Maintenance and Troubleshooting
Opto22 Problems
Thermo Fisher Scientific Micro-Tech 9101/9201 Reference Manual, Rev J 4-17
Here is the procedure to follow to test the Opto22 input module.
1. Follow steps 1–2 in the “Navigating to the Test Output Screen”
section to display the “Digital Input Test” screen shown below.
The screen indicates input status—that is, 0 = open, 1= closed. The
display reads right to left, that is from Inputs 1 through to Input 5. If
your Micro-Tech is equipped with an optional digital input/output board,
press the Next button to display Inputs 6–21. In addition, note that
Inputs 1 and 2 are reserved for the speed input.
2. Voltage input. Measure source voltage input.
If GOOD—Proceed to “View Opto LED” (see step 3).
If BAD—Apply appropriate voltage to input terminals.
Test Procedure
for the Input
Module
Dig input test
Slot #0 00111
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