HP DesignJet Z2100

System Error Codes
2-8 Designjet Z Series — Service Manual
last supply you installed is defective. Replace it.
 If the System Error continues, replace the Main PCA  Page 6-163.
 If the System Error continues, replace the Left Ink Supply Station Page 6-
147 .
 If the System Error continues, replace the Right Ink Supply Station Page
6-143.
System Error: 01.3:YZ
Problem
Description:
Device I2C acumen Right Ink Supply Station failure.
Corrective Action: Try the following:
 Switch the Power OFF from the back of the Printer and disconnect the
Power cord. Reconnect the power cord and power On the Printer.
 Check that the cables between the Right Ink Supply Station and
PrintMech PCA are not damaged and are correctly connected.
 Perform the Ink Delivery System diagnostic test to troubleshoot the
problem further 
Page 3-38.
 If the System Error continues, replace the Right Ink Supply Station Page 6-
14 3 .
System Error: 02.1:YZ
Problem
Description:
Problem with the Carriage PCA.
Corrective Action: Try the following:
 Switch the Power OFF from the back of the Printer and disconnect the
Power cord. Reconnect the power cord and power On the Printer.
 Check that the Trailing Cable is not damaged.
 Check that the Trailing Cable is correctly connected between the Main
PCA and Carriage PCA.
 If the System Error continues, replace the Trailing Cable and Carriage
PCA Cover. 
Page 6-92.
 If the System Error continues, replace the Carriage PCA  Page 6-138.
 If the System Error continues, replace the Main PCA.  Page 6-163.
 Replace the Carriage Assembly  Page 6-100.
System Error: 03:YZ
Problem
Description:
Problem with Power Supply Unit.
Corrective Action: Try the following:
 Switch the Power OFF from the back of the Printer and disconnect the
Power cord. Reconnect the power cord and power On the Printer.
 Perform the Electronics Module Test Diagnostic to troubleshoot the
problem further 
Page 3-22.
 If the System Error continues, replace the Power Supply Unit (PSU)  Page
6-163.