Specifications

Chapter 3 49
Troubleshooting
How to Troubleshoot the Test Set
Figure 3-2 Agilent 8935 Test Set Troubleshooting Flowchart
Step 1. Power-up the Test Set to run self diagnostics.
Step 3. If you suspect that a problem still exists, run the AF, RF, and/or CDMA Diagnostics
test of the SERVICE4 program. See "Accessing the Diagnostic Tests" on page 62.
BEGIN
Step 2. Run the FUNCTIONAL DIAGNOSTICS on the SERVICE
MENU. See “Functional Diagnostics (Step 2)” on page 62.
Step 4. If you still suspect a problem, use the manual troubleshooting
procedures. See "Manual Troubleshooting Procedures (Step 4)" on page 75.
Problem detected?
Perform "Product Verification" on page 90.
Repair Test Set according to findings.
Did you hear the fan
running?
Check for faulty:
1. fan,
2. power supply
3. assembly pulling line voltage
low. See "If the Test Set Fails to
Power-up" on page 52.
Problem detected?
Repair Test Set
according to diagnostics.
Perform "Product
Verification" on page 90.
Problem detected?
Repair Test Set
according to diagnostics.
Perform "Product
Verification" on page 90.
Perform "Product
Verification" on page 90.
NO
YES
Turn off Test Set and remove external and internal covers.
Power-up Test Set and read Status LEDs for Self-Test
errors Refer to "Reading LED Codes" on page 56.
Turn off Test Set and remove
external and internal covers.
Power-up Test Set and read Status
LEDs for Self-Test errors. Refer to
"Reading LED Codes" on page 56.
Is display screen
blank?
Does a self-test
error appear?
Component problem. Repair Test
Set and perform "Product
Verification" on page 90.
Self-Test error
problem?
Display problem, replace display and perform "Product
Verification" on page 90.
Misc. hardware or
SBRC problems?
Refer to "Reading Front
Panel or GPIB Codes"
on page 54.
Perform "Product Verification" on
page 90.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES