What was found
AFTER TAKE-OFF AND GEAR RETRACTION, GEAR UNLOCK ANNUNCIATOR REMAINED ON, AS DID HYDRAULIC PRESSURE. IAW CHECKLIST CYCLED HYDRAULIC CONTROL CIRCUIT BREAKER. BOTH ANNUNCIATORS WENT OUT AND GEAR EXTENDED NORMALLY. DIVERTED, AND LANDING WAS UNEVENTFUL. MAINTENANCE PERFORMED SYSTEM TEST TO INCLUDE MULTIPLE GEAR EXTENSION AND RETRACTION WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.