BendixKing SKYMAP IIIC - Manual (Page 45)

DETAILED OPERATION
Self Test and Initialisation
When the Title Screen is initially displayed, the unit carries out a series of internal check
routines automatically. These are:
1. Verification that the unit has been factory initialised. This consists of a check to see if
there is a special code in NVM. If there is no initialisation code in the NVM a
message saying UNIT NOT INITIALISED will be printed across the centre of the
Screen and the unit will be totally disabled. This is a security feature, safeguarding
against theft of the unit and attempted erasure of your PIN from the NVM. (If your
unit is stolen and the NVM is erased or replaced in an attempt to reset the PIN, the
thief will still not be able to use or sell the unit because these special high security
factory initialisation codes will be missing.)
2. A check for RAM corruption. If RAM has been lost or corrupted due to a severe
‘glitch’ or loss of power in the memory battery a RAM clear will be performed on the
affected areas and Screen 51, Ram Lost Warning Screen, will be displayed (Refer to
APPENDIX B ).
3. A check of the internal Lithium battery voltage. If the internal battery voltage is low,
Screen 52, Internal Battery Warning Screen, will be displayed (Refer to APPENDIX B
).
4. A check to see whether the Automatic Power-On Lock function has been enabled
(see Screen 26 for further details). If it is enabled, Screen 54, Power On Security
PIN Entry Screen, will be displayed after 5 seconds (or if any Key is pressed before
this). If when switched on it is found that three unsuccessful attempts have been
made to enter the Unlock PIN, Screen 55, Lockout Screen, will be displayed (Refer to
APPENDIX B ).
DETAILE
D
OPE
RATION
5. A check to see if a new memory card has been fitted. This involves comparing the
software version number held in NVM with that of the current memory Card. If a
change of card is detected, the integrity of all flight plans will be checked and if any
discrepancies are found Screen 56, Flight Plan Change Warning Screen, will be
displayed (Refer to APPENDIX B ).
6. If the unit is a Skymap IIIC the GPS receiver circuitry will be tested and if any
problems are found, a NO REPLY message will be indicated in the STATUS field of
Screen 3, GPS Status Screen.
If the unit passes all checks 1 to 6 above no warnings will be given
Rev 9 Jul 2006 3-2 Skymap/Tracker IIIC Pilot's Guide