Table 5: Problem Categories - Nellcor OxiMax N-550 Service Manual

Troubleshooting
Power
44

Table 5: Problem Categories

Problem Area
1. Power
• No power-up on AC and/or DC
• Fails power-on self-test
• Powers down without apparent cause
2. Buttons
• N-550 does not respond properly to
buttons being pressed
3. Display/Alarms
• Display does not respond properly
• Alarms and other tones do not sound
properly or are generated without
apparent cause
4. Operational Performance
• Displays appear to be operational, but
the N-550 shows no readings
• Suspect readings
5. Data Port
• N-550 data port not functioning
properly
All of the problem areas in Table 5 are discussed in the following paragraphs.
Power problems are related to AC and/or DC. Table 6 lists recommended
actions to power problems.
Refer To
Power on page 44
Buttons on page 46
Display/Alarms on page 47
Operational Performance
on page 48
Data Port on page 49