Steps
1. Remove the screw (M1.6x2.5) that secures the WLAN-card bracket to the WLAN card.
2. Lift the WLAN-card bracket off the WLAN card.
3. Disconnect the WLAN antenna cables from the WLAN card.
4. Peel the tapes that secure the WLAN antenna cables to the system board and remove them from the routing guides on the system
board.
5. Remove the screw (M2x3.5) that secures the USB Type-C port bracket to the system board.
6. Remove the three screws (M2x3.5) that secure the display-cable bracket to the system board.
7. Disconnect the display cable from the system board.
8. Disconnect the touchscreen cable from the system board.
NOTE:
Applicable on computers with touchscreen configuration.
9. Remove the screw (M2x3) that secures the solid-state drive extension bracket to the system board and palm-rest assembly.
10. Remove the screw (M2x3) that secures the system board to the palm-rest assembly.
11. Disconnect the P-sensor cable from the system board.
NOTE:
Applicable on computers shipped with WWAN card.
12. Disconnect the coin-cell battery cable from the system board.
13. Peel the tape that secures the I/O-board cable to the system board.
14. Open the latch and disconnect the I/O-board cable from the system board.
15. Open the latch and disconnect the fingerprint-reader cable from the system board.
16. Open the latch and disconnect the touchpad cable from the system board.
17. Open the latch and disconnect the keyboard cable from the system board.
18. Open the latch and disconnect the keyboard-backlit cable from the system board.
19. Gently release the ports on the system board from the slots on the palm-rest assembly and lift the system board off the palm-rest
assembly.
20. Turn the system board over and disconnect the I/O-board data cable from the connector on the system board.
NOTE:
When replacing the system board, technician must remember to connect the I/O-board cable to the I/O
connector that is located under the system board; Failing to do so, will result in additional repair time of replacing
the system board again. Turn the system board over to access the I/O connector that is located under the system
board
Removing and installing components
51
Summary of Contents for Inspiron 7490 P115G
Page 1: ...Inspiron 7490 Service Manual Regulatory Model P115G Regulatory Type P115G001 ...
Page 49: ...Removing and installing components 49 ...
Page 50: ...50 Removing and installing components ...
Page 53: ...Removing and installing components 53 ...