TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5.1-12. GENERAL SUPPORT TROUBLESHOOTING MALFUNCTION TEST OR INSPECTION LOCATION CORRECTIVE ACTION LEVEL ASSEMBLY 1. LEVEL VIALS (1) HAVE UNEVEN OR NO ILLUMINATION WITH 24 VOLTS DC APPLIED. Observe visually in darkened area with 24 volts DC applied. a. Replace LED (ref. para 5.1-22). b. Replace electrical wiring or contacts (ref. para 5.1-22). c. Replace components of electrical receptacle (ref. para 5.1-22). CORRECTION KNOB ASSEMBLY 2. CORRECTION KNOB (2) BINDS. Check for defective correction counter. Replace correction counter assembly (ref. para 5.1-19). COUNTER ASSEMBLY 3. COUNTER NUMBERS (3) ARE NOT IN HORIZONTAL ALINEMENT. Step 1. Observe visually for defective counters. Replace counter assembly (ref. para 5.1-19). Step 2. Check for incorrectly assembledcounter assembly. Reassemble counter assembly correctly (ref. para 5.1-20). 5.1-14 Change 1