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In this document:
KRS document number: BPP90029
Last updated: 28-Feb-2002
Minimum skill level: 2
End of Support Drawer Statement
Hewlett-Packard guarantees support for five years after the end of production of its large format printers. Since the HP Designjet 650C has been out of production for a number of years, the parts and sub-assemblies may no longer be available to complete the repair. If the customer has a service agreement or contract, follow normal contract call logging processes (regardless of parts availability).
If the printer is not covered by a service agreement or contract, notify the customer about parts availability issues that will limit the ability to perform printer repairs. Inform the customer about the benefits of HP's Trade Up program, and give them the Trade Up Web site http://www.hp.tradeups.com/login/login.asp. If the customer needs help in locating a local reseller, give them the reseller contact Web site at http://www.hp.com/usa/reseller/index.html. If the customer still requests service and parts are available, follow normal trade call logging processes to avoid escalation. If parts are unavailable for the needed service, do not log a CSO.
Introduction
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.
Parts required (part numbers are subject to change)
Clean the drive roller
- Using the arrow buttons, scroll to SERVICE TESTS X motion control, and press ENTER.
- Remove Media Press Enter 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 the ENTER button.
- Press the UP arrow button until the drive roller reaches a convenient speed for cleaning.
- Using a lint free cloth dampened with water, thoroughly clean the entire drive roller surface while it is rotating.
- Press the ENTER button to stop the roller.
- Press the ENTER button to return to the Service Tests menu.
- Press the PREVIOUS button 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 8.5 x 11) two times each, to prove product functionality.
- If loading is unsuccessful, or problems persist, continue with the remaining steps.
Check/replace 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, perform the media sensor calibration as listed towards the end of this document.
- 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) 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.
- Remove the
media spindle from the printer.
- Check the
right rollfeed assembly for ease of rotation, and for damaged/missing teeth. Use the eraser end of a pencil to move the
rollfeed
assembly.
- If the rollfeed assembly moves easily, does not move at all, or damaged/missing teeth on assembly are noticed, replace the
right rollfeed
assembly.
- After replacement of the right
rollfeed, reassemble the printer.
- Verify printer functionality. Perform media loading procedure with both roll and sheet (preferably larger than 8.5 x 11) media, two times each.
- If media loads correctly, the problem has been solved.
- If no problems with the right rollfeed assembly are noticed or the problem is not solved, continue with the remaining steps.
- 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 Drop Detect and Accuracy calibrations as listed below.
NOTE: The
overdrive assembly should only be replaced if noticeable damage is present. If
overdrive is replaced perform the Drop Detect and Accuracy calibrations as listed below.
Media Sensor calibration
- Press ENTER at the Status display.
- Use the arrow buttons to scroll to the Utilities menu, and press ENTER.
- Simultaneously press the ENTER and UP arrow buttons to access the Service test submenu.
- Using the arrow buttons, scroll to Media Sens Calib and press ENTER.
- Follow the instructions on the printer's display to complete the calibration.
- Power cycle the printer to store the new threshold value in the EEROM.
- Verify functionality by successfully loading roll and sheet media, two times each.
Drop Detect calibration
- Press ENTER at the Status display.
- Use the arrow buttons to scroll to the Utilities menu, and press ENTER.
- Simultaneously press the ENTER and UP arrow buttons to access the Service test submenu.
- Using the arrow buttons, scroll to Drop Detect Calib and press ENTER.
- Press the ENTER button when calibration is complete.
Accuracy calibration
- Use a sheet approximately 24 x 36 inches, or roll media. To get the best results for an Accuracy calibration, a polyester/matte film should be used.
NOTE: If a polyester or matte film is not available use HP Coated media when performing an Accuracy calibration.
- Load the media. If using D-size media (24 x 36 inches) load the short edge as the leading edge in 24-inch models, and the long edge as the leading edge for 36-inch models. E-size media (36 x 48 inches) can also be used on 36-inch models.
- Press ENTER at the Status display.
- Use the arrow buttons to scroll to the Utilities menu, and press ENTER. Set menu mode to full if not already in full mode.
- Simultaneously press the ENTER and UP arrow buttons, to access the Service Test menu.
- Using the arrow buttons, scroll to Accuracy Calib, and press ENTER.
- Press the UP arrow button to select Create plot. A Creating calibration plot message will be displayed.
- Wait until the Remove media / Continue message displays, then remove the media.
- Press the DOWN arrow button to Continue. The Create plot / Measure plot message displays.
- Press the DOWN arrow button to select Measure plot.
- Rotate the plot so that the edge with arrows point to the leading edge, reload the plot with print side down.
- The printer will load the plot and measure the alignment marks using the Edge sensor on the pen Carriage.
- Press the DOWN arrow button to continue when the Calibrate done / Continue message is displayed and the plot is fed out. The Accuracy calibration is now complete.
- Verify printer functionality. Perform media loading procedure with roll and sheet (preferably larger than 8.5 x 11 inches) media, two times each.
Copyright (C) Hewlett-Packard Co. 2000
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.
