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HP Designjet 5000 and 5500 Series Printers - TWI: System Error 0Axxxx, APS Issues

	Parts required (part numbers are subject to change)
	Troubleshooting steps
	Performing service tests, service utilities and service calibrations

Document number: BPP90143

Last Updated: 04-Dec-2002

Minimum skill level: 2

An error has occurred in the Air Pressurization System (APS). Ink cartridges, pinched or damaged tubes, or a faulty APS most commonly cause these errors. Follow the steps listed below to determine the actual cause of the error and to replace the necessary parts.

Parts required (part numbers are subject to change)

Part description	HP Designjet 5000 series models - C6090A/V, C6091A/V, C6095A/V, C6096A/V	HP Designjet 5500 series models - Q1251A/V, Q1252A/V, Q1253A/V, Q1254A/V
Air Pressurization System (APS) (Required)	C6090-60084	C6090-60084
Ink Tubes System (Required)	C6090-60058 (Dye) 42-inch C6090-60232 (UV) 42-inch C6095-60186 (Dye) 60-inch C6095-60231 (UV) 60-inch	C6090-60058 (Dye) 42-inch C6090-60232 (UV) 42-inch C6095-60186 (Dye) 60-inch C6095-60231 (UV) 60-inch
#81 Dye-based Ink Cartridges (Optional)	C4930A (B), C4931A (C), C4932A (M), C4933A (Y), C4934A (LC), C4935A (LM)	C4930A (B), C4931A (C), C4932A (M), C4933A (Y), C4934A (LC), C4935A (LM)
#83 UV-based Ink Cartridges (Optional)	C4940A (B), C4941A (C), C4942A (M), C4943A (Y), C4944A (LC), C4945A (LM)	C4940A (B), C4941A (C), C4942A (M), C4943A (Y), C4944A (LC), C4945A (LM)

NOTE: If Removal and Installation instructions are needed for reference during any repairs performed, refer to the 5000 and 5500 Series Service Manual available on the Partner 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, 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. Verify the current firmware is A.02.07 or higher, upgrade if needed.
6. Remove and re-install all ink cartridges and attempt to verify functionality.
7. Replace the affected ink cartridge(s) and attempt to verify functionality.
8. Ensure the tubes of the APS tube system are not pinched or damaged, correct as needed (refer to pages 8-25 of the service manual).
9. Check the APS cable connections and ensure cables are not pinched or damaged (refer to pages 8-67 of the service manual). Fix as needed and attempt to verify functionality.

WARNING: To prevent possible injury, always remove the power cable from the back of the printer before connecting/disconnecting any internal printer cables or performing any repairs.

10. If the problem persists, replace the APS system (refer to pages 8-67 of the service manual).
11. Following replacement, turn the printer on and perform a Service Station calibration (instructions below).
12. Following the calibration, turn the printer off, then on, and attempt to verify functionality.
13. If the problem persists following replacement of the APS system, replace the Ink Tubes system (refer to pages 8-25 of the service manual).
14. Following replacement, turn the printer on and perform a Service Station calibration (instructions below).
15. Following the calibration, turn the printer, off then on, and verify 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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