Dell Precision M20, Service Manual

Page 1: ...s or their products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own Model PP11L January 2005 Rev A00 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 Palm Rest Fan Microprocessor T...

Page 2: ...ng a second battery if one is installed 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 CAUTION To prevent static damage to components inside your co...

Page 3: ...BIOS update program floppy or CD Computer Orientation Screw Identification When you are removing and replacing components print Screw Identification as a tool to lay out and keep track of the screws The placemat provides the number of screws and their sizes 1 back 2 right 3 front 4 left Optional Device 1 each Hard Drive 2 each Keyboard 2 each Display Assembly Display Bezel Display Panel ...

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

Page 5: ...tes the new BIOS When the flash update is complete the computer will automatically reboot 3 Press F2 during POST to enter the system setup program 4 Press Alt and F to reset the computer defaults 5 Press Esc Suspend select Save changes and reboot and press Enter to save configuration changes 6 Remove the flash BIOS update program floppy or CD from the drive and restart the computer Back to Content...

Page 6: ...of the plastic brackets Installing the Internal Card With Bluetooth Wireless Technology 1 Slide the card into the plastic brackets on the door and press the card onto the plastic knob 2 Connect the card to the card cable connector slide the door with the card into the card compartment and gently press the door into position 3 Replace the battery CAUTION Before performing the following procedures r...

Page 7: ...Back to Contents Page ...

Page 8: ...connector from the battery connector on the system board and slide the coin cell battery out of the securing sleeve 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...

Page 9: ...ll 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 connector 4 securing sleeve ...

Page 10: ...ourself 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 Press and hold the microprocessor down on the substrate on which the die is mounted while turning the cam screw to prevent intermittent contact between the cam screw and microprocessor NOTICE To avoid damage to the microprocess...

Page 11: ...edure 4 Update the BIOS using a flash BIOS update program CD For instructions on how to flash the BIOS see Flashing the BIOS Back to Contents Page 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 res...

Page 12: ...y cable from the display connector on the system board 7 Remove the four M2 5 x 5 mm screws 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...

Page 13: ...yboard 4 Remove the display assembly 5 Use a plastic scribe to pry the six display bumpers out of the screw holes located on the front of the bezel 6 Remove the six M2 5 x 5 mm screws located on the front of the bezel NOTE Ensure that you route the antenna cables under the routing clips Failure to do so could result in your keyboard not seating properly CAUTION Before you begin any of the procedur...

Page 14: ...he six display bumpers around the display assembly Display Panel 1 display bezel 2 display panel 3 display bumpers 6 4 M2 5 x 5 mm screws 6 NOTICE Carefully separate the bezel from the top cover to avoid damage to the bezel NOTE Follow the same procedure on all four sides of the display bezel until it snaps completely off CAUTION Before you begin any of the procedures in this section follow the sa...

Page 15: ...Remove the center control cover 3 Remove the keyboard 4 Remove the display assembly 5 Remove the display bezel 6 Remove the antenna cables from the routing clips on the side of the display panel 7 Remove the four M2 x 3 mm screws two on each side from the display panel 1 display panel 2 top cover ...

Page 16: ...nel 5 Replace the display bezel Display Latch Removing the Display Latch 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 6 Remove the M2 5 x 5 mm screw that secures the display latch to the top cover 3 M2 x 3 mm screws 4 1 top flex cable connector 6M871 flex cable top...

Page 17: ...isplay Latch 1 Align the latch on the guide pins located on the top cover 2 Replace the M2 5 x 5 mm screw that secures the display latch to the top cover Back to Contents Page 1 M2 5 x 5 mm screw 2 display latch 3 guide pins 2 4 top cover 8M669 ...

Page 18: ...he fan off the system board Installing the Fan 1 Connect the fan cable connector to the fan connector on the system board 2 Replace the two M2 5 x 8 mm screws on the fan and slide the fan back onto the system board 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 you...

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Page 20: ... Press the hard drive cover down until it is fully seated in the bay and tighten the screws 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 located in the Product Information Guide NOTICE To prevent data loss shut down your comp...

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: ...ide of the computer use a plastic scribe to gently pry up the center control cover 4 Installing the Center Control Cover Gently snap the center control cover into place starting from left to right Back to Contents Page 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...

Page 23: ...nector on the system board 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 NOTICE When you remove the keyboard pull up gently to a...

Page 24: ... keyboard into the base of the computer 3 Replace the two M2 5 x 5 mm screws across the top of the keyboard 4 Replace the center control cover Back to Contents Page NOTE You may need to slightly push the keyboard tabs into the base of the computer ...

Page 25: ... out of the computer base no screws secure it in place Installing the Base Latch 1 Slide the latch over the notch located in the center of the computer base 2 Replace the speaker assembly to secure the latch in place Back to Contents Page CAUTION Before you begin any of the procedures in this section follow the safety instructions located in the Product Information Guide NOTICE To avoid electrosta...

Page 26: ...CI card from the Mini PCI card connector at a 45 degree angle 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 NOTE If a Mini PCI c...

Page 27: ...abs 2 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 NOTICE Ensure the antenna cables are properly secured by the routing clips on the left side of the fan Failure to do so may cause damage to the antenna cables and the...

Page 28: ...3 Replace the keyboard 4 Replace the center control cover Back to Contents Page 1 Mini PCI card 2 antenna wires 2 ...

Page 29: ...palm rest 6 Disconnect the touch pad cable from the connector on the system board 7 Turn the computer over and remove the thirteen M2 5 x 8 mm screws 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 touchin...

Page 30: ... and snap into place 2 Connect the touch pad cable to the connector on the system board 3 Replace the three M2 5 x 5 mm screws on the top of the palm rest 4 Turn the computer over and replace the thirteen M2 5 x 8 mm screws 5 Replace the display assembly 6 Replace the keyboard 7 Replace the center control cover Back to Contents Page 1 M2 5 x 8 mm screws 13 NOTICE Carefully separate the palm rest f...

Page 31: ...ual USB Connector Video Connector Parallel Connector USB Connector Video Connector Parallel Connector Pin Signal 1 USB5V 2 USBP 3 USBP 4 GND 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 ...

Page 32: ...Back to Contents Page Pin Signal Pin Signal 1 STROBE 10 ACK 2 PD0 11 BUSY 3 PD1 12 PE 4 PD2 13 SLCT 5 PD3 14 AFD 3M 6 PD4 15 ERROR 7 PD5 16 INIT 8 PD6 17 SLIN 9 PD7 18 25 GND ...

Page 33: ...r base Installing the Speaker Assembly 1 Slide the speaker assembly over the notch located in the center of the computer base 2 Replace the two M2 5 x 5 mm screws one on each side on the speaker assembly 3 Reconnect the speaker cable to the speaker connector on the system board Back to Contents Page CAUTION Before you begin any of the procedures in this section follow the safety instructions locat...

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Page 35: ...croprocessor thermal cooling assembly 8 Remove the microprocessor 9 Remove the speaker assembly 10 Remove the internal card with Bluetooth wireless technology 11 Remove the four M2 x 3 mm screws that secure the PCMCIA card cage to the system board CAUTION Before you begin any of the procedures in this section follow the safety instructions located in the Product Information Guide NOTICE To avoid e...

Page 36: ... the CD that accompanied the replacement system board into the appropriate drive Follow the instructions that appear on the screen Back to Contents Page 1 M2 5 x 4 mm screws 4 2 PCMCIA card cage 1 M2 x 3 mm screws 5 1 system board assembly 2 computer base 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 ...

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Page 38: ...rized 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 1 display assembly 7 computer base 2 center control cover 8 primary battery 3 keyboard 9 coin cell battery 4 palm rest 10 modem 5 system board assembly 11 microprocessor thermal cooling assembly 6 optica...

Page 39: ...l cooling assembly away from the system board Installing the Microprocessor Thermal Cooling Assembly 1 Place the microprocessor thermal cooling assembly on the system board 2 Tighten the three captive screws labeled 1 through 3 in consecutive order CAUTION Before you begin any of the procedures in this section follow the safety instructions located in the Product Information Guide NOTICE To avoid ...

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Page 41: ...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 November 2004 Rev A00 Back to Contents Page NOTE A NOTE indicates im...

Page 42: ...nector 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 You can do so by touching an unpainted metal surface NOTE You can only use DDR2 memo...

Page 43: ...move the module from the connector 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 1 captive screw NOTICE To prevent damage to the memory module connector do not use tools to spread the inner metal tabs that secure the memory module NOTICE ...

Page 44: ...rk Inside the Computer 2 Turn the computer over and loosen the captive screw on the modem cover 3 Place your finger under the indentation and lift the cover open NOTE If the memory module is not installed properly the computer does not boot No error message indicates this failure NOTICE If the memory module cover is difficult to close remove the module and reinstall it Forcing the cover to close m...

Page 45: ...l your device in the module bay you can install the device security screw Removing the Device If the Security Screw Is Not Installed 1 Press the device latch release so that the latch release pops out 1 captive screw 1 M2 x 3 mm screw 2 modem NOTICE Do not disconnect the modem cable from the system board NOTICE Ensure that the modem cable is routed correctly when you replace the modem NOTICE Do no...

Page 46: ...splay and turn the computer over 3 Use a 1 Phillips screwdriver to remove the M2 x 3 mm screw from the bottom of the computer 4 Press the device latch release so that the latch release pops out 5 Pull the device by the latch release to remove the device from the module bay 1 device latch release NOTICE To prevent damage to devices place them in a safe dry place when they are not installed in the c...

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 ...