Getting Started With Troubleshooting; Check The Basics - Keysight N5221A Service Manual

Troubleshooting

Getting Started with Troubleshooting

Getting Started with Troubleshooting
Where you begin troubleshooting depends upon the symptoms of the failure. Start by checking the basics as
outlined in the following section. Also review the flowchart in
able to determine where in the troubleshooting procedure to begin, to locate the failed assembly.

Check the Basics

A problem can often be solved by repeating the procedure you were following when the problem occurred.
Before calling Keysight Technologies or returning the instrument for service, please perform the following
checks:
1. Is there power at the mains receptacle? If not, correct this situation and proceed.
2. Is the instrument turned on? Check to see if the front panel line switch glows. This indicates the power
supply is on. If the front panel line switch is on but the power supply does not appear to be on, go to
"Power Up Troubleshooting" on page
3. Is the Windows operating system running? If not, refer to
®
8 for instructions.
4. If other equipment, cables, and connectors are being used with the instrument, make sure they are
clean, connected properly and operating correctly.
5. Review the procedure for the measurement being performed when the problem appeared. Are all the
settings correct? If not, correct them.
If the instrument is not functioning as expected, return the unit to a known state by pressing the UTILITY
key.
Preset
6. Is the measurement being performed, and the results that are expected, within the specifications and
capabilities of the instrument? Refer to the embedded help in the analyzer for instrument specifications.
7. If the problem is thought to be due to firmware, check to see if the instrument has the latest firmware
before starting the troubleshooting procedure. Refer to
instructions.
8. If the necessary test equipment is available, perform the operator's check and system verification in
Chapter 3, "Tests and Adjustments."
4-4
Figure 4-1 on page
4-6.
"Operating System Recovery"
"Firmware Upgrades"
PNA Series Microwave Network Analyzers
4-5. You should then be
in Chapter 8
Service Guide N5222-90001
N5221A/22A
in Chapter
for