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HP Designjet 1000 Series Printers - TWI: Noise During Media Advance

	Parts required (part numbers are subject to change)
	Troubleshooting steps
	Service Calibration Mode
	Multi-roll feeder disassembly
	Removing the multi-roll feeder left side cover
	Removing the multi-roll feeder right side cover
	Installing covers

KRS document number: BPP90127

Last updated: 11-Feb-2003

Minimum skill level: 2

NOTE: Ensure the correct media related technical work instruction (TWI) is being applied to the issue. If media loading problems are occurring, use the Paper/Media will not Load TWI (bpp90155). If media skew issues are occurring, use the Paper/Media Skew TWI (bpp90153).

Noise may occur for a variety of reasons, not all of which indicate a hardware problem. Some possible causes are unsupported media, media of an unusual width, or overdrive assembly bushings. Use the steps below to determine the actual cause of the failure and to replace the appropriate parts.

Parts required (part numbers are subject to change)

Part description	Models - C6074A/B, C6075A/B
Synthetic Oil (Required)	C6072-60047
Center Platen Assembly (Required)	C6072-60161

NOTE: If the printer is installed on a multi-roll feeder accessory, some multi-roll disassembly is required to gain access to the printer. Instructions for multi-roll disassembly are listed at the bottom of this document for reference.

Troubleshooting steps

If any of the troubleshooting steps 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.

1. Check that the noise is occurring during media advance and not being confused with a different noise being exhibited by the printer.
2. If using roll media, check that the media is a standard-supported width (24-inch or 36-inch wide) and a supported HP media type, change as needed.

NOTE: If the left edge of the media is partially covering a vacuum hole, the vacuum may be causing media "chatter", because of partial vacuum hole coverage. The issue is media and HP recommends using supported HP media.

3. Load a sheet of media.
4. If the noise continues, unload the media and lubricate the center platen as described below:
1. Open the printer's top cover and trip the top cover sensor using a small piece of rolled up paper or a pen cap, etc.
2. On the printer's front panel, scroll to the Printer Setup Options Icon and press Enter.
3. Scroll to Utilities and press Enter.
4. Press the Up Arrow and Enter keys simultaneously.
5. Scroll to Service Utilities and press Enter.
6. Scroll to 5. Overdrive Cleaning and press Enter.
7. When the Overdrive begins turning, apply three to five drops of synthetic oil down the center 11 holes of center platen (as described in Figure 1 below) and the holes at the far ends of the center platen.

CAUTION: Do not exceed 10 drops per hole or put the oil into any or other holes. Excessive oil can potentially damage the overdrive or cause damage to other components.

Figure 1: Holes on center platen that require lubrication

5. Following lubrication, try loading a sheet media again.
6. If the noise recurs, repeat Steps 4 and 5 (not exceeding 10 drops in any of the holes).
7. If noise disappears, load roll media and attempt to verify functionality.
8. If the noise continues after reaching the maximum number of drops (10), replace the center platen (refer to pg. 8-62 of the Service Manual).

NOTE: If removal and installation instructions are needed for reference during any repairs performed, refer to the 1000 Series Service Manual available on the HP Partner Care Web site for review or download.

9. Following replacement, turn the printer on and perform the carriage height, service station and color-to-color calibrations (instructions listed below).

Service Calibration Mode

1. Turn the printer on.
2. At the Ready status, press Enter.
3. Scroll to Utilities and press Enter.
4. Inside the Utilities menu, press Up Arrow and Enter keys simultaneously.
5. Select Service Calibrations and press Enter.
6. Scroll to the necessary calibration and press Enter.
7. Following completion of all necessary calibrations, turn the printer off then on and verify functionality.

Multi-roll feeder disassembly

Only remove the corresponding side cover of the multi-roll that requires maintenance. For example, only remove the right side cover of multi-roll if only the right end cover of the printer requires removal to complete the necessary service. Follow the steps listed below to gain access to the printer to complete the necessary service.

NOTE: Only ONE CE needs to be dispatched to perform service on a 1000 series printer attached to a multi-roll feeder.

Removing the multi-roll feeder left side cover

WARNING: Turn both the printer and the multi-roll feeder off and disconnect them from the power source prior to performing any maintenance.

1. Open the left door of the multi-roll feeder.
2. Loosen the two screws that secure the left door to the multi-roll feeder (see Figure 1).

Figure 1: Screws to remove

3. Remove the left door.

CAUTION: Be careful not to break the door when removing it.

4. Remove the two orange star screws that secure the front top-cover to the multi-roll feeder (see Figure 2).

Figure 2: Two star screws to remove

5. Remove the multi-roll feeder top cover.
6. Remove the six T-20 screws that secure the left side cover to the multi-roll feeder from the front (see Figure 3).

Figure 3: Six screws to remove

7. Remove the seven T-20 screws that secure the left side cover to the multi-roll feeder from the rear (see Figure 4).

Figure 4: Seven screws to remove

8. Remove the left side cover (see Figure 5).

Figure 5: Removing the left side cover

Removing the multi-roll feeder right side cover

WARNING: Turn both the printer and the multi-roll feeder off and disconnect them from the power source prior to performing any maintenance.

1. Remove the right door and front top cover from the multi-roll feeder (follow Steps 1 - 5 of the previous section and remove the right door instead of the left).
2. Remove the six T-20 screws that secure the right side cover to the multi-roll feeder from the front (see Figure 6).

Figure 6: Six screws to remove

3. Remove the nine T-20 screws that secure the right side cover to the multi-roll feeder from the rear (see Figure 7).

Figure 7: Nine screws to remove

4. Open the rear top cover (see Figure 8).

Figure 8: Opening the rear top cover

5. Release the cable that is attached to the top of the right side cover (see Figure 9).

Figure 9: Cable to release

6. Remove the right side cover (see Figure 10).

Figure 10: Removing the right side cover

Installing covers

0. the procedures listed above, but in reverse order.

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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