14-10
Service Guide
Assembly Replacement and Post-Repair Procedures
HP 8719ET/20ET/22ET
Removing the Front Panel Interface and Keypad Assemblies
HP 8719ES/20ES/22ES
RF Network Analyzers
Removing the Front Panel Interface and Keypad
Assemblies
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. Remove the front panel assembly from the analyzer, refer to
“Removing the Front Panel
Assembly” on page 14-8
.
2. Remove the 4 ribbon cables (item 1 through 4) from the front panel interface board.
3. Remove the 4 screws (item 5), that attach the interface board.
NOTE
If the front panel interface board is to be replaced, install the new board at
this point and reverse steps 1 through 3 to complete the process.
4. Remove the 7 screws (item 6) from the A1 keypad board.
5. Remove the 3 screws (item 7) from the display cover.
6. Lift the display assembly slightly and slide out the A1 keypad board.
Replacement
1. Reverse the order of the removal procedure.
