Installing Or Changing A Serial Number - Keysight Technologies N5221A Service Manual

General Purpose Maintenance Procedures
Option Enable Utility

Installing or Changing a Serial Number

It is necessary to reinstall the instrument serial number if the test set
motherboard is replaced.
Use extreme care when entering the serial number, as only one attempt is
allowed.
1. To change a serial number, select Change Serial from the Option Enable
menu bar (see
displayed. If no serial number has previously been entered, the word
"NONE" will be displayed.
2. VERY CAREFULLY, type the new serial number into the space provided and
then click Change.
3. If an error is made in entering the serial number, obtain a clear code from
Keysight, enter the clear code in the space provided and click CLEAR. The
correct serial number can then be entered.
To change an incorrect serial number, a clear-code password is required.
Contact Keysight to obtain the clear-code. Refer to
on page
8-14
Figure 8-5 on page
2-7.
11). The current serial number is
"Contacting Keysight"
Keysight N5221A/22A Service Guide