Agilent Technologies N5264A Service Manual page 43

PN-X Measurement Receiver
N5264A
Table 4-1 Power Supply Measurement Points
Test Point Supply Name
TP517 Analog Ground
TP509 +15 V analog
TP511 +9 V analog
TP515 +3.3 V analog
TP513 +5.2 V analog
TP501 +15 V standby
TP504 +32 V analog
TP512 -15 V analog
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 "Front Panel Troubleshooting" on page
If Any Supply Voltage Is 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.
You must sequentially remove all of the assemblies, taking care to disconnect the line power cord before
each removal, and then 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 A19 test set motherboard ribbon cable from the A19 test set motherboard (refer to
"Removing and Replacing the A19 Test Set Motherboard" on page
1. Unplug the A19 test set motherboard to A20 IF multiplexer board ribbon cable from the A20 IF
multiplexer board (refer to
2. Unplug the front panel interface cable from the A1 front panel interface board (refer to
Front Panel Interface Board and Keypad Assembly" on page
3. Remove the A12 board (refer to
with serial numbers prefixed MY/SG/US5144 and below.)" on page
4. Remove the A11 13.5 GHz synthesizer board (refer to
Boards (For analyzers with serial numbers prefixed MY/SG/US5144 and below.)" on page
5. Remove the A10 frequency reference board (refer to
Boards (For analyzers with serial numbers prefixed MY/SG/US5144 and below.)" on page
Service Guide N5264-90001
Expected
Level (Vdc)
0 V
15.0 ±0.1
.0 ±0.1
+3.3 ±0.1
+5.2 ±0.1
+15.0 ±0.1
+32.0 ±0.1
-15.0 ±0.1
4-13.
"Removing and Replacing the A20 IF Multiplexer Board" on page
"Removing and Replacing the A10, A11, and A12 Boards (For analyzers
Test Point Supply Name
TP516 -5.2 V analog
TP514 -7 V analog
TP500 Digital Ground
TP502 +5.1 V standby
TP503 +12 V digital
TP507 +3.35 V digital
TP505 +5.1 V digital
TP519 Digital Ground
7-28).
7-10).
7-14).
"Removing and Replacing the A10, A11, and A12
"Removing and Replacing the A10, A11, and A12
Troubleshooting
Power Up Troubleshooting
Expected
Level (Vdc)
-5.2 ±0.1
7.0 ±0.1
0 V
+5.1 ±0.1
+12.0 ±0.1
+3.35 ±0.1
+5.1 ±0.1
0 V
Chapter 7 for
7-30).
"Removing the A1
7-14).
7-14).
4-9