HP FA303AA User Manual page 7

9. An icon will appear for the BT Headphones. Tap this icon.
10. When your device discovers the headphones for the first time,
you will be prompted for a Passkey. The Passkey is 0000
11. Tap OK.
12. Tap Finish.
13. When pairing is sucessful, the LED on the headphones will
flash blue.
14. If no pairing occurs in the next two minutes, the headphones
will return to stand-by mode, and the LED will flash blue.
HP iPAQ Bluetooth Stereo Headphones User's Guide 7