HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 182

Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.15 Front I/O Device 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the optical drive (Section 8.4). 4. Remove the front panel assembly (Section 8.5). 5. Disconnect the three front I/O, fan, and speaker cables from the system board. 6. Remove the hard drive (Section 8.14). 7. Remove the two screws that hold the front I/O device in place 1. 8. Remove the I/O device assembly from the chassis to access the audio cable. 9. Disconnect the audio cable from the system board and pull that cable through the tunnel opening in the chassis. 10. Disconnect the remaining I/O cables from the system board. To install the front I/O device, follow this sequence: 1. Thread the audio cable through the tunnel in the chassis and attach it to the front I/O board. 2. Attach the front USB cable and the power switch/LED cable to the front I/O board. 3. Attach the front I/O board to the chassis with two screws. 4. Plug the cables into the system board. ✎ All cables are color coded to match their connectors on the front I/O board and are keyed to prevent improper connections. 8-20 433612-001 Service Reference Guide, dc7700