TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download
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TM 9–1200–215–34&P 2–31 2–19. POWER SUPPL Y ASSEMBL Y MAINTENANCE INSTRUCTIONS CONTINUED b. INSTALLATION CAUTION ESD SENSITIVE The ACU 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. 2. Position Power Supply Assembly (3) in ACU housing. 3. Insert eight new screws with seals (14), eight flat washers (15), eight new lockwashers (16) and eight nuts (17). Torque screws to 5 in–lb (0.6 NSm). 4. Connect connector P1 (12) to backplane at J20 (13). 5. Connect cable (1) at J1 connector (2) on Power Supply Assembly (3). 6. Connect three cable connectors (4, 5 and 6) to backplane at J15, J16 and J17 respectively, and secure by tightening two captive screws (7) on each connector. 7. Install clamp (11) by inserting screw (8), new lockwasher (9) and flat washer (10). 8. Install stabilizer brackets in accordance with procedure outlined in paragraph 2–14. Change 1 3 12 14 8 9 10 13 15 16 17 2 5 7 7 1 11 4 6