What was found
DTW - REPLACED ROLL COMPUTER FOR AUTO-PILOT TROUBLESHOOTING. REPLACE PITCH COMPUTER CANNON PLUG FOR AUTO-PILOT SYSTEM TROUBLESHOOTING. REF DMI NR 00196 AUTO-PILOT WILL NOT ENGAGE WITH ELEVATOR SERVO ON. REMOVED AND REPLACED AUTO-PILOT ROLL COMPUTER, AUTO-PILOT SYSTEM CHECKS GOOD PER MM 22-10-0 AND PITOT STATIC CHECK PER MM 34-10-0. REMOVED AND REPLACED PITCH COMPUTER RACK PLUG AUTO-PILOT SYSTEM CHECKS GOOD PER MM 22-10-0 AND PITOT STATIC CHECK PER MM 34-10-0. REPLACED PITCH AXIS COMPUTER. OPS CHECK GOOD IAW DC-9 MM 22-10-0 THIS CLEARS DMI NR 00196. PLACARDS REMOVED. REF GTIA9700159/GTIA9700166.