U3050BH11
Troubleshooting
Troubleshooting
If the U3050BH11 is not operating properly, use the following procedures to isolate and repair
the failure.
Refer to the Keysight PNA Series Service & Support Home Page at:
http://na.support.keysight.com/pna/
for further information.
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://
www.
k
eysight.com/find/service
.
Refer to
“Shipping Your Instrument to Keysight for Service or Repair” on page
Refer to the following procedures for type of problem encountered. It is recommended that a
qualified service technician perform the following procedures.
No operator serviceable parts inside. Refer servicing to qualified personnel. To
prevent electrical shock do not remove covers.
Non-RF Failures
1.
Verify that the front panel Power Switch is operational.
2.
The front panel Standby LED should operate when the Standby Switch is in the On position.
3.
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. Confirm the instrument AC line module
fuse is operational. See
c.
AC line fuses; remove the bottom cover of the instrument. Near the rear panel are two
fuse holders, remove the fuses and verify that they are operational.
4.
DC Power; during this check you will apply AC power to the instrument with the top cover
removed. Connect the AC power cord to the Test Set.
a.
Set the front panel switch to the Standby position. The fans or indicator lights should be
Off.
b.
Set the Standby Switch to the On position. The internal power supply fan should be
operational and the Standby LED should be On.
c.
If there is no DC power, suspect the Power Supply Module or Standby Switch. The actual
Power Supply terminal connection (+
9
/−
9
Volt) should also be confirmed using a DVM.
34
Keysight U3050BH11 User's and Service Guide
Summary of Contents for U3050BH11
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Page 5: ...U3050BH11 Keysight U3050BH11 User s and Service Guide 1...
Page 21: ...U3050BH11 Operational Check Figure 13 Keysight U3050BH11 User s and Service Guide 17...
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