TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM9-2350-311-20-1 GO I VTM CONNECTIONS AND CHECKOUT— Does VTM display PASS? Refer to confidence test fault isolation in TM 9-4910-571-12&P. VTM can fail confidence test if bad transducer is connected to it. If VTM fails confidence test when powered by W5, disconnect all cables from J2, J3, and J4 and try again. If it passes, one of transducers is bad. If it fails, VTM has failed internally. Figure 2, Sheet 5 of 20 I-11 Go to Figure 2, sheet 6.