MIL-DTL-24784/12B(SH)
h.
Inability to initially start or initially operate equipment or accessories.
i.
Inability to keep equipment or accessories running or operating.
j.
Inability to stop, arrest or de-energize equipment or accessories.
k.
Inability to restart equipment or accessories once stopped or de-energized.
l.
Inability to develop rated power, or output.
m.
Circuit faults (open or closed circuits).
n.
Faulty or off-design performance or circuit elements, readout equipment or instrumentation.
o.
Malfunction or nonfunction of safety devices.
p.
Vibration.
q.
Bent or bowed rotating elements.
r.
Damaged or broken gear teeth or mechanical or electrical interfaces.
3.6.6.2 Troubleshooting procedures. Troubleshooting procedures shall be directly related to,
and support the troubleshooting diagrams. Troubleshooting information shall be developed to
guide a technician in the logical order of isolating a fault. This information shall direct the
technician to observe meters, fuses, circuit breakers, valves, built-in test equipment, and other
available indications showing the presence of trouble. The analysis of normal indications in
relation to faulty indications shall be stressed. This information may be in tabular, illustrative, or
narrative format, whichever lends to faster troubleshooting. Test programs shall be developed for
digital devices when the method is the most practical method of troubleshooting logic.
3.6.6.3 Troubleshooting guides. Troubleshooting guides in the form of charts shall be included
to enable the technician to quickly identify (in the manual) the trouble or symptoms along with the
immediate action to take, the probable cause, and the concurrent follow-on corrective action or
remedy. Trouble analysis or troubleshooting charts should resemble figure 12-6 herein and be
included as tables in this chapter. Troubleshooting analysis charts shall be by a list of same. When
diagrams included elsewhere in the manual are useful troubleshooting tools or aids, they shall be
cross-referenced in the pertinent column of the applicable troubleshooting charts; to this end, the
following shall be cross-referenced:
a.
Mechanical schematic diagram.
b.
Wiring or signal tracing diagrams.
c.
Piping diagrams.
d.
Control diagrams.
e.
Power distribution diagrams.
f.
When specified in the TMCR (see 6.2), maintenance schematic diagram.
3.6.6.4 Integrated circuitry packages and nonrepairable assemblies. When integrated circuit
packaging techniques, such as Dual In-Line packages, are utilized, the level of detail on the logic
diagrams may be restricted to that necessary to isolate problems to either a specific integrated
circuit package or if the maintenance concept so dictates, to a specific nonrepairable assembly,
providing there is sufficient detail to understand the process of troubleshooting.
3.6.6.5 Assemblies and subassemblies, modules, standard electronic modules, designated
nonrepairable. Logic diagrams, functional information, hardware and test data shall
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