HP P2055 Manual

							Required tools 
●#2 Phillips screwdriver with a magnetic 
tip and a 152-mm (6-inch) shaft length
● Small flatblade screwdriver
● Needle-nose pliers
● ESD mat (if one is available) or ESD strap
● Penlight (optional)
CAUTION:
Always use a Phillips screwdriver  (callout 1). Do not use a pozidrive screwdriver (callout 2)
or any motorized screwdriver. These can damage screws or screw threads.
CAUTION: Avoid pulling directly on wires to disconnect  wire-harness connectors. Pull on the plastic
body of a connector to avoid damaging the connector wires.
Figure 6-1   Phillips and po zidrive screwdriver comparison
ENWW Required tools 99 
						

							Before performing service
●Remove all media from the product.
● Turn off the power using the power switch.
● Unplug the power cable and interface cable or cables.
● Place the product on an ESD mat (if one is availabl
e) or use an ESD strap. If an ESD workstation,
mat, or strap is not available, ground your self by touching the sheet-metal chassis  before touching
an ESD-sensitive part.
● Remove the print cartridge. See 
Print cartridge on page 102
.
● Remove the Tray 2 cassette.
After performing service
●Plug in the power cable.
● Reinstall the print cartridge.
● Reinstall the Tray 2 cassette.
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							Post-service test
When service is complete, use these tests to make sure that the repair or replacement was successful.
Print-quality test
1.Verify that you have completed  the necessary reassembly steps.
2. Make sure that the input tray  contains clean, unmarked paper.
3. Attach the power cord and interface cable, and then turn on the product.
4. Verify that the expected startup sounds occur.
5. Print a configuration page, and then verify that the expected printing sounds occur.
6. Print a demo page, and then verify t hat the print quality is as expected.
7. Send a print job from the host computer, and then  verify that the output meets expectations. For
HP LaserJet P2050 Series Printers, print a duplex page.
8. If necessary, restore any cu stomer-specified settings.
9. Clean the outside of the product with a damp cloth.
ENWW Post-service test 101 
						

							Print cartridge
CAUTION:If toner gets on any clothing, wipe it off with  a dry cloth and wash the clothing in cold water.
Hot water sets toner into the fabric .
1.Open the print-cartridge door.
2. Grasp the handle on the print cartridge, and th en pull the cartridge up and out of the product.
CAUTION:When the print cartridge is removed, do not expo se it to direct or strong light. Protect
the print cartridge by placing a sheet of paper over it.
Figure 6-2   Remove the print cartridge
3.Close the print-cartridge door.
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							Tray 2 cassette
Pull the tray straight out of the product to remove it.
Figure 6-3  Remove the Tray 2 cassette
ENWW Tray 2 cassette 103 
						

							Rollers and pads
Pickup roller; Tray 1
CAUTION:Do not touch the roller surface unless you are  replacing the roller. Skin oils on the roller
can cause paper pickup problems.
1. Press the print-cartridge door button (callout  1), and then open the print-cartridge door.
Figure 6-4   Remove the pickup roller; Tray 1 (1 of 5)
1
2.Rotate the roller cover up and away from the roller assembly.
Figure 6-5   Remove the pickup roller; Tray 1 (2 of 5)
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							3.Release two tabs.
Figure 6-6   Remove the pickup roller; Tray 1 (3 of 5)
4.Rotate the pickup roller away from the product.
Figure 6-7   Remove the pickup roller; Tray 1 (4 of 5)
ENWW Rollers and pads 105 
						

							5.Remove the pickup roller.
Figure 6-8   Remove the pickup roller; Tray 1 (5 of 5)
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							Pickup roller assembly; Tray 2
CAUTION:Do not touch the roller surface unless you are re placing the roller. Skin oils on the roller
can cause paper-pickup problems.
1. If the Tray 2 cassette has not yet been removed to service the product, remove the cassette. See
Tray 2 cassette on page 103.
2. Carefully place the product front-side up.
NOTE: Debris can scratch or damage the back of th e product. Before you place the product front-
side up, remove any debris from the work surface.  If possible, set the product on a clean, dry cloth
to prevent scratching and damage.
Figure 6-9   Remove the pickup roller assembly; Tray 2 (1 of 5)
ENWW Rollers and pads 107 
						

							3.Use a small flat blade screwdriver to release one t ab (callout 1), and then rotate the locking collar
toward the inside of the product.
Figure 6-10   Remove the pickup roller assembly; Tray 2 (2 of 5)
4.Slide the collar away from the rollers.
Figure 6-11   Remove the pickup roller assembly; Tray 2 (3 of 5)
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