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HP Designjet 1000 Series Printers - TWI: Excessive Fan Noise

	Parts required (part numbers are subject to change)
	Troubleshooting steps
	Multi-Roll feeder disassembly
	Removing the Multi-Roll feeder left side cover
	Removing the Multi-Roll feeder right side cover
	Installation of covers

KRS document number: BPP90125

Last Updated: 30-Oct-2001

Minimum skill level: 2

Noise will usually be attributed to the Aerosol Fan mounting becoming loose. On rare occasions the vacuum fan may make noise. Run electronics test to determine which fan is making noise. Follow the steps listed 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 - C6047A/B, C6075A/B
Right End Cover (Required)	C6072-60165
Vacuum Fan (Required)	C6072-60159

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. Turn the printer off.
2. Hold down the COLOR button while turning the printer on.
3. Continue holding the COLOR button until the Front panel displays Initializing, then release.
4. When the display shows Service Tests, scroll to the Electronics Systems test and press ENTER.
5. The Electronics Systems test will now start.
6. The test first checks the EEROM and DRAM functionality, then tests the fans.
7. The Aerosol fan is tested first, followed by the Vacuum fan.
8. If a vibration or other noise is present (during testing of the Aerosol Fan), try to tighten the screws on the bottom of the Right End Cover and rerun the test. If the noise reappears, replace the Right End Cover (refer to pg. 8-4 of the 1000 Series Service Manual). Following replacement attempt to verify functionality.

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

9. If a vibration or other noise is present (during the Vacuum Fan test), replace the Vacuum Fan (refer to pg. 8-11 of the 1000 Series Service Manual).
10. Following replacement, turn the printer 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 needing removed.

3. Remove the left door.

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

4. Remove the two star screws (Orange) that secure the Front top-cover to the Multi-Roll feeder (see Figure 2).

Figure 2: Two star screws needing removed.

5. Remove the Multi-Roll feeder top cover.
6. Remove 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 needing removed.

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 needing removed.

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 through 5 of the previous section and remove the right door instead of the left).
2. Remove 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 needing removed.

3. Remove 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 needing removed.

4. Open the Rear Top cover (see Figure 8).

Figure 8: Rear Top cover.

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

Figure 9: Cable needing released.

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

Figure 10: Removing the right side cover.

Installation of covers

0. the procedures listed above 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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