SECTION 7 DIAGNOSTICS AND TROUBLESHOOTING
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7-2
7.2
BIS VISTA Monitoring System
Troubleshooting Procedure
The BIS VISTA Monitoring System consists of three major components: Monitor, BISx,
and PIC/Sensor. By using the three-step Checkout Procedure and a component swapping
technique, the component at fault can easily be determined.
Use the Checkout procedures in Section 6.2 “System Checkout” to test function of each
component. The steps of this checkout procedure include:
•
Monitor; test monitor and battery power functions
•
BISx; recognition and DSC Self Test
•
PIC and Sensor; recognition and Sensor Check test
Consult Section 7.3 “BIS VISTA System Messages and Corrective Actions” for messages
that may occur and the appropriate action to take.
Consult Section 8 “Servicing the BIS VISTA System” for directions on replacing
components and handling components that require service.
BISx Cable Problem Isolation
Note:
This BIS VISTA Monitoring System Service Information Manual contains
the maintenance and diagnostic troubleshooting information necessary for
qualified technical personnel to test and replace those parts of the equipment
that are replaceable by the customer. Aspect does not authorize nor provide
information to service or repair the internal electronic components of the
BISx or the BIS VISTA monitor.
The qualified user may replace the BISx cables by following the procedures in Section 8
“Servicing the BIS VISTA System.” If the cables or connectors are physically damaged, they
will need to be replaced. If cables are suspect, the following may be of aid in determining
which cable is defective.
The
Monitor Interface Cable
(monitor connector to BISx) is an 11-conductor cable that
handles all communications to/from the BISx. It uses two twisted pair and a ground for
digital data transmission and for the clock transitions that are used to generate power in the
BISx housing. Therefore, failure in this cable is usually seen as failure to recognize the BISx
(“Connect BISx” message).
The
Patient Interface Cable (PIC)
is a 10-lead conductor that brings in the patient’s EEG
signal and also provides information about the sensor connected. If this cable fails, the
system may indicate that the sensor is not connected or is illegal, or the Sensor Check may
fail or restart on its own.
