COMDTINST 4790.2B
(c) The MTR configuration is not static. As new techniques for repair are available,
they are evaluated and institutionalized into the MTR.
(2) 2M involves rework and repair work including damaged EAs, and replacement of
discrete components and integrated circuits (ICs).
(a) The 2M Program provides the repair equipment, tools, techniques and training
required for certified technicians to perform highly reliable, high quality repairs
on complex EAs. 2M is an integral part of the Navy's Progressive Repair
initiative. The 2M Program supports electronic repair at the organizational (O)
and intermediate (I) maintenance levels. The use of 2M applies to all electronic
equipment following the direction of Maintenance Policy for Naval Ships,
OPNAVINST 4700.7 (series), Naval Aviation Maintenance Program
OPNAVINSTs 4790.2 (series), and Maintenance of Surface Ship Electronic
Equipment OPNAVINST 4790.13 (series). 2M electronic repair saves money by
avoiding potential maintenance costs associated with the turn-in of NFE EAs to
the depots, repairing EAs at the lowest possible level, and results in an overall
improvement to fleet readiness through increased self-sustainability of the repair
site itself. 2M is divided into two distinct capability levels.
(1) Miniature Electronic Repair covers the repair of single and double-sided EAs
focusing on discrete and multilead, through hole components. Miniature
repair includes removal and replacement of these components, removal and
re-application of conformal coatings, wiring and soldering of various
terminals and connectors, removal and replacement of damaged conductors
and printed circuit board laminate. Miniature repair also covers electrostatic
discharge (ESD) familiarization and handling procedures to minimize ESD
risks to the EAs.
(2) Microminiature Electronic Repair is more technically demanding than the
miniature level of repair described above. Microminiature repair involves
high-density component packaging, multilayer conductor and laminate repair,
flex-print repair, edge-lighted panel repair, welded lead repair and surface
mounted technology (SMT) repair. Because microminiature repair is an
advanced capability when compared to miniature repair, miniature training is
a prerequisite for microminiature training.
(3) MTR Workcenter. A fully outfitted MTR workcenter consists of the following
equipment:
(a) Electrical/Electronic Equipment Test Station capable of graphically displaying the
relationship between voltage and current across and through an electronic
component. The test station software guides the technician through the diagnostic
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