What was found
LAX - FLT 39 - ON APPROACH DURING GEAR EXTENSION, LEFT MAIN RED GEAR LIGHT CAME ON. THE ALTERNATE GEAR EXTENSION METHOD WAS USED AND ALL LIGHTS FUNCTIONED PROPERLY. REMOVED AND REPLACED PROXIMITY BOX, MFG PN 3260-0014-83. OPERATIONAL CHECK NORMAL. CHECK C-2D 7-19-95 - MCI.