Metrohm 746 VA Trace Analyzer - Manual (Page 529)

7 Safety, Errors, Troubleshooting, Diagnosis, GLP
746 VA Trace Analyzer / 747 VA Stand
7-30
Reset with deletion of working storage
Hardware reset and internal software reset with deletion of the working storage.
The instrument is reinitialized. All instrument parameters and the data loaded in the
method and determination storage are retained. The method and determination
loaded in the working storage are cleared and all method parameters are reset to
their default values.
This reset is performed as follows:
1 Start reset
Initiate a reset using one of the 3 methods listed under Normal Reset, then
press the space key several times when the instrument is powering up until
the following screen display appears:
RAM initialization 746
ДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДД
-> contrast = ###
hit any key to confirm contrast
2 Adjust screen contrast
The screen contrast is now continuously varied from completely dark to
extremely light. Press any key as soon as the contrast has reached the
desired value. (If you are not satisfied with the result, you can improve the
contrast setting later on the ”VA TRACE ANALYZER” page.)
3 Run RAM test
Next you are asked whether or not you wish to perform a RAM test. If an
error has been found, it is advisable to press here. If the RAM test is
successful, the following screen display appears:
-> contrast = 108
-> non destructive RAM test: y/n ? y
- running non destructive RAM test
RAM test passed ok
4 Start reset with deletion of working storage
After the RAM test, answer the following three questions with and the
fourth question reset working memory: y/n ? with .
-> reset all memory and hardware setup to default: y/n ? n
-> reset filling and dosing rate of Dosimats: y/n ? n
-> reset storage memory: y/n ? n
-> reset working memory: y/n ? y
5 Testing the beep
The functioning of the beep can be tested by pressing . Press to
continue.