TM 10-3610-202-14 WARNING Extreme    care    should    be    taken when     handling     mercury     vapor lamps   to   prevent   shattering   and subsequent ultraviolet output causing skin and eye irritation. d.    Push  lamp  tube  to  one  side  into  tube  holder against spring tension and carefully remove lamp tube. CAUTION To    avoid    mercury    vapor    lamp failure,   white   gloves   should   be worn    when    handling    the    glass portion   of   the   tube,   to   prevent transfer    of    fingerprints    to    the glass,   and   subsequent   decrease of lamp efficiency. e.    Insert lamp tube (Item 7, App.  D) end into one tube  holder  and  push  against  spring  tension  until  the other end of the tube can be inserted Into the other tube holder. f.    Check  that  the  lamp  tube  rotates  freely  in  tube holders. g.    Rotate the tube until the small protrusion in the center of the tube is positioned to point towards the rear or front of the platemaker.  The protrusion should never point toward the top or bottom of the unit. h.    Position   the   light   glass   shield   and   install   the attaching clamps and setscrews. i. Position flip-top frame to horizontal position. WARNING The   mercury   vapor   lamp   should not    be    operated    above    110    of rated    voltage.        Such    operation increases     pressure     within     the lamp which could cause the lamp to shatter with subsequent ultraviolet    output    causing    skin and eye irritation. j.    Position  PLATEMAKER  circuit  breaker  in  main power service box to on. 3-9.  Light Table Fluorescent Tube. Replace the light table fluorescent tube follows a. Position  ROADSIDE  RECEPTACLES  circuit  breaker  in main power service box to off b.  Remove sheet metal screws  attaching  straightedge  holddown  straps  to  light table housing. c.    Lift light table top cover to obtain access to light table interior. d.    Remove  defective  fluorescent  tube  and  install serviceable unit. e.    Carefully lower light table top. f.    Position    straightedge    holddown    straps    over holes  in  table  housing  and  install  attaching  screws  g. Position  ROADSIDE  RECEPTACLES  circuit  breaker  in main power service box to on. 3-10.  Camera Lamp. Replace the camera lamp as follows: NOTE It may be necessary to retract the camera   bellow   or   reposition   the lamp    fixtures    in    order    to    gain access   to   the   camera   lamps   a. Position CAMERA  circuit breaker in main power service box to off. b.    Carefully  remove  defective  camera  lamp  from lamp fixture. c.    Insert replacement lamp (Item 25.  App.  D) into fixture. d.    Position CAMERA circuit breaker in main power service box to on. 3-11.  Camera Copyboard Vacuum Hose. Replace   vacuum   hose   as   follows:   a.      Position CAMERA  circuit  breaker  in  main  power  service  box  to off. b.    Remove   clamp   attaching   hose   to   flange   on underside of camera copyboard. c.    Remove  clamp  attaching  hose  to  pump  flange on the top of the sound attenuator. d.    Remove vacuum hose. e.    Position  ends  of  replacement  hose  over  pump and    copyboard    flanges    and    secure    with    attaching clamps. 3-8