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HP Designjet CP Series Printers - Ink System Error 73-YYYY

In this document:

The printer has detected an error in the ink system. Printing will be disabled until the error has been corrected. If more than one error is pending, the one with the highest number, corresponding to the most severe error will be displayed. The error data is as follows: 1000-Yellow, 0100-Cyan, 0010-Magenta, or 0001-Black. Example YYYY=0110: Cyan and Magenta. Use the steps listed in this document to accurately determine the cause of the failure and replace the appropriate parts.

Parts required (part numbers are subject to change)back to table of contents


Part Description

Models - C4703A, C4704A, C6085A

Models - C4723A, C4724A, C6084A

Ink System(s) (Optional) Send/Replace only failing ink system(s)

Black C1806A Dye C1892A UV Cyan C1807A Dye C1893A UV Magenta C1808A Dye C1894A UV Yellow C1809A Dye C1895A UV

Black C1806A Dye C1892A UV Cyan C1807A Dye C1893A UV Magenta C1808A Dye C1894A UV Yellow C1809A Dye C1895A UV

Lens Covers (Required)

C4704-60117

C4704-60117

Carriage Kit (Required)

C4723-60096

C4723-60096

Trailing Cable (Required)

C4704-60015

C4723-60237

Preventive maintenance Kit  (optional)

C4723-60141

C4723-60141

Troubleshooting stepsback to table of contents

If parts are replaced or fixed in any of the steps listed below, attempt to verify printer functionality by turning the printer on and printing internal test prints. If functionality is verified, no additional parts should be replaced.

  1. The printer has detected that one or more printhead cleaners have become dislodged or the line sensor cannot detect it.
  2. Press the Replace Ink System key to uncap the Service Station from the Carriage.
  3. Open the right end cover.
  4. Reseat the offending printhead cleaner(s).
  5. If unsuccessful, remove the suspected cleaner.
  6. Check the top surface of the cleaner for excess ink or other contaminates (white strip behind spit chamber). Clean the area around the white strip with a lint free cloth dampened with water, if unable to remove heavy amounts of ink, Liquid white-out may be used to cover remaining ink (creating the white line).
  7. Re-install the offending printhead cleaner. If accepted, attempt to verify functionality. If rejected replace the offending ink system and attempt to verify functionality.
  8. If problems persist, clean and/or replace the lens cover.
  9. Attempt to verify functionality, if problems persist perform a Line Sensor Service Test as instructed below.

Line Sensor Testback to table of contents

  1. Enter the Service Diagnostics menu (instructions listed below).
  2. Scroll to D02 Line Sensor and press Enter.
  3. Position the Line Sensor over the media using the Cancel and Form Feed and Cut keys (Cancel moves the Carriage to the left, Form Feed and Cut moves the Carriage to the right).
  4. If the test passes, the Green and Blue LED values are within specifications (Green LED V value between 7 and 10, Blue LED V value between 7 and 12). If passed, attempt to verify functionality.
  5. If the test fails (V values out of specifications), perform an Electronics test as described below.

Electronics Testback to table of contents

  1. In the Diagnostic submenu (instructions listed below), scroll to D01 Electronics and press Enter.
  2. Follow all instructions that appear on the front panel display during the test.
  3. If the test passes, perform a Carriage Axis Test and verify functionality.
  4. If the test fails, one of several error codes may appear. Use the list below to determine the failing component.
    1. D0101, D0102, D0103 - Replace the Electronics Module (not expected), refer to pg. 8-6 of the Service Manual.
    2. D0104 - Replace the Hard Disk Drive (not expected), refer to pg. 8-12 of the Service Manual.
    3. D0105, D0106 - Replace the Carriage and Trailing cable (most common). Refer to pg. 8-42, 8-36 of the Service Manual.
  5. Following replacement, perform Service Calibrations C01, C02, C03, C05, C06, C07 (2500/3500 only), C08 (instructions listed below).

Performing Service Calibrations or Service Diagnostic Testsback to table of contents

Following each calibration, turn the printer off to store the new calibration values in the EEROM. Turn the printer on (entering Service mode) and perform the next required calibration. Repeat this cycle until all necessary calibrations have been performed.

  1. Make sure the printer is turned off from the power switch on the back of the printer.
  2. Hold the Up Arrow key and the Enter key down while turning the printer on.
  1. Once the message "Status/Ready" is displayed on the front panel, press Enter.
  2. Use the Arrow keys to scroll to Utilities and press Enter.
  3. Scroll to Service Tests and press Enter.
  4. Scroll to Service Calibrations or Diagnostics and press Enter.
  5. Use the Arrow keys to scroll through the specific calibrations or Diagnostic Tests and press Enter when the required calibration/test is displayed.

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.

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