Hach-Lange ORBISPHERE 3650 - Manual (Page 47)

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Section 7 Maintenance and Troubleshooting
7.1 Maintenance
7.1.1 Instrument
If there are problems with the instrument, please contact your local Hach Lange service
representative.
7.1.2 Sensor
For information on sensor maintenance and servicing, please refer to the accompanying
Sensor Manual
.
7.2 Troubleshooting
If your analyzer is behaving strangely (failing to calibrate, giving inappropriate measurement
values, etc.) and you have attempted to rectify the problem by servicing the sensor, but to no
avail, you may wish to use the Troubleshooting menu of the PC WinLog97 program to make
sure that the instrument is configured correctly for your application, and is in good working
order.
The instrument must be connected to your PC and placed in measurement mode to perform
these tests.
7.2.1 Serial test
Normally, the analyzer will inform you of a disconnected RS-232 (serial) link when appropriate.
However, you can confirm a good connection using the Troubleshooting, Serial Link Test by
echoing a test message via the instrument.
7.2.2 Keyboard test
The Troubleshooting, Keyboard Test will reveal whether all the analyzer buttons are
functioning correctly.
Enter text characters in the Text to be sent box, then click
Send
. If the serial link is operating correctly, the exact same
text will be displayed back from the instrument in the Echo
box.
Choose Cancel to exit from this test box.
Press any one of the instrument's buttons (except
the on/off button) for a full second or more.
The appropriate square on-screen should darken
(as illustrated for the
Down Arrow button). Choose
Cancel to exit from this test box.