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 1–2 c. Circuit Card Assemblies (CCAs) removed from the LRUs must be handled and stored in a manner that will provide Electrostatic Discharge (ESD) protection of the CCAs. Place CCAs in ESD protective bag. d. Special corrosion instructions. Special use of corrosion–preventive compounds, moisture barriers, and desiccant materials are not required for the AFCS or PDIU components (LRUs). e. Special marking instructions. Not applicable to the AFCS or PDIU components (LRUs). 1–6. NOMENCLATURE CROSS–REFERENCE The following table provides a cross–reference listing of official nomenclature to common names. COMMON NAME OFFICIAL NOMENCLATURE AFCS Computer Unit (ACU) Computer, Digital (AFCS XXI) Communication Processing Control, Communications System Contact Test Set or Lightweight Computer Unit (LCU) Electronic Systems Test Set Display Unit Display, Optical Electrical Electrostatic Discharge Strap Work Station Kit, Electronic Power Conditioning Unit Control, Power Supply Power Supply DC–DC Converter Software Download Install Software TCIM Tactical Communication Interface Module VMS Modem Communication Modem Weapons Controller Ballistic Computations 1–7. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDA TIONS (EIR) If your AFCS or PDIU needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you don’t like about your equipment. Let us know why you don’t like the design or performance. Put it on an SF 368 (Product Quality Deficiency Report). Mail it to Department of the Army, U.S. Army Tank–automotive and Armaments Command, ATTN: AMSTA–LC–CIP–W, Rock Island, IL 61299–7630. 1–8. SAFETY, CARE, AND HANDLING a. AFCS components are equipped with handles to facilitate handling. All components are within acceptable weight limits for a one person lift per MIL–STD–1472. b. AFCS and PDIU LRUs are protected from Electrostatic Discharge (ESD) when fully assembled; however, exposed circuit card assemblies (CCAs), connectors, and electronic components are sensitive to ESD. Whenever removing AFCS and PDIU LRU covers, or handling exposed CCAs or electronic components, ensure grounded wrist straps are worn and other ESD precautions are observed. The following documents reference the required specifications: (1) MIL–STD–1686: Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies, and Equipment. (2) MIL–HDBK–263: Electrostatic Discharge Handbook for Protection of Electrical and Electronic Parts, Assemblies, and Equipment. (3) Technical Manual (TM) 9–254: General Maintenance Procedures for Fire Control Materiel. Change 1