Dell Inspiron 16 Plus 7640 Owner's Manual page 84

Figure 59. Installing the system board 2
Steps
1. Place the system board on the palm-rest and keyboard assembly.
2. Align the ports on the system board with the ports on the palm-rest and keyboard assembly.
3. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
4. Replace the three screws (M2x3) that secure the system board to the palm-rest and keyboard assembly.
5. Connect the I/O-board cable from its connector (IOBD1) on the system board and close the latch.
6. Connect the power-adapter port cable from its connector (DCIN1) on the system board.
7. Adhere the tape that secures the power-adapter port cable to its connector (DCIN1) on the system board.
8. Place the Type-C port-bracket on the system board.
9. Replace the two screws (M2x4) that secure the Type-C bracket to the system board.
10. Connect the keyboard cable to its connector (KB1) on the system board and close the latch.
11. Connect the keyboard-backlight cable to its connector (KBBL1) on the system board and close the latch.
12. Connect the touchpad cable to its connector (TP1) on the system board and close the latch.
13. Connect the down-firing speaker cables to their connector (SPK1) on the system board.
14. Place the antenna cables into their routing guides on the system board.
15. Connect the audio-board cable to its connector (IOBD2) on the system board and close the latch.
Next steps
1. Install the M.2 2230 solid-state drive
2. Install the wireless card.
3. Install the heat sink.
NOTE: If either the system board or the heat sink is replaced, use the thermal grease that is provided in the kit to
ensure that thermal conductivity is achieved.
4. Install the processor fan.
5. Install the graphics processing unit
84 Removing and installing Field Replaceable Units (FRUs)
or M.2 2280 solid-state
fan.
drive, whichever is applicable.