HP 6KD23-67003 XL3600 Carriage PCA is a service board for the carriage assembly in compatible HP DesignJet XL 3600 multifunction printers. It is identified as the XL3600 Carriage PCA, giving the replacement part a clear role within the printer’s carriage system.
The listed applications include the HP DesignJet XL 3600 36-inch multifunction printer and XL 3600dr, including configurations with PostScript/PDF. This makes the part relevant to servicing those named XL 3600 models. The product listing describes it as a board and identifies the full part number as 6KD23-67003.