Keysight N5227B Service Guide 7-77
Repair and Replacement Procedures
Post-Repair Procedures
A18 system motherboard
No adjustment needed
Front Panel Keypad and RPG Test
and
A19 midplane board
No adjustment needed
None needed
A20 power supply assembly
No adjustment needed
None needed
A21 CPU board
No adjustment needed
A22 GPIB board
No adjustment needed
None needed
A23 test set motherboard
Reinstall the serial number. (Refer to
“Installing or Changing a Serial
Re-enable all hardware options. (Refer
to
A24 IF multiplexer board
S93900/1/2/4/5/7A/B Installed)
A25 HMA26.5
: LO Drive
only
: LO Drive
Noise Figure only (Option 029 equipped
PNA)
S93900/1/2/4/5/7A/B Installed)
A26 splitter
S93900/1/2/4/5/7A/B Installed)
Table 7-2
Related Service Procedures (Continued)
Replaced Assembly
Adjustments
and Other Procedures
Verification, Performance,
and Other Tests and Procedures