Dell Precision 7550 Serviceanleitung Seite 66

Steps
1. Adhere the coin-cell battery to the palmrest and then place the system board on its slot on the palmrest.
2. Replace the three (M2x5) screws to secure the system board to the palmrest.
3. Connect the display cable, touch screen cable (for models shipped with a touch screen) or IR camera cable (for models shipped with
an IR camera), power adapter cable, touchpad cable, USH daughter board FFC (for models shipped with a USH daughter board), and
power button board cable to the connectors on the system board.
4. Replace the display cable bracket on the display cable.
5. Replace the (M2x5) screw to secure the display cable bracket to the system board.
6. Connect the Darwin cables to the connectors on the system board.
7. Replace the Darwin cable bracket on the Darwin cable connector.
8. Replace the (M2x3) screw to secure the Darwin cable bracket to the system board.
9. Connect the beam connectors on the system board.
NOTE:
• For UMA models, replace the two (M2x3) screws to secure the single beam connector in place on the bottom side
of the system.
• For discrete models shipped with a 128 MB vram GPU card, replace the four (M2x3) screws to secure the two
beam connector in place on the bottom side of the system.
• For discrete models shipped with a 256 MB vram GPU card, replace the six (M2x3) screws to secure the three
beam connector in place on the bottom side of the system.
10. Connect the speaker cable and SD card reader cable to the connectors on the system board.
11. Connect the GPU power cable to the connector on the system board on the top side of the
12. Lock the GPU power cable connector on the system board.
Next steps
1. Install the inner frame.
2. Install the heat-sink assembly.
3. Install the primary memory.
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