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14-4 Service Guide

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET

Assembly Replacement Sequence HP 8719ES/20ES/22ES

RF Network Analyzers

Procedures in This Chapter

The following sections describe the assembly replacement procedures for the

HP 8719ET/ES, HP 8720ET/ES, and HP 8722ET/ES assemblies:

• Replacing the Line Fuse , on page 14-5

• Removing the Covers , on page 14-6

• Removing the Front Panel Assembly, on page 14-8

• Removing the Front Panel Interface and Keypad Assemblies , on page 14-10

• Removing the Display Lamp and Assembly, on page 14-12

• Removing the Rear Panel Assembly, on page 14-14

• Removing the Rear Panel Interface Board Assembly, on page 14-16

• Removing the Source Assemblies , on page 14-18

— M/A/D/S (A58)

— YIG 1 (A54)

— YIG 2 (A55)

— Cavity Oscillator (A57)

• Removing the A7 CPU Board Assembly, on page 14-20

• Removing the A7BT1 Battery, on page 14-22

• Removing the A15 Preregulator Assembly, on page 14-24

• Removing the A19 Graphics Processor Assembly, on page 14-26

• Removing the A3 Disk Drive Assembly, on page 14-28

• Removing the A62, A63 Test Port Couplers and LED Board Assemblies , on page 14-30

• Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly, on

page 14-32

• Removing the B1 Fan Assembly, on page 14-34

NOTE After replacing the assemblies, perform the corresponding adjustment and

veriﬁcation tests located in “Post-Repair Procedures” on page 14-35.

HP 8719ET Service Guide

Other manuals for HP 8719ET