As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF CREW LOST BOTH ENG BLEEDS & CROSS BLEED VLV, STARTED APU FOR BLEED, DIVERTED. ACCOMPLISHED BMC BITE CHECKS OK. ACCOMPLISH FAULT CHECK OF CROSS BLEED VLV POSITION CONTROL OK. REPLACED PRESS REGULATOR VLV. OPERATIONS CHECKED GOOD.