User's Manual
HP Designjet T Series — Service Manual 2-3
Replacing the PrintMech PCA, Media Advance Encoder PCA and Formatter
To get printer logs, see Appendix C: Obtaining printer logs on page 2-46.
Replacing the PrintMech PCA, Media Advance Encoder 
PCA and Formatter
Location of the main and backup NVM
 For T1100/T1100ps/T610 printers, the backup NVM is located in the 
Printmech PCA.
 For T1120/T1120ps printers, the backup NVM is located in the Media 
Advance Encoder PCA.
 In all T Series printers, the main NVM is located in the Hard Disc Drive.
IMPORTANT: Three rules for replacing these three service parts
 Never install a previously used PrintMech PCA (T1100/T1100ps/T610) 
or Media Advance Encoder PCA (T1120/T1120ps) into another printer.
 Never install a previously used Formatter in any T Series printer.
 You MUST NEVER replace both the Formatter/Hard Disc Drive and the 
PrintMech PCA (T1100/T1100ps/T610) or Media Advance Encoder 
PCA (T1120/T1120ps) at the same time. If both parts need to be 
replaced, you MUST first replace one part and then power ON the Printer 
until it completely initializes. Then you can power OFF the Printer and 
replace the other part.
Failing to follow these simple rules can cause serious 
problems for the printer. Installing previously used 
PrintMech PCAs orMedia Advance Encoder PCA can cause 
the printer to hang up during initialization, affect postcript 
capabilities, and erase all printer calibrations.
The printer could become unusable.
What to do if the Front Panel is blank
If the Front Panel is blank, refer to the system error code 08:YZ instructions 
that apply to the printer model affected. See 
08:YZ (T1100/T1100ps/T610 
ONLY) on page 2-10 or 08:YZ (T1120/T1120ps ONLY) on page 2-10.










