vii
7. MAINTENANCE, TROUBLESHOOTING ......................................................7-1
7.1 Preventive Maintenance...............................................................................................7-1
7.2 Replacement................................................................................................................7-1
7.2.1 Replacement of the battery...............................................................................7-1
7.2.2 Replacement of the fuse...................................................................................7-2
7.2.3 Replacement of the magnetron.........................................................................7-2
7.2.4 Replacement of the synchro belt.......................................................................7-2
7.3 Trackball Maintenance .................................................................................................7-3
7.4 Simple Troubleshooting................................................................................................7-4
7.4.1 General.............................................................................................................7-4
7.4.2 Radar................................................................................................................7-4
7.4.3 Plotter...............................................................................................................7-5
7.4.4 Sounder............................................................................................................7-6
7.5 Diagnostics ..................................................................................................................7-7
7.5.1 Memory I/O test ................................................................................................7-7
7.5.2 Test pattern.....................................................................................................7-10
7.5.3 Keyboard test of the control unit...................................................................... 7-11
7.6 GPS Status Display....................................................................................................7-12
7.7 Clearing Memories.....................................................................................................7-13
7.8 Error Messages..........................................................................................................7-14
APPENDIX ......................................................................................................AP-1
Menu Overview...............................................................................................................AP-1
Geodetic Chart List ....................................................................................................... AP-10
World Time Chart.......................................................................................................... AP-11
Icons............................................................................................................................. AP-12
What is WAAS? ............................................................................................................ AP-13
SPECIFICATIONS........................................................................................... SP-1
INDEX..........................................................................................................Index-1
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