hp color laserjet, 2830, 2840 parts, service manual

7/24/2019 HP Color LaserJet, 2830, 2840 Parts, Service Manual

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Removing the print-cartridge carousel

1 Remove the following covers and assemblies:

Formatter cage (see Removing the formatter cage)

Fuser assembly (see Replacing the fuser assembly)

Left support assembly (see Removing the left support assembly)

Right support assembly (see Removing the right support assembly)

Air duct (see Removing the air duct and fan)

Rotary-drive assembly (see Removing the rotary-drive assembly)

Top plate (seeRemoving the top plate)

2 Remove two screws (callout 1) from the back of the device.

Figure 5-78 Remove the print-cartridge carousel (1 of 3)

Reinstallation tip Because the remainder of the print-cartridge carousel removalprocedures are performed from the left, right, and front of the device, it is easy to forget toreplace the two screws at the back of the device.

ENWW Main assemblies 199


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3 Press the white plastic tab (callout 2) at the left side of the device to release the left swing-shaftbushing, and then rotate the bushing to a vertical position.


4 On the right side of the device, repeat step 3 on the right swing-shaft bushing.

Examine the positions of the left pressure-shaft holder (callout 3), the right pressure-shaft holder(callout 4), and the pressure-shaft gear (callout 5) before you perform step 5. The pressure-shaftholders must be reinstalled to their correct positions when reinstalling the print-cartridge carousel.

200 Chapter 5 Removal and replacement ENWW


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5 Use the flatblade screwdriver to pry two white tabs on the pressure-shaft holders from theirseated positions in the rear frame assembly.




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6 Lift the print-cartridge carousel out of the device.

Incorrect reinstallation of the "feet" is shown, followed by correct installation.

Figure 5-81 Installation of feet (1 of 2)

Figure 5-81 Installation of feet (2 of 2)

Also make sure that the tab on the pressure-shaft gear points down.

Figure 5-82 Correct gear placement

7 After replacing the print-cartridge carousel, run a print-quality test (seeTest 1 (print-quality test))and a copy-quality test (seeTest 2 (copy-quality test)).



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NOTE If you are servicing an HP Color LaserJ et 2840 all-in-one, run a fax-quality test(seeTest 3 (fax-quality test)) and a memory-card test (seeTest 4 (memory-card test)) aswell.

Aligning the carousel gears

Make sure that the gears in the print-cartridge carousel are aligned correctly before placing thecarousel back into the device.

1 Rotate the carousel so that the marker for the yellow print cartridge faces the front of the device.

2 Examine the gears: two marks on the smaller gear should line up with the single mark on thelarger gear (see the detail of the gears in Figure 5-83 Reinstall the print-cartridge carousel).

NOTE The single mark on the larger gear is adjacent to the slot for the black cartridge,marked with a "K."

3 If the gears are not aligned correctly, locate the marks on the gears and realign the gears.

Figure 5-83 Reinstall the print-cartridge carousel



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Removing the registration-roller assembly

1 Remove two screws (callout 1) from the registration-shutter assembly.

Figure 5-84 Remove the registration-roller assembly

2 Rotate the registration-roller assembly toward the front of the device and then lift it towards the

rear of the device and up to remove it from the device.3 After replacing the registration-roller assembly, run a print-quality test (seeTest 1 (print-quality

test)).

Removing the toner-catch tray

The toner-catch tray is secured by two tabs underneath the tray (seeFigure 5-85 Remove the toner-catch tray), toward the front of the tray.

1 Remove the print cartridges (see Replacing the print cartridges) and the imaging drum (seeReplacing the imaging drum).

2 Release one tab on either side of the toner-catch tray and then pull the tray approximately 2 or 3

mm (approximately 0.125 inch) toward the front of the device to make sure that the tab does notreattach as you perform the next step.



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4 Remove the power supply assembly (see Removing the power supply cover plate), and thenremove the plastic protector sheet from the bottom of the device.

Figure 5-86 Replacing the feed-drive shaft and belts (1 of 8)

5 Lay the device on its back.


hp color laserjet, 2830, 2840 parts, service manual

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