Nellcor N-180, Manual

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N-180 Pulse Oximeter Service Manual
5-8
5-2
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-11
Erratic
values
Fixed error
values
Intermittently
lighted
Partially
lighted
Incorrect
values
Missing
segments
Incorrectly
lighted
indicator
Indicators
not lighted
Missing all displays
or indications
Missing one or more
displays or indicators
Incorrect
readings
Incorrect
backlighted
message
indicators
Missing display
Incorrect
display
Symptoms Use table listed below
No audio when
power is applied
Normal
audio
AC
Battery
28018A/15-3
Figure 5-1. Display Troubleshooting Decision Tree (3 of 4)
Missing Front Panel Display Segments
Missing display segment symptoms can mean missing all displays or
indicators, or missing one or more displays or indicators.
No audio symptom. The monitor is connected to an AC power source, all
displays and indicators are dark, and the dual-tone
beep that occurs when you turn on the monitor does
not sound.