3701 B2 door unable to open. To check an ~~~~~ 3701 B2 door unable to open.     Check and confirmed #3701-B2 door unable to open when commanded.Tims show door open operation time out.Observed door lock device did not unlock,suspect unlock solenoid faulty.Replaced DLD when function test,DLD did not unlock and obseeved smoke from unlock solenoid.Further check,DCP to unlock solenoid CN16 pin B5 having 106vdc constant supply.160vdc shound only be present when door enable command input,zero velocity command input ,solenoid drive output signals are all present.Replaced DCP and DLD,conf CN16 no supply when door not commented open.Function test ok-Door able to open/close within spec.    DLD original report: C151CDL164039 Not: 2340103 DLD new but burn: C151BDL142035 Not: 2340102 DLD Newest: C151BDL142040 Not: 2340106 Done by Lincoln/Arthur Sam. 13/12/21