OLS CASY TT - Control Panel Display Issues; Calibration Defective or Lost; Error Message HW-3 a

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Troubleshooting
. Control Panel Display Dark or Light
If the CASY Control Panel display is completely dark or completely light-coloured:
1
Check whether the adjustment wheel on the right side of the CASY Control Panel is out of tune.
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. Calibration Defective or Lost
 If the error message CL-1 is displayed during self test, the instrument has lost its calibration par-
tially or completely (wrong check.sum).
In this case the calibration needs to be re-loaded:
1
Contact your OLS representative.
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. Error Message HW-a
If the error message HW-3a is displayed during selftest, the real time clock of the system is not run-
ning. In this case:
1
Restart the real time clock as described in the operator guide (Set Date and Time in the MAIN MENU
screen).
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Control Panel Display Dark or Light