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HP Designjet 700 Series Printers - System Error 06030A

	Parts required (part numbers are subject to change)
	Perform a Mark Encoder Test
	Test the Line Sensor
	Cleaning the Drive roller
	Drop Detect calibration
	Line Sensor calibration
	Accuracy calibration
	Verify functionality

KRS document number: BPP90040

Last updated: 04-Dec-2001

Minimum skill level: 2

The Line sensor on the Carriage cannot find the Mark Encoder located on the left side of the Drive roller. A dirty Mark Encoder or malfunctioning Line sensor are the two biggest causes of this system error. In some cases the Mark Encoder may be missing from the Drive roller. Follow the instructions listed below to accurately troubleshoot the issue, replace the appropriate parts, and perform the necessary calibrations.

Parts required (part numbers are subject to change)

Part Description	Models - C4705A/B, C4706A/B	Models - C3195A, C3196A, C4709A/B, C4708A/B, C3198A/B,
Carriage Assembly (Required)	C4705-60054	C4708-60113
Trailing Cable (Required)	C3195-80009	C3195-80009
Mark Encoder (Required)	C3195-40032	C3195-40032

NOTE: The Mark Encoder is an optional part, send only if the Mark Encoder is visibly damaged or missing from the Drive roller.

Perform a Mark Encoder Test

1. Power the printer on, and wait for printer to initialize.

NOTE: Certain printer failures can occur that will prevent the printer from completing initialization. If this problem occurs, turn the printer off. Press and hold down the ENTER and UP Arrow buttons while turning on the printer, this will allow access to the Service tests submenu.

2. Press ENTER at the Status display.
3. Use the arrow buttons to scroll to the Utilities menu, and press ENTER.
4. Simultaneously press the ENTER and UP arrow buttons to access the Service test submenu.
5. If unable to see clearly through the printers window, raise the window and trip the window sensor with a small piece of paper, a pencil or pen cap.
6. In the Service Tests submenu, scroll to 23 Mark Position and press ENTER.
7. The Remove Media/Press Enter message is displayed on the front-panel. Remove media (if loaded) and press ENTER to start the test.
8. The Looking for the Mark message is displayed on the front-panel while the printer searches for the mark encoder.
9. If the test passes, the Mark Found/Press Enter message is displayed on the front-panel.

NOTE: If the Mark position test passes, continue with testing the Line Sensor as instructed below.

10. If the test fails, the Mark Not Found / Press Enter message is displayed on the front-panel.
11. Verify the Mark Encoder is attached to the Drive roller.

Figure 1: Mark Encoder attached to the Drive roller

12. If the Mark Encoder is damaged or missing, replace the Mark Encoder and perform an Accuracy calibration (listed below). If problems persist, continue with testing the Line sensor.

NOTE: If the Mark Encoder is replaced and printer functionality is verified, no other parts need to be replaced.

13. If the Mark Encoder is attached, clean the Mark Encoder with a lint free cloth dampened with water.
14. Continue with remaining steps.

Test the Line Sensor

NOTE: Use Bond or Coated media to perform this test.

1. In the Service Test submenu, scroll to 18 Edge Detect and press ENTER.
2. The Y Phys Pos = ##### / Sensor Reads = ### message is displayed.
3. Use the UP arrow to move the Carriage to the left and the DOWN arrow to move the Carriage to the right.
4. If the value (###) of Sensor Reads is less than 100 when passing over the Drive Roller then the Line sensor has passed the test.
5. If the value (###) of Sensor Reads is more than 110 when passing over the Media that is loaded then the Line sensor has passed the test. If both Sensor Reads are within range, perform a Drop Detect, Line Sensor and Accuracy calibration as described below. Following calibrations, power cycle the printer and attempt to verify functionality.
6. If the value (###) of Sensor Reads is not within the above required ranges the Line sensor has failed the test.
7. If the Line sensor fails test, or problems persist, continue with cleaning the Drive roller.

Cleaning the Drive roller

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 on.
2. Press ENTER when printer completes initialization.

NOTE: Certain printer failures can occur that will prevent the printer from completing initialization. If this problem occurs, turn the printer off. Press and hold down the ENTER and UP arrow buttons while turning on the printer, this will allow access to the Service tests submenu.

3. Using the ARROW keys, scroll to Utilities, and press ENTER.
4. Using the ARROW keys, scroll to Service Tests 22 X Motion control, and press ENTER.
5. The Remove Media Press Enter message should appear. Remove any media from the printer.
6. Raise the printer's window (holding the window sensor down with a pen, pencil, or small screwdriver).
7. Press ENTER.
8. Press the UP arrow until the drive roller reaches a convenient speed for cleaning.
9. Using a lint-free cloth (dampened with water), thoroughly clean the entire Drive roller surface while it is rotating.
10. Press ENTER to stop the roller.
11. Press ENTER to return to the Service Tests menu.
12. Press PREVIOUS until Status Ready for Media is displayed.
13. Allow the Drive roller to dry.
14. Perform the Line sensor test again (as instructed above).
15. If the test passes, attempt to verify functionality.
16. If the problem continues, replace the Carriage and Trailing cable, and perform the calibrations below in the order listed.

Drop Detect calibration

1. Turn the printer On.
2. Following initialization, enter the Service Tests submenu.
3. In the Service Tests submenu, scroll to 1C Drop Detect Cal and press ENTER.
4. The display shows the message Calibrating indicating that the calibration is in progress. Press ENTER when the calibration is complete.
5. Stay in Service mode to perform the next calibration.

Line Sensor calibration

1. In the Service Test submenu, scroll to 2C Line sensor cal, and press ENTER.
2. The display will show Calibrating Green LED Light, indicating the calibration is in progress.
3. When the calibration is complete, the display will show Green LED Light # _ _ / press Enter. The number shown corresponds to the intensity of the LED light, which will vary for different types of media. The normal range of the number should be between 0 and 56.
4. Press ENTER when the calibration is complete.
5. Stay in Service mode to perform the next calibration.

Accuracy calibration

1. Place a sheet of polyester film over the top of the printer for approximately 10 minutes to let it stabilize to the environmental conditions. Use a sheet of approximately D-size (61 x 91 cm, 24 x 36 in). Roll media may also be used. When using polyester film, load it with the matte (dull) side down.

NOTE: If a polyester or matte film is not available use HP Coated media when performing an Accuracy calibration.

2. Remove all media already loaded in the printer before performing the calibration.
3. In the Service Tests submenu, scroll to 3C Accuracy Cal, and press ENTER.
4. The message Create pattern/measure pattern appears.
5. Press the UP arrow button to select Create pattern.
6. The message Status/Calibrating appears while the printer is calibrating.
7. When the printer has finished calibrating, the message, Load media for calibration appears.
8. Load the media. If using D-size media load the short edge as the leading edge in D-size printers and the long edge as the leading edge in E-size printers.
9. When the media is loaded, the printer will automatically begin to plot the pattern.
10. The message Status/Printing appears while printing.
11. Remove the media when the printer is finished printing.
12. The message Create pattern/Measure pattern appears.
13. Press the DOWN arrow button to select Measure Pattern.
14. Rotate the plot so the edge with the arrows point toward the printer, and reload the plot with the arrow edge print-side down.
15. The printer will load the plot and measure the alignment marks using the line sensor on the Carriage.
16. If the calibration passes, the message Success Calibration/Press Enter appears.
17. Press the PREVIOUS key until Ready is displayed on the printer's front panel.
18. Turn off and turn on the printer before verifying printer functionality.

Verify functionality

Print several internal prints (E or D size).

Copyright (C) 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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