TWI Designjet Documents library presented here as a courtesy of
The owners of this website have no affiliation to Hewlett Packard nor do we claim to represent HP
in any way shape or form.
Return to TWI Documents Library Index Page
In this document:
System error 21:11 is generated when the printer cannot detect the Service Station or Aerosol Fan. Causes of this error can include the Service Station, Interconnect PCA, Interconnect PCA Cable or Electronics Module. Follow the steps listed below to accurately troubleshoot the issue, and replace the appropriate parts.
Service Station Assembly (Required)
Interconnect PCA (Required)
Interconnect PCA Cable (Required)
Electronics Module (Required)
NOTE: If Removal and Installation instructions are needed for reference during any repairs performed, refer to the HP Designjet 500 and 800 Series Service Manual available on the Computer Care Web site for review or download.
If any of the troubleshooting steps listed below solve the problem, attempt to verify printer functionality (instructions below). If functionality is verified, no additional parts should be replaced.
NOTE: The printer's current firmware revision must be A.02.04 or higher for a new Service Station to work properly. If firmware is lower than A.02.04, download the newest available firmware before continuing with the remainder of this document.
NOTE: If unable to release the Carriage by the previous process, remove the right end-cover and locate the main Service Station gear (as pictured in Figure 1 below) and rotate it counter clockwise approximately four revolutions. The Carriage assembly should now be free from the Service Station.
Figure 1: Service Station Gear
Figure 2: Service Station flag correctly positioned
NOTE: The printer firmware must be upgraded to A.02.04 or higher for the new Service Station to work. The new Service Station does not have an Aerosol fan and older firmware will check for the Aerosol fan, thus causing another system error.
Copyright Hewlett-Packard Co. 2001
This information is subject to change without notice and
is provided "as is" with no warranty.
Hewlett-Packard shall not be liable for any direct,
indirect, special, incidental or consequential damages
in connection with the use of this material.
Back to TWI Documents Library Index Page
|One Day Only Sale Item!
484-5 Black Compatible Laser / Fax Toner for Pitney Bowes
797-0 Red Compatible Postage InkJet Cartridge for Pitney Bowes
765-3 Red Compatible Postage InkJet Cartridge for Pitney Bowes
Q6718-67025 DesignJet Z series Plotter Service Station OEM New