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Table 3-3 System Messages (Continued)
Message
SpO2 Noisy Signal
Excessive patient movement, electrical
interference, or optical interference is
present.
SpO2 Sensor Fail
The SpO
device; or the cable or sensor are broken.
System Failure - Cycle
A serious error has occurred.
Power
Service Unit
Appears during the Shift/System Check
M3500B/M5500B Service Manual
Description
cable is not connected to the
2
System Messages
Corrective Action
1. Minimize patient movement or apply the
sensor to a site with less movement.
2. Secure the sensor cable loosely to the
patient.
3. Reduce sources of electrical or optical
interference.
1. Attach the cable to the M3500B/
.
M5500B
2. Replace cable and/or sensor.
Turn power off, then on. If message reap-
pears, service unit. See "Troubleshoot-
ing" on page 3-1.
1. Replace Data Card.
2. Replace lithium battery.
3. Replace Control PCA.
3
3-15
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