Keysight E5052B - Troubleshooting Using Service Function; Power on Test

64 Chapter 4
Troubleshooting
Troubleshooting Using Service Function
Troubleshooting Using Service Function
The Keysight E5052B has a service function to diagnose the analog measurement section
and internal dc power supply voltages. The Power On Test of the service function makes it
possible to isolate a faulty board assembly. The following paragraphs describe the
procedure to perform the Power On Test.
Power On Test
Power-on self-test always takes place once the E5052B is turned on. When a failure is
detected, a message "Power on self test failed" is displayed. The content of the power-on
self-test includes the dc power supply voltage, source PLL synthesizer and level controller
(ALC) tests. When the power on self-test failed, perform the Power On Test in Service
Function Menu to narrow down failure possibilities.
The following procedure can be used to restart the power-on self test as required.
a. Press key.
b. Click
Service Menu and, then, click Service Function - Service Functions in the
softkeys.
c. Password dialog box opens. Enter the password
kid in the Password box and then click
“OK” button.
d. Click
Service Functions. Then click Power On test.
e. Click
Execute Test to restart the test. Wait until the power-on test ends.
f. The test results can be displayed with result softkeys (
A1 Result through A6 Result) as
shown in Figure 4-8. The A1through A6 mean the analog sections (boards) of the
E5052A.
NOTE When “hex 0” status is displayed in the results softkey, the corresponding analog section
passes. When other status is displayed in the results softkey, the corresponding analog
section fails.
Figure 4-8 Power On Test softkey menu