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Dell OptiPlex All-in-One Plus 7420 - Page 100

Dell OptiPlex All-in-One Plus 7420
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Figure 70. Installing the system board
Steps
1. Gently place the system board on the display-assembly base.
2. Align the screw holes on the system board with the screw holes on the display-assembly base.
3. Replace the seven screws (M3x5) that secure the system board to the display-assembly base.
4. Replace the screw (M3x12) that secures the system board to the display-assembly base.
5. Connect the touchscreen cable to its connector (TOUCH) on the system board.
6. Connect the display-backlight cable to its connector (LCB BACKLIGHT) on the system board.
7. Connect the camera cable to its connector (WEBCAM) on the system board.
8. Connect the processor-power cable to its connector (ATX CPU) on the system board.
9. Connect the fan cable to its connector (FAN CPU) on the system board.
10. Connect the control-signal cable to its connector (CTRL) on the system board.
11. Connect the system-board power cable to its connector (ATX SYS) on the system board.
12. Connect the power-supply fan cable to its connector (FAN SYS) on the system board.
13. Connect the audio cable to its connector (MB-AUDIO) on the system board and close the latch.
14. Connect the high-speed cable to its connector (MB-HS) on the system board and close the latch.
15. Connect the power cable to its connector (MB-PWR) on the system board and close the latch.
16. Connect the display cable to its connector (LVDS) on the system board.
Next steps
1. Install the processor.
2. Install the heat sink.
3. Install the wireless card.
4. Install the M.2 2230 solid-state drive in slot 0 or the M.2 2280 solid-state drive in slot 0, whichever is applicable.
5. Install the M.2 2230 solid-state drive in slot 1 or the M.2 2280 solid-state drive in slot 1, whichever is applicable.
6. Install the I/O bracket.
7. Install the bottom cover.
8. Install the I/O cover.
9. Install the system-board shield.
100
Removing and installing Field Replaceable Units (FRUs)

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