HP 2000CP 2500CP - Manual (Page 130)

Service Calibrations 5-9 HP DesignJet CP Series Printers
C02. Refill
The purpose of this calibration is to ensure the correct position of the
carriage assembly in respect to the refill assembly.
Perform the Refill calibration whenever the:
D Carriage is disassembled or replaced
D Refill Assembly is disassembled or replaced.
D System Error 020006 appears on the front-panel display.
D Electronics Module is replaced.
When the Carriage Assembly, Refill Assembly or the Electronics Assembly
is ordered, a Refill Calibration Tool, a special Carriage height gauge and an
Instructions flyer will be included. You must follow the instructions in the
flyer in order to correctly calibrate the Refill Assembly and to make sure
that the Carriage is at the correct height.