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HP Designjet 5500 Series Printers - Eaglejet TWI: Switch Power off, Check Printhead Path

	Service note information
	Contact center agents (troubleshooting to be performed with customer)
	Parts required (part numbers are subject to change)
	CE instructions
	Accessing service menus

Document number: BPP90211

Last Updated: 27-Aug-2003

Minimum skill level: 2

Introduction

The printhead carriage cannot move, or has difficulty moving freely. Common causes are obstructions in the carriage path, excess friction along the carriage path, worn or damaged Y-axis parts, and improperly installed ink supply tubes. Switch Power Off, Check Printhead Path (SPOCPHP) messages may appear with or without the numbers 1, 2, or 3 following it (troubleshoot all the same way).

Check Printhead Path 1, 2, or 3 details:

• SPOCPHP (1) - Friction or excess speed shutdown
• SPOCPHP (2) - Safety shutdown (carriage path is blocked)
• SPOCPHP (3) - Friction slowdown of carriage

Follow the steps listed below to determine the actual cause of the error and to replace the necessary parts.

Service note information

Service note description: Premature belt wear on the 5500 series, caused by a manufactures defect. All parts and travel costs are paid by division for this issue.

Printer model	Service note number
Eaglejet, Q1252V	Q1252V-01

Affected serial number range: SG3201402C - SG33Q14017

Contact 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 printer functionality by printing several internal prints. If the issue persists following the steps below, generate a CSO for service.

NOTE: The service note listed above may be applicable to this issue. The belt for the 5500 series printers have an issue with premature wear, which can lead to frequent check printhead path (1) error messages before the belt breaks. The premature belt wear is generally visible to the customer, and in most cases can be determined over the phone. Follow the detailed troubleshooting steps below to determine if the issue is related to premature belt wear, or related to other internal or external causes.

1. With the printer turned on, select the Printheads menu (icon in lower-right of the front panel display).
2. Using the Arrow keys, scroll to Replace printheads and press ENTER.
3. Open the printer's window when instructed to do so by the front panel.
4. Turn the printer off using the power isolation switch located on the back of the printer (next to the power cable).
5. Determine if the belt is exhibiting signs of premature wear:
• Frequent SPOCPHP (1) messages

NOTE: It is possible the error message may also be displayed as Check Printhead Path (2) or (3), but is not as common.

• Printer serial number falls within range specified by Division (starting SG3201402C, ending SG33Q14017)
• Inspect the belt itself for visible signs of wear
• Check where the belt turns around the Scan-axis motor (far-right of the printer) to see if black particles are visible as shown below:

NOTE: A flashlight may be needed to see inside the printer.

Figure 1: Premature belt wear at Scan-axis motor

• Check the entire length of the carriage belt for black particles lying underneath the belt

Figure 2: Carriage belt

6. If premature belt wear can be determined using the information in Step 4 above, generate a CSO for service, containing only the carriage belt.

NOTE: Ensure that the applicable service note is attached to WFM case for proper billing purposes.

7. If premature belt wear cannot be determined as being the cause, or additional problems are suspected, continue with the remaining steps.
8. If on, turn the printer off, using the main power switch located on the back of the printer.
9. Unload media and check for obstructions in the carriage path, remove as needed.
10. If media is jammed, follow the steps directly below. If no media jam is detected, continue with Step 11.
1. Slide the carriage out of the way toward either side of the enclosed ends of the printer (if needed).
2. Lift the pincharm lever.
3. Remove any of the jammed media that is easily lifted up and out from the top of the printer.
4. Pull the rest of the roll or sheet down and out of the entry slot where the media is loaded.
5. Check around the ends, front, and rear edges of the platen roller to verify that all of the torn media is removed. Use a manila folder to remove jammed media from the media path (take care not to damage the media sensor on the right side of the printer).
6. Lower the printer top cover window and the pincharm lever, then turn the printer on. After initialization, select Move Media, via the Media icon, to eject any pieces of media that might still be in the media path.
7. Reload the media as normal. If using roll, trim the edge so the media is straight before loading. Also, be sure not to load the media upside down.
8. If loading is successful, repeat loading procedure with both roll and sheet media, portrait style (preferably larger than 8 1/2 x 22 inches) two times each, to prove functionality. If everything works well, no parts need to be replaced.
9. If loading is unsuccessful or problems persist, continue with the remaining steps.
11. Turn the printer off using the main power switch.
12. Open the printhead cleaner door, located on the right side of the printer.
13. Manually pull the printhead cleaner tray forward (releasing the printhead carriage).
14. Lift the top cover window.
15. Clean the carriage slider rods and apply oil along the complete axis of the slider rods (3-4 drops on each rod spread on entire rod on top and towards the center of the rod).

NOTE: Cleaning and lubricating the carriage rail must be done prior to scheduling any onsite service for the product. This procedure often solves the issue without requiring service. The printer is shipped with a cleaning and lubing kit.

16. Manually move carriage left and right to help distribute oil under carriage bushings.

NOTE: Ensure the printhead latch is securely fastened down on the carriage. If not properly closed, the latch can impede carriage movement, thus generating the error message.

17. Close the top cover window.
18. Turn the printer on.
19. Load media and attempt to verify functionality by printing a customer file or internal prints.
20. 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	Eaglejet model - Q1252V
Scan-Axis Motor (Required)	C6090-60328
Carriage Belt (Required)	C6090-60072
Encoder Strip (Required)	C6090-60267
Ink Tube System (Required)	C6090-60232 (UV)
Carriage Assembly (Required)	Q1251-60070
Trailing Cable (Required)	C6090-60060
Tensioner (Required)	C6090-60327
Cutter (Required)	C6090-60094

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 for review or download.

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. If service is related to the service note listed above, replace the carriage belt and follow steps 2-5 below (refer to pages 8-46 of the Service manual). If the issue is not related to the service note continue with Step 6.
2. Clean or replace the lens cover.
3. Perform the following calibrations:
• Carriage Height
• Service Station
• Scan Axis

NOTE: Instructions for accessing the service menu are listed below.

4. Following successful calibrations, turn the printer off for at least 30 seconds, and then on, and perform a printhead alignment (Utilities, Calibrations, Printhead Alignment).
5. Verify printer functionality by printing customer or internal prints (issue should be resolved).

NOTE: The remaining steps are designed to resolve SPOCPHP messages that are not related to the premature belt service note.

6. Turn the printer off using the main power switch located on the back of the printer.
7. Open the printhead cleaner door, located on the right side of the printer.
8. Manually pull the printhead cleaner tray forward (releasing the printhead carriage).
9. Lift the top cover window.
10. Clean the carriage slider rods and apply oil along the complete axis of the slider rods.
11. Manually move carriage left and right to help distribute oil under carriage bushings. While moving the carriage, visually inspect the carriage belt and tensioner for damage or wear and replace as needed (refer to pages 8-46 of the Service manual).
12. Inspect the cutter assembly and fix or replace as needed (refer to pages 8-60 of the Service manual).
13. Turn the printer on, and enter the Service menu as instructed below.
14. Perform a Scan-axis test (Diagnostics menu).

NOTE: Full-width media must be used to perform this test. If printer is 60-inch model and no full-width media is available cut 36-inch media at a length of 60 inches to create a 60 x 36-inch sheet of media.

15. If either of the values displayed exceed their respective limits (FORWARDS Maximum PWM 225, BACKWARDS Maximum PWM 230), turn the printer off and lubricate the carriage rails again and re-run the scan-axis test.

NOTE: If the carriage does not move during the scan-axis test, replace the scan-axis motor (refer to pages 8-57 of the Service manual). Attempt to verify functionality before continuing with the remaining steps.

16. If the test fails for a second time, replace the carriage and trailing cable (refer to pages 8-46 and 8-36 of the Service manual).
17. Following replacement, turn the printer on.
18. Access the Service Calibrations menu as instructed below, and perform the Scan-Axis, Service Station, and Carriage Height calibrations.
19. Following the necessary calibrations, turn the printer off for at least 30 seconds, and then on and print customer or internal prints to verify printer functionality.

Accessing service menus

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. 2002
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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