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HP Designjet 400 Series Printers - Noise Along the Carriage Path

In this document:

Noise can usually be attributed to one of two (2) causes: two (2) surfaces rubbing together due to lack of lubrication, or a moving object hitting a stationary one. A few examples could be a dirty or dry slider rod, damage to the carriage belt, or debris in the back guide. 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

Model numbers - C4713A, C4715A, C6080A, C6082A

Model numbers - C4714A, C4716A, C6081A, C6083A

Cutter (Required) See note below

C4713-60040

C4713-60040

Anderol oil (Required)

6040-0858

6040-0858

Carriage (Required)

C4713-60039

C4713-60039

Carriage belt (Required)

C4705-60082

C4706-60082

Carriage motor (Required)

C4713-60092

C4713-60092

Encoder strip (Required)

C4713-60098

C4714-60098

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. Turn the printer off and open the top cover.
  2. Visually inspect the carriage-wheel guide at the back of the carriage.
  3. Use a clean lint-free cloth to clean any aluminum, dust, or ink particles from the rear wheel and guide track.
  1. Visually inspect the carriage belt for cracks, fraying, or general wear. Replace carriage belt as needed (refer to pages 8-41 of the HP Designjet 400 Series Service Manual).
  1. Use a lint-free cloth to wipe all foreign materials from the carriage-slider rod.
  2. Apply two (2) or three (3) drops of lubricant to a clean lint-free cloth and wipe the top and back of the slider rod. Ensure the entire length of the rod is covered (move the carriage and cutter as needed).
  3. Manually move the cutter and carriage assemblies along the slider rod to lubricate the bushings. Move each assembly left and right three (3) to four (4) times.
  4. If the Y-axis motor does not allow carriage to move freely, replace the Y-axis motor (refer to pages 8-18). Following replacement, perform an Accuracy calibration (listed below) and attempt to verify functionality.
  5. Place the cutter and carriage assemblies back to their respective home positions (carriage - far left, cutter - far right).
  6. If no problems are noticed in the above steps, load paper and attempt to verify functionality.
  7. If the noise persists, lubricate the carriage-slider rod again (Steps 1 through 7).
  8. If the noise continues, replace the carriage (refer to pages 8-37).
  9. Following replacement, perform an accuracy calibration (listed below) and attempt to verify functionality.
  10. If the problem persists, continue with the remaining steps.

Checking the encoder stripback to table of contents

  1. Turn the printer off and open the top cover.
  2. Using a lint-free cloth dampened with water, wipe the encoder strip from the left end to the right end. Move the carriage and cutter assemblies as needed, to reach the end of the strip. Replace the encoder strip if it is damaged (refer to pages 8-15).
  3. Following replacement, perform an accuracy calibration (listed below) and attempt to verify functionality.
  4. If no problem with the encoder strip is found or the problem persists, continue with the remaining steps.

Instructions for entering Service modeback to table of contents

    1. Hold the REPRINT key down and turn the printer on.
    2. Continue to hold the REPRINT key until LEDs on the front panel begin sequencing.
    3. Press the appropriate key(s) to perform the necessary test.
    1. Hold the MEDIA SOURCE key down and turn the printer on.
    2. Continue to hold the MEDIA SOURCE key until LEDs on the front panel begin sequencing.
    1. Press the appropriate key(s) to perform the necessary test.

Accuracy calibrationback to table of contents

  1. Place a sheet of polyester film over the top of the printer for approximately 10 minutes to let it stabilize to the environmental conditions. Use a sheet approximately 24 x 36 inches, 61 x 91 cm (D-size). If sheet media is not available, roll media can be used if cut into a 24 X 36 inch sheet. When using polyester film, load it with the matte (dull) side down.
  1. Turn the printer off.
  2. Press and hold in the MEDIA SOURCE key and turn the printer on (entering Service mode 2).
  3. Set the Media Type on the front panel to Coated Paper.
  4. Load the film with the matte (dull) side down, in portrait orientation.
  5. When the Ready LED lights up, press the REPRINT key.
  1. The printer will eject the sheet, and the Load Media LED will light up.
  2. Unload the sheet from the printer.
  3. Wait until the ink on the sheet is dry.
  4. Cut the sheet along the dotted line and reload it facedown into the printer in the direction indicated by the arrows on the calibration plot.
  1. Unload the sheet from the printer.
  2. The Accuracy calibration is now complete.
  3. Turn the printer off then on, and verify printer functionality.

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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