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Removal and Installation
 
HP Designjet Ultra Low End Printer Service Manual
5. Remove 3 T-10 (Type B) screws that 
secure the Electronics Module and the 
Power Supply Unit to the Printer.
Following step not applicable to 
Designjet 10ps, 20ps, 30, 30n, 
50ps
6. Remove the Plastic Cover from the Printer.
7. Remove 1 T-10 screw that secures the 
Electr
onics Module.