Dell Vostro 5515 Vostro 15 5515 Service Manual - Page 55

Installing the system board

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1. Remove the three (M2.5x4.5) screws that secure the right display hinge to the palm-rest and keyboard assembly. 2. Open the right display hinge at an angle of 90 degrees. 3. Peel the tape that secures the display cable to the system board. 4. Open the latch and disconnect the display cable from the system board. 5. Peel the tape and disconnect the power-adapter port cable from the system board. 6. Remove the two (M2x4) screws that secure the USB Type-C bracket to the system board. 7. Open the latch, and disconnect the keyboard backlit cable from the system board. 8. Open the latch, and disconnect the keyboard cable from the system board. 9. Open the latch, and disconnect the touchpad cable from the system board. 10. Disconnect the speaker cable from the system board. 11. Peel the tape and disconnect the I/O-board cable from the system board. 12. Remove the three (M2x2) screws that secure the system board to the palm-rest and keyboard assembly. 13. Lift the system board off the palm-rest and keyboard assembly. Installing the system board If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: When replacing/accessing other parts, the system board can be installed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat-sink. NOTE: Your computer's Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again after you replace the system board. The following image indicates the connectors on your system board. Removing and installing components 55

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1.
Remove the three (M2.5x4.5) screws that secure the right display hinge to the palm-rest and keyboard assembly.
2.
Open the right display hinge at an angle of 90 degrees.
3.
Peel the tape that secures the display cable to the system board.
4.
Open the latch and disconnect the display cable from the system board.
5.
Peel the tape and disconnect the power-adapter port cable from the system board.
6.
Remove the two (M2x4) screws that secure the USB Type-C bracket to the system board.
7.
Open the latch, and disconnect the keyboard backlit cable from the system board.
8.
Open the latch, and disconnect the keyboard cable from the system board.
9.
Open the latch, and disconnect the touchpad cable from the system board.
10.
Disconnect the speaker cable from the system board.
11.
Peel the tape and disconnect the I/O-board cable from the system board.
12.
Remove the three (M2x2) screws that secure the system board to the palm-rest and keyboard assembly.
13.
Lift the system board off the palm-rest and keyboard assembly.
Installing the system board
If you are replacing a component, remove the existing component before performing the installation procedure.
NOTE:
When replacing/accessing other parts, the system board can be installed with the heat sink attached in order to
simplify the procedure and preserve the thermal bond between the system board and heat-sink.
NOTE:
Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
NOTE:
Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You
must make the appropriate changes again after you replace the system board.
The following image indicates the connectors on your system board.
Removing and installing components
55