Operation Manual

139
User Manual
problems with your chart plotter, the extended auto-test should help determine the
problem. Make sure the chart plotter is turned Off. While pressing and holding any
other key, turn the chart plotter On. A new menu will appear on the display:
Software name
and version
NT Software
Library version
and date
XXXX V. x.yy
NTSL V.x.yy.zz R [gg/mm/yyy]
Modem Test
Softwarename
andversion
NTSoftware
Libraryversion
anddate
XXXXV.x.yy
NTSLV.x.yy.zzR[gg/mm/yyy]
ModemTest
Fig. 7.6 - System Test
Use the cursor key to select the preferred test: this will display in reverse
video and with the relative menu window. To choice the test press 'ENTER'. To
exit from any submenu press 'CLEAR'. To exit from the System Test turn Off the
chart plotter.
7.6.1 RAM MENU
This test verifies the integrity of the memories and if preferred during this
test all the internal memory can be erased and the default setting restored.


 RAM Test
To verify the integrity of the RAM. If on the screen the message "ERROR"
appears, the RAM is physically damaged.


 RAM Clear
To clear internal memory. If the chart plotter exhibits unusual behavior, or appears
to be malfunctioning, it may be possible to correct the problem by clearing RAM.
This operation will erase all Marks, Events, Routes, stored track plots and desti-
nations. It will also return all selections (Input Data Format, Autopilot selection,
etc.) to original default values. To confirm to clear RAM press 'ENTER' again
(but if at this time you do not wish to clear RAM press 'CLEAR').
7.6.2 DIM MENU
To select the preferred value for contrast and backlight.


 Contrast
Each time you pressed the cursor key to right, the screen will decrease brightness,