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HP Designjet CP Series Printers - Bail Lift Issues

	Parts required (part numbers are subject to change)
	Troubleshooting steps
	Bail test
	Performing Service Diagnostic tests

Document number: BPP90105

Last updated: 14-Jan-2003

Minimum skill level: 2

The Bail assembly will not lift for a variety of reasons. Some of the causes include media jams, defective Bail stepper motor, or damage to the Bail assembly. 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)

Part Description	Models - C4703A, C4704A, C6085A	Models - C4723A, C4724A, C6084A
Bail Stepper Motor (Required)	C4704-60040	C4723-60040
Bail Assembly (Required)	C4704-60329	C4723-60279

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

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.
2. Lift the Top cover and check for a paper jam or other physical obstruction to Bail movement. If a paper jam has occurred, lower the media lever and remove paper. Check that paper is completely removed by looking for any small pieces in paper path.

NOTE: A manila file folder may be used to clear debris from media path.

3. Check carriage movement manually. The carriage should contact both the far-right and far-left plastic housings.
4. Move the carriage and cutter back to home position (carriage far right, cutter far left).
5. Manually raise and lower bail to check for freedom of movement. Check bail for damage; replace the bail assembly if needed (refer to pg. 8-58 of the Service Manual). Following replacement, attempt to verify functionality.
6. If no problem is found with the bail or the problem persists, perform the Bail test as instructed below.

Bail test

1. Enter the Diagnostic menu (instructions listed below).
2. Open the Top cover.
3. Scroll to D11 Bail and press Enter.
4. Watch the bail assembly for movement during the test.
5. When the test is finished, the message "D1100 Done" will be displayed on the front panel.
6. If the bail moves up and down during the test, the test has passed. Attempt to verify functionality.
7. If the bail does not move or problems persist, replace the bail stepper motor (refer to pg. 8-62 of the Service Manual).
8. Following replacement, verify printer functionality.

Performing Service Diagnostic tests

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 and 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 Diagnostics and press Enter.
7. Use the Arrow keys to scroll through the specific diagnostic tests, and press Enter when the required 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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