TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 INFRARED PERISCOPE WORKS IMPROPERLY — Continued 0040 00 Y High voltage in the M19 periscope can cause serious injury or death. Voltage could exceed 16,000 volts. To avoid accidents, observe the following: Always connect power cable to periscope before turning MASTER SWITCH and infrared (I.R.) POWER switch to ON. Before disconnecting power cable from M19 periscope, always wait at least two minutes after turning infrared (I.R.) POWER switch and MASTER SWITCH OFF. Do not disconnect power cable until image disappears from periscope screen. Never touch end of power cable, or allow it to contact metal surfaces. 1. Replace I.R. power pack with known good power pack (WP 0291 00 or WP 0293 00). 2. Turn MASTER SWITCH to ON (see your -10). 3. Turn I.R. switch to ON (see your -10). 4. Does I.R. periscope work? YN GO TO BY (PAGE 0040 00-3) 2Y 1. Replace original I.R. power pack (WP 0291 00 or WP 0293 00). 2. Verify no faults found. 0040 00-2 WARNING