Troubleshooting
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29. Troubleshooting
Visit www.cirris.com/learning-center for articles on troubleshooting. If you need additional help, contact Cirris Technical
Support at techsupport@cirris.com or 1-800-441-9910 ext 666.
■ A high percentage of tests fail
Too many tests failing could be caused by several possibilities.
● Error in the Learned device: If a cable with mistakes or defects is used as the primary cable to create the test pro-
gram, then all good cables will fail because they are tested using bad test instructions.
● Fixturing: Failures can occur if the xturing is not built and connected correctly. See the Fixturing section of this
manual for help (page 12).
● Tester Interface/Unit: A problem with the tester may occur on the tester interface (the part of the tester visible
to the user), or within the tester unit (the wiring and other pieces contained inside the chassis). Problems with the
tester interface might be repairable by the user while problems with the tester unit should be evaluated by the
tester manufacturer. If you suspect a problem with your tester unit, verify your tester is calibrated. You can purchase
a verication kit from Cirris. If necessary, you may have to send the tester to Cirris for repair.
● High Voltage – 4250 only: To troubleshoot a high voltage failure such as a dielectric failure, remove the DUT and
Learn a new test program with the same high voltage settings. The tester may display a warning indicating no
connections are found. Proceed to perform the Learn and test. If the same dielectric failure occurs, the problem is
either with the test xture or the tester interface. If possible, try testing the same device with dierent xturing. If the
problem still occurs, the error is the most likely source of the problem.
● Environment: Occasionally failures can be caused by factors in the environment such as humidity and materials. For
example:
○ Humidity: Humidity related IR failures will usually report as an IR or HV leakage failure. High humidity can allow
moisture paths for small amounts of current to ow between unintended connections.
○ Materials: Consider the materials selected, the type of environment you operate in, and the number of cycles the
xturing can endure. If there is any question of suitability in materials, try looking at the manufacturer’s specica-
tions.
■ No Sound
The tester uses sound prompts to provide feedback to the operator. If the tester is not making any sound, check the tester
volume.
1. From the Main Menu, press System Settings.
2. Press the Volume button.
3. If the volume is set to 0, the tester will not make any sounds. Enter a number between 1-100.
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