Dell Inspiron 14 N4120 Service Manual
Dell Inspiron 14 N4120 Manual
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Dell Inspiron 14 N4120 manual content summary:
- Dell Inspiron 14 N4120 | Service Manual - Page 1
Dell™ Inspiron™ N4110 Service Manual Regulatory model: P20G Regulatory type: P20G001 - Dell Inspiron 14 N4120 | Service Manual - Page 2
A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WARNING: A WARNING indicates a potential for property . © 2011 Dell Inc. All rights reserved. Trademarks used in this text: Dell™, the DELL logo, and Inspiron™ are trademarks of Dell Inc.; Microsoft®, - Dell Inspiron 14 N4120 | Service Manual - Page 3
Tools 9 Turning Off Your Computer 9 Before Working Inside Your Computer 10 2 Top Cover 13 Removing the Top Cover 13 Replacing the Top Cover 14 3 Battery 15 Removing the Battery 15 Replacing the Battery 16 4 Module Cover 17 Removing the Module Cover 17 Replacing the Module Cover 18 - Dell Inspiron 14 N4120 | Service Manual - Page 4
Replacing the Optical Drive 21 6 Memory Module(s 23 Removing the Memory Module(s 23 Replacing the Memory Module(s 24 7 Keyboard 27 Removing the Keyboard 27 Replacing the Keyboard 29 8 Palm-Rest Assembly 31 Removing the Palm-Rest Assembly 31 Replacing the Palm-Rest Assembly 34 9 Hot-Key - Dell Inspiron 14 N4120 | Service Manual - Page 5
11 Wireless Mini-Card(s 45 Removing the Mini-Card(s 45 Replacing the Mini-Card(s 47 12 Thermal Fan 49 Removing the Thermal Fan 49 Replacing the Thermal Fan 50 13 Display 53 Display Assembly 53 Removing the Display Assembly 53 Replacing the Display Assembly 56 Display Bezel 57 Removing - Dell Inspiron 14 N4120 | Service Manual - Page 6
the Display Brackets 62 Replacing the Display Brackets 63 14 Camera Module 65 Removing the Camera Module 65 Replacing the System Board 77 Replacing the System Board 81 Entering the Service Tag in the BIOS 82 18 Speakers 83 Removing the Speakers 83 Replacing the Speakers 84 - Dell Inspiron 14 N4120 | Service Manual - Page 7
19 Coin-Cell Battery 87 Removing the Coin-Cell Battery 87 Replacing the Coin-Cell Battery 88 20 Thermal Cooling Assembly 89 Removing the Thermal Cooling Assembly 89 Replacing the Thermal Cooling Assembly 90 21 Processor Module 91 Removing the Processor Module 91 Replacing the Processor - Dell Inspiron 14 N4120 | Service Manual - Page 8
Replacing the AC-Adapter Connector 102 25 Flashing the BIOS 105 8 Contents - Dell Inspiron 14 N4120 | Service Manual - Page 9
1 Before You Begin This manual provides procedures for removing and installing components in your -blade screwdriver • Phillips screwdriver • Plastic scribe • BIOS executable update program available at support.dell.com Turning Off Your Computer CAUTION: To avoid losing data, save and close all - Dell Inspiron 14 N4120 | Service Manual - Page 10
a component such as a processor by its edges, not by its pins. 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. CAUTION: When you disconnect a cable, pull on its connector or - Dell Inspiron 14 N4120 | Service Manual - Page 11
CAUTION: To help prevent damage to the system board, remove the main battery (see "Removing the Battery" on page 15) before working inside the computer. 7 Remove the battery (see "Removing the Battery" on page 15). 8 Turn the computer top-side up, open the display, and press the power button to - Dell Inspiron 14 N4120 | Service Manual - Page 12
12 Before You Begin - Dell Inspiron 14 N4120 | Service Manual - Page 13
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell working inside the computer. Removing the Top Cover 1 Follow the instructions in "Before You Begin" on page 9. 2 Press and hold - Dell Inspiron 14 N4120 | Service Manual - Page 14
1 2 1 top cover 2 release button Replacing the Top Cover 1 Follow the instructions in "Before You Begin" on page 9. NOTE: Ensure that the Dell logo is facing towards the back of the computer while replacing the top cover. . Failure to do so may result in damage to the computer. 14 Top Cover - Dell Inspiron 14 N4120 | Service Manual - Page 15
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell Dell computer. Do not use batteries designed for other Dell computers. Removing the Battery 1 Follow the instructions - Dell Inspiron 14 N4120 | Service Manual - Page 16
3 2 1 1 battery release latch 2 battery 3 battery lock latch Replacing the Battery 1 Follow the instructions in "Before You Begin" on page 9. 2 Slide the battery into the battery bay until it clicks into place. 3 Slide the battery lock latch to the lock position. 16 Battery - Dell Inspiron 14 N4120 | Service Manual - Page 17
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell working inside the computer. Removing the Module Cover 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 18
1 2 3 1 captive screw 2 module cover 3 tabs (2) Replacing the Module Cover 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the tabs on the module cover with the slots on the computer base and gently snap the cover - Dell Inspiron 14 N4120 | Service Manual - Page 19
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell working inside the computer. Removing the Optical Drive 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 20
2 1 1 optical-drive assembly 2 screw 6 Remove the two screws that secure the optical-drive bracket to the optical drive. 7 Pull the optical-drive bezel to detach it from the optical drive. 20 Optical Drive - Dell Inspiron 14 N4120 | Service Manual - Page 21
4 1 2 3 1 screws (2) 3 optical drive 2 optical-drive bracket 4 optical-drive bezel Replacing the Optical Drive 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the tabs on the optical-drive bezel with the slots on the optical drive and snap the optical- - Dell Inspiron 14 N4120 | Service Manual - Page 22
22 Optical Drive - Dell Inspiron 14 N4120 | Service Manual - Page 23
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell Setup Guide for information on the type of memory supported by your computer. NOTE: Memory modules purchased from Dell are - Dell Inspiron 14 N4120 | Service Manual - Page 24
two connectors, install a memory module in the connector labeled "DIMM A" before you install a memory module in the connector labeled "DIMM B." 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the notch in the memory module with the tab in the memory-module connector. 3 Slide the - Dell Inspiron 14 N4120 | Service Manual - Page 25
2 1 1 tab 2 notch 4 Replace the module cover (see "Replacing the Module Cover" on page 18). 5 Replace the battery (see "Replacing the Battery" on page 16), or connect the AC adapter to your computer and an electrical outlet. CAUTION: Before turning on the computer, replace all screws and ensure - Dell Inspiron 14 N4120 | Service Manual - Page 26
26 Memory - Dell Inspiron 14 N4120 | Service Manual - Page 27
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell working inside the computer. Removing the Keyboard 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 28
1 2 1 plastic scribe 2 keyboard CAUTION: Be extremely careful when removing and handling the keyboard. Failure to do so could result in scratching the display panel. 6 Ease the keyboard up until it clears off the palm rest. 7 Carefully turn the keyboard over and place it on the palm-rest assembly. - Dell Inspiron 14 N4120 | Service Manual - Page 29
1 2 1 keyboard cable 2 keyboard-cable connector Replacing the Keyboard 1 Follow the instructions in "Before You Begin" on page 9. 2 Slide the keyboard cable into the connector on the system board. Press down on the connector latch to secure - Dell Inspiron 14 N4120 | Service Manual - Page 30
6 Replace the battery (see "Replacing the Battery" on page 16). 30 Keyboard - Dell Inspiron 14 N4120 | Service Manual - Page 31
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell (see "Removing the Module Cover" on page 17). 4 Follow the instructions from step 4 to step 5 in "Removing the Optical Drive" on - Dell Inspiron 14 N4120 | Service Manual - Page 32
7 Remove the five screws on the palm-rest assembly. CAUTION: Pull on the plastic tab on top of the connectors to avoid damaging the connectors. 8 Lift the connector latches and pull the pull-tabs to disconnect the power-button cable, touch-pad cable, and hot-key board cable from the connectors on - Dell Inspiron 14 N4120 | Service Manual - Page 33
2 3 1 touch-pad cable 3 hot-key board cable 1 2 power-button cable Palm-Rest Assembly 33 - Dell Inspiron 14 N4120 | Service Manual - Page 34
CAUTION: Carefully separate the palm rest from the computer base to avoid damage to the palm rest. 9 Using a plastic scribe, carefully pry out the palm-rest assembly along the rear edge and then ease the palm-rest assembly from the computer base. 10 Lift the palm-rest assembly off the computer base. - Dell Inspiron 14 N4120 | Service Manual - Page 35
keyboard (see "Replacing the Keyboard" on page 29). 8 Turn the computer over and replace the ten screws at the bottom of the computer. 9 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 10 Replace the module cover (see "Replacing the Module Cover" on page 18 - Dell Inspiron 14 N4120 | Service Manual - Page 36
36 Palm-Rest Assembly - Dell Inspiron 14 N4120 | Service Manual - Page 37
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell (see "Removing the Module Cover" on page 17). 4 Follow the instructions from step 4 to step 5 in "Removing the Optical Drive" on - Dell Inspiron 14 N4120 | Service Manual - Page 38
palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 6 Replace the keyboard (see "Replacing the Keyboard" on page 29). 7 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 8 Replace the module cover (see "Replacing the Module Cover" on page - Dell Inspiron 14 N4120 | Service Manual - Page 39
CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Hot-Key Board 39 - Dell Inspiron 14 N4120 | Service Manual - Page 40
40 Hot-Key Board - Dell Inspiron 14 N4120 | Service Manual - Page 41
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell (see "Removing the Module Cover" on page 17). 4 Follow the instructions from step 4 to step 5 in "Removing the Optical Drive" on - Dell Inspiron 14 N4120 | Service Manual - Page 42
board 3 power-button board cable Replacing the Power Button Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the slots on the "Replacing the Keyboard" on page 29). 7 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 42 Power - Dell Inspiron 14 N4120 | Service Manual - Page 43
8 Replace the module cover (see "Replacing the Module Cover" on page 18). 9 Replace the battery (see "Removing the Battery" on page 15). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to - Dell Inspiron 14 N4120 | Service Manual - Page 44
44 Power Button Board - Dell Inspiron 14 N4120 | Service Manual - Page 45
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell computer. NOTE: Dell does not guarantee compatibility or provide support for Mini-Cards from sources other than Dell. If you - Dell Inspiron 14 N4120 | Service Manual - Page 46
4 Follow the instructions from step 4 to step 5 in "Removing the Optical Drive" on page 19. 5 Remove the keyboard (see "Removing the Keyboard" on page 27). 6 Remove the palm- - Dell Inspiron 14 N4120 | Service Manual - Page 47
more information, see "Protecting Against Electrostatic Discharge" in the safety information that shipped with your computer. Replacing the Mini-Card(s) 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the new Mini-Card from its packaging. CAUTION: Use firm and even pressure to - Dell Inspiron 14 N4120 | Service Manual - Page 48
antenna cable color scheme for the Mini-Cards supported by your computer. Connectors on the Mini- (see "Replacing the Keyboard" on page 29). 9 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" . 12 Install the drivers and utilities for your computer, as required. NOTE: - Dell Inspiron 14 N4120 | Service Manual - Page 49
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell working inside the computer. Removing the Thermal Fan 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 50
4 3 2 1 1 screw 2 thermal fan 3 thermal fan connector 4 display cable Replacing the Thermal Fan 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the thermal fan on the computer base and replace the screw. 3 Connect the thermal fan cable to the - Dell Inspiron 14 N4120 | Service Manual - Page 51
6 Replace the keyboard (see "Replacing the Keyboard" on page 29). 7 Replace the battery (see "Replacing the Battery" on page 16). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the - Dell Inspiron 14 N4120 | Service Manual - Page 52
52 Thermal Fan - Dell Inspiron 14 N4120 | Service Manual - Page 53
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell computer. Display Assembly Removing the Display Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 54
6 Remove the keyboard (see "Removing the Keyboard" on page 27). 7 Remove the palm-rest assembly (see "Removing the Palm-Rest Assembly" on page 31). 8 Loosen the display cable grounding screw. 9 Disconnect the display cable from the connector on the system board. 10 Disconnect the Mini-Card antenna - Dell Inspiron 14 N4120 | Service Manual - Page 55
1 2 3 1 display cable grounding screw 3 Mini-Card antenna cables (4) 2 display-cable connector 11 Remove the four screws that secure the display assembly to the computer base. 12 Lift the display assembly off the computer base. Display 55 - Dell Inspiron 14 N4120 | Service Manual - Page 56
Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the display assembly in position and replace the four screws that secure the display assembly to the computer base. 3 Route the display cable and Mini-Card antenna cables through the routing guides. 4 Connect the display - Dell Inspiron 14 N4120 | Service Manual - Page 57
page 35). 8 Replace the keyboard (see "Replacing the Keyboard" on page 29). 9 Replace the two screws at the bottom of the computer. 10 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 11 Replace the module cover (see "Replacing the Module Cover" on page 18 - Dell Inspiron 14 N4120 | Service Manual - Page 58
1 1 display bezel Replacing the Display Bezel 1 Follow the instructions in "Before You Begin" on page 9. 2 Realign the Replace the top cover (see "Replacing the Top Cover" on page 14). Display Panel Removing the Display Panel 1 Follow the instructions in "Before You Begin" on page 9. 58 Display - Dell Inspiron 14 N4120 | Service Manual - Page 59
Mini-Card(s) cables and remove the cables from the routing guides on the display cover. 6 Lift the display panel off the display cover. 1 2 3 1 display cover 2 display panel 3 screws (6) Replacing the Display Panel 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the screw holes - Dell Inspiron 14 N4120 | Service Manual - Page 60
remain inside the computer. Failure to do so may result in damage to the computer. Display Cable Removing the Display Cable 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the display assembly (see "Removing the Display Assembly" on page 53). 3 Remove the display bezel (see - Dell Inspiron 14 N4120 | Service Manual - Page 61
screws remain inside the computer. Failure to do so may result in damage to the computer. Hinge Caps Removing the Hinge Caps 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the display assembly (see "Removing the Display Assembly" on page 53). 3 Remove the display bezel (see - Dell Inspiron 14 N4120 | Service Manual - Page 62
remain inside the computer. Failure to do so may result in damage to the computer. Display Panel Brackets Removing the Display Panel Brackets 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the display assembly (see "Removing the Display Assembly" on page 53). 62 Display - Dell Inspiron 14 N4120 | Service Manual - Page 63
) that secure the display panel brackets to the display panel. 1 2 1 display panel brackets (2) 2 screws (4) Replacing the Display Panel Brackets 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the screw holes on the display panel vbbrackets with the screw holes on the display - Dell Inspiron 14 N4120 | Service Manual - Page 64
6 Replace the display assembly (see "Replacing the Display Assembly" on page 56). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 64 Display - Dell Inspiron 14 N4120 | Service Manual - Page 65
14 Camera Module WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. CAUTION: Only a certified service the instructions - Dell Inspiron 14 N4120 | Service Manual - Page 66
12 Remove the camera module. 4 12 3 1 tape 2 camera cable 3 camera module 4 plastic scribe Replacing the Camera Module 1 Follow the instructions in "Before You Begin" on page 9. 2 Connect the camera cable to the connector on the camera module. 3 Adhere the tape that secures the camera cable - Dell Inspiron 14 N4120 | Service Manual - Page 67
palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 8 Replace the keyboard (see "Replacing the Keyboard" on page 29). 9 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 10 Replace the module cover (see "Replacing the Module Cover" on page - Dell Inspiron 14 N4120 | Service Manual - Page 68
68 Camera Module - Dell Inspiron 14 N4120 | Service Manual - Page 69
due to servicing that is not authorized by Dell is not covered by your warranty. CAUTION: To help prevent damage to the system board, remove the main battery (see "Removing the Battery" on page 15) before working inside the computer. Removing the Hinge Cover 1 Follow the instructions in "Before - Dell Inspiron 14 N4120 | Service Manual - Page 70
9 Release the two tabs that secure the hinge cover to the computer base. 1 1 tabs (2) 10 Lift the hinge cover off the computer base. 70 Hinge Cover - Dell Inspiron 14 N4120 | Service Manual - Page 71
palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 6 Replace the keyboard (see "Replacing the Keyboard" on page 29). 7 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 8 Replace the module cover (see "Replacing the Module Cover" on page - Dell Inspiron 14 N4120 | Service Manual - Page 72
CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 72 Hinge Cover - Dell Inspiron 14 N4120 | Service Manual - Page 73
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell inside the computer. Removing the VGA Connector Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the - Dell Inspiron 14 N4120 | Service Manual - Page 74
1 2 1 screw 2 display cable Replacing the VGA Connector Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the connector on the VGA connector board with the slot on the computer base. 3 Connect the display cable - Dell Inspiron 14 N4120 | Service Manual - Page 75
9 Replace the battery (see "Replacing the Battery" on page 16). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. VGA Connector Board 75 - Dell Inspiron 14 N4120 | Service Manual - Page 76
76 VGA Connector Board - Dell Inspiron 14 N4120 | Service Manual - Page 77
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell touching pins and contacts. Removing the System Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Press and - Dell Inspiron 14 N4120 | Service Manual - Page 78
1 1 AC-adapter connector cable 8 Remove the keyboard (see "Removing the Keyboard" on page 27). 9 Remove the palm-rest assembly (see "Removing the Palm-Rest Assembly" on page 31). 10 Remove the thermal fan (see "Removing the Thermal Fan" on page 49). 11 Loosen the display cable grounding screw. 12 - Dell Inspiron 14 N4120 | Service Manual - Page 79
1 2 3 1 display cable connector 3 speakers cable connector 2 display cable grounding screw 14 Lift the system board assembly to disconnect the connector on the system board from the connector on the I/O board. System Board 79 - Dell Inspiron 14 N4120 | Service Manual - Page 80
board 15 Turn the system board over. 16 Remove the coin-cell battery (see "Removing the Coin-Cell Battery" on page 87). 17 Follow the instructions from step 3 to step 5 in "Removing the Hard-Drive Assembly" on page 95. 18 Remove the thermal cooling assembly (see "Removing the Thermal Cooling - Dell Inspiron 14 N4120 | Service Manual - Page 81
palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 14 Replace the keyboard (see "Replacing the Keyboard" on page 29). 15 Connect adapter connector cable to the connector on the system board. 16 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page - Dell Inspiron 14 N4120 | Service Manual - Page 82
in the BIOS" on page 82). Entering the Service Tag in the BIOS 1 Ensure that the AC adapter is plugged in and that the main battery is installed properly. 2 Turn on the computer. 3 Press as soon as you see the Dell logo to enter the system setup program. 4 Navigate to the - Dell Inspiron 14 N4120 | Service Manual - Page 83
Damage due to servicing that is not authorized by Dell is not covered by your warranty. CAUTION: To help prevent damage to the system board, remove the main battery (see "Removing the Battery" on page 15) before working inside the computer. Removing the Speakers 1 Follow the instructions in "Before - Dell Inspiron 14 N4120 | Service Manual - Page 84
2 1 1 speakers (2) 2 speakers cable Replacing the Speakers 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the speakers on the computer base and route the speakers cable through the routing guides. 3 Follow the instructions from step 7 to step 20 in "Replacing the System Board" on - Dell Inspiron 14 N4120 | Service Manual - Page 85
CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Speakers 85 - Dell Inspiron 14 N4120 | Service Manual - Page 86
86 Speakers - Dell Inspiron 14 N4120 | Service Manual - Page 87
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell Coin-Cell Battery 1 Follow the instructions in "Before You Begin" on page 9. 2 Follow the instructions from step 2 to step 15 - Dell Inspiron 14 N4120 | Service Manual - Page 88
-cell battery with the positive side up. 3 Slide the coin-cell battery into the slot and gently press until it snaps in place. 4 Follow the instructions from step 6 to step 20 in "Replacing the System Board" on page 81. CAUTION: Before turning on the computer, replace all screws and ensure that - Dell Inspiron 14 N4120 | Service Manual - Page 89
a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not ) before working inside the computer. Removing the Thermal Cooling Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the system board (see - Dell Inspiron 14 N4120 | Service Manual - Page 90
the processor or the heat sink is replaced, use the thermal pad provided in the kit to ensure that thermal conductivity is achieved. 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the thermal cooling assembly on the system board. 3 Align the seven captive screws on the thermal - Dell Inspiron 14 N4120 | Service Manual - Page 91
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell the Processor Module 1 Follow the instructions in "Before You Begin" on page 9. 2 Follow the instructions from step 2 to step 15 - Dell Inspiron 14 N4120 | Service Manual - Page 92
2 1 1 ZIF socket 2 ZIF-socket cam screw Replacing the Processor Module 1 Follow the instructions in "Before You Begin" on page 9. NOTE: If a new processor is installed, you will receive a new thermal-cooling assembly, which will include an affixed thermal - Dell Inspiron 14 N4120 | Service Manual - Page 93
the processor module to the system board. 4 Replace the thermal cooling assembly (see "Replacing the Thermal Cooling Assembly" on page 90). 5 Follow the instructions from step 6 to step 20 in "Replacing the System Board" on page 81. CAUTION: Before turning on the computer, replace all screws and - Dell Inspiron 14 N4120 | Service Manual - Page 94
94 Processor Module - Dell Inspiron 14 N4120 | Service Manual - Page 95
or provide support for hard drives from sources other than Dell. NOTE: If you are installing a hard drive from a source other than Dell, you need to install an operating system, drivers, and utilities on the new hard drive. Removing the Hard-Drive Assembly 1 Follow the instructions in "Before - Dell Inspiron 14 N4120 | Service Manual - Page 96
4 Slide the hard-drive assembly in the direction shown in the illustration to disconnect it from the connector on the system board. 5 Lift the hard-drive assembly off the system board. 2 1 1 hard-drive assembly 2 screw 6 Remove the four screws that secure the hard-drive bracket to the hard drive. 7 - Dell Inspiron 14 N4120 | Service Manual - Page 97
3 2 1 1 screws (4) 3 hard drive 2 hard-drive bracket Replacing the Hard-Drive Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the new hard drive from its packaging. Save the original packaging for storing or shipping the hard drive. 3 - Dell Inspiron 14 N4120 | Service Manual - Page 98
8 Follow the instructions from step 6 to step 20 in "Replacing the System Board" on page 81. CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 98 Hard-Drive Assembly - Dell Inspiron 14 N4120 | Service Manual - Page 99
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell 1 Follow the instructions in "Before You Begin" on page 9. 2 Follow the instructions from step 2 to step 14 in "Removing the - Dell Inspiron 14 N4120 | Service Manual - Page 100
assembly (see "Replacing the Display Assembly" on page 56). 6 Replace the Mini-Card(s) (see "Replacing the Mini-Card(s)" on page 47). 7 Follow the instructions from step 7 to step 20 in "Replacing the System Board" on page 81. CAUTION: Before turning on the computer, replace all screws and ensure - Dell Inspiron 14 N4120 | Service Manual - Page 101
dell.com/regulatory_compliance. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell instructions in "Before You Begin" on page 9. 2 Follow the instructions from step 2 to step 14 from the routing guides. 7 Remove - Dell Inspiron 14 N4120 | Service Manual - Page 102
computer base. 4 Route the AC-adapter connector cable through the routing guides. 5 Replace the VGA connector board (see "Replacing the VGA Connector assembly (see "Replacing the Display Assembly" on page 56). 8 Follow the instructions from step 7 to step 20 in "Replacing the System Board" on page - Dell Inspiron 14 N4120 | Service Manual - Page 103
AC-Adapter Connector 103 - Dell Inspiron 14 N4120 | Service Manual - Page 104
104 AC-Adapter Connector - Dell Inspiron 14 N4120 | Service Manual - Page 105
is available or when replacing the system board. To flash the BIOS: 1 Turn on the computer. 2 Go to support.dell.com/support/downloads. 3 Locate the BIOS update file for your computer: NOTE: The Service Tag for your computer is located on a label at the bottom of your computer. If you have your - Dell Inspiron 14 N4120 | Service Manual - Page 106
8 Double-click the file icon on the desktop and follow the instructions on the screen. 106 Flashing the BIOS
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Dell™ Inspiron™ N4110
Service Manual
Regulatory model: P20G
Regulatory type: P20G001