TM-9-1240-216-34 Maintenance Manual M19 and M24 Persicope Download
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TM 9-1240-216-34 4-5. NO IMAGE OR DIM IMAGE OR POOR FOCUS IN EITHER EYEPIECE (SHEET 3 OF 10) USING MULTIMETER, CHECK RESISTANCE BETWEEN CONTACT RING (1) AND HOUSING (2) (JPG) LOOK AT WIRE (3) FROM ELECTRON TUBE (4) INSTALL ELECTRON TUBE (4) (VOL II, PARA 4-30) SEND PERISCOPE TO DEPOT FOR REPAIR Para 4-5 (Sheet 3 of 10) 4-18 Vol I