Getting Started With Troubleshooting; Check The Basics - Keysight N9912A 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. Does the analyzer have power available? It is recommended that the battery is installed and the AC
power adapter is also connected.
2. Does the analyzer turn On and Off when the On/Off Button is pressed? When the unit is on, the green
LED below the button should light.
3. Does the analyzer power up normally into CAT mode? If not, see
page 4-6.
4. If other equipment, cables, and connectors are being used with the analyzer, 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.
6. If the analyzer is not functioning as expected, return it to a known state by pressing the
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.
4-4
Figure 4-1 on page 4-5. You should then be
"Power Up Troubleshooting" on
"Firmware Upgrades" in
Service Guide N9912-90003
RF Analyzer
N9912A
key.
Preset
Chapter 8 for