Troubleshooting The Test Set; Non-Rf Failures - Keysight Technologies U3042AE08 User's And Service Manual

U3042AE08

Troubleshooting the Test Set

Troubleshooting the Test Set
If the test set is not operating properly, use the following procedures to isolate the problem. It is
recommended that a qualified service technician perform the following procedures.
Refer to the Keysight PNA Series: Service & Support Home Page at: 
http://na.keysight.com/pna
To request service, please contact your local service center. In the US, call 800-829-4444. 
For a listing of service centers worldwide, please visit us at http://keysight.com/find/service.
WARNING
No operator serviceable parts inside. Refer servicing to qualified personnel. To prevent
electrical shock do not remove covers.

Non-RF Failures

Non RF failures are; Power Supply, Fans, Control Lines, Status LEDs or Interface not operating. Refer to
Figure 63 on page 71 and
1. Verify that the front panel Power Switch is operational.The front panel Active LED will be off unless the
test set interface cable is connected and the test set is addressed by the network analyzer.
2. Turn on the test set and the analyzer.
3. The rear panel Deck and Internal power supply fans should be operational. If not continue with
4. AC Line voltage checks (remove AC power from the instrument).
a. Ensure the proper AC Line voltage is present at the instrument line cord.
b. Remove the AC power cord from the instrument. Verify the instrument AC Line Module fuse
(2119-0709) and replace if necessary. Refer to
c. Verify the Internal AC lines fuse (2110-0342). Remove the instrument bottom cover. Near the rear
panel are two fuse holders, verify the fuses and replace if necessary. See
Internal DC Power checks.
5.
a. Set the front panel switch to the Standby position. No fans or indicator lights should be operational
b. Remove the top cover.
c.
Set the Standby switch to the on position. Both the rear panel and internal power supply fans should
be operational. Verify that the DC indicator LEDs are on as shown in
LEDs indicators for +9, -10 and +24 Vdc are off.
for further information.
Figure 64 on page 71.
Figure 5 on page 12.
Figure 63 on page
70
step 4.
Figure 72 on page 81.
71.