HP 8517B Input Amplifier, Buffer Amplifier, A22 Input Amplifier Assembly, A23 to A26 Buffer Amplifiers, Replacement, Replacement

HP 8517B Test Set Replacement Procedures

Assembly Replacement Procedures

Input Amplifier	A22 Input Amplifier Assembly
Replacement

NOTE	This procedure is for Option 007, Option 002 “plus” 007, and Option 004
	“plus” 007, only.
	1.	See the figure in Chapter 7, Table 7-17for the location of the A22
	1.
		amplifier.
	2.	Without disconnecting AT1 and AT2 fixed attenuators, remove the other
		five semi-rigid cables attached to the A18 switch/splitter.
	3.	Remove the W45 semi-rigid cable between the A22 input amplifier and
		J7 rear-panel RF input connector.
	4.	Remove the two screws holding the switch/splitter to the amplifier
		mount bracket.
	5.	Remove the switch/splitter from the amplifier mount bracket.
	6.	Remove the four screws that secure the A22 input amplifier to the
		amplifier-mount bracket.
Buffer Amplifier	A23 to A26 Buffer Amplifiers
Replacement

NOTE	This procedure is for Option 007, Option 002 “plus” 007, and Option 004
	“plus” 007, only.
	1.	See the figure in Chapter 7, Table 7-17for the location of the buffer
	1.
		amplifiers.
	2.	Remove the two semi-rigid cables from the buffer amplifier to be
		replaced.
	3.	Remove the four screws securing the buffer amplifier to the amplifier
		mount bracket.
	4.	Remove the buffer amplifier.

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