HP P 1100 Service Manual

							Clear jams from inside the product
1.Open the print-cartridge door, and then remove the print cartridge.
CAUTION: To prevent damage, do not expose the print cartridge to light. Cover it with a piece
of paper.
2. If you can see the jammed paper, carefully grasp the jammed paper, and slowly pull it out of the
product.
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							3.Reinstall the print cartridge, and then close the print-cartridge door.
Solve repeated jams
●Verify that the input tray is not overfilled. The input tray capacity varies depending on the type of
print paper that you are using.
● Verify that the paper guides are properly adjusted.
● Check that the input tray is securely in place.
● Do not add paper into the input tray while the product is printing.
● Use only HP-recommended paper types and sizes.
● Do not fan paper prior to loading it in a tray. To loosen the ream, hold it firmly in both hands and
twist the paper by rotating your hands in the opposite direction.
● Do not let print paper stack up in the output bin. The print paper type and the amount of toner used
affect the output bin capacity.
● Check the power connection. Make sure that the power cord is firmly connected to both the product
and the power supply box. Plug the power cord into a grounded power outlet.
Change jam recovery
When the Jam Recovery feature is turned on, the product reprints any pages that are damaged during
a jam.
1.
Use the printer driver to change the default settings. Follow the appropriate procedure, depending
on the operating system you are using.
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							Windows XP, Windows Server 2003, and Windows Server 2008 (using the default Start menu
view)
a.Click  Start, and then click  Printers and Faxes .
b. Right-click the driver icon, and then select  Properties.
c. Click the  Device Settings tab.
Windows XP, Windows Server 2003, and Windows Server 2008 (using the Classic Start menu
view)
a. Click  Start, click Settings , and then click  Printers.
b. Right-click the driver icon, and then select  Properties.
c. Click the  Device Settings tab.
Windows Vista and Windows 7
a. Click  Start, click Control Panel , and then in the category for  Hardware and Sound click
Printer .
b. Right-click the driver icon, and then select  Properties.
c. Click the  Device Settings tab.
Mac OS X 10.4
a. From the Apple menu 
, click the System Preferences  menu and then click the Print &
Fax  icon.
b. Click the  Printer Setup  button.
Mac OS X 10.5 and 10.6
a. From the Apple menu 
, click the System Preferences  menu and then click the Print &
Fax  icon.
b. Select the product in the left side of the window.
c. Click the  Options & Supplies  button.
d. Click the  Driver tab.
2. Click the Auto  option or the Off option under  Jam Recovery.
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							Solve paper-handling problems
The following problems with paper cause print-quality deviations, jams, or damage to the product.
ProblemCauseSolution
Poor print quality or toner adhesionThe paper is too moist, too rough, too
heavy or too smooth, or it is embossed
or from a faulty paper lot.Try another kind of paper, between 100
and 250 Sheffield, with 4% to 6%
moisture content.
Dropouts, jamming, or curlThe paper has been stored incorrectly.Store paper flat in its moisture-proof
wrapping.
The paper has variability from one side
to the other.Turn the paper over.
Excessive curlThe paper is too moist, has the wrong
grain direction, or is of short-grain
construction.Use long-grain paper.
The paper varies from side-to-side.Turn the paper over.
Jams, damage to productThe paper has cutouts or perforations.Use paper that is free of cutouts or
perforations.
Problems with feedingThe paper has ragged edges.Use high-quality paper that is made for
laser printers.
The paper varies from side-to-side.Turn the paper over.
The paper is too moist, too rough, too
heavy or too smooth, has the wrong grain
direction, or is of short-grain construction
or it is embossed or from a faulty paper
lot.Try another kind of paper, between 100
and 250 Sheffield, 4% to 6% moisture
content.
Use long-grain paper.
Print is skewed (crooked).The paper guides might be incorrectly
adjusted.Remove all paper from the input tray,
straighten the stack, and then load the
paper in the input tray again. Adjust the
paper guides to the width and length of
the paper that you are using and try
printing again.
More than one sheet feeds at one time.The paper tray might be overloaded.Remove some of the paper from the tray.
The paper might be wrinkled, folded, or
damaged.Verify that the paper is not wrinkled,
folded, or damaged. Try printing on
paper from a new or different package.
The product does not pull paper from the
input tray.The product might be in manual-feed
mode.At the computer, follow the onscreen
instructions to deactivate manual-feed
mode. Or, at the product, open and close
the print-cartridge door.
The pickup roller might be dirty or
damaged.Clean the roller if it is dirty. Replace the
roller if it is damaged. See Pickup roller
on page 37.
The paper-length adjustment control in
the input tray is set at a length that is
greater than the paper size.Set the paper-length adjustment control
to the correct length.
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							Solve image-quality problems
You can prevent most print-quality problems by following these guidelines.
●Use paper that meets HP specifications.
● Clean the product as necessary. See 
Clean the product on page 123.
Image defect table
This section provides information about identifying and correcting print defects.
Light print or faded
NOTE:
The paper might not meet Hewlett-Packards media
specifications (for example, the paper is too moist or too
rough).
1. If the whole page is light, the print density adjustment is
too light or EconoMode might be turned on. Adjust the
print density, and disable EconoMode in the product
Properties.
2. Redistribute the toner to extend the life. Remove the print
cartridge, and tip it from side to side lengthwise.
The print cartridge is nearing end of life. Install a new
genuine HP print cartridge.
3. Open the print cartridge door during a print job and
remove the print cartridge. Open the drum shield and
check the toner on the drum surface.
◦If the toner image is not fully transferring to the
paper, replace the transfer roller. See 
Transfer rolleron page 39.
◦ If the toner image on the drum is faint, replace the
laser/scanner. See 
Laser/scanner assemblyon page 58.
Toner specks
●
The paper might not meet Hewlett-Packards media
specifications (for example, the paper is too moist or too
rough).
● The product might need to be cleaned.
● The print cartridge might be defective. Install a new
genuine HP print cartridge.
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							Dropouts
●A single sheet of paper might be defective. Try reprinting
the job.
● The media moisture content is uneven or the paper has
moist spots on its surface. Try printing with new paper.
● The paper lot is bad. The manufacturing processes can
cause some areas to reject toner. Try a different type or
brand of paper.
● The print cartridge might be defective. Install a new
genuine HP print cartridge.
Vertical lines
●Toner might be on the photosensitive drum. Print a few
more pages to see if the problem might correct itself.
● The photosensitive drum inside the print cartridge has
probably been scratched. Install a new genuine HP print
cartridge.
Gray background
●Change the paper to a lighter basis weight.
● Check the product environment. Very dry (low humidity)
conditions can increase the amount of background
shading.
● The density setting might be too high. Adjust the density
setting. See 
Change print density on page 122
● Install a new genuine HP print cartridge.
Toner smear
●
If toner smears appear on the leading edge of the paper,
the paper guides might be dirty. Wipe the paper guides
with a dry, lint-free cloth.
● Check the paper type and quality.
● The fuser temperature might be too low. In the printer
driver, make sure the appropriate paper type is selected.
● Try installing a new genuine HP print cartridge.
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							Loose toner
●The fuser temperature might be too low. In the printer
driver, make sure the appropriate paper type is selected.
● Clean the inside of the product. See 
Clean the product
on page 123
.
● Check the paper quality.
● Plug the product directly into an AC outlet instead of into
a power strip.
Vertical repetitive defects
●The internal parts might have toner on them. If the defects
occur on the back of the page, the problem probably will
correct itself after a few more printed pages.
● In the printer driver, make sure the appropriate paper type
is selected.
● A component might be damaged. If a repetitive mark
occurs at the same spot on the page, use the repetitive
defect ruler table to find the problem. See 
Repetitivedefect ruler on page 103
.
Misformed characters
● If characters are improperly formed, producing hollow
images, the paper stock might be too slick. Try a different
paper.
Page skew
●Make sure that the paper is loaded correctly and the
paper guides are not too tight or too loose against the
paper stack.
● The input bin might be too full.
● Check the paper type and quality.
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							Curl or wave
●Check the paper type and quality. Both high temperature
and high humidity cause paper to curl.
● The paper might have been in the input tray too long. Turn
over the stack of paper in the tray. Also, try rotating the
paper 180° in the input tray.
● The fuser temperature might be too high. In the printer
driver, make sure that the appropriate paper type is
selected. If the problem persists, select a paper type that
uses a lower fuser temperature, such as transparencies
or light paper.
Wrinkles or creases
●
Make sure that paper is loaded properly.
● Check the paper type and quality.
● Turn over the stack of paper in the tray. Also, try rotating
the paper 180° in the input tray.
● For envelopes, this can be c
aused by air pockets inside
the envelope. Remove the envelope, flatten the
envelope, and then try printing again.
Toner scatter outline
● If large amounts of toner have scattered around the
characters, the transfer of toner to the paper is not
optimal. (A small amount of toner scatter is normal for
laser printing.) Try a different paper type setting in the
printer driver, or use a different paper type.
● Turn over the stack of paper in the tray.
● Use paper that is designed for laser printers.
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							Moisture
NOTE:This product dissipates heat by using convective
cooling. The heat and moisture generated by the printing
process escape through vents in the product exterior or
through the output bin area.
Verify normal product operation
The release of moisture is a result of normal product operation.
However, HP recommends using the following steps to verify
that the product is releasing steam and does not have a
functional problem.
1. Turn the product off, and then on.
2. Send a print job to the product, and then verify that the
product is operating correctly.
3. When printing a job and vapor is visible, immediately
reprint the job using the same sheet of paper. There
should be either no visible vapor, or much less vapor
during the printing process.
Limit or reduce steam or vapor
●Make sure that the product is placed in a well-ventilated
area that meets the environmental specifications.
● Do not place the product, or store paper, near an outside
entrance where temperature changes can increase
humidity.
● Use an unopened ream of paper that has not been
exposed to high humidity.
● Store paper in an airtight container, where it will be less
likely to absorb moisture.
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							Optimize and improve image quality
Change print density
You can change the print density setting by from the product properties dialog box.
1.Windows XP, Windows Server 2008, and Windows Server 2003 (using the default Start menu
view):  Click Start, and then click  Printers and Faxes .
-or-
Windows XP, Windows Server 2008, and Windows Server 2003 (using the Classic Start menu
view):  Click Start, and then click  Printers.
-or-
Windows Vista:  Click Start, click Control Panel , and then in the category for  Hardware and
Sound  click Printer .
-or-
Windows 7 : Click Start, and then click  Devices and Printers.
2. In the list of printers, right-click the name of this product, and then click the  Properties menu item
to open the product properties dialog box.
3. Click the Device settings  tab, and then move the Print Density slider to the desired setting.
4. Click the Apply  button to accept the setting, and then click the  OK button to close the dialog box.
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