Getting Started With Troubleshooting - Keysight N5171B EXG Service Manual

Troubleshooting

Getting Started with Troubleshooting

Getting Started with Troubleshooting
Immediately unplug the signal generator from the ac power line if the signal generator shows
any of the following symptoms:
— smoke, arcing, or unusual noise from inside the signal generator
— a circuit breaker or fuse on the main ac power line opens
If this rare and unlikely symptom occurs it's a potentially hazardous condition. Do not try to
repair, instead, return the signal generator to Keysight Technologies for service.
For the instrument to meet performance specifications and for accurate self-test results, allow a
warm up period of 45 minutes within an operational temperature range of 0 to 55 °C. For more
information, refer to the X-Series signal generator Data Sheet.
This section describes the basic procedural flow of troubleshooting when
servicing the N5171B, N5172B, N5173B, N5181B, N5182B, and N5183B. The
following table provides a troubleshooting path from a failure symptom to the
isolation of the possible fault. Prior individually related conditions are assumed
to have occurred when troubleshooting assembly level problems. It is therefore
recommended that unless restricted by a instrument specific fault and/or
limited functionality. Perform the troubleshooting procedure in the order
presented in this table.
Keysight X-Series Signal Generators Service Guide
If able to run self test...
Run Self Test
If unable to run self test or all self tests pass but the problem still exists,
check...
Boot-Up Routine
LCD Display Appears to be Inoperative (Dark)
If other conditions occur...
The Instrument Does Not Power-On
Front Panel LEDs are not Functioning
The Green Front Panel Power Switch LED or Yellow Stand-by LED is not
Working
Front Panel Hardkey and Softkeys are not Functioning
The RPG Knob is Not Functioning
Blank or Missing Pixels
The Screen Saver is Not Functioning
Fans Do Not Turn On
No LAN Activity
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