ITC VerifyNow System Platelet Reactivity Test - Manual (Page 77)

Page 73 14439.C 03/2013
Troubleshooting - 10
VerifyNow System User Manual | USA
No. Issue Description Resolution
28
Attention - Signal
saturation
High light transmittance
through the detection
wells.
High light transmittance through the detection wells prevents the instrument from measuring
a change in optical signal.
In these cases, the event may be associated with the blood sample and the following
causes should be investigated:
• The patient being tested has a hematocrit outside of the applicable range. Refer to
the package insert for information on the range.
• An improperly mixed sample was used to run the test.
• The sample was not run within the specified amount of time.
If none of the above can be determined to be the cause, run WQC Level 2 (see Quality
Controls Section 5.2.2) to confirm the integrity of the test device and the reagents. If the
problem continues, call Technical Support.
29
Error – EQC Mask
parameter
This event occurs during
a Failed EQC, and is
logged as Error 29 in the
event log.
This event occurs when the EQC test detects the unfiltered light as not within specifications.
Call Technical Support if the EQC device had been removed completely at the end of the
EQC and it fails.
32
Attention – Cover
opened
The test port cover was
opened during the test.
Typically, this event occurs when the test port cover is opened during the test or when air
bubbles are present in the detection wells of the test device.
1) Verify that the test port cover was not inadvertently opened while the test was running. If
so, repeat the test using a new sample and test device.
NOTE: Close the test port cover within 5 seconds after insertion of the sample tube.
Do not open the cover until prompted.
2) Keep the test device for troubleshooting, and verify there are no bubbles in the detection
wells. If bubbles are visible, use a cleaning device, repeat with a new sample and test
device.
NOTE: Make sure to gently invert the sample as specified in Section 6.4 to avoid
bubbles.
3) If the problem continues, call Technical Support and have the test device handy.
10.3 Alarm Messages
Table 10-4 lists alarm messages and provides a brief description of the issue and instructions for
resolving it.
Table 10‑4 Troubleshooting Alarm Messages
No. Issue Description Resolution
20
Alarm 20
Heater Unstable:
Temperature exceeds
acceptable bounds for
more than 10-seconds
Power instrument off. While instrument is off, remove and examine
fan filter for excessive dust that may be blocking fan. Replace filter if
needed. Power instrument on.
Verify the fan has at least 3 inches of space to ventilate properly,
and that it is not being affected by airflow from a vent or another
instrument.
Check if fan is functioning. If no airflow can be detected, call Technical
Support.
21
Alarm 21
Stuck Key: Key pressed
for more than 5 seconds
Power instrument off and back on. Keys should only be pressed and
release, not pressed and held.
31
Alarm 31
Vacutainer Missing When
Expected
Power instrument off and back on. Verify that sample tube was not
removed during test.