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Percent Oxygen Analyzer Operation 4
4-9
Teledyne Analytical Instruments
4.3.5 System Self-Diagnostic Test
The Model 3000PA has a built-in self-diagnostic testing routine. Pre-
programmed signals are sent through the power supply, output board and
sensor circuit. The return signal is analyzed, and at the end of the test the
status of each function is displayed on the screen, either as OK or as a
number between 1 and 3. (See System Self Diagnostic Test in chapter 5 for
number code.)
The self diagnostics are run automatically by the analyzer whenever the
instrument is turned on, but the test can also be run by the operator at will.
To initiate a self diagnostic test during operation:
Press the
System
button to start the
System
function.
Contrast Auto—Cal
PSWD Logout More
Use the < > arrow keys to blink More, then press
Enter
.
Version Self—Test
Cell Output: ### µA
Use the < > arrow keys again to move the blinking to the Self–Test
function. The screen will follow the running of the diagnostic.
RUNNING DIAGNOSTIC
Testing Preamp — 83
During preamp testing there is a countdown in the lower right corner of
the screen. When the testing is complete, the results are displayed.
Power: OK Analog: OK
Preamp: 3
The module is functioning properly if it is followed by OK. A number
indicates a problem in a specific area of the instrument. Refer to Chapter 5
Maintenance and Troubleshooting for number-code information. The results
screen alternates for a time with:
Press Any Key
To Continue...
Then the analyzer returns to the initial System screen.
4.3.6 Version Screen
Move the < > arrow key to More and press
Enter
. With Version
blinking, press
Enter
. The screen displays the manufacturer, model, and
software version information.
Contrast Function is
DISABLED
(Refer to Section 1.6)