HP P 1100 Service Manual

							Electrostatic discharge
CAUTION: Some parts are sensitive to electrostatic discharge (ESD). Look for the ESD reminder
when removing product parts. Always perform service work at an ESD-protected workstation or mat, or
use an ESD strap. If an ESD workstation, mat, or strap is not available, ground yourself by touching the
sheet-metal chassis  before touching an ESD-sensitive part.
Protect the ESD-sensitive parts by placing them in ESD pouches when they are out of the product.
Required tools 
● #2 Phillips screwdriver with a magnetic tip and a 152-mm (6-inch) shaft length
● Small flat-blade screwdriver
● Needle-nose pliers
● ESD mat or ESD strap (if one is available)
● 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.
Figure 2-1   Phillips and pozidrive screwdriver comparison
ENWW Electrostatic discharge 33 
						

							Before performing service
●Remove all paper 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 workstation or mat, or use an ESD strap (if one is available). If an
ESD workstation, mat, or strap is not available, ground yourself by touching the sheet-metal chassis
before touching an ESD-sensitive part.
● Remove the print cartridge.
After performing service
●Plug in the power cable.
● Reinstall the print cartridge.
● Load paper in the product.
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							Post-service test
Perform the following test to verify 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 tray contains clean, unmarked paper.
3. Attach the power cord and interface cable or interface cables, 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 that the print quality is as expected.
7. Send a print job from the host computer, and then verify that the output meets expectations.
8. Clean the outside of the product with a damp cloth.
ENWW Post-service test 35 
						

							Parts removal order
Figure 2-2  Parts removal order
Input tray
Front cover
 Left cover
Right cover
Laser/scanner assembly
Formatter PCA
Face-down cover
Main motor
Wireless PCA (Wireless models)
Engine controller PCA
Cartridge door
Rear coverPickup assembly
(and separation pad)
Fuser
Pickup solenoid
Output tray
Light pipe
Wireless buttonCancel button
Right cover
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							Pickup roller
CAUTION:Do not touch the sponge portion of the roller. Skin oils can cause paper handling problems.
1.Release two tabs.
Figure 2-3   Remove the pickup roller (1 of 2)
2.Rotate the roller away from the product to remove it.
Figure 2-4   Remove the pickup roller (2 of 2)
ENWW Pickup roller 37 
						

							Separation pad
CAUTION:Do not touch the sponge portion of the pad. Skin oils can cause paper handling problems.
1.Place the product rear-side up to access the separation pad assembly.
CAUTION: Dirt and debris can scratch the product covers. Place the product on a cloth or other
clean surface.
2. Remove two screws (callout 1) and then remove the separation pad assembly (callout 2).
Figure 2-5   Remove the separation pad assembly
2
1
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ENWW 
						

							Transfer roller
CAUTION:Do not touch the sponge portion of the roller. Skin oils can cause print quality problems.
1.Open the print-cartridge door.
2. Release two tabs (callout 1), and then remove the transfer roller (callout 2).
Figure 2-6   Remove the transfer roller
12
ENWW Transfer roller 39 
						

							Covers
Input tray or main-input tray
Open the tray (callout 1), release two tabs (callout 2), and then remove the tray.
Figure 2-7  Remove the tray
1
2
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							Output bin tray extension
Release two pins (callout 1), and then remove the tray extension (callout 2)
Figure 2-8  Remove the output bin tray extension
1
2
ENWW Covers 41 
						

							Front cover
Before proceeding, remove the following components:●Input tray or main-input tray. See 
Input tray or main-input tray on page 40.
● Output bin tray extension. See 
Output bin tray extension on page 41.
Remove the front cover
1.
Place the product rear-side up.
CAUTION: Dirt and debris can scratch the product covers. Place the product on a cloth or other
clean surface.
2. Release two tabs (callout 1), and then remove the front cover (callout 2).
Figure 2-9   Remove the front cover
1
2
42 Chapter 2   Removal and replacement ENWW