As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHEN GEAR SELECTED UP AFTER TAKEOFF, 3 RED UNSAFE LIGHTS CAME ON AND THE GEAR FAILED TO RETRACT. PILOT RAN THE QRH AND HAD 3 GREEN FOR AN UNEVENTFUL LANDING. MX DISCOVERED THE NOSE WHEEL CENTERING FUNCTION INOP WHEN THE NOSE GEAR TRANSITIONED TO WEIGHT OFF WHEELS. A NEW SCU WAS INSTALLED AND THE CENTERING FUNCTION RESTORED. ACFT RETURNED TO SERVICE.