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Section 5: Troubleshooting
5- 7
5.6.3 Buttons
Table 5-5 lists symptoms of problems relating to nonresponsive buttons and
provides recommended actions. If the action requires replacement of a PCB,
refer to Section 6, Disassembly Guide.
Table 5-5: Button Problems
Condition
Recommended Action
1. The N -3100 turns on
but does not respond
to one of the buttons
(other buttons are
operational).
1. Check connection between the UIF PCB and
the Display PCB.
2. Replace the Display PCB.
2. The N -3100 turns on
but does not respond
to any of the buttons.
1. Press the NEW PATIENT/NEONATAL button
twice rapidly. If the NEONATAL MODE
indicator lights, replace the Display PCB.
2. If the NEONATAL MODE indicator does not
light, replace the UIF PCB.
5.6.4 Display/Alarms
Table 5-6 lists symptoms of problems relating to nonfunctioning displays,
audible tones or alarms, and recommended actions. If the action requires
replacement of a PCB or module, refer to Section 6, Disassembly Guide.
Table 5-6: Display/Alarms Problems
Condition
Recommended Action
1. Display values are
missing or erratic.
1. Replace the Display PCB.
2. If the condition still persists, replace the UIF
PCB.
2. Display segments do
not light.
1. Check the connection between the UIF PCB
and the Display PCB.
2. If the condition does not change, replace the
Display PCB.
3. If the condition still persists, replace the UIF
PCB.
3. Alarm sounds for no
apparent reason.
1. Moisture or spilled liquids can cause an alarm
to sound. Allow the monitor to dry thoroughly
before using.
2. Replace UIF PCB.
4. N-3100 responds to
button press but tone
fails to sound.
1. Check the connection between the UIF PCB
and the speaker.
2. If the condition does not change, replace the
speaker.
3. If the condition still persists, replace the UIF
PCB.