TM  5-6675-317-14 Table  8-1. OPERATOR   PREVENTIVE   MAINTENANCE NOTE CHECKS AND SERVICES If   the   equipment   must   be   kept   in   continuous   operation,   check   and   service only   those   items   that   can   be   checked   and   serviced   without   disturbing   oper- ation. Make   the   complete   checks   and   services   when   the   equipment   can   be shut   down. B - Before W - Weekly AN - Annually D - During (Number)   - Hundreds of Hours M - Monthly s    - Semiannually A - After Q - Quarterly BI -  Biennially 1 2 3 4 B B Q B ITEM  TO  BE  INSPECTED PROCEDURE SUPPORT  ITEMS Inspect   Magnifier   Lamp. 1. Inspect   lens   for   cracks,   breaks,   or   dirt. Clean   as   required. 2. Inspect   arms   and   bracket   for   cracks   or   breaks. Replace   as   required. Clean   Magnifier   Lamp. 1. Turn   off   magnifier 2. APPly   small   amount 1 amp. of   liquid   lens   cleaner   to lens-and   wipe   clean   with   cheesecloth. 3. Turn   on   magnifier   lamp. Inspect   Vacuum   Cleaner. Inspect   vacuum   cleaner   for   damage   to housing,   frayed   or   worn   power   cord   and   proper operation   of   motor. Clean   Pocket   Stereoscope. 1. Inspect   lenses   for   dust,   dirt,   cracks, or   breaks. 2. Clean   lenses   with   lens   tissue. 3. Inspect   housing   and   legs   for   cracks   or   breaks. For  Readiness Reporting, Equipment Is Not  Ready/ Available  If: Lens   cracked   or broken. Arms  or  base cracked   or broken. Cracked   or   bro- ken   housing. Frayed,    worn, or  damaged  power cord   or   plug. Noisy   or   impro- per   motor   oper- ation. 8-8