Dell Inspiron 7746 Service Manual Download | Manualshive

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38

| Removing

the

USB

Board

Removing the USB Board

WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before Working Inside
Your Computer" on page 7. After working inside your computer, follow the
instructions in "After Working Inside Your Computer" on page 9. For more
safety best practices, see the Regulatory Compliance home page at

dell.com/regulatory_compliance.

Prerequisites

1

Remove the battery. See "Removing the Battery" on page 10.

2

Follow the instructions from step 1 to step 3 in "Removing the Optical Drive" on
page 16.

3

Follow the instructions from step 1 to step 3 in "Removing the Hard Drive" on
page 19.

4

Remove the keyboard. See "Removing the Keyboard" on page 22.

5

Remove the base cover. See "Removing the Base Cover" on page 26.

Procedure

1

Remove the screw that secures the USB board to the computer base.

2

Turn the USB board over.

book.book Page 38 Wednesday, November 26, 2014 4:00 PM

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Summary of Contents for Inspiron 7746

Page 1: ...Inspiron 17 7000 Series Service Manual Computer model Inspiron 7746 Regulatory model P24E Regulatory type P24E002 ...

Page 2: ... WARNING indicates a potential for property damage personal injury or death ____________________ Copyright 2014 Dell Inc All rights reserved This product is protected by U S and international copyright and intellectual property laws Dell and the Dell logo are trademarks of Dell Inc in the United States and or other jurisdictions All other marks and names mentioned herein may be trademarks of their...

Page 3: ...re 10 Replacing the Battery 12 Procedure 12 Removing the Memory Module s 13 Prerequisites 13 Procedure 13 Replacing the Memory Module s 15 Procedure 15 Removing the Optical Drive 16 Prerequisites 16 Procedure 16 Replacing the Optical Drive 18 Procedure 18 Postrequisites 18 Removing the Hard Drive 19 Prerequisites 19 Procedure 19 Replacing the Hard Drive 21 Procedure 21 Postrequisites 21 ...

Page 4: ...Procedure 29 Postrequisites 29 Removing the Coin Cell Battery 30 Prerequisites 30 Procedure 30 Replacing the Coin Cell Battery 31 Procedure 31 Postrequisites 31 Removing the Wireless Card 32 Prerequisites 32 Procedure 32 Replacing the Wireless Card 34 Procedure 34 Postrequisites 34 Removing the Cooling Assembly 35 Prerequisites 35 Procedure 35 Replacing the Cooling Assembly 37 Procedure 37 Postreq...

Page 5: ...isites 43 Removing the System Board 44 Prerequisites 44 Procedure 45 Replacing the System Board 48 Procedure 48 Postrequisites 49 Entering the Service Tag in the BIOS 49 Removing the Display Assembly 50 Prerequisites 50 Procedure 50 Replacing the Display Assembly 53 Procedure 53 Postrequisites 53 Removing the Power Adapter Port 54 Prerequisites 54 Procedure 55 Replacing the Power Adapter Port 56 P...

Page 6: ...Removing the Palm Rest 57 Prerequisites 57 Procedure 58 Replacing the Palm Rest 59 Procedure 59 Postrequisites 59 Flashing the BIOS 60 Getting Help and Contacting Dell 61 Self Help Resources 61 Contacting Dell 61 ...

Page 7: ...ngs Power Shut down Windows 7 Click or tap Start Shut down NOTE If you are using a different operating system see the documentation of your operating system for shut down instructions 3 Disconnect your computer and all attached devices from their electrical outlets 4 Disconnect all cables such as telephone cables network cables and so on from your computer 5 Disconnect all attached devices and per...

Page 8: ...rk surface is flat and clean CAUTION To disconnect a network cable first unplug the cable from your computer and then unplug the cable from the network device CAUTION When you disconnect a cable pull on its connector or on its pull tab not on the cable itself Some cables have connectors with locking tabs or thumb screws that you must disengage before disconnecting the cable When disconnecting cabl...

Page 9: ... all screws and make sure that no stray screws remain inside your computer 2 Connect any external devices peripherals and cables you removed before working on your computer 3 Replace any media cards discs and any other part s that you removed before working on your computer 4 Connect your computer and all attached devices to their electrical outlets 5 Turn on your computer ...

Page 10: ...Working Inside Your Computer on page 9 For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Close the display and turn the computer over 2 Remove the screw that secures the battery cover to the computer base 3 Loosen the captive screw that secures the battery cover to the computer base 4 Pry out the battery cover from the computer bas...

Page 11: ...Removing the Battery 11 5 Remove the screws that secure the battery to the computer base 6 Using the pull tab lift the battery out of the computer base 1 screws 2 2 pull tab 3 battery 1 2 3 ...

Page 12: ...e safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Align the screw holes on the battery with the screw holes on the computer base and place the battery on the computer base 2 Replace the screws that secure the battery to the computer base 3 Align the screw holes on the battery cover with the screw holes on the computer base 4 Tighten the c...

Page 13: ...ing Inside Your Computer on page 7 After working inside your computer follow the instructions in After Working Inside Your Computer on page 9 For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery See Removing the Battery on page 10 Procedure 1 Pry the memory module cover off the computer base 1 memory module cover ...

Page 14: ...dule s 2 Carefully spread apart the securing clips on each end of the memory module slot until the memory module pops up 3 Remove the memory module from the computer 1 memory module slot 2 securing clips 2 3 memory module 2 1 3 ...

Page 15: ...st practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Align the notch on the memory module with the tab on the memory module slot 2 Slide the memory module into the memory module slot at an angle and press the memory module down until it clicks into place NOTE If you do not hear the click remove the memory module and re install it 3 Replace the memory m...

Page 16: ...g Inside Your Computer on page 7 After working inside your computer follow the instructions in After Working Inside Your Computer on page 9 For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery See Removing the Battery on page 10 Procedure 1 Pry the memory module cover off the computer base 1 memory module cover 1 ...

Page 17: ...embly out of the optical drive bay 4 Remove the screw that secures the optical drive bracket to the optical drive and remove the optical drive bracket 5 Carefully pull the optical drive bezel and remove it from the optical drive 1 optical drive assembly 2 screw 3 plastic scribe 1 screw 2 optical drive bracket 3 optical drive 4 optical drive bezel 1 3 2 4 1 2 3 ...

Page 18: ...tices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Connect the optical drive bezel to the optical drive 2 Align the screw hole on the optical drive bracket with the screw hole on the optical drive 3 Replace the screw that secures the optical drive bracket to the optical drive 4 Slide the optical drive assembly into the optical drive bay 5 Replace the screw ...

Page 19: ... home page at dell com regulatory_compliance CAUTION To avoid data loss do not remove the hard drive while the computer is in Sleep or On state CAUTION Hard drives are extremely fragile Exercise care when handling the hard drive Prerequisites Remove the battery See Removing the Battery on page 10 Procedure 1 Remove the screws that secure the hard drive assembly to the computer base 2 Using the pul...

Page 20: ... Hard Drive 4 Remove the screws that secure the hard drive cage to the hard drive assembly 5 Using the pull tab lift the hard drive cage off the hard drive 1 pull tab 2 hard drive cage 3 hard drive 4 screws 4 1 2 4 3 ...

Page 21: ...me page at dell com regulatory_compliance CAUTION Hard drives are extremely fragile Exercise care when handling the hard drive Procedure 1 Align the screw holes on the hard drive cage with the screw holes on the hard drive 2 Replace the screws that secure the hard drive cage to the hard drive 3 Connect the hard drive cable to the hard drive assembly 4 Place the hard drive assembly on the computer ...

Page 22: ...age 7 After working inside your computer follow the instructions in After Working Inside Your Computer on page 9 For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery See Removing the Battery on page 10 Procedure 1 Remove the screw which secures the keyboard to the computer base 2 Turn the computer over 1 screw 2 c...

Page 23: ...Removing the Keyboard 23 3 Using a plastic scribe gently release the keyboard from the tabs on the palm rest assembly 1 tabs 5 2 plastic scribe 3 palm rest 4 keyboard 1 2 3 4 ...

Page 24: ...rest 5 Lift the latch and disconnect the keyboard cable from the system board 6 Lift the latch and disconnect the keyboard backlight cable from the system board 7 Lift the keyboard off the palm rest 1 keyboard cable 2 latches 2 3 keyboard backlight cable 4 palm rest 5 keyboard 1 2 3 4 5 ...

Page 25: ...t dell com regulatory_compliance Procedure 1 Slide the keyboard backlight cable into the keyboard backlight cable slot and press down the latch to secure the cable 2 Slide the keyboard cable into the keyboard cable slot and press down on the latch to secure the cable 3 Slide the tabs on the keyboard into the slots on the palm rest and snap the keyboard on the palm rest 4 Replace the screws that se...

Page 26: ... instructions in After Working Inside Your Computer on page 9 For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Driv...

Page 27: ...Removing the Base Cover 27 Procedure 1 Remove the screws that secure the base cover to the computer base 2 Close the display and turn the computer over 1 screws 2 1 1 2 ...

Page 28: ... Removing the Base Cover 3 Remove the screws that secure the base cover to the computer base 4 Pry the base cover away from the computer base 1 screws 8 2 base cover 1 base cover 2 plastic scribe 2 1 1 2 ...

Page 29: ...ance Procedure 1 Place the base cover on the computer base and snap it in place 2 Replace the screws that secure the base cover to the computer base 3 Turn the computer over and replace the screws that secure the base cover to the computer base Postrequisites 1 Replace the keyboard See Replacing the Keyboard on page 25 2 Follow the instructions from step 3 to step 5 in Replacing the Hard Drive on ...

Page 30: ...the coin cell battery resets the BIOS settings to default It is recommended that you note the BIOS settings before removing the coin cell battery Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 4 Remove...

Page 31: ... The battery may explode if installed incorrectly Replace the battery only with the same or equivalent type Discard used batteries according to the manufacturer s instructions Procedure With the positive side facing up snap the coin cell battery into the battery socket on the system board Postrequisites 1 Replace the base cover Replacing the Base Cover on page 29 2 Replace the keyboard See Replaci...

Page 32: ...actices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 4 Remove the keyboard See Removing the Keyboard on page 22 5 Remove the ...

Page 33: ...Removing the Wireless Card 33 3 Slide and remove the wireless card from the mini card connector 1 antenna cables 2 2 wireless mini card 3 wireless mini card slot 4 tab 2 1 3 4 2 4 1 3 ...

Page 34: ...the tab on the mini card slot 2 Insert the wireless card at an angle into the mini card slot 3 Press the other end of the wireless card down to secure it in the tab 4 Connect the antenna cables to the wireless card The following table provides the antenna cable color schemes for the wireless card supported by your computer Postrequisites 1 Replace the base cover See Replacing the Base Cover on pag...

Page 35: ... at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 4 Remove the keyboard See Removing the Keyboard on page 22 5 Remove the base cover See Removing the Base Cover on page ...

Page 36: ...from the system board 4 In sequential order indicated on the cooling assembly loosen the captive screws that secure the cooling assembly to the system board 5 Lift the cooling assembly off the system board 1 captive screws 6 2 cooling assembly 3 fan cable 3 2 1 ...

Page 37: ...ith the screw holes on the system board 2 In sequential order indicated on the cooling assembly tighten the captive screws that secure the cooling assembly to the system board 3 Connect the fan cable to the system board 4 Connect the display cable to the system board 5 Route the display cable through its routing guide on the fan Postrequisites 1 Replace the base cover See Replacing the Base Cover ...

Page 38: ...ractices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 4 Remove the keyboard See Removing the Keyboard on page 22 5 Remove the...

Page 39: ...ng the USB Board 39 3 Lift the connector latch and disconnect the USB board cable from the USB board 4 Lift the USB board off the computer base 1 screw 2 USB board 3 connector latch 4 USB board cable 3 4 1 2 ...

Page 40: ...iance Procedure 1 Connect the USB board cable to the USB board and press down the latch to secure the cable 2 Using the alignment posts on the computer base place the USB board in position 3 Replace the screw that secures the USB board to the computer base Postrequisites 1 Replace the base cover See Replacing the Base Cover on page 29 2 Replace the keyboard See Replacing the Keyboard on page 25 3 ...

Page 41: ...e Regulatory Compliance Homepage at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 3 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 4 Remove the base cover See Removing the Base Cover on page 26 5 Remove the keyboard Se...

Page 42: ...eel off the tape that secures the speaker cable to the system board 5 Peel off the tape that secures the speaker to the computer base 6 Lift the speakers along with the speaker cable off the computer base 1 speaker cable 2 tape 3 tab 4 speakers 2 5 tape 6 routing guides 1 4 2 5 6 3 ...

Page 43: ...n the computer base place the speakers in position 2 Adhere the tape that secures the speaker to the computer base 3 Route the speaker cable through the routing guides on the computer base 4 Connect the speaker cable to the system board 5 Adhere the tape that secures the speaker to the system board Postrequisites 1 Replace the base cover See Replacing the Base Cover on page 29 2 Replace the keyboa...

Page 44: ...the system board NOTE Before disconnecting the cables from the system board note the location of the connectors so that you can reconnect them correctly after you replace the system board Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Remove the memory modules See Removing the Memory Module s on page 13 3 Follow the instructions from step 1 to step 3 in Removing the Optic...

Page 45: ...age to the bottom part of the laptop 1 Turn the computer over and open the display 2 Lift the latch and disconnect the status light cable 3 Lift the latch and disconnect the touchpad cable 4 Lift the latch and disconnect the power button cable 1 power button cable 2 status light cable 3 touchpad cable 3 2 1 ...

Page 46: ...le from the system board 9 Disconnect the power adapter port cable from the system board 10 Disconnect the camera cable from the system board 11 Remove the screw that secures the system board to the computer base 12 Lift the system board at 45 degree angle and release the system board ports from the slots on the computer base 1 camera cable 2 power adapter port cable 3 speaker cable 4 latch 5 USB ...

Page 47: ...Removing the System Board 47 13 Lift the system board off the computer base 1 screw 2 system board 1 2 ...

Page 48: ...d Procedure 1 Ease the ports on the system board into the slots on the computer base and place the system board in the computer base 2 Align the screw hole on the system board to the screw hole on the computer base 3 Replace the screw that secures the system board to the computer base 4 Connect the camera cable to the system board 5 Connect the power adapter port cable to the system board 6 Connec...

Page 49: ...he instructions from step 3 to step 5 in Replacing the Hard Drive on page 21 6 Follow the instructions from step 4 to step 6 in Replacing the Optical Drive on page 18 7 Replace the memory modules See Replacing the Memory Module s on page 15 8 Replace the battery See Replacing the Battery on page 12 Entering the Service Tag in the BIOS 1 Turn on or restart your computer 2 Press F2 when the DELL log...

Page 50: ...ory modules See Removing the Memory Module s on page 13 3 Remove the keyboard See Removing the Keyboard on page 22 4 Remove the base cover See Removing the Base Cover on page 26 5 Follow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 6 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 7 Remove the wireless minicard See Removing the...

Page 51: ...e with the palm rest on the table so that the display assembly extends past the table edge with the display hinges facing up 4 Remove the screws that secure the display hinges to the palm rest assembly 1 palm rest assembly 2 screws 4 3 display hinges 2 4 display assembly 4 3 2 1 ...

Page 52: ...52 Removing the Display Assembly 5 Lift the palm rest away from the display assembly 1 display assembly 1 ...

Page 53: ...ges close the palm rest assembly 3 Replace the screws that secure the display hinges to the palm rest assembly 4 Route the camera and antenna cables through the routing guides on the palm rest assembly Postrequisites 1 Replace the system board See Replacing the System Board on page 48 2 Replace the cooling assembly See Replacing the Cooling Assembly on page 37 3 Replace the wireless minicard assem...

Page 54: ...nce home page at dell com regulatory_compliance Prerequisites 1 Remove the battery See Removing the Battery on page 10 2 Remove the optical drive assembly See Removing the Optical Drive on page 16 3 Remove the hard drive assembly See Removing the Hard Drive on page 19 4 Remove the base cover See Removing the Base Cover on page 26 5 Remove the keyboard See Removing the Keyboard on page 22 6 Remove ...

Page 55: ...ort cable from the routing guides on the computer base 2 Remove the screw that secures the power adapter port to the base 3 Lift the power adapter port along with its cable off the computer base 1 routing guides 2 screw 3 power adapter port 4 power adapter port cable 2 1 4 3 ...

Page 56: ... screw that secures the power adapter port to the computer base 3 Route the power adapter port cable through the routing guides on the computer base Postrequisites 1 Replace the display assembly See Replacing the Display Assembly on page 53 2 Replace the system board See Replacing the System Board on page 48 3 Replace the wireless mini card See Replacing the Wireless Card on page 34 4 Replace the ...

Page 57: ...ollow the instructions from step 1 to step 3 in Removing the Optical Drive on page 16 4 Follow the instructions from step 1 to step 3 in Removing the Hard Drive on page 19 5 Remove the keyboard See Removing the Keyboard on page 22 6 Remove the base cover See Removing the Base Cover on page 26 7 Remove the wireless card See Removing the Wireless Card on page 32 8 Remove the USB board See Removing t...

Page 58: ...ure 1 Note the hard drive cable routing and remove the hard drive cable from the routing guides along the palm rest 2 Peel off the USB board cable from the palm rest 1 palm rest 2 USB board cable 3 hard drive cable 1 palm rest 1 2 3 1 ...

Page 59: ...e Replacing the Power Adapter Port on page 56 2 Replace the system board See Replacing the System Board on page 48 3 Replace the display assembly See Replacing the Display Assembly on page 53 4 Replace the speakers See Replacing the Speakers on page 43 5 Replace the cooling assembly See Replacing the Cooling Assembly on page 37 6 Replace the USB board See Replacing the USB Board on page 40 7 Repla...

Page 60: ...ur computer s service tag NOTE If the Service Tag cannot be detected automatically select your product under the product categories 4 Click Drivers and Downloads 5 In the Operating System drop down select the operating system installed on your computer 6 Click BIOS 7 Click Download File to download the latest version of the BIOS for your computer 8 On the next page select Single file download and ...

Page 61: ...ll or Dell product catalog Self Help Information Self Help Options Accessing Windows Help Windows 8 1 Open the Search charm type Help and Support in the search box and press Enter Windows 7 Click Start Help and Support Information about Dell products and services See dell com Troubleshooting information user manuals setup instructions product specifications technical help blogs drivers software up...

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