Decode HP Laserjet serial number

[Hostmos]

Hello! How decoded serial number of HP Laserjet. It consist of 10 characters?
Example - CNGTH990EV

First two of then - country (china), then i dont know.
Help me in decoding this one

[REO51ST]

@Hostmos

Look at your serial number.

This is how you decrypt it:

• The first two characters are the country code.
• The third character is the code of the supply site.
• The next three characters are the date of manufacture, the first digit is for the year the next two for the calendar week.
• The last four characters are a sequential ID on that particular week.

Example :  CNU1234ABC

CN=China

U=The supply site.

1= The year 2011.

23 = 23 week of 2011.

4ABC = The sequential ID.

REO

[Hostmos]

Thanjs, but if
"The next three characters are the date of manufacture, the first digit is for the year the next two for the calendar week."
With my serial CNGTH990EV i have TH9 and TH is not digits.

Plus if a change last symbol, hp-site serial helper wrote - not valid - so may be it is checksum??

Waiting for your help

[REO51ST]

Sorry @Hostmos

Looks like the printers are different than the laptops/desktops.

REO

[Hostmos]

Should you help me in that little nonconfidential )) question