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HP Designjet 5000 and 5500 Series Printers - TWI: System Error 0C0040

	Support Center Agents (Troubleshooting to be performed with customer)
	Parts required (part numbers are subject to change)
	CE Instructions
	Performing service tests, service utilities and service calibrations

Document number: BPP90145

Last Updated: 02-Jun-2003

Minimum skill level: 2

This system error appears when the printer detects that the same area of nozzles does not work in different printheads. The possible causes are either fibers or paper in the Drop Detect sensor, or that the Scan-Axis reference is incorrect. Follow the steps listed below to determine the actual cause of the error and to replace the necessary parts.

Support Center Agents (Troubleshooting to be performed with customer)

The steps below are designed to achieve remote resolution of the issue. If the troubleshooting steps below appear to resolve the issue, attempt to verify functionality by printing several internal prints. If the issue persists following the steps below, generate a CSO for service.

1. Turn the printer off, using the main power switch located on the back of the printer.
2. After 10-15 seconds, turn the main power switch on.
3. If no error appears, attempt to verify printer functionality.
4. If the error re-appears, continue with the remaining steps.
5. Attempt to manually recover the printheads:
1. Using the Arrow keys, scroll to the Printhead menu (the Printhead icon is on the lower right corner of the front panel display) and press ENTER.
2. Scroll to Recover Printheads and press ENTER.
3. Re-cover the offending printhead(s).
6. If the error re-appears or problems persist, continue with the remaining steps.
7. Check the drop detector for paper or fiber contaminants, and remove as needed (the drop detector is located on the side of the service station). If cleaned, attempt to verify functionality.
8. If problems persist, perform the calibrations listed below in the order of their appearance:
1. Scan-Axis calibration
2. Service Station calibration
3. Accuracy calibration

NOTE: The Scan-Axis calibration requires the full width of media that the printer supports. The 60-inch models require 60-inch wide media, and the 42-inch models require 42-inch wide media. A 24 or 36-inch roll of media may be cut to 60 or 42 inches long and used for this procedure.

9. If the problem persists, generate a CSO for service (send ALL required parts as listed below).

Parts required (part numbers are subject to change)

Part Description	5000 Series Models - C6090A/V, C6091A/V, C6095A/V, C6096A/V	5500 Series Models - Q1251A/V, Q1252A/V, Q1253A/V, Q1254A/V
Service Station Assembly (Required)	C6090-60083	C6090-60083
Line Sensor (Required)	C6090-60285	Q1251-60074

CE Instructions

If any of the troubleshooting steps (including parts replacement) listed below solve the problem, attempt to verify printer functionality by printing several internal prints. If functionality is verified, no additional parts should be replaced.

NOTE: If removal and installation instructions are needed for reference during any repairs performed, refer to the HP Designjet 5000 and 5500 Series Service Manual available on the HP Partner Care Web site (http://partner.americas.hp.com/) for review or download.

1. Replace the service station assembly (refer to pages 8-69 of the service manual).
2. Following replacement, turn the printer on (entering Service mode as instructed below).
3. Perform a Scan-Axis calibration, Service Station calibration, and an Accuracy calibration (in the order listed).
4. Following the calibrations, turn the printer off, then on, and attempt to verify functionality.
5. If the problem persists, replace the line sensor (refer to pages 8-53 of the service manual).
6. Following replacement, turn the printer on (entering Service mode as instructed below).
7. Access the Service Calibrations menu and perform the Scan-Axis, Service Station, and Accuracy calibrations.

NOTE: The Scan-Axis calibration requires the full width of media that the printer supports. The 60-inch models require 60-inch wide media, and the 42-inch models require 42-inch wide media. A 24 or 36-inch roll of media may be cut to 60 or 42 inches long and used for this procedure.

8. Following the calibrations, turn the printer off, then on and verify printer functionality.

Performing service tests, service utilities and service calibrations

1. Turn the printer on.
2. When the READY message is displayed on the front-panel, scroll to the Printer Setup Options icon and press ENTER.
3. Using the Arrow keys, scroll to Utilities and press ENTER.
4. Once inside the Utilities menu, press the Up Arrow key and the ENTER key simultaneously.
5. Scroll to the necessary menu (Service Tests, Service Utilities, or Service Calibrations) and press ENTER.
6. Once inside the appropriate menu, scroll to the needed test and press ENTER to start the test.

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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