HP 5308A Operating And Service Manual page 6

Model 5308A
General Information
9H-1-10. The printed circuit board within the instru-
ment is identified by a two-section, 10-digit part
number (e.g., 05308-60001) and a four-digit series
number (e.g., "SERIES 1440A"). The series number
identifies the electrical characteristics of the com-
plete printed-circuit assembly. A replacement circuit-
board assembly may have a different series number
than the assembly originally supplied with the instru-
ment. Therefore, when troubleshooting a circuit-
board assembly, ensure that the series number on the
schematic diagram matches the series number on the
board assembly. If the series number on the assembly
is lower than the number on the schematic diagram in
Subsection VIII, refer to Subsection VII of this docu-
ment for change information. If the series number on
the assembly is higher than the number on the sche-
9H-1-2
matic diagram in Subsection VIII, the change infor-
available from the nearest Hewlett-Packard Sales
and Service Office,
9H-1-11. Manual Changes and Options
9H-1-12. The title page lists the serial prefix number
to which this manual directly applies. If the serial
prefix is different from the one listed, a change sheet
is included describing the required changes. If this
change sheet is missing, the information can be sup-
plied by any Hewlett-Packard Sales and Service office
listed in Section VIII of the 5300B Measuring System
manual. Options are listed in Section IX H, Sub-
section VII.