HP 220 - Manual (Page 181)

9Ć3 Product History and Service Notes C3187Ć90000
Identifying aPrinted Circuit Assembly
DesignJet 200 and DesignJet 220 PCAs 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.
Rev:s:on 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 alphabetical sequence.
F:rmware Rev:s:on Code
The firmware revision code is printed on the EPROMs or masked ROMs on the main PCA,
for example B.02.01. This code is also printed by the plotter on the setup sheet and on the
service configuration plot.
The DesignJet 200 old firmware revision A.01.00 is not forward
compatible with the new carriage C2847Ć60071 (carriage PCA
C2847Ć60125). In combination they destroy the cartridges.
The DesignJet 200 old main PCA C3180Ć60101 is not forward
compatible with the new shielded trailing cable C3180Ć60033 (colored
blue on one side).
C A U O G O N