HP 750 - Manual (Page 201)

C4705-90000 10-3 Product History and Service Notes
Identifying a Printed Circuit Assembly
The plotters have the following major identification features:
Part Number
PCAs having the same part number are directly interchangeable. If a PCA is revised in any
way that makes it nonĆinterchangeable with previously issued PCAs of a particular part
number, a new part number is assigned to the revised PCA.
Revision Letter
This letter identifies the most recent revision to the etched circuit pattern. The original issue
is identified with the letter A. If the master artwork for a printed circuit board is revised in
order to alter performance or manufacture, the revision letter is changed to the next letter in
the alphabet.
Firmware Revision Level
To find out which firmware revision the plotter is using:
1 At the Status / Ready" message press the Enter button.
2 Use the Arrow buttons to scroll to the Utilities" menu display and press the Enter
button.
3 Use the Arrow buttons to scroll to the Statistics" menu display and press the Enter
button.
4 Use the Arrow buttons to scroll to the Code rev ="