14-8 Service Guide
Assembly Replacement and Post-Repair Procedures 8719ET/20ET/22ET
Removing the Front Panel Assembly 8719ES/20ES/22ES
RF Network Analyzers
Removing the Front Panel Assembly
Tools Required
• T-10 TORX screwdriver
• T-15 TORX screwdriver
• small slot screwdriver
• ESD (electrostatic discharge) grounding wrist strap
• 5/16-inch open-end torque wrench (set to 10 in-lb)
Removal
1. Disconnect the power cord.
2. Remove the front bottom feet (item 1).
3. Remove all the RF cables that are attached to the front panel (item 2).
NOTE Options may differ from figure and have more than one RF cable on the front
panel.
4. Remove the Line button (item 3).
5. Remove the trim strips (item 4) from the top edge of the front frame by prying under the
strip with a small slot screwdriver.
6. Remove the 7 screws (item 5) from the top and bottom edges of the frame.
a. Remove all 4 flathead screws from the top and the 3 flathead screws from the
bottom.
NOTE The 3 bottom screws are on both ends and in the middle. They look like the
screws from the top. Do not remove the other 6 screws from the bottom.
7. Slide the front panel over the test port connectors.
8. Disconnect the ribbon cables (item 6) and (item 7). The front panel is now free from the
instrument.
Replacement
1. Reverse the order of the removal procedure.
NOTE When reconnecting semirigid cables, torque the to 10 in-lb.
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