TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5-8 DIRECT SUPPORT SYMPTOM INDEX Troubleshooting Procedure (Page) LAMP ASSEMBLY Reticle is not illuminated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 5-7 AZIMUTH KNOB Azimuth knob does not function correctly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-7 ELBOW ASSEMBLY Lens is fogged or condensation is present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-8 5-9. DIRECT SUPPORT TROUBLESHOOTING MALFUNCTION TEST OR INSPECTION LOCATION CORRECTIVE ACTION 1. 2. LAMP ASSEMBLY RETICLE IS NOT ILLUMINATED. Observe visually. a. b. c. Replace LED (1) (ref. para 5-14 or 5-15). Replace lamp assembly (2) (ref. para 5-14 or 5-15). Replace variable resistor (ref. para 5-14 or 5-15). AZIMUTH KNOB AZIMUTH KNOB (4) DOES NOT FUNCTION CORRECTLY. Rotate azimuth knob. Replace 5-13). azimuth knob (4) (ref. para 5-7