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HP Designjet CP Series Printers - Switch Power Off / Check Paper Path

	Parts required (part numbers are subject to change)
	Troubleshooting steps
	Perform the Media Axis Diagnostic Test
	Performing Service Calibrations

Document number: BPP90054

Last updated: 13-Jan-2003

Minimum skill level: 2

A shutdown has occurred along the printers X-axis (media path). The most common causes of this message are a defective X-axis motor, or a media jam restricting platen movement. 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	2X00CP - C4703A, C4704A, C6085A	3X00CP - C4723A, C4724A, C6084A
X-Axis Motor Assembly (Required)	C4724-60053	C4724-60053

NOTE: If Removal and Installation instructions are needed for reference during any repairs performed, refer to the CP Series Service Manual available on the Computer Care Web site for review or download.

Troubleshooting steps

NOTE: Check that the media is not being loaded incorrectly (upside down), before continuing with the remaining steps listed in this document.

1. Check for jammed paper: if found, continue with Step 2; if no jam is detected, continue with testing the X-axis motor.
2. Slide the Carriage out of the way toward either side of the enclosed ends of the printer.
3. Lift the Pinchwheel lever to release pressure on the media.
4. Remove any of the jammed media that is easy to lift up and out from the top of the printer.
5. Pull the rest of the roll, or sheet media down and out of the entry slot where the media is loaded.
6. Check around the ends, front, and rear edges of the platen roller to verify that all of the torn media is removed. A manila folder can be used to remove jammed media from the media path.

CAUTION: Be careful when using a manila folder not to damage the media sensor located on the right side of the printer.

7. Lower the printer window, and the media lever.
8. Turn the printer on. After the printer initializes, press the Form Feed and Cut key to eject any pieces of media that might still be in the media path.
9. Reload media as normal. If using roll media, trim the edge so the media is straight before reloading (preventing another jam).
10. 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 functionality is proven no parts need to be replaced.
11. If loading is unsuccessful or problems persist, continue with testing the X-axis motor.

Perform the Media Axis Diagnostic Test

1. Make sure the printer is turned off from the power switch on the back of the printer.
2. Press and hold the Up Arrow key and the Enter key while turning the printer on.
3. Once the message Status/Ready is displayed on the front panel, press Enter.
4. Use the Arrow keys to scroll to Utilities and press Enter.

NOTE: Full menu mode must be set to access the Service Tests submenu. In the Utilities menu, scroll to Menu Mode and select Full.

5. Scroll to Service Tests and press Enter.
6. Scroll to Diagnostics and press Enter.
7. Scroll to D04 Media Axis and press Enter.
8. If the test passes, the "D0400 OK" message will appear (not expected). If this message appears, turn the printer off, then on and attempt to verify printer functionality. If problems persist, continue with Step 10.
9. If the test fails, a "D0401 Fail, D0402 Fail," or "D0403 Fail" message will appear. Continue with the remaining steps.
10. Replace the X-axis motor assembly (refer to pg. 8-66 of the service manual).
11. Re-assemble printer, and perform the C08 Accuracy calibration (listed below).
12. After performing the calibration, verify printer functionality by printing several internal prints.

Performing Service Calibrations

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.

NOTE: Continue to press both the Up Arrow key and the Enter keys until letters begin to scroll on the lower right corner of the front-panel display.

3. Once the message Status/Ready is displayed on the front panel, press Enter.
4. Use the Arrow keys to scroll to the Utilities menu display and press Enter.
5. Scroll to Service Tests and press Enter.
6. Scroll to Service Calibrations and press Enter.
7. Use the Arrow keys to scroll through the specific calibrations and press Enter when the required calibration is displayed.

NOTE: For the best results when performing the Accuracy calibration, use a Polyester Matte film. If Polyester Matte film is not available, use HP High Gloss or Heavy Coated media.

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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