Page 17 of 28 Sym B
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Dwg. 56201-2
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Failure Modes
4.2
The Indexer Computer and Lift Transducer are not field repairable. If the operation of the
system is in doubt, apply power to the system. If the system successfully completes the
Power-On Self-Test, then the system is in operation and can be flight checked.
If the Power-On Self-Test is unsuccessful, hold buttons A and B for two seconds while power
is still supplied. The display will illuminate all reference marker segments and then will
illuminate a particular segment of the Indexer Computer display. Make note of these
illuminated segments, as this will aid in diagnosing the problem.
Visit
for additional troubleshooting actions.
When using the website troubleshooting guide, have the following information on hand:
1. Unit Part Number
2. Unit Serial Number
3. Unit Software Revision
4. Fault Code (which LEDs are illuminated
on the Indexer)
Label on Indexer Computer
(Typical)
The Part Number, Serial Number, and Software Revision can be found on the nameplate on
the lower surface of the Indexer Computer.
Instructions for Continued Airworthiness
4.3
Perform the functional ground check in accordance with paragraph 2.7 at each annual
inspection or anytime the SCc Indexer Computer or Lift Transducer has been disconnected.
Following the Power-On self test, the single red LED will
continue to blink at 1 Hz until the system has been calibrated in
flight.
NOTE
If the Lift Transducer has been replaced or if the calibration of the system is in doubt, perform
the calibration procedure in accordance with paragraph 3.3.
The “
Transducer Location Verification Flight
” procedure of
paragraph 3.2 is only to be performed for the first transducer
installation. When paragraph 3.2 has been completed no
further transducer location adjustments can be performed.
NOTE
