TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download
Page 53 of 266
TM 9–1200–215–34&P 2–18 2–16. DISCRETE I/O AND SERVO CCA(s) MAINTENANCE INSTRUCTIONS DESCRIPTION This task covers: a. Removal b. Installation INITIAL SETUP Tools: Tool Kits, JTK–17LAL, TK–101/G, or TK–105/G (items 34, 35, & 36, Appendix E) Torque Wrench, 0–15 in.–lb (item 39, Appendix E) #1 Crosstip Screwdriver Socket Wrench (item 21, Appendix E) Materials/Parts: Bag, Plastic (item 6, Appendix D) Box, Shipping (item 8, Appendix D) Equipment Conditions: Stabilizer brackets removed; if not, remove stabilizer brackets in accordance with paragraph 2–14 Personnel Required: One MOS 35Y a. REMOVAL 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. NOTE Both Discrete I/O and Servo CCAs are removed in the same manner. The Discrete I/O disconnects from connectors J10 and J1 1 on backplane and the Servo disconnects from connectors J12 and J13 on backplane. 1. Attach ESD grounding strap to wrist and ground to ensure ESD protection. 2. Remove screw (1) and flat washer (2) from holddown of CCA (4). 3. Loosen screw (3) (approximately six turns) in Loktainer of CCA (4). 4. Gently remove CCA (4) from backplane (5) in ACU housing and place in ESD protective bag. 1 2 4 5 3