System Error Codes

5Replace the Drop Detector. See Drop Detector on page 6-69.

6Reset the Calibration Flag of the Drop Detector. See Drop Detector Calibration on page 4-12.

7If the System Error continues, replace the PrintMech PCA. See PrintMech PCA (T1100, T1100ps, T610 ONLY) on page 6-73.

System Error:

55:YZ

Problem

Problem with the Line Sensor. The printer has detected a failure to access

Description:

Line Sensor EEPROM).

Corrective Action:

Try the following:

1Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reconnect the power cord and power On the Printer.

2Perform the Carriage Test to troubleshoot the problem further. See 4. Carriage Assembly on page 3-26

3Check the Line Sensor connections to the Carriage PCA.

4Replace the Line Sensor. See Line Sensor (T1100/T1100ps/T610) on page 6-152 or Line Sensor (T1120/T1120ps) on page 6-157.

5If the System Error continues, replace the Carriage PCA. See Carriage PCA (T1100/T1100ps/T610) on page 6-173 or Carriage PCA (T1120/ T1120ps) on page 6-178.

System Error:

56:YZ

Problem

Drive roller analog encoder sensor fail or calibration failed.

Description:

 

Corrective Action: Try the following:

1Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reconnect the power cord and power On the Printer.

2Perform the Media Path Test to troubleshoot the problem further. See 2. Paper Drive on page 3-18.

3Replace the Encoder Disk and Encoder Sensor. See Encoder Disk and Encoder Sensor on page 6-216.

4If the System Error continues, replace the Main PCA. See Starwheel Assembly on page 6-208.

System Error:

58:YZ

Problem

The Line Sensor of the printer is not functioning correctly. Either the Line

Description:

Sensor shutter has failed to open, there is a failure to communicate with the

 

Line Sensor, the Line Sensor is not calibrated correctly, or the firmware is not

 

compatible with the Line Sensor.

Corrective Action: Try the following:

1Switch the Power OFF from the back of the Printer and disconnect the power cord. Reconnect the power cord and power On the Printer.

2Perform the Line Sensor calibration.

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HP Designjet T Series — Service Manual