneath the keyboard (DIMM A), and the other accessed from the bottom of the computer (DIMM B).

  • Page 43: Installing The Memory Module

    NOTICE: If you need to install memory modules in two connectors, install a memory module in the connector labeled "DIMM B" before you install a module in the connector labeled "DIMM A."   Removing the Memory Module From DIMM B  ...

  • Page 44: Removing The Modem

      1. Ground yourself and install the new memory module: a.  Align the notch in the module with the slot in the center of the connector. b.  Slide the edge of the module firmly into the connector, and rotate the module down until you feel a click. If you do not feel the click, remove the module and reinstall it.

  • Page 45: Installing The Modem

    captive screw   4. Remove the M2 x 3-mm screw that attaches the modem.   5. Pull up on the pull-tab to disconnect the modem from the connector on the system board. 1 M2 x 3-mm screw 2 modem NOTICE: Do not disconnect the modem cable from the system board.

  • Page 46

    device latch release   2. Pull the device by the latch release to remove the device from the module bay.   Removing the Device If the Security Screw Is Installed   1. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions. NOTICE: To prevent damage to devices, place them in a safe, dry place when they are not installed in the computer.

  • Page 47

      Installing the Device   1. Slide the device into the bay until it clicks in place.   2. Press the latch release back into position and replace the security screw if needed. Back to Contents Page  ...

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