4-28 Keysight N5290/1A Service Guide
N5290/91A Troubleshooting
N5292A Test Controller Troubleshooting
4-
2.
If none of the port are working, verify the output of the LOPA. It is only
necessary to verify the output of one port on the LOPA. If you find incorrect
power levels and suspect a component has failed verify the DC voltages
referencing Table 2-3 on page 2-16 and Figure 2-7 on page 2-16. Replace
the failed component.
REF IF or Test IF
If the REF IF or Test IF fails the Operation Verification test the following
procedure can be used to verify the failure. The procedures assumes power
supplies and front panel LEDs are working. Suspect the A5 test set
mother-board (TSMB) or coaxial cables. Refer to
Motherboard (TSMB)” on page 4-9
1. N5292A 2-port
- Verify that the front panel Port 1 & 2 REF and IF coax
cables are properly connected to the rear panel (A, B, C and D) and
insertion loss is not >
−
2.5 dB. Replace the coax cable if damaged. If
damaged, refer to
“Removing the N5292A Option 200/400 from the
Verify the front panel integrated connector pins are not damaged. If
“Removing and Replacing the Subpanel PCA Sensor
and
“Removing and Replacing the Front Panel
Integrated Connectors/Cables” on page 7-31
. See also
Panel Integrated Port Connector” on page 3-40
.
Verify the blue wires supplying power to the integrated connectors are not
damaged. If damaged, refer to
“Removing and Replacing the Front Panel
and Subpanel Assemblies” on page 7-10
the Front Panel Integrated Connectors/Cables” on page 7-31
.
2. N5292A 4-port
- Verify that the front panel Port 1 & 4 REF and IF coax
cables and rear panel coax cables (A, B, C, D and R) are properly
connected to the TSMB. Verify that the insertion loss is not >
−
2.5 dB.
Replace the coax cable if defective. Refer to
Option 200/400 from the System” on page 7-6
.
Verify the front panel integrated connector pins are not damaged. If
“Removing and Replacing the Subpanel PCA Sensor
and
“Removing and Replacing the Front Panel
Integrated Connectors/Cables” on page 7-31
Verify the blue wires supplying power to the integrated connectors are not
damaged. If damaged, refer to
“Removing and Replacing the Front Panel
and Subpanel Assemblies” on page 7-10
the Front Panel Integrated Connectors/Cables” on page 7-31
.
3.
If the coax cables are properly connected and the insertion loss is correct,
Summary of Contents for N5222B
Page 3: ...3 ...
Page 4: ...4 ...
Page 10: ...6 Keysight N5292A User s and Service Guide Contents ...
Page 28: ...1 18 Keysight N5290 1A Service Guide Safety and Regulatory Information Site Preparation 1 ...
Page 86: ...3 50 Keysight N5290 1A Service Guide System Tests and Adjustments Adjustments 3 ...
Page 128: ...5 10 Keysight N5290 1A Service Guide Theory of Operation Theory of Operation 5 ...
Page 225: ...Installation Note Xxxxx xxxxx 3 ...