Agilent Technologies E8362C Service Manual page 89

PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
Table 4-1 Extender Board Measurement Points
Measurement
Location
A +5V power supply
B -15V power supply
C -5V power supply
D +9V power supply
E +15V power supply
F +15V power supply
G +22V power supply
H +32V power supply
1. DMM = Digital multi-meter
If All Supply Voltages Are Present
If all of the supplies have measured within tolerances, and the instrument still is not functioning properly,
refer to "Rear Panel Troubleshooting" on page
If All Supply Voltages Are Missing
WARNING Disconnect the line-power cord before removing any assembly. Procedures described in
this document may be performed with power supplied to the product while protective
covers are removed. Energy available at many points may, if contacted, result in personal
injury or loss of life.
It is necessary to sequentially remove all of the assemblies, taking care to disconnect the line-power cord
before each removal, and then to measure the supply voltages after each removal.
If the missing supply voltages return to a "power on" condition after removal of an assembly, suspect that
assembly as being defective.
Remove the network analyzer assemblies in the order specified in the following steps (refer to
removal instructions).
1. Unplug the test set motherboard cable from the A16 test set motherboard. Refer to
Replacing the A16 Test Set Motherboard" on page
2. Unplug the front panel interface cable from the A3 front panel interface board. Refer to
Replacing the Front Panel Assembly" on page
3. Remove the A6 SPAM board. Refer to
page 7-18.
Service Guide E8364-90038
Signal
Description
Test Equipment Used
4-17.
"Removing and Replacing the A6, A8, A9, and A10 Boards" on
Expected Level
1
DMM
DMM
DMM
DMM
DMM
DMM
DMM
DMM
7-32.
7-10.
Troubleshooting
Power Up Troubleshooting
Approximate
(Vdc) Resistance (W)
+5.0 285
15.0
12.7 k
5.0
7.2 k
+9.0 4.0 k
+15.0 3.0 k
+15.0 2.8 k
+22.0 890
+32.0 2.6 k
Chapter 7
"Removing and
"Removing and
for
4-9