ARTEX AIRCRAFT SUPPLIES ME406, Description, Operation, Installation And Maintenance Manual, Page: 55 / 68

ARTEX AIRCRAFT SUPPLIES, INC. 570-1600
SYMPTOM LIKELY CAUSE ACTION
7 Flash Error after
performing Self-Test ELT battery counter has
accumulated >1 hr operating
time. Battery may still power
ELT, but must be replaced to
meet FAA requirements. May
also indicate damage to the
battery circuit.
1) Replace battery.
Remote Switch LED
always on (steady) Wiring error or frayed wires
shorting out pins on back of
Remote Switch
1) Verify wiring.
2) Verify integrity of all crimp or solder
connections on harness.
ELT will not turn
‘OFF’ Battery too low to support 406
burst – causes circuit to reset.
1) Remove battery pack to disable.
5)
Replace battery pack.
Table 3 – Troubleshooting Guide (continued)
5.1
Special Precautions for Electro-Static Discharges (ESD)
Artex ELTs are tested to make sure that the complete ELT is safe from damage from most ESD
events. However, when the battery pack is being replaced, some components are more
vulnerable to damage from ESD.
ESD is defined as any discharge of static electricity. The spark generated from walking across a
carpet and touching a door knob is an example of an ESD event. The level of ESD discharge
that can damage a circuit is much smaller and not normally felt. To protect the circuits of the
ELT when you are replacing the battery please do the following:
1) Only disassemble the ELT on a workbench that has been electrically grounded. This
may be a metal bench with a ground wire tied to earth ground or a workbench with a
special ‘ESD’ mat connected to earth ground.
2) Touch the ground surface momentarily to ‘discharge’ yourself before touching the ELT
or battery. During the battery replacement process, frequently contact with the
grounded surface to minimize static buildup. Electronics workers wear special body
contact straps with a grounding cable. If available, one should be used.
3) Low humidity in the air allows static charges to build up easier than when the
humidity is high. On days when static sparks are frequently experienced and no
facilities are available (ground strap, grounded work bench, etc.) do not attempt to
replace the battery.
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