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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-550B 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-550B shows no readings
•
Suspect readings
5. Data Port
•
N-550B 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
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