Dell XPS 15 L502X Service Manual - Page 102
Entering the Service Tag in the BIOS
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5 Replace the processor module (see "Replacing the Processor Module" on page 97). 6 Replace the heat sink (see "Replacing the Heat Sink" on page 92). 7 Turn the top cover over and connect the USB board cable and speaker cable to the connectors on the system board. 8 Follow the instructions from step 8 to step 11 in "Replacing the Top Cover" on page 69. 9 Replace the display assembly (see "Replacing the Display Assembly" on page 52). 10 Replace the keyboard (see "Replacing the Keyboard" on page 45). 11 Replace the palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 32). 12 Replace the memory module(s) (see "Replacing the Memory Module(s)" on page 18). 13 Replace the module cover (see "Replacing the Module Cover" on page 16). 14 Replace the battery (see "Replacing the Battery" on page 14). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 15 Turn on the computer. NOTE: After you have replaced the system board, enter the computer Service Tag in the BIOS of the replacement system board. 16 Enter the service tag (see "Entering the Service Tag in the BIOS" on page 102). Entering the Service Tag in the BIOS 1 Ensure that the AC adapter is plugged in and that the main battery is installed properly. 2 Turn on the computer. 3 Press during POST to enter the system setup program. 4 Navigate to the security tab and enter the service tag in the Set Service Tag field. 102 System Board
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