ACR&Artex C406-N - Manual (Page 50)

ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-N (453-5060), C406-N HM (453-5061)
25-62-13
Page 50 of 109
MAR 1/13
TASK 25-62-13-810-801
3. Fault Isolation
SUBTASK 25-62-13-810-001
A. Self-Test Error Troubleshooting Guidelines
(1) Table 6 describes the ELT self-test LED error codes (i.e., flash codes), their probable causes,
and possible solutions. The 5-flash error is not present when the ELT is programmed with a
serial user protocol (short message).
NOTE: Upon activation, the LED will display a long single flash, which is normal. Any self-
test error codes will display following this initial flash. Do not confuse the initial flash
with a 1-flash error code. If there are multiple errors, there is a 0.5 to 1.0 second
pause between each error code.
Table 6. ELT Self-Test Error Codes Troubleshooting Guide
CODE PROBABLE CAUSE POSSIBLE SOLUTION
1-Flash
Indicates a G-switch loop open (Pins 12 and 13)
Remote switch harness connector loose or
disconnected at ELT
Check connector and tighten as necessary
ELT connector pins bent or broken
Check condition of connector pins and
repair or replace as necessary
Connector pins 12 and 13 jumper open
(internal to remote switch harness
connector at ELT end)
Repair open jumper
2-Flash
(long/short)
Indicates a programming adapter problem
Jumper missing between Pin 3 and Pin 4
of ELT plug or connection interrupted and
Programming Adapter (PA) not in use
Install jumper or repair connection
PA is used and not programmed
Program PA - See Appendix B -
Programming Adapter Installation and
Operation
PA is used and there is a communications
or wiring error
Repair or replace as necessary
3-Flash
Indicates a 406 MHz transmission problem
Open or short condition on antenna
output or coax cable
Verify the coax cable/antenna is
connected and in good condition
Perform continuity check of center
conductor and shield
Check for a shorted cable
Check for intermittent connection in the
coax cable