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Dell XPS 15 L502X Service Manual - Page 46

Replace the palm-rest assembly see Replacing the Palm-Rest Assembly - keyboard

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3 Slide the keyboard backlight cable into the system-board connector and press down on the connector latch to secure the cable. 4 Slide the tabs on the keyboard into the slots on the top cover and lower the keyboard into place. 5 Gently press the top of the keyboard to secure it to the tabs on the top cover. 6 Replace the palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 32). 7 Replace the battery (see "Replacing the Battery" on page 14). 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. 46 Keyboard

Section	Page
Dell™ XPS™ L502X Service Manual	1
Notes, Cautions, and Warnings	2
Contents	3
1	9
Before You Begin	9
Recommended Tools	9
Turning Off Your Computer	9
1 Save and close all open files and exit all open programs.	9
2 To shut down the operating system, click Start and then click Shut Down.	9
3 Ensure that the computer is turned off. If your computer did not automatically turn off when you shut down the operating system, press and hold the power button until the computer turns off.	9
Before Working Inside Your Computer	10
1 Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.	10
2 Turn off your computer (see \	10
3 Disconnect all telephone or network cables from the computer.	10
4 Press and eject any installed cards from the Media Card Reader.	10
5 Disconnect your computer and all attached devices from their electrical outlets.	10
6 Disconnect all attached devices from your computer.	11
7 Remove the battery (see \	11
8 Turn the computer top-side up, open the display, and press the power button to ground the system board.	11
2	13
Battery	13
Removing the Battery	13
1 Follow the instructions in \	13
2 Turn the computer over.	13
3 Slide the battery release latch to the side.	13
4 Lift the battery up at an angle and remove it from the battery bay.	13
Replacing the Battery	14
1 Follow the instructions in \	14
2 Align the tabs on the battery with the slots in the battery bay and press the battery down until it clicks into place.	14
3	15
Module Cover	15
Removing the Module Cover	15
1 Follow the instructions in \	15
2 Remove the battery (see \	15
3 Loosen the three captive screws that secure the module cover to the base cover.	15
4 Using your fingertips, release the tabs on the module cover from the slots on the base cover.	15
5 Lift the module cover off the base cover.	15
Replacing the Module Cover	16
1 Follow the instructions in \	16
2 Align the tabs on the module cover with the slots on the base cover and snap the module cover into place.	16
3 Tighten the three captive screws that secure the module cover to the base cover.	16
4 Replace the battery (see \	16
4	17
Memory Module(s)	17
Removing the Memory Module(s)	17
1 Follow the instructions in \	17
2 Remove the battery (see \	17
3 Remove the module cover (see \	17
4 Use your fingertips to carefully spread apart the securing clips on each end of the memory-module connector until the memory module pops up.	17
5 Remove the memory module from the memory-module connector.	18
Replacing the Memory Module(s)	18
1 Follow the instructions in \	18
2 Align the notch in the memory module with the tab in the memory-module connector.	18
3 Slide the memory module firmly into the memory-module connector at a 45-degree angle, and press the memory module down until it clicks into place. If you do not hear the click, remove the memory module and reinstall it.	19
4 Replace the module cover (see \	19
5 Replace the battery (see \	19
6 Connect the AC adapter to your computer and an electrical outlet.	19
7 Turn on the computer.	19
5	21
Wireless Mini-Card(s)	21
Removing the Mini-Card(s)	21
1 Follow the instructions in \	21
2 Remove the battery (see \	21
3 Remove the module cover (see \	21
4 Disconnect the antenna cables from the Mini-Card(s).	22
5 Remove the screw that secures the Mini-Card to the system board.	22
6 Lift the Mini-Card(s) out of the system-board connector.	22
Replacing the Mini-Card(s)	23
1 Follow the instructions in \	23
2 Remove the new Mini-Card from its packaging.	23
3 Insert the Mini-Card connector at a 45-degree angle into the system-board connector.	24
4 Press the other end of the Mini-Card down into the slot on the system board and replace the screw that secures the Mini-Card to the system board.	24
5 Connect the appropriate antenna cables to the Mini-Card you are installing. The following table provides the antenna cable color scheme for the Mini-Cards supported by your computer.	24
6 Replace the module cover (see \	24
7 Replace the battery (see \	24
8 Install the drivers and utilities for your computer, as required.	24
6	25
Optical Drive	25
Removing the Optical Drive	25
1 Follow the instructions in \	25
2 Remove the battery (see \	25
3 Remove the module cover (see \	25
4 Remove the memory module(s) (see \	25
5 Remove the screw that secures the optical drive to the base cover.	25
6 Using a plastic scribe, push the optical drive bracket to slide the optical drive out.	25
7 Slide the optical drive out of the optical-drive bay.	25
Replacing the Optical Drive	26
1 Follow the instructions in \	26
2 Remove the new optical drive from its packaging.	26
3 Slide the optical drive into the optical-drive bay until it is fully seated.	26
4 Replace the screw that secures the optical drive to the base cover.	26
5 Replace the memory module(s) (see \	26
6 Replace the module cover (see \	26
7 Replace the battery (see \	26
7	29
Palm-Rest Assembly	29
Removing the Palm-Rest Assembly	29
1 Follow the instructions in \	29
2 Remove the battery (see \	29
3 Remove the screw that secures the palm-rest assembly to the base cover.	29
4 Release and push the palm-rest assembly tabs off the base cover.	29
5 Turn the computer over and open the display as far as possible.	30
6 Using a plastic scribe, gently ease the palm-rest assembly from the top cover.	30
7 Without pulling hard on the palm-rest assembly, place it away from the display as shown in the following illustration.	31
8 Lift the connector latches and pull the pull-tabs to disconnect the touch- pad cable and the power button cable from their system-board connectors.	31
9 Lift the palm-rest assembly off the top cover.	31
Replacing the Palm-Rest Assembly	32
1 Follow the instructions in \	32
2 Slide the touch-pad cable and the power button cable into their system-board connectors and press down on the connector latches to secure the cables.	32
3 Align the tabs on the palm-rest assembly with the slots on the top cover and gently snap the palm-rest assembly into place.	32
4 Close the display and turn the computer over.	32
5 Replace the screw that secures the palm-rest assembly to the base cover.	32
6 Replace the battery (see \	32
8	35
Power-Button Board	35
Removing the Power-Button Board	35
1 Follow the instructions in \	35
2 Remove the battery (see \	35
3 Remove the palm-rest assembly (see \	35
4 Turn the palm-rest assembly over.	35
5 Lift the connector latch and pull the pull-tab to disconnect the power-button cable from the connector on the power-button board.	35
6 Remove the two screws that secure the power-button board to the palm-rest assembly.	35
7 Lift the power-button board off the palm-rest assembly.	35
Replacing the Power-Button Board	36
1 Follow the instructions in \	36
2 Place the power-button board on the palm-rest assembly and replace the two screws that secure the power-button board to the palm-rest assembly.	36
3 Slide the power-button cable into the connector on the power-button board and press down on the connector latch to secure the power-button cable.	36
4 Replace the palm-rest assembly (see \	36
5 Replace the battery (see \	36
9	37
Coin-Cell Battery	37
Removing the Coin-Cell Battery	37
1 Follow the instructions in \	37
2 Remove the battery (see \	37
3 Remove the palm-rest assembly (see \	37
4 Using a plastic scribe, gently pry the coin-cell battery out of the battery socket on the system board.	37
Replacing the Coin-Cell Battery	38
1 Follow the instructions in \	38
2 With the positive side facing up, snap the coin-cell battery into the battery socket on the system board.	38
3 Replace the palm-rest assembly (see \	38
4 Replace the battery (see \	38
10	39
Hard Drive	39
Removing the Hard Drive	39
1 Follow the instructions in \	39
2 Remove the battery (see \	39
3 Remove the palm-rest assembly (see \	39
4 Remove the four screws that secure the hard-drive assembly to the computer base.	40
5 Slide the hard-drive assembly to the side to disconnect it from the system board connector.	40
6 Lift the hard-drive assembly out of the hard-drive bay.	40
7 Remove the four screws that secure the hard-drive bracket to the hard drive.	40
8 Lift the hard-drive bracket off the hard drive.	40
Replacing the Hard Drive	41
1 Follow the instructions in \	41
2 Remove the new hard drive from its packaging.	41
3 Slide the hard drive into the hard-drive bracket.	41
4 Replace the four screws that secure the hard-drive bracket to the hard drive.	41
5 Place the hard-drive assembly in the hard-drive bay.	41
6 Slide the hard-drive assembly to connect it to the system board connector.	41
7 Replace the four screws that secure the hard-drive assembly to the computer base.	42
8 Replace the palm-rest assembly (see \	42
9 Replace the battery (see \	42
11	43
Keyboard	43
Removing the Keyboard	43
1 Follow the instructions in \	43
2 Remove the battery (see \	43
3 Remove the palm-rest assembly (see \	43
4 Push the tabs on the top cover to release the keyboard.	43
5 Carefully lift the keyboard and slide the keyboard tabs out of the slots on the top cover.	44
6 Lift the connector latch up and pull the pull-tab to disconnect the keyboard backlight cable from the system-board connector.	44
7 Turn the keyboard over and place it over the top cover as shown in the following illustration.	45
8 Lift the connector latch and disconnect the keyboard cable from the system-board connector.	45
9 Lift the keyboard off the top cover.	45
Replacing the Keyboard	45
1 Follow the instructions in \	45
2 Slide the keyboard cable into the system-board connector and press down on the connector latch to secure the cable.	45
3 Slide the keyboard backlight cable into the system-board connector and press down on the connector latch to secure the cable.	46
4 Slide the tabs on the keyboard into the slots on the top cover and lower the keyboard into place.	46
5 Gently press the top of the keyboard to secure it to the tabs on the top cover.	46
6 Replace the palm-rest assembly (see \	46
7 Replace the battery (see \	46
12	49
Display	49
Display Assembly	49
Removing the Display Assembly	49
1 Follow the instructions in \	49
2 Remove the battery (see \	49
3 Remove the module cover (see \	49
4 Remove the memory module(s) (see \	49
5 Disconnect the antenna cables from the Mini-Cards.	49
6 Note the routing of the Mini-Card antenna cables and remove them from the routing guides on base cover.	49
7 Remove the two screws that secure the display assembly to the base cover.	49
8 Remove the palm-rest assembly (see \	50
9 Turn the computer over and open the display as far as possible.	50
10 Remove the keyboard (see \	50
11 Pull the pull-tab to disconnect the display cable from the system-board connector.	50
12 Disconnect the digitizer board cable from the system-board connector.	50
13 Loosen the captive screw that secures the display grounding cable.	51
14 Note the routing of the display cable and remove the cable from the routing guides.	51
15 Note the routing of the Mini-Card antenna cables and remove them from the routing guides on the top cover.	51
16 Gently pull the antenna cables up from the bottom of the computer through the slot on the top cover.	51
17 Remove the four screws that secure the display assembly to the computer base.	51
18 Lift the display assembly off the computer base.	52
Replacing the Display Assembly	52
1 Follow the instructions in \	52
2 Place the display assembly in position and replace the four screws that secure the display assembly to the computer base.	52
3 Route the display cable through the routing guides and connect the display cable to the system-board connector.	52
4 Connect the digitizer board cable to the system-board connector.	52
5 Tighen the captive screw that secures the display grounding cable.	52
6 Route the antenna cables through the routing guides on the top cover.	53
7 Slide the antenna cables to the bottom of the computer through the slot on the top cover.	53
8 Replace the keyboard (see \	53
9 Replace the palm-rest assembly (see \	53
10 Close the display and turn the computer over.	53
11 Route the antenna cables through the routing guides on the base cover.	53
12 Connect the antenna cables to the connectors on the Mini-Card.	53
13 Replace the memory module(s) (see \	53
14 Replace the module cover (see \	53
15 Replace the battery (see \	53
Display Bezel	53
Removing the Display Bezel	53
1 Follow the instructions in \	53
2 Remove the display assembly (see \	53
3 Push the display bezel outwards to release it from the tabs that secure the display bezel to the back cover.	53
4 Using your fingertips, gently pry the outside edge of the display bezel off the back cover.	53
5 Lift the display bezel off the display assembly.	53
Replacing the Display Bezel	54
1 Follow the instructions in \	54
2 Align the display bezel with the display back cover, and gently snap it into place.	54
3 Replace the display assembly (see \	54
Display Panel	54
Removing the Display Panel	54
1 Follow the instructions in \	54
2 Remove the display assembly (see \	54
3 Remove the display bezel (see \	55
4 Disconnect the camera cable from the connector on the camera module.	55
5 Pull the pull-tab to disconnect the digitizer board cable from the connector on the digitizer board.	55
6 Remove the ten screws that secure the display panel to the display back cover.	55
7 Remove the two screws that secure the digitizer board to the display back cover.	55
8 Note the routing of the antenna cables and remove them from the routing guide on the right display hinge.	56
9 Note the routing of the display cable and remove it from the routing guide on the left display hinge.	56
10 Lift the display panel off the display back cover.	56
Replacing the Display Panel	57
1 Follow the instructions in \	57
2 Place the display panel over the display back cover.	57
3 Route the display cable through the routing guide on the left display hinge.	57
4 Route the antenna cables through the routing guide on the right display hinge.	57
5 Replace the ten screws that secure the display panel to the display back cover.	57
6 Replace the two screws that secure the digitizer board to the display back cover.	57
7 Connect the camera cable to the connector on the camera module.	57
8 Connect the digitizer board cable to the connector on the digitizer board.	57
9 Replace the display bezel (see \	57
10 Replace the display assembly (see \	57
Display Cable	57
Removing the Display Cable	57
1 Follow the instructions in \	57
2 Remove the display assembly (see \	57
3 Remove the display bezel (see \	57
4 Remove the display panel (see \	57
5 Turn the display panel over and place it on a clean surface.	57
6 Pull the pull-tab to disconnect the display cable from the connector on the display panel.	57
7 Gently peel off the display cable from the display panel.	58
Replacing the Display Cable	58
1 Follow the instructions in \	58
2 Adhere the display cable to the display panel.	58
3 Connect the display cable to the connector on the display panel.	58
4 Replace the display panel (see \	58
5 Replace the display bezel (see \	58
6 Replace the display assembly (\	58
Display-Panel Brackets	59
Removing the Display-Panel Brackets	59
1 Follow the instructions in \	59
2 Remove the display assembly (see \	59
3 Remove the display bezel (see \	59
4 Remove the display panel (see \	59
5 Remove the four screws (two on each side) that secure the display-panel brackets to the display panel.	59
6 Remove the display-panel brackets off the display panel.	59
Replacing the Display-Panel Brackets	60
1 Follow the instructions in \	60
2 Place the display-panel brackets in position.	60
3 Replace the four screws (two on each side) that secure the display-panel brackets to the display panel.	60
4 Replace the display panel (see \	60
5 Replace the display bezel (see \	60
6 Replace the display assembly (\	60
13	61
Camera Module	61
Removing the Camera Module	61
1 Follow the instructions in \	61
2 Remove the battery (see \	61
3 Remove the module cover (see \	61
4 Remove the memory module(s) (see \	61
5 Remove the palm-rest assembly (see \	61
6 Remove the keyboard (see \	61
7 Remove the display assembly (see \	61
8 Remove the display bezel (see \	61
9 Disconnect the camera cable from the connector on the camera module.	61
10 Gently pry the camera module off the aluminium foil.	62
Replacing the Camera Module	62
1 Follow the instructions in \	62
2 Adhere the camera module to the aluminium foil.	62
3 Use the alignment posts on the display back cover to place the camera module in position.	62
4 Connect the camera cable to the connector on the camera module.	62
5 Replace the display bezel (see \	62
6 Replace the display assembly (see \	62
7 Replace the keyboard (see \	62
8 Replace the palm-rest assembly (see \	63
9 Replace the memory module(s) (see \	63
10 Replace the module cover (see \	63
11 Replace the battery (see \	63
14	65
Top Cover	65
Removing the Top Cover	65
1 Follow the instructions in \	65
2 Press and eject any installed cards from the Media Card Reader.	65
3 Remove the battery (see \	65
4 Remove the module cover (see \	65
5 Remove the memory module(s) (see \	65
6 Remove the palm-rest assembly (see \	65
7 Remove the keyboard (see \	65
8 Remove the display assembly (see \	65
9 Remove the 17 screws that secure the top-cover assembly to the base cover.	65
10 Turn the computer over.	66
11 Disconnect the fan cable and subwoofer cable from the connectors on the system board.	66
12 Remove the nine screws that secure the top-cover assembly to the base cover.	66
13 Turn the computer over and use your fingertips to gently ease the top-cover assembly off the base cover.	67
14 Lift the top-cover assembly off the base cover.	67
15 Remove heat sink (see \	68
16 Remove the system board (see \	68
17 Remove the AC-adapter connector (see \	68
18 Remove the USB board (see \	68
19 Remove the TV tuner connector (see \	68
20 Remove the speakers (see \	68
Replacing the Top Cover	69
1 Follow the instructions in \	69
2 Replace the speakers (see \	69
3 Replace the TV tuner connector (see \	69
4 Replace the USB board (see \	69
5 Replace the AC-adapter connector (see \	69
6 Replace the system board (see \	69
7 Replace the heat sink (see \	69
8 Align the tabs on the top cover with the slots on the base cover and snap the top-cover assembly onto the base cover.	69
9 Replace the 17 screws that secure the top-cover assembly to the base cover.	69
10 Turn the computer over and replace the nine screws that secure the top-cover assembly to the base cover.	69
11 Connect the fan cable and subwoofer cable to the connectors on the system board.	69
12 Replace the display assembly (see \	69
13 Replace the keyboard (see \	69
14 Replace the palm-rest assembly (see \	69
15 Replace the memory module(s) (see \	69
16 Replace the module cover (see \	69
17 Replace any blank or card you removed from the Media Card Reader.	69
18 Replace the battery (see \	69
15	71
Fan	71
Removing the Fan	71
1 Follow the instructions in \	71
2 Press and eject any installed cards from the Media Card Reader.	71
3 Remove the battery (see \	71
4 Remove the module cover (see \	71
5 Remove the memory module(s) (see \	71
6 Remove the palm-rest assembly (see \	71
7 Remove the keyboard (see \	71
8 Remove the display assembly (see \	71
9 Follow the instructions from step 9 to step 14 in \	71
10 Remove the two screws that secure the fan to the base cover.	71
11 Lift the fan off the base cover.	72
Replacing the Fan	72
1 Follow the instructions in \	72
2 Place the fan on the base cover.	72
3 Replace the two screws that secure the fan to the base cover.	72
4 Follow the instructions from step 8 to step 11 in \	72
5 Replace the display assembly (see \	72
6 Replace the keyboard (see \	72
7 Replace the palm-rest assembly (see \	73
8 Replace the memory module(s) (see \	73
9 Replace the module cover (see \	73
10 Replace the battery (see \	73
16	75
Subwoofer	75
Removing the Subwoofer	75
1 Follow the instructions in \	75
2 Remove the battery (see \	75
3 Remove the module cover (see \	75
4 Remove the memory module(s) (see \	75
5 Remove the palm-rest assembly (see \	75
6 Remove the keyboard (see \	75
7 Remove the display assembly (see \	75
8 Follow the instructions from step 9 to step 14 in \	75
9 Remove the four screws that secure the subwoofer into the base cover.	75
10 Lift the subwoofer off the top cover.	76
Replacing the Subwoofer	76
1 Follow the instructions in \	76
2 Place the subwoofer on the base cover.	76
3 Replace the four screws that secure the subwoofer to the base cover.	76
4 Follow the instructions from step 8 to step 11 in \	76
5 Replace the display assembly (see \	76
6 Replace the keyboard (see \	76
7 Replace the palm-rest assembly (see \	77
8 Replace the memory module(s) (see \	77
9 Replace the module cover (see \	77
10 Replace the battery (see \	77
17	79
AC-Adapter Connector	79
Removing the AC-Adapter Connector	79
1 Follow the instructions in \	79
2 Remove the battery (see \	79
3 Remove the module cover (see \	79
4 Remove the memory module(s) (see \	79
5 Remove the palm-rest assembly (see \	79
6 Remove the keyboard (see \	79
7 Remove the display assembly (see \	79
8 Follow the instructions from step 9 to step 14 in \	79
9 Turn the top-cover assembly over.	79
10 Disconnect the AC-adapter connector cable from the connector on the system-board.	80
11 Make note of the AC-adapter connector cable routing and remove the cable from the routing guides.	80
12 Remove the screw that secures the AC-adapter connector to the top cover.	80
13 Lift the AC-adapter connector off the base cover.	80
Replacing the AC-Adapter Connector	80
1 Follow the instructions in \	80
2 Align the screw hole on the AC-adapter connector with the screw hole on the top cover.	80
3 Replace the screw that secures the AC-adapter connector to the top cover.	80
4 Route the AC-adapter connector cable through the routing guides.	81
5 Connect the AC-adapter connector cable to the system-board connector.	81
6 Follow the instructions from step 8 to step 11 in \	81
7 Replace the display assembly (see \	81
8 Replace the keyboard (see \	81
9 Replace the palm-rest assembly (see \	81
10 Replace the memory module(s) (see \	81
11 Replace the module cover (see \	81
12 Replace the battery (see \	81
18	83
USB Board	83
Removing the USB Board	83
1 Follow the instructions in \	83
2 Remove the battery (see \	83
3 Remove the module cover (see \	83
4 Remove the memory module(s) (see \	83
5 Remove the palm-rest assembly (see \	83
6 Remove the keyboard (see \	83
7 Remove the display assembly (see \	83
8 Follow the instructions from step 9 to step 14 in \	83
9 Remove the AC adapter connector (see \	83
10 Lift the connector latch and disconnect the USB-board cable from the connector on the USB board.	84
11 Remove the three screws that secure the USB board to the top cover.	84
12 Carefully ease the connectors on the USB board out of the slots on the top cover and lift the USB board off the top cover.	84
Replacing the USB Board	84
1 Follow the instructions in \	84
2 Align the connectors on the USB board with the slots on the top cover and place it on the top cover.	84
3 Replace the three screws that secure the USB board to the top cover.	84
4 Slide the USB-board cable into the connector on the USB board and press the connector latch down to secure the cable.	84
5 Replace the AC adapter connector (see \	85
6 Follow the instructions from step 8 to step 11 in \	85
7 Replace the display assembly (see \	85
8 Replace the keyboard (see \	85
9 Replace the palm-rest assembly (see \	85
10 Replace the memory module(s) (see \	85
11 Replace the module cover (see \	85
12 Replace the battery (see \	85
19	87
TV Tuner Connector	87
Removing the TV Tuner Connector	87
1 Follow the instructions in \	87
2 Remove the battery (see \	87
3 Remove the module cover (see \	87
4 Remove the memory module(s) (see \	87
5 Remove the palm-rest assembly (see \	87
6 Remove the keyboard (see \	87
7 Remove the display assembly (see \	87
8 Follow the instructions from step 9 to step 14 in \	87
9 Remove the AC adapter connector (see \	87
10 Make note of the TV tuner connector cable routing and remove the cable from the routing guides.	88
11 Remove the two screws that secure the TV tuner connector to the top cover.	88
12 Lift the TV tuner connector off the top cover.	88
Replacing the TV Tuner Connector	88
1 Follow the instructions in \	88
2 Align the screw holes on the TV tuner connector with the screw holes on the top cover.	88
3 Replace the two screws that secure the TV tuner connector to the top cover.	88
4 Route the TV tuner connector cable through the routing guides.	88
5 Replace the AC-adapter connector (see \	89
6 Follow the instructions from step 8 to step 11 in \	89
7 Replace the display assembly (see \	89
8 Replace the keyboard (see \	89
9 Replace the palm-rest assembly (see \	89
10 Replace the memory module(s) (see \	89
11 Replace the module cover (see \	89
12 Replace the battery (see \	89
20	91
Heat Sink	91
Removing the Heat Sink	91
1 Follow the instructions in \	91
2 Remove the battery (see \	91
3 Remove the module cover (see \	91
4 Remove the memory module(s) (see \	91
5 Remove the palm-rest assembly (see \	91
6 Remove the keyboard (see \	91
7 Remove the display assembly (see \	91
8 Follow the instructions from step 9 to step 14 in \	91
9 In sequential order (indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system board.	92
10 Carefully lift heat sink away from the top cover.	92
Replacing the Heat Sink	92