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March 2021
Page 102 of 143
59812-K007 Rev 17
Business Confidential
4.
Compare the Current Contamination Value with the Original Contamination Value after the Detector
has been cleaned. If the Detector is NOT within 20% of the Original Contamination Value after
cleaning it should be replaced as it is at the end of its Service Life.
5.2.4
Control Unit Error
The Control Unit continually checks the data held in memory to ensure that it has not been corrupted. If
an error in the data is identified a Control Unit Error fault will be indicated.
To identify the type of fault on the Control Unit access the Engine Status Screen, see section 3.4.
Figure 154
Engine Status Screen Memory Fault
Identify the fault being indicated, in this case a Control Unit Memory fault.
Alternatively, an inspection of the engine event log, see section 3.6, will show one of the below events:
Control Unit Error
Engine X
RAM
Control Unit Error
Engine X
RTC
Control Unit Error
Engine X
Flash
Having established which Control Unit is in fault the following steps should be followed.
1.
Power down the Control Unit.
2.
Power up the Control Unit.
3.
Check if the memory fault reoccurs.
If the memory fault does not reoccur no further action is required.
If the memory fault reoccurs the Control Unit PCB has failed and should be replaced.
5.2.5
Controller Watchdog
The Control Unit continually checks the operation of the software on the PCB to ensure that it has not
been corrupted or locked up. If an error in the software operation occurs an automatic reset will be
performed to restart the Control Unit operation. If the software has been successfully restarted the
performance of an automatic reset is indicated as a Controller Watchdog.
5.2.5.1
Control Unit software restarted
To identify the type of fault on the Control Unit access the Engine Status Screen, see section 3.4.
Содержание Graviner Mk7
Страница 26: ...March 2021 Page 15 of 143 59812 K007 Rev 17 Business Confidential Figure 10 Detector Head Installation ...
Страница 42: ...March 2021 Page 31 of 143 59812 K007 Rev 17 Business Confidential Figure 29 Wiring Drawing ...
Страница 129: ...March 2021 Page 118 of 143 59812 K007 Rev 17 Business Confidential 6 6 1 CONTROL UNIT Figure 182 Control Unit Spares ...
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