HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 135

Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 16. Install the serial connector into the new backwall using the two screws that were removed from the serial connector in a previous step. Reconnect the "Serial A" cable to the system board. 17. Install the system board tray assembly. Be sure the keyhole slot on the system board sits properly over the locking pins. When the system board is in position, replace the long mounting screw to secure the system board to the chassis. 18. Install the chassis fan and connect the control cable to the system board. 19. Reconnect all power and data cables to the system board. Be sure to use proper cable handling and placement precautions. 20. Install the power supply. Rotate it to its normal operating position. Be sure to use proper cable handling and placement precautions. 21. Install the full-height PCI expansion card in the available slot in the new PCI riser card cage assembly. 22. Install the new PCI riser card cage assembly on the new backwall by aligning the cage with the guide rails on the backwall. Press down firmly on the cage to secure it in place on the backwall. Be sure the riser card in the cage is properly seated in the PCI expansion slot on the system board. Service Reference Guide, dc7700 433612-001 7-21