TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download

Page 154 of 266

TM 9–1200–215–34&P 5–16 5–17. CABLE ASSEMBL Y MAINTENANCE INSTRUCTIONS CONTINUED b. INSTALLATION CAUTION ESD SENSITIVE The VMS Modem contains ESD sensitive components. Wear a protective ESD wrist strap whenever handling components. Failure to comply may result in damage to equipment. 1. Attach ESD grounding strap to wrist and ground to ensure ESD protection. CAUTION The EMI shielding gasket is vital to this piece if equipment and is easily damaged. Handle with care when removing or replacing it. Gasket will break if stretched. Failure to comply may result in damage to equipment. NOTE If a new cable is installed it may be necessary to remove jam nuts prior to next step. 2. Position EMI shielding gaskets (5 and 6) onto J1 (2) and J2 (3) connectors. 3. Place J1 connector (2) and J2 connector (3) into position in VMS Modem housing (4). Place jam nuts (1) on J1 and J2 connectors and hand tighten. 4. Torque jam nut (1) on connector J1 (2) to 70+ 5 in.–lb (7.9+ .6 NSm) and jam nut (1) on connector J2 (3) to 60+ 5 in.–lb ( 6.8+ .6 NSm). 5. Install heatsink assembly IAW procedure outlined in paragraph 5–16. 6. Install indicator IAW procedure outlined in 5–14. 2 3 4 5 6 TO LED’S 1