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Display

Dell™ Inspiron™ 9400 Service Manual

  Display Assembly

  Display Bezel

  Display Panel

  Display Latch

Display Assembly

Removing the Display Assembly

CAUTION: Before you begin the following procedure, see the safety instructions 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: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer.

1. Follow the instructions in Before Working Inside Your Computer.
   
   
2. Turn the computer upside down and loosen the two captive screws on the Mini-Card cover.
   
   

NOTE: You must detach the Mini-Card antennas (see step 3) before you can remove the display assembly. If a Mini-Card is installed, disconnect the antenna cables from the card. If one is not installed, detach the antenna cables from their secured location.

3. Disconnect the antenna cables from the Mini-Card, if applicable.
   
   

1	antenna cables

4. Turn the computer top-side up.
   
   
5. Remove the hinge cover (see Removing the Hinge Cover).
   
   
6. Use the pull-tab to disconnect the display cable from the system board, and then disengage the display cable from the cable channel.
   
   
7. Remove the four M2.5 x 5-mm screws (two on each side) that connect the display to the computer base.
   
   

1

display cable in cable channel

2

display cable pull-tab

3

M2.5 x 5-mm screws (4)

1	Mini-Card antenna cables

NOTICE: When removing the display assembly, carefully unthread the Mini-Card antenna cables through the computer base.

8. Lift the display assembly away from the computer.
   
   

Replacing the Display Assembly

1. Thread the Mini-Card antenna cables back through the hole in the base of the computer so that they are accessible from the bottom of the computer.
   
   

2. Align the display assembly over the screw holes in the base of the computer.
   
   

NOTE: The left hinge assembly has a small tab that you must first insert underneath the edge of the palm rest.

1

tab

NOTE: When you replace the four screws, ensure that you tighten them in the order indicated by the labels "1," "2," "3," and "4" on the display hinges.

3. Replace the four M2.5 x 5-mm screws.
   
   
4. Connect the display cable to the system board.
   
   
5. Reroute the display cable into the cable channel.
   
   
6. Replace the hinge cover (see Replacing the Hinge Cover).
   
   
7. If a Mini-Card is installed, connect the antenna cables to the card (see Mini-Card). If one is not installed, tuck the antenna cables into their secured location.
   
   
8. Replace the Mini-Card cover.
   
   

Display Bezel

1	shoulder screws (4, two at the top and two at the bottom)	2	screw covers (2)	3	M2.5 x 5-mm screws (4, one on each corner)
4	rubber screw-covers/display bumpers (6)	5	display bezel

Removing the Display Bezel

CAUTION: Before you begin the following procedure, see the safety instructions 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: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer.

1. Follow the instructions in Before Working Inside Your Computer.
   
   
2. Remove the display assembly (see Removing the Display Assembly).
   
   
3. Remove the six rubber screw-covers/display bumpers.
   
   
4. Remove the two screw covers and the four shoulder screws.
   
   
5. Remove the four M2.5 x 5-mm screws at the corners of the bezel.
   
   

NOTICE: Removal of the bezel from the display back cover requires extreme care to avoid damage to the bezel.

6. Use your fingers to separate the bezel from the display back cover by pulling the lower-right corner of the bezel down toward the bottom edge (A) of the display assembly to clear the tab on the bottom of the lower-right corner. Then pull the bezel toward the right side of the display assembly to clear the tab on the side (B) of the lower-right corner.
   
   

1

display back cover

2

tabs

7. Repeat step 6 for the lower-left corner of the bezel. Then use your fingers to release the snaps around the rest of the bezel and lift it away from the display panel.
   
   

1

display bezel

2

display panel

Replacing the Display Bezel

1. Starting at any corner, use your fingers to gently snap the bezel into place to secure it to the display panel.
   
   
2. Replace the four M2.5 x 5-mm screws on the corners of the bezel.
   
   
3. Replace the four shoulder screws and two screw covers.
   
   
4. Replace the six rubber screw-covers/display bumpers around the bezel.
   
   

Display Panel

Removing the Display Panel

1	display panel	2	M2 x 3-mm screws (8)	3	display back cover
4	grounding wire and captive screw

CAUTION: Before you begin the following procedure, see the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface (such as the back panel) on the computer.

NOTICE: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer.

1. Follow the instructions in Before Working Inside Your Computer.
   
   
2. Remove the display assembly (see Removing the Display Assembly).
   
   
3. Remove the display bezel (see Removing the Display Bezel).
   
   
4. Loosen the captive ground screw that attaches the display-panel ground wire to the display back cover.
   
   
5. Remove the eight M2 x 3-mm screws (four on each side of the display panel).
   
   
6. Lift the display panel out of the display back cover.
   
   
7. Press in both sides of the top flex-cable connector, and pull the top flex-cable connector away from the display connector.
   
   
8. Use the pull-tab to disconnect the bottom flex-cable connector from the inverter connector.
   
   

1	pull-tab on bottom flex-cable connector	2	top flex-cable connector	3	display cable connector
4	inverter connector

Replacing the Display Panel

1. Reconnect the top display-cable connector to the top flex-cable connector.
   
   
2. Reconnect the bottom flex-cable connector to the inverter connector.
   
   
3. Replace the display panel inside the display back cover.
   
   
4. Tighten the captive screw that attaches the display-panel ground wire to the display back cover.
   
   
5. Replace the eight M2 x 3-mm screws (four on each side) around the display panel.
   
   
6. Replace the display bezel (see Replacing the Display Bezel).
   
   

Display Latch

Removing the Display Latch

CAUTION: Before you begin the following procedure, see the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface (such as the back panel) on the computer.

NOTICE: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer.

1. Follow the instructions in Before Working Inside Your Computer.
   
   
2. Remove the display assembly (see Removing the Display Assembly).
   
   
3. Remove the display bezel (see Removing the Display Bezel).
   
   
4. Slide the latch to the right and gently lift.
   
   
5. Remove the spring that attaches the latch to the display back cover.
   
   

1

spring

2

display latch

Replacing the Display Latch

1. Replace the spring that attaches the latch to the display panel.
   
   
2. Align the latch with the display panel and slide the latch to the left to secure it into place.
   
   

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