Keysight N5221A/22A Service Guide 6-27
Replaceable Parts
Replaceable Parts Listings
2-Port Configuration, Option 201
Bottom Assemblies, 2-Port, Option 201
Reference
Designator
Part Number
a
Qty Description
A19 N5240-60163
Was N5245-60003
1 Test set motherboard
A20
N5240-60062
b
Was N5240-60045
1 IF multiplexer board
A21 5087-7765 1 LO Multiplier/amplifier 26.5 (HMA26.5)
A23 5087-7829
Was 5087-7766
1Mixer brick
A25
A28
5087-7757 2 Test port 1 receiver coupler
Test port 2 receiver coupler
A29
A32
5087-7813 2 Test port 1 coupler
Test port 2 coupler
A33 5087-7758 1 Reference mixer switch
N5240-60058 2 Front panel LED board
a. Part numbers in italic typeface are for rebuilt exchange assemblies. Refer to “Rebuilt-Exchange Assemblies” on
page 6-4.
b. All new units built after August 2009, no longer use the N5242-60031 cable that was attached to connector
P1001 and Source 2. As a result of this change, the IF multiplexer boards have had their P1001 connectors
removed. If your instrument contains a N5242-60031 cable, remove it from your instrument.
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