Troubleshooting Using Service Function; Power On Test - Agilent Technologies E5052A Service Manual

Troubleshooting

Troubleshooting Using Service Function

Troubleshooting Using Service Function
The Agilent E5052A 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 E5052A 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
b. Click
c. Password dialog box opens. Enter the password
d. Click
e. Click
f. The test results can be displayed with result softkeys (
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 4-10 Power On Test softkey menu
96
key.
and, then, click
Service Menu
softkeys.
"OK" button.
. Then click
Service Functions
to restart the test. Wait until the power-on test ends.
Execute Test
shown in Figure 4-10. The A1through A6 mean the analog sections (boards) of the
E5052A.
Service Function - Service Functions
in the Password box and then click
kid
.
Power On test
A1 Result
in the
through as
A6 Result)
Chapter 4