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System Error Codes
HP Designjet 4000/4020 Printer Series Service Manual
System Error:
79:04
Problem
Description:
Generic Firmware error.
Corrective Action:
Try the following:
îš„ Switch the Power OFF from the back of the Printer and disconnect the
Power cord. Reconnect the power cord and power On the Printer.
îš„ Check that the Printer has the latest Firmware version. If not, update the
Firmware to the latest version.
System Error:
79.1:04
Problem
Description:
CDS server lost connection with client.
Corrective Action:
Try the following:
îš„ Switch the Power OFF from the back of the Printer and disconnect the
Power cord. Reconnect the power cord and power On the Printer.
îš„ Check that the Printer has the latest Firmware version. If not, update the
Firmware to the latest version.
System Error:
81: 01
Problem
Description:
Paper servo shutdown.
Corrective Action:
Try the following:
îš„ Open the Window and check for any visible obstacles restricting the
movement of the Drive Roller. If there is a wrinkled mass of media inside
the paper path, lift the Pinchwheels (using the Media Lever) and clear the
obstruction.
 Perform the "Media Drive" Diagnostic (⇒ Page 4-12) to further
troubleshoot the error code.
îš„
If the System Error continues, replace the Media-Axis Motor
⇒
Page 8-91.
System Error:
81: 03
Problem
Description:
It was impossible to correctly stop the servo before setting the encoder
position.
Corrective Action:
Try the following:
îš„ Open the Window and check for any visible obstacles restricting the
movement of the Drive Roller. If there is a wrinkled mass of media inside
the paper path, lift the Pinchwheels (using the Media Lever) and clear the
obstruction.
 Perform the "Media Drive" Diagnostic (⇒ Page 4-12) to further
troubleshoot the error code.
îš„
If the System Error continues, replace the Media-Axis Motor
⇒
Page 8-91.
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