CK834-67002PC Board - Main PCA & PSU Power Supply Unit - Controls and drives the printer - For the 44-inch DesignJet T1120SD/T1120/620 printer series
CK837-67005PC Board - Carriage PCA - Controls movement of carriage assembly - For the DesignJet T1120/620 printer series
CK837-67020PC Board - Encoder disk sensor assembly - For the DesignJet T1120SD/T1120/620 printer series
CK839-67001PC Board - Main PCA - Controls and drives the printer - For the 44-inch models in specific HP DesignJet series DesignJet T1120SD/T1120/620 printer series (for PSU and PCA CK834-67002)
CR647-67023PC Board - MSG signed analog encoder PC board (for calibration and alignment line sensor order Q6683-67004)
Q6687-67013PC Board - T1100/610 Main PCA & PSU 44 SVMain PCA - Includes the power supply unit and the engine board - For the 44-inch Designjet T1100/610 printer