1、MIL-STD-211 O( EC) 11 December 1979 MILITARY STANDARD RESTORATION, OVERHAUL, AND REPAIR OF ELECTRONIC EQUlPM.EMT FSC MlSC AMSC NUMBER 23065 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-Sm-2110 (EC) 11 December 1973 NAVAL ELECTRONIC SYSTEMS COM
2、MAND DEPARTMENT OF THE NAVY Washington, DC 20360 Restoration, Overhaul, and Repair of Electronic Equipment HIL-STD-2110 (EC) ment of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. This Military Standard is approved for use by the Naval Electronic
3、Systems Comnand, Depart- 2. Beneficial coments (recommendations, additions, deletions) and any pertinent data which may Command (ELEX-5043), Washington, DC 20360 by using the self-addressed Standardization Document be of use in improving this document should be addressed to: Comnander, Naval Electro
4、nic Systems Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i SECTION 1. Paragraph 1.1 SECTION 2. Paragraph 2.1 SECTION 3. Paragraph 3.1 3.2 3.3 3.4 3.5 3.6 3
5、.7 3.8 3.9 SECTION 4. Paragraph 4.1 4.1.1 4.1.2 - 4.1.3 4.1.4 SECTION 5. Paragraph 5.1 5.2 5.2.1 5.2.2 5.3 5.3.1 5.3.2 5.3.3 5.3.5 5.3.4 5.3.6 5.3.7 5.3.8 5.3.9 h-STD-2110 . EC) 11 December 1979 CONTENTS SCOPE Scope REFERENCED DOCUMENTS Issues of doclanents DEFINITIONS Marginal quality Approved engi
6、neering/field change Procuring activity Requiring activity ROR controlling documentation Overhaul Repair Restoration Repairable item GENERAL REQUIREMENTS Restoration, overhaul, and repair Marginal quality Restoration Overhaul Repair I m i 1. 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 4 5 5 DETAILED REQUIREMENTS
7、Materials Equipment Modular assemblies Selection of parts and materials ROR process Inspection Disassembly Testing Fault isolation Parts replacement Cleaning, bonding, and finishes Reassembly Identification and marking Packaging 5 5 7 7 7 7 7 9 9 9 9 12 iii Provided by IHSNot for ResaleNo reproducti
8、on or networking permitted without license from IHS-,-,-0083810 4 CONTENTS (Continued) 5.4 Workmanship 5.5.1 Test data record sheet 5.5 Documentation 5.5.2 Repair dacunentation file 5-6 Calibration - SECTION 6. NOTES Paragraph 6.1 Intended use 63 Data requirements FIGURE 1 ROR flow chart 2 Swrple te
9、st data record sheet TABLE I Overhaul cosmetics decision matrix iv Page 12 12 12 12 12 15 15 15 8 13 6 . : Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.m-srn-zno (EC) 11 December 1979 1. SCOPE 1.1 Sc0 e. This standard covers the general requireme
10、nts for the Restoration, Overhaul, and Repair$h) of electronic equipment and those aspects of the maintenance processes which are applicable to electronic equipment. It establishes uniform standards and procedures to be used in the ROR process, for example, receipt and evaluation, maintenance proced
11、ures, selection and use of parts and material, identification and marking of equipments, and pre- servation and packing for shipment, 2. REFERENCED DOCUMENTS 2.1 Issue of documents. The following documents of the issue in effect on date of invita- tion for bids or request for proposal form a part of
12、 this standard to the extent specified herein. SPECIFICATIONS FEDERAL L-P-387 MILITARY MIL-1-631 MIL-“3171 MIL-C-5541 MIL-A-8625 MIL-P-15024 MIL-E-16400 MIL-E-17555 MIL-C-45662 MIL-1-46058 STANDARDS MILITARY MIL-STD-275 MIL-STD-454 MIL-STD-480 MIL-STD-681 MIL-STO-965 Plastic Sheet, Laminated, Thermo
13、setting (For Designation Plates) Insulation, Electrical, Synthetic-Resin Composition, Nonrigid And Prevention Of Corrosion On Magnesium Alloy, Processes For Pretreatment Chemical Conversion Coatings On Aluminum And Anodic Coatings, For Aluminum And Alloys Aluminum Alloys Plate, Tags And Bands For Id
14、entification Of Equipment Electronic, Interior Comnunication And Naviga- tion Eauioment. Naval Shio And Shore. General Specification for Electronic And Electrical Equipment, Accessor- ies, And Repair Parts, Packaging And Packing Of Calibration System Requirements Insulating Compound, Electrical (For
15、 Coating Printed Circuit Assemblies) Printed Wiring For Electronic Equipment Standard General Requirements For Electronic Equipment Configuration Control - Engineering Changes, Deviations And Waivers Identification Cooling And Application Of Hookup And Lead Wire Parts Control Program (Copies of spec
16、ifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activi,ty or as directed by the contracting officer). Provided by IHSNot for ResaleNo reproduction or networking permitted without license
17、 from IHS-,-,-MIL-STD-2110 MI W 9797911 0083832 8 MIL-STD-2110 ( EC) 11 December 1979 3. DEFINITIONS module, or assembly is again inducted for Repair, Overhaul, or Restoration. 3.1 Marginal quality. Deteriorated or damaged parts that will fail before the equipment, 3.2 Approved engineering/field cha
18、nge. An approved change of a configuration item, after formal approval and establishment of its configuration identification in accordance with MIL-STD-480. 3.3 Procuring activity. The Government activity that negotiates or contracts for the restoration, overhaul, or repair of a repairable equipment
19、 or module. equipment or module undergoing ROR. It can be an activity delegated by the technical cognizant 3.4 Requiring activity. The Government activity having technical cognizance of the organization which has the authority, responsibility, and accountability for effective execution of the total
20、program including equipment or modules undergoing ROR, Execution of the total program is the planning, programming, budgeting, development, integrated logistics support, procurement, and configuration management. Standards (TRS), technical manuals, or repair specifications and this standard are the
21、ROR controlling documentation. 3.5 ROR controlling documentation. The specific equipment or module Technical Repair 3.6 Overhaul. The process of reconditioning an item to conform to current technical specificatvthe item with a life expectancy equivalent to similarly configured new equip- ment, by re
22、pair or replacement of parts and components that have failed, or are of marginal quality, due to wear, eterioration, or damage so as to preclude a major failure; cosmetic reconditioning; and installation of all approved engineering or field changes. repair or *ement of parts or components that have
23、failed or are of marginal quality, due to wear, deterioration, or damage. 3.7 Re air. The process of returning an unserviceable item to operational status by 3.8 Restoration. The process of upgrading an item to conform to the current technical specifications to assure specified operational capabilit
24、y and the restoration of the equip- ments physical appearance to manufacturers original condition. It includes the repair or replacement of parts and components that have failed, or are of marginal quality, due to wear, deterioration, or damage; full cosmetic reconditioning, and mandatory installati
25、on of all approved engineering or field changes. economical-a serviceable condition through repair procedures performed by a Government or commercial overhaul facility. 3.9 Re airable item. An item of durable nature which, when unserviceable, normally can be 4. GENERAL REQUIREMENTS repair (see 4.1.2
26、, L.1.3, and 4.1.4 , as identified by the procuring activity, required to 4.1 Restoration, overhaul, and repair. The ROR activity shall perform the level of return the repairable equipment or !odule to a ready for issue (RFI) condition from a non-ready for issue (NRFI) condition. 4.1.1 Marginal qual
27、it , The following criteria shall be used in determining if a part should be re-ed because it is of marginal quality: a. Wiring. Pinched, broken, charred, missing, or deteriorated wires, and wires with insulation that is broken, cracked, frayed, or burned shall be replaced. Replaced wires shall be r
28、outed identically to the original design. All excess or unauthorized wiring shall be removed. b. Cables. Cable assemblies and wire harnesses containina wires that are deteriorat- I ed, brittle, or broken shall be repaired or replaced. Replaced wires shall not be run external to cable assemblies or w
29、ire harnesses. Molded external cables that contain broken or spliced wires, or with insulation that is cracked, shall be replaced in its entirety. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-C. d. e. f. 9. h. i. j. k. 1. m. n. O. z-STD-2110( EC
30、) 11 December 1979 Connectors and receptacles. Connectors and receptacles with danaged shells, bent, broken or missing pins, or with phenolic inserts that are cracked, broken, or carbonized shall be replaced. Coaxial connectors with worn plating, worn or damaged pin inserts, or poor electrical conne
31、ction, shall be replaced. All pins and pin inserts shall be cleaned. Capacitors. All capacitors that are chipped, cracked, have damaged shells, broken connectors, or show signs of overheating (bulging, wax or oil leaks) shall be replaced. Porcelain terminals of capacitors with cracks or bre,aks shal
32、l be replaced. Variable capacitors that do not operate freely throughout their tuning range or with damaged rotor/stator plates shall be replaced. Transformer, chokes, coils, and pulse forming networks. Items with broken connectors or pigtails or showing signs of physical damage or overheating with
33、breaks or cracks are to be replaced. (bulging, leaking wax, oil, or tar) shall be replaced. Porcelain terminals Relays. Relays with loose or broken connectors, contact springs, or points, misaligned or improper contact spacing, pitted, bent, burned contact points, loose or missing relay clasps or co
34、vers, shall be repaired or replaced. Relay field coils that show signs of overheating may cause replacement of the entire placed. relay. Hermetically sealed relays that do not function properly shall be re- Relay and tube sockets. All sockets that are carbonized, burned, loose or Loose or missing-sh
35、ields or clamps shall be repaired or replaced. cracked, or contain deteriorated or broken connectors, shall be replaced. Rotary switches. Rotary switches with broken or cracked wafers, loose or broken contact members, improper mating of contact members, burned or pitted contact members, or improper
36、switching action, shall be replaced. All switch contact members (wipers and stationary contacts) shall be cleaned with an appropriate Switches and circuit breakers. Sealed toggle switches and circuit breakers solvent. broken, burned, or with damaged connections, or which indicate signs of improper s
37、witching action, shall be replaced. Open toggle switches (selector switches) with burned, pitted,or damaged contact points shall be repaired by burnishing All contact points of unsealed toggle switches shall be cleaned with an appro- or replacement of individual element, or replaced in its entirety,
38、 -as required. priate solvent. All reset, bypass, and interlock switches that indicate signs Resistors. Fixed resistors that are cracked, chipped, discolored, bulged or of improper operation shall be replaced. blistered due to the overheating, or with broken connections or pigtails, shall be replace
39、d. Enclosed or sealed variable resistors (rheostats and potentiometers) operating with rough or binding action of the control shaft, are causes for replace- ment. All open-case, wire-wound rheostats and potentiometers shall be inspected to ensure that the wiper arm contact presses firmly against the
40、 resistance wind- winding shall be burnished or cleaned with an appropriate solvent. ings throughout the entire range, Damaged wiper arm contact or open/damage Electron tubes. All electron tubes with loose, broken or cracked envelopes, bases or pins, broken plate, grid, or high voltage caps, shall b
41、e replaced. Cathode-ray tubes with damaged screens or burned spots 0.4763 centimeters (cm) (0.1875(3/16) in) or more in diameter, shall be replaced. Bent pins shall be straightened. Fuse and fuseholders. All improper rated fuses shall be replaced. All cracked or broken fuseholders and broken connect
42、ors shall be replaced. Holders with only replaced as individual items. Missing or deteriorated boots shall be replaced. smalT surface chips need not be replaced. Broken fuseholder caps shall be Semiconductor devices. All semiconductors that are discolored, cracked, chipped, have loose or broken pigt
43、ails, or show any other sign of mechanical or electrical deterioration, shall be replaced. Indicator lamps and lamp sockets. All improper lamps shall be replaced. All cracked or broken lamp sockets and broken connectors shall be replaced. All lenses shall be cleaned or replaced if missing. Missing o
44、r deteriorated boots Meters. All damaged hermetically sealed meters shall be replaced. Cracked, shall be replaced. broken, or missing meter glasses, damaged or frozen meter movements or needles, or illegible index or scale markings, shall be replaced as individual items on meters not hermetically se
45、aled whenever practical. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IIL-STD-2110( EC) 11 December 1979 P. q. r. S. t. U. V. W. X. Y. Terminal board and bus bars. Broken, burned, or cracked terminal boards shall be replaced. Terminal boards tha
46、t are stained or discolored but conform to all mechanical and electrical tests shall not be replaced merely for appearances or replaced. Marking of boards and bus bars shall be in accordance with terminal sake. Loose terminal boards and corroded or damaged bus bars shall be repaired Test point jacks
47、 and coaxial test points. Cracked, broken, burned, or deteriorat- strip and board marking specified in 5.3.8.7. TR and ATR tube. Inspect the mounting surfaces of transmit/receive (TR) and ed test points and damaged coaxial test points, shall be replaced. Check to see that the mounting screws are cle
48、an and that the screw threads are antitransmit/receive (ATR) tubes for foreign matter and mechanical damage. undamaged. Tubes shall fit snug against the waveguide mounting places. Check for signs of cloudiness and indications of burning or discoloration. These conditions indicate a defective unit an
49、d the tube shall be replaced. Check to see that the keep-alive electrode in the TR box is clean. Klystron and.magnetron tubes. Klystron and magnetron tubes shall be subjected to thorough inspection prior to disposal or turn-in. These tubes shall be inspected to determine their serviceability for reuse. Motors, blowers, and fans. All motors, blowers, and fans shall be disassembled, cleaned, and inspected for damaged armatures, fields, hou
