HP 85106D mm-Wave System
5-19
HP 85104A Test Set Module
Troubleshooting Procedures
Switch the Main Line
Isolator
Procedure 8
Before beginning this procedure, turn the HP 85105A mm-wave controller
power OFF. Disconnect the HP 85104A from the HP 85105A.
Refer to step references in Figure 5-11 on page 5-32.
1. Disassemble the test set module using the following four steps:
a.
Invert the test set module so that the bottom side is facing up.
Remove the stand by loosening the two captive screws until the
module and stand are disengaged.
b.
Remove all extensions from the HP 85104 test set modules.
c.
Remove the two torx-head screws from the bottom housing. Pull the
bottom housing off.
d. Slide the front panel up and out. Cut and remove any cable ties as
needed.
2. Disconnect the LO IN and LO OUT cables from the power divider
(Step 13).
3. Disconnect the mixer bracket from A11, or A12 mixer (incident signal
path near left-hand Step 14; reflected signal path near right-hand
Step 14).
4. Disconnect A9 or A10 isolator at the coupler interface (incident signal
path near left-hand Step 15; reflected signal path near right-hand
Step 15.)
5. Slide the isolator/mixer assembly out of the module and replace it with a
known good incident arm assembly from another test set module.
6. Replace the suspect isolator with a known good isolator, possibly from
the other test set module.
7. Reattach the LO power divider by replacing the two screws and
reconnecting the LO IN and LO OUT cables.
8. Reconnect the cables from the HP 85104A to the HP 85105A. Turn the
HP 85105A ON. Recheck the unratioed power levels (refer to
“Procedure 1” on page 5-11).
9. Return to the troubleshooting flowchart.
Содержание 85106D
Страница 11: ...x HP 85106D mm Wave System ...
Страница 95: ...4 2 HP 85106D mm Wave System Service and Troubleshooting Figure 4 1 HP 85106D System Block Diagram ...
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Страница 117: ...4 24 HP 85106D mm Wave System Service and Troubleshooting Check Unratioed Power Levels ...
Страница 139: ...5 22 HP 85106D mm Wave System HP 85104A Test Set Module Troubleshooting Procedures ...
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Страница 149: ...5 36 HP 85106D mm Wave System HP 85104A Test Set Module Assembly Procedure Figure 5 12 HP 85104A Assembly Procedure ...
Страница 153: ...5 40 HP 85106D mm Wave System HP 85104A Test Set Module Replaceable Parts Figure 5 13 HP Q85104A Replaceable Parts ...
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Страница 212: ...6 48 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 28 HP 85105A Major Assemblies ...
Страница 214: ...6 50 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 29 HP 85105A Semi rigid RF Cables ...
Страница 218: ...6 54 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 31 Wire Harnesses ...
Страница 220: ...6 56 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 32 HP 85105A Front Panel ...
Страница 222: ...6 58 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 33 Rear Panel Standard Option 050 ...
Страница 228: ...6 64 HP 85106D mm Wave System HP 85105A mm Wave Controller Replaceable Parts Figure 6 37 HP 85105A Accessories Standard ...
Страница 238: ...B 2 HP 85106D mm Wave System Upgrade Paths ...
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