Comark N5001 Auditor General Guide - Manual (Page 3)

Please telephone the Comark Technical Services on 0844 815 6599
8. Will not turn ON
It is possible for the screen contrast to reset to zero in which case, the instrument could be
functioning but the screen will be blank. To check to see if the instrument is running press the
backlight key. Even if the backlight has been set to zero seconds, it will still blink momentarily. If it
blinks increase the contrast by holding the backlight key down and pressing the UP arrow key.
If the backlight does not operate check and change the battery if required.
Perform a ‘soft reset’ of the instrument. (Remove one of the cells from the battery compartment and
wait for a few seconds before replacing. If the instrument is functioning the screen will show that
connection to the PC is required. It is advisable to connect the Auditor to the PC at the earliest
possible time to ensure correct operation although it is possible to manually check the date and time
settings are correct.)
9.
Blank screen
Check that backlight is working, see Step 8.
Check/Change the battery.
If this does not work try a ‘hard reset’. Remove one of the cells from the back of the instrument,
press and hold both the UP and DOWN arrow keys together then replace the cell. If the Auditor
functions, it will need to be reconnected to the PC to complete the reset. If the problem occurs again
return the instrument to Comark for investigation.
10.
The display is reversed or corrupted
In the unlikely event that the display is corrupted with faulty or missing characters it should
automatically correct at the next refresh. The display refreshes every few seconds.
If it does not correct at the next refresh perform a ‘soft reset’, see Step 8.
If that does not work then connect the Auditor to the PC and download the readings before removing
the battery and performing a ‘hard reset’, see Step 9.
If the display still does not reset contact Comark to arrange to send the instrument back for repair .