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In this document:
KRS document number: BPP90038
Last updated: 22-Aug-2001
Minimum skill level: 2
Media is not loading or advancing properly through the printer. Common causes of this issue are the media sensor, overdrive clutch assembly, media spindle, or the right roll-feed assembly. In rare cases the printer's overdrive assembly may be causing the issue. Follow the steps listed in this document to accurately determine the cause of the failure and to replace the appropriate parts.
Parts required (part numbers are subject to change)
Part description
| Models -
C4705A/B,
C3195A, C4708A/B
| Models -
C4706A/B,
C3196A, C4709A/B,
C3198A/B |
Media Sensor Assembly (Required) |
C3190-60140 |
C3190-60140 |
Right Rollfeed Assembly (Required) |
C4704-60199 |
C4704-60199 |
Media Spindle (Required) |
C2847-60093 |
C2848-60011 |
Overdrive Gear Assembly (Required) |
C4705-60089 |
C4705-60089 |
Overdrive Assembly (Required) |
C4705-60121 |
C4706-60121 |
Cleaning the drive roller
- Turn the printer on.
- Press ENTER when printer completes initialization.
NOTE: Certain printer failures can occur that will prevent the printer from completing initialization. If this problem occurs, turn the printer off. Press and hold down the ENTER and UP Arrow buttons while turning on the printer, this will allow access to the Service tests submenu.
- Using the ARROW keys, scroll to the Utilities menu display, and press ENTER.
- Once inside the Utilities menu, press the ENTER and UP arrow keys at the same time to access the Service Tests menu.
- Using the ARROW keys, scroll to Service Tests 22 X Motion control, and press ENTER.
- The Remove Media Press Enter message should appear. Remove any media from the printer.
- Raise the printer's window (holding the window sensor down with a pen, pencil, or small screwdriver).
- Press ENTER.
- Press the UP arrow key until the drive roller reaches a convenient speed for cleaning.
- Using a lint free cloth/rag (dampened with water), thoroughly clean the entire drive roller surface while it is rotating.
- Press ENTER to stop the roller.
- Press ENTER to return to the Service Tests menu.
- Press PREVIOUS until Status Ready for Media is displayed.
- Allow the driver roller to dry.
- Try loading media.
- If loading is successful, repeat loading procedure with both roll and sheet media (preferably larger than 8 1/2 x 11 in) two times each, to prove product functionality.
- If loading is unsuccessful, or problems persist, continue with the remaining steps.
Checking or replacing the media sensor
Attempt to load media on the printer, noticing the operation of the drive roller. If, when loading media, the drive roller does not attempt to rotate, replace the media sensor. If the drive roller rotates, continue on with the remaining steps.
NOTE: If the media sensor is replaced, verify printer functionality by printing several internal prints (E or D size). If product functionality is proven, no other parts need to be replaced.
Checking or replacing the media spindle
- Remove the media spindle from the printer.
- Check the right side of the spindle for damaged or missing teeth. Replace the spindle if needed.
- If the spindle is replaced, load media onto new spindle, and try reloading media.
- If loading is successful, repeat loading procedure with both roll and sheet media (preferably larger than 8.5 x 11 inches) two times each, to prove product functionality.
- If loading media is unsuccessful, or no problem is found with the media spindle, continue with the remaining steps.
Checking or replacing the right roll-feed assembly
- Remove the media spindle from the printer.
- Check the right roll-feed assembly for ease of rotation, or for damaged or missing teeth. Use the eraser end of a pencil to move the roll-feed assembly.
- If the roll-feed assembly moves easily, does not move at all, or damaged and/or missing teeth on assembly are noticed, replace the right roll-feed assembly.
- After replacement of the right roll-feed, reassemble the printer to verify functionality.
- Verify printer functionality. Perform media loading procedure with both roll and sheet (preferably larger than 8.5 x 11 inches) media, two times each.
- If media loads correctly, the problem has been solved.
- If no problems with the right roll-feed assembly are noticed or the problem is not solved, continue with the remaining steps.
Checking or replacing the overdrive gear assembly or overdrive assembly
- Open the printer's window.
- Manually lift the bail assembly.
- Try turning the overdrive backwards by hand.
- If the overdrive moves backwards, replace the overdrive gear assembly.
- After replacing the overdrive gear assembly and reassembling the printer, perform the Accuracy calibration as listed below.
NOTE: The overdrive assembly should only be replaced if noticeable damage is present. If overdrive is replaced, perform the accuracy calibration as listed below.
Accuracy calibration
- 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 of approximately D-size (61 x 091 centimeters, 24 x 36 inches). Roll media may also be used. When using polyester film, load it with the matte (dull) side down.
NOTE: If a polyester or matte film is not available, use HP Coated media when performing an Accuracy calibration.
- Remove all media already loaded in the printer before performing the calibration.
- Press ENTER at the Status display.
- Use the arrow keys to scroll to the Utilities menu, and press ENTER.
- Simultaneously press the ENTER and UP arrow keys to access the Service test submenu.
- In the Service Tests submenu, scroll to 3C Accuracy Cal, and press ENTER.
- The message, Create pattern/measure pattern appears.
- Press the UP arrow key to select Create pattern.
- The message, Status/Calibrating appears while the printer is calibrating.
- When the printer has finished calibrating, the message, Load media for calibration appears.
- Load the media. If using D-size media, load the short edge as the leading edge in D-size printers and the long edge as the leading edge in E-size printers.
- When the media is loaded, the printer will automatically begin to plot the pattern.
- A message, Status/Printing appears while printing.
- Remove the media when the printer is finished printing.
- The message Create pattern/Measure pattern appears.
- Press the DOWN arrow key to select Measure Pattern.
- Rotate the plot so the edge with the arrows points toward the printer, and reload the plot with the arrow edge print-side down.
- The printer will load the plot and measure the alignment marks using the line sensor on the carriage.
- If the calibration passes, the message, Success Calibration/Press Enter appears.
- Press PREVIOUS until Ready is displayed on the printer's front panel.
- Turn off and turn on the printer before verifying printer functionality.
Verifying functionality
Print several internal prints (E or D size).
Copyright (C) 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.
