ANATEL A643, Operator'S Manual, Page: 183 / 222

Anatel A643a - Troubleshooting 183 of 220
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Anatel
Operator Manual
14.4.1 Electronics Tests
The Analyzer’s electronic diagnostics are divided into Voltage, Memory/Alarm and Display/
Print tests.
To conduct a diagnostic test on any of the Anatel A643a’s electronic systems:
1) With the Analyzer’s Diagnostics Menu displayed, specify Electronics and press Enter
to access its options. Each of the Electronics Menu selections offers two diagnostic
options:
2) Press Enter to execute the chosen operation. The results of the test are presented on
the Controller’s display and a printout is generated. Contact Hach Ultra if the Anatel
A643a fails any of these tests.
3) Press Esc twice to return to the Electronics Menu to perform another circuitry test, or
press it three times to return to the Diagnostics Menu .
Fig 14-4 : Electronics Diagnostic Screen
Test Voltages
Voltages Is a pass/fail test which compares the current instrument
voltages to their nominal baseline levels.
Baselines Prints a list of the instrument’s baseline voltage values.
Memory
Test Memory Verifies that the instrument’s RAM is functional.
Display/Print
Display Test Verifies operation of the Analyzer’s and the Controller’s
LCD by darkening all of the pixels in the display.
Printer Test Confirms all characters are printing.