TM 5-6675-319-14 Table    4-3.    ORGANIZATIONAL    TROUBLESHOOTING MALFUNCTION TEST OR INSPECTION CORRECTIVE  ACTION 1. LAMPS   FAIL   TO   LIGHT   IN   EITHER   WHITE   LIGHT   OR   ORTHO-SAFE   LIGHT   POSITION. Check   switch. Replace   defective   switch   (paragraph   4-16.1). 2.   NO   LAMPS   LIGHT. Step    1.    Check ( a) ( b) Step   2.   Check s w i t c h. If    switch    is    not    defective,    proceed    to    step    2. Replace   defective   switch   (paragraph   4-16.1). power    cord. Replace    defective    power    cord    (paragraph    4-16.2). 4-16.  MAINTENANCE  PROCEDURES. a.    This    section    contains    instructions    covering    organizational    maintenance functions    for    the    darkroom    film    viewer. Personnel    required    are    listed    only if    the    task    requires    more    than    one. b.   After   completing   each   maintenance   procedure,   perform   operational   check to   be   sure   that   equipment   is   properly   functioning . INDEX PROCEDURES PARAGRAPH Replace     Switch     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     .     4-16.1 Replace Power Cord . . . . . . . . . . . . . . . . . . . . . . . . 4-16.2 Remove/Install Darkroom Film Viewer . . . . . . . . . . . . . . . . . . 4-16.3 4-13