TM 5-6350-264-14&P-9 NAVELEX EE 181-AA-OMI-100/E121 DZ-204 T.O. 31S9-2FSS9-1-9 u.    To remove connector P1, loosen screws and disconnect P1 from J2.  Tag wires. Use     a     soldering     iron     of     50     watts maximum to unsolder wires. Remove connector P1. v.    To    install    new    connector    P1,    solder wires  to  connector.    Connect  to  J1  and tighten screws. w.    To  remove  fuse  holder  assembly,  slide inner   enclosure   part   way   out   of   outer enclosure.  Remove screws from switch bracket.    Lower  switch  bracket  to  gain access  to  fuse  holder  assembly.    Tag wires   and   use   a   soldering   iron   of   50 watts     maximum to unsolder wires. Remove    hex    nut    and    remove    fuse holder assembly. x.    To    install  new    fuse  holder  assembly, position assembly in switch bracket and install  hex  nut.    Solder  wires.    Position switch  bracket  on  inner  enclosure  and install   mounting   screws.      Slide   inner enclosure into outer enclosure. y.    To remove varistor, remove screws from barrier   strip   cover   and   remove   barrier strip cover. Note varistor wire connection   on   TB1.      Loosen   terminal screws and remove varistor. z.    To  install  new  varistor,  install  insulation tubing on varistor wires.  Connect wires to   TB1   and   tighten    terminal    screws. Position   barrier   strip   cover   and   install mounting screws. WARNING Operation  of  this  equipment  presents  a noise  hazard  to  personnel  in  the  area. The  noise  level  exceeds  the  allowable limits for unprotected personnel. Authorized   protective   equipment   must be   worn   by   all   personnel   in   the   work area. aa.    After   replacing   major   components    or assemblies,  test  the  Audible  Alarm  for proper    operation.        Set    Control    Unit POWER switch to ON.  Set Control Unit mode  switch  to   SECURE.      Initiate   an intrusion    alarm.        The    alarm    should sound    after    expiration    of    time-delay period.  Set Control Unit mode switch to TEST/   RESET   and   then   to   ACCESS. The  alarm  should  stop.    Using  the  key, unlock  and  slowly  open  Audible  Alarm outer    enclosure    door.        The    Audible Alarm    should    sound    when    door     is opened 1/8 to 1/4 inch.  Place the door tamper switch in the maintenance position.      Set   the   Control   Unit   mode switch    to    TEST/RESET    and    then    to ACCESS.        The    alarm    should    stop. Short  the  outer  enclosure  to  the  inner enclosure.    The  Audible  Alarm  should sound.      Remove   the   short.      Set   the Control    Unit    mode    switch    to    TEST/ RESET   and   then   to   ACCESS.      The alarm should stop.  Using the key, close and     lock     the     Audible     Alarm     outer enclosure   door.      The   Audible   Alarm should   sound.      Set   the   Control   Unit mode  switch  to  TEST/RESET  and  then to ACCESS.  The alarm should stop. 5-30