14-16 Service Guide
Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET
Removing the Rear Panel Interface Board Assembly HP 8719ES/20ES/22ES
RF Network Analyzers
Removing the Rear Panel Interface Board Assembly
Tools Required
• T-10 TORX screwdriver
• T-15 TORX screwdriver
• ESD (electrostatic discharge) grounding wrist strap
Removal
1. Disconnect the power cord and remove the top and bottom covers, refer to “Removing
the Covers” on page 14-6.
2. If the analyzer has option 1D5, remove the high-stability frequency reference jumper
(item 1).
3. Remove the hardware that attaches the 9 BNC connectors to the rear panel (item 2).
4. Remove the hardware that attaches the test set I/O interconnect to the rear panel
(item 3).
5. Remove the rear panel from the analyzer (refer to “Removing the Rear Panel Assembly”
in this chapter).
6. If the analyzer has option 1D5, disconnect the cable (item 4) from the rear panel
interface board.
7. Disconnect the ribbon cable (item 5) from the rear panel interface board.
8. Disconnect the wiring for the 3 BNC connectors and remove the attaching hardware
(item 6).
9. Remove the MEAS RESTART connector from the interface board, approaching it from
the outside of the rear panel assembly (item 7).
Replacement
1. Reverse the order of the removal procedure.
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