TM 55-1930-209-14&P-19 Section II Table 10-3.  Preventive Maintenance Checks and Services for Lighting System B - Before D - Daily Q -  Quarterly D - During W - Weekly S -  Semiannually A - After M - Monthly A -  Annually INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY LIGHTING SYSTEMS 1 Interior Lighting System WARNING Be sure that electrical power is OFF before performing any maintenance on electrical systems.  Redtag appropriate switches and circuit breakers with: "WARNING - DO NOT ACTIVATE.  REPAIRS BEING MADE." a.  Check for damaged, loose, or frayed Cables damaged, cables and loose connections.  Repair, loose or frayed. replace or tighten as necessary. Connections loose. b.  Check for loose or missing securements and fasteners.  Tighten and replace as necessary. c.  Clean lighting panels and switches with dry, lint-free cloth or vacuum cleaner. d.  Check for burned out bulbs.  Replace as necessary. e.  Remove rust and corrosion.  Touch up paint in accordance with TB 43-0144 as necessary.  Do not paint threads or labels. 2 Exterior Lighting System WARNING Be sure that electrical power is OFF before performing any maintenance on electrical systems.  Redtag appropriate switches and circuit breakers with: "WARNING - DO NOT ACTIVATE.  REPAIRS BEING MADE." Observe all safety precautions listed at the beginning of this manual. a.  Check for damaged, loose, or frayed Cables damaged, cables, and loose connections.  Repair, loose or frayed. replace or tighten as necessary. Connections loose. 10-5