Operation Manual

136 User Manual
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.
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 RAM Test
To verify the integrity of the RAM. If on the screen the message "ERROR" appears,
the RAM is physically damaged.
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 RAM Clear
To clear internal memory. If the chart plotter exhibits unusual behaviour, 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 destinations.
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.
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 Contrast
Each time you pressed the cursor key to right, the screen will decrease brightness, instead
of to left it will increase brightness.
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 Backlight
To set the backlight. Operates in similar mode as Contrast.