TM-5-6675-316-14 B  -  Before D  -  During A  -  After ITEM NO. 1 lN- TER- VAL B Table 3-2. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES NOTE If  the  equipment  must  be  kept  in  continuous  operation,  check  and  service  on- ly  those  items  that  can  be  checked  and  serviced  without  disturbing  operation. Make  the  complete  checks  and  services  when  the  equipment  can  be  shut down. W  -  Weekly AN  -  Annually (Number) - Hundreds of Hours M  -  Monthly s - Semiannually Q  -  Quarterly BI   -   Biennially ITEM  TO  BE  INSPECTED PROCEDURE COMBINED  DRAFTING  AND  MEASURING  MACHINE Inspect  Machine. 1. 2. 3. 4. 5. 6. 7. 8. Inspect  cabinets,  casings,  frames,  and  other exterior  surfaces  of  machine  for  signs  of  damage, such as cracks and breaks. Check  that  all  cables  are  connected  and are tight. Check  glass  surface  and  pinion  racks  for  dirt and  foreign  particles.  Clean  as  required. Check  teletype  platen  for  dirt  and  foreign particles,  Clean  as  required. Check  that  keys  on  operator’s  console  keyboard are free. Turn  on  machine  and  controller.  Check  that machine  fluorescent  lights  and  ventilation fans  are  on.  Check  that  controller  power button  is  lit  and  operator’s  console  displays asterisk  (*)  in  its  right-hand  corner.  Check that  you  can  hear  ventilation  fans  in  rear  of cabinet  working. Turn on XY Display and press RESET on digitizing  keyboard.  Check  that  display  shows all  zeros  and  keyboard  measuring  mode  display shows   an   “E”. Turn  teletype  power  switch  to  LOCAL.  Check  that it  is  on  by  listening  for  hum  of  drive  motor located   beneath   paper   roll   inside   cabinet.   . For Readiness Reporting, Equipment  Is Not Ready/ Available  If: Glass broken or cracked. Loose cables. Keys stuck. Ventilation fans inoper- ative. XY  display inoperative. Drive motor not on. Change 1 3-33