Agilent Technologies E8285A Manual page 47

Figure 2-2 Agilent E8285A Test Set Troubleshooting Flowchart
BEGIN
Power-up the Test Set to run self diagnostics.
Is display blank?
NO
Does a self test error
message appear?
NO
Run the Functional Diagnostics on
the SERVICE MENU. See
and CDMA Diagnostics" on page
NO
If you still suspect a problem, use the
manual troubleshooting procedures.
See "Manual Troubleshooting
Procedures" on page
Perform the functional verification tests, refer to
NO
All OK?
YES
END
Fan is not running or
YES
does Test Set shut off
after a few seconds?
NO
1. Check EL Display or ribbon cable.
2. Check display driver.
YES
"Reading Front Panel or GPIB Codes" on page
Refer to
Is error code SRBC
or miscellaneous
hardware related?
NO
"AF, RF,
NO
64.
NO
70.
Chapter 4 , "Functional Verification" on page
How to Troubleshoot the Test Set
1. Check for a faulty fan.
YES
2. Check for a faulty power supply.
3. Check for a faulty assembly pulling
down line voltage.
Turn off Test Set and remove external
YES
and internal top covers. Power-up Test
Set and read Status LEDs for Self-Test
errors. Refer to
on page
YES
Problem detected?
YES
Problem detected?
Troubleshooting
51.
"Reading LED Codes"
53.
Repair Test Set according
to the diagnostic
recommendations.
Repair Test Set according
to findings.
111.
47