Navy Electricity and Electronics Training Series - Historic Naval ...

More documents

Recommendations

Info

Upon satisfactory completion of a 2M training course, a technician will be CERTIFIED to performrepairs. The CERTIFICATION is issued at the level at which the technician qualifies and specifies whattype of repairs the technician is permitted to perform. The two levels of qualification for technicians areMINIATURE COMPONENT REPAIR and MICROMINIATURE COMPONENT REPAIR. Miniaturecomponent repair is limited to discrete components and single- and double-sided printed circuit boards,including removal and installation of most integrated circuit devices. Microminiature component repairconsists of repairs to highly complex, densely packaged, multilayer printed circuit boards. Sophisticatedrepair equipment is used that may include a binocular microscope.To ensure that a technician is maintaining the required qualification level, periodic evaluations areconducted. By inspecting and evaluating the technician's work, certification teams ensure that theminimum standards for the technician's level of qualification are met. If the standards are met, thetechnician is recertified; if not, the certification is withheld pending retraining and requalification. Thisportion of the program ensures the high-quality, high-reliability repairs needed to meet operationalrequirements.Q1. Training requirements for (2M) repair personnel were developed under guidelines established bywhat organization?Q2. What agencies provide training, tools, equipment, and certification of the 2M system?Q3. To perform microminiature component repair, a 2M technician must be currently certified inwhat area?Q4. Multilayer printed circuit board repair is the responsibility of what 2M repair technician?LEVELS OF MAINTENANCEEffective maintenance and repair of microelectronic devices require one of three levels ofmaintenance. Level-of-repair designations called SOURCE, MAINTENANCE, and RECOVERABILITYCODES (SM&R) have been developed and are assigned by the Chief of Naval Material. These codes areD for DEPOT LEVEL, I for INTERMEDIATE LEVEL, and O for ORGANIZATIONAL LEVEL.DEPOT-LEVEL MAINTENANCE.SM&R Code D maintenance is the responsibility of maintenance activities designated by the systemscommand (NAVSEA, NAVAIR, NAVELEX). This code augments stocks of serviceable material. It alsosupports codes I and O activities by providing more extensive shop facilities and equipment and morehighly skilled technicians. Code D maintenance includes repair, modification, alteration, modernization,and overhaul as well as reclamation or reconstruction of parts, assemblies, subassemblies, andcomponents. Finally, it includes emergency manufacture of nonavailable parts. Code D maintenance alsoprovides technical assistance to user activities and to code I maintenance organizations. Code Dmaintenance is performed in shops, located in shipyards and shore-based facilities, including contractormaintenance organizations.INTERMEDIATE-LEVEL MAINTENANCESM&R code I maintenance, performed at mobile shops, tenders or shore-based repair facilities(SIMAS) provides direct support to user organizations. Code I maintenance includes calibration, repair,or replacement of damaged or unserviceable parts, components, or assemblies, and emergencymanufacture of nonavailable parts. It also provides technical assistance to ships and stations.2-2
ORGANIZATIONAL-LEVEL MAINTENANCESM&R code O maintenance is the responsibility of the activity who owns the equipment. Code Omaintenance consists of inspecting, servicing, lubricating, adjusting, and replacing parts, minorassemblies, and subassemblies.An INTEGRATED LOGISTICS SUPPORT PLAN (ILSP) determines the maintenance level forelectronic assemblies, modules, and boards for each equipment assigned to an activity. The ILSP codesthe items according to the normal maintenance capabilities of that activity. This results in two additionalrepair-level categories - NORMAL and EMERGENCY.Normal RepairsGenerally, 2M repairs are performed at the level set forth in the maintenance plan and specified bythe appropriate SM&R coding for each board or module. Therefore, normal repairs include all repairsexcept organizational-level repair of D- and I-coded items and intermediate-level repair of D-coded items.Emergent/Emergency RepairsIn the NAVSEA 2M Electronic Repair Program, emergent/emergency repairs are those arisingunexpectedly. They may require prompt repair action to restore a system or piece of equipment tooperating condition where normal repairs are not authorized. These Code O repairs on boards or modulesare normally SM&R-coded for Code D repairs. Emergent/emergency 2M repairs may be performed onlyto meet an urgent operational commitment as directed by the operational commander.SOURCE, MAINTENANCE, AND RECOVERABILITY (SM&R) CODESThe Allowance Parts List (APL) is a technical document prepared by the Navy for specificequipment/system support. This document lists the repair parts requirements for a ship having the exactequipment/component. To determine the availability of repair parts, the 2M technician must be familiarwith these documents. SM&R codes, found in APLs, determine where repair parts can be obtained, whois authorized to make the repair, and at what maintenance level the item may be recovered or condemned.Q5. What are the three levels of maintenance?Q6. Maintenance performed by the user activity is what maintenance level?TEST EQUIPMENTMicroelectronic developments have had a great impact on the test equipment, tools, and facilitiesnecessary to maintain systems using this technology. This section discusses, in general terms, theimportance of these developments.Early electronic systems could be completely checked-out with general-purpose electronic testequipment (GPETE), such as multimeters, oscilloscopes, and signal generators. Using this equipment toindividually test the microelectronics components in one of today's very complex electronic systemswould be extremely difficult if not impossible. Therefore, improvements in system testing procedureshave been necessary.2-3
Page 1 and 2:
NONRESIDENTTRAININGCOURSESEPTEMBER
Page 3 and 4:
PREFACEBy enrolling in this self-st
Page 5:
TABLE OF CONTENTSCHAPTERPAGE1. Micr
Page 8 and 9:
Module 11, Microwave Principles, ex
Page 10 and 11:
INSTRUCTIONS FOR TAKING THE COURSEA
Page 12 and 13:
THIS PAGE LEFT BLANK INTENTIONALLY.
Page 15 and 16:
CHAPTER 1MICROELECTRONICSLEARNING O
Page 17 and 18:
VACUUM-TUBE EQUIPMENTVacuum tubes w
Page 19 and 20:
SOLID-STATE DEVICESNow would be a g
Page 21 and 22: FILM INTEGRATED CIRCUITS are broken
Page 23 and 24: Development of a microelectronic de
Page 25 and 26: Figure 1-9.—Crystal furnace.The c
Page 27 and 28: Figure 1-12.—Planar-diffused tran
Page 29 and 30: Figure 1-14.—Vacuum evaporation o
Page 31 and 32: Figure 1-17.—Cathode-sputtering m
Page 33 and 34: Q23. How do the two types of monoli
Page 35 and 36: Figure 1-21A.—TO-5 mounting PLUG-
Page 37 and 38: Dual Inline PackageThe dual inline
Page 39 and 40: wafer, as shown in figure 1-27. Thi
Page 41 and 42: Figure 1-29.—J-K flip-flop discre
Page 43 and 44: Figure 1-31.—Lead numbering for a
Page 45 and 46: Figure 1-34.—Manufacturer's Data
Page 47: comparison to the distance between
Page 50 and 51: LEVEL III.—Drawers or pull-out ch
Page 52 and 53: Conductors located several layers b
Page 54 and 55: Figure 1-43A.—Evolution of modula
Page 56 and 57: ENVIRONMENTAL CONSIDERATIONSThe env
Page 58 and 59: SUMMARYThis topic has presented inf
Page 60 and 61: Rapid development has resulted in i
Page 62 and 63: Large DIPs are being used to packag
Page 64 and 65: MINIATURE ELECTRONICS are card asse
Page 66 and 67: Three methods of interconnecting ci
Page 68 and 69: ANSWERS TO QUESTIONS Q1. THROUGH Q5
Page 70 and 71: A43. Conventional printed circuit b
Page 74 and 75: One such improvement in system test
Page 76 and 77: those that should be observed when
Page 78 and 79: Figure 2-2.—Low voltage Handpiece
Page 80 and 81: Figure 2-6.—Rotary-drive machine
Page 82 and 83: Figure 2-9.—Pana Vise.HAND TOOLSF
Page 84 and 85: Figure 2-10a.—Pliers.TweezersView
Page 86 and 87: Even though all the items are not u
Page 88 and 89: Figure 2-14.—Stereoscopic zoom mi
Page 90 and 91: other than eutectic, go through a p
Page 92 and 93: A1. Chief of Naval Operations (CNO)
Page 94 and 95: CAUTIONTHIS SECTION IS NOT, IN ANY
Page 96 and 97: The coating material can best be id
Page 98 and 99: Figure 3-3.—Rotary tool conformal
Page 100 and 101: Figure 3-4A.—Eyelets (interfacial
Page 102 and 103: Figure 3-5B.—Clinched leads. SEMI
Page 104 and 105: Figure 3-8A.—Terminals. PIN AND T
Page 106 and 107: Figure 3-8E.—Terminals. SOLDER CU
Page 108 and 109: Figure 3-10.—Solder wicking.This
Page 110 and 111: Figure 3-12B.—Motorized vacuum/pr
Page 112 and 113: INSTALLATION AND SOLDERING OF PRINT
Page 114 and 115: Figure 3-15.—Component arrangemen
Page 116 and 117: Figure 3-16.—Thermal shunt.APPLIC
Page 118 and 119: Removal of Plug-In DIPsTo remove pl
Page 120 and 121: Figure 3-19.—TO mounting techniqu
Page 122 and 123:
Figure 3-21.—Flat pack in protect
Page 124 and 125:
Figure 3-23.—Pcb conductor damage
Page 126 and 127:
REPAIRING DELAMINATED CONDUCTORS.
Page 128 and 129:
5. The repair is completed using th
Page 130 and 131:
SAFETYSafety is a subject of utmost
Page 132 and 133:
OBJECT OR PROCESSWORK SURFACESFLOOR
Page 134 and 135:
8. When moving an ESDS device or as
Page 136 and 137:
Power ToolsHazards associated with
Page 138 and 139:
dispensers will prevent many accide
Page 140 and 141:
A GOOD SOLDER JOINT is bright and s
Page 142 and 143:
ANSWERS TO QUESTIONS Q1. THROUGH Q3
Page 145 and 146:
APPENDIX IGLOSSARYALLOWANCE PARTS L
Page 147 and 148:
MODULAR PACKAGING—Circuit assembl
Page 149:
APPENDIX IIREFERENCE LISTCHAPTER ON
Page 152 and 153:
Microelectronics—Continuedpackagi
Page 155:
Assignment QuestionsInformation: Th
Page 158 and 159:
1-7. Which of the following charact
Page 160 and 161:
1-24. Vacuum evaporation and cathod
Page 162 and 163:
___________________________________
Page 164 and 165:
1-49. Ground planes and shielding a
Page 166 and 167:
1-65. Which of the following types
Page 168 and 169:
ASSIGNMENT 2Textbook assignment: Ch
Page 170 and 171:
2-20. Turret, fork, and hook termin
Page 172 and 173:
2-39. Component leads may be clippe
Page 174 and 175:
2-52. To ensure a good mechanical b
show all

Navy Electricity and Electronics Training Series - Historic Naval ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?