HP LaserJet M4345 User Manual

							Manage supplies
Monitor the print cartridge to ensure high-quality output.
Supplies life expectancy
The life of the print cartridge depends on the amount of toner that print jobs require and the length of
life for the components inside the cartridge. When printing text at appr\
oximately 5% coverage (typical
for a business letter), the HPprint cartridge lasts an average of 18,000 pages. The page-yield
specification that HP provides is a general guideline. Actual yield can \
vary according to usage
conditions.
Change the print cartridge
1. Pull the top-cover release to open the top cover.
2.Grasp the print cartridge by the handle, and remove it from the device.
3. Remove the new print cartridge from the packaging.
4. Remove any protective tape from the print cartridge.
5. Insert the new print cartridge in the device, and close the top cover.
Manage the print cartridge
Print-cartridge storage
Do not remove the print cartridge from its package until you are ready to use it.
CAUTION To prevent damage to the print cartridge, do not  expose it to light for more than a
few minutes.
Use genuine HP print cartridges
When you use a genuine new HP print cartridge, you can obtain the following supplies information:
● Percentage of supplies remaining
● Estimated number of pages remaining
● Number of pages printed
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							HP policy on non-HP print cartridges
Hewlett-Packard Company cannot recommend the use of non-HP print cartridges, either new or
remanufactured. Because they are not HP products, HP cannot influence their design or control their
quality.
NOTE Any damage caused by a non-HP print cartridge is not covered under the
HP warranty and service agreements.
To install a new HP print cartridge, see Change the print cartridge . To recycle the used cartridge,
follow the instructions included with the new cartridge.
Print-cartridge authentication
The device automatically authenticates the print cartridge when it is inserted into the device. During
authentication, the device notifies you whether  a cartridge is a genuine HP print cartridge.
If the device control-panel message states that this is not a genuine HP print cartridge and you
believe you purchased an HP print cartridge, see 
HP fraud hotline and Web site .
HP fraud hotline and Web site
Call the HP fraud hotline (1-877-219-3183, toll-free in North America) or g\
o to www.hp.com/go/
anticounterfeit  when you install an HP print cartridge and the control-panel message says the
cartridge is non-HP. HP will help determine if the  cartridge is genuine and take steps to resolve the
problem.
Your print cartridge might not  be a genuine HP print cartridge if you notice the following:
● You are experiencing a high number of problems with the print cartridge.
● The cartridge does not look like it usually does (for example, the orange pull tab is missing, or
the packaging differs from HP packaging).
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							Clean the device
During the printing process, paper, toner, and dust particles can accumulate inside the product. Over
time, this buildup can cause print-quality problems, such as toner specks or smearing. This product
has a cleaning mode that can correct and prevent these types of problems.
Clean the exterior
Use a soft, damp, lint-free cloth to wipe dust, smudges, and stains off of the exterior of the device.
Clean the scanner glass
Dirty glass, from fingerprints, smudges, hair, and so  on, slows down performance and affects the
accuracy of special features such as fit-to-page and copy.
NOTE If streaks or other defects appear only  on copies produced using the automatic
document feeder (ADF), clean the scanner strip (step 3). It is not necessary to clean the
scanner glass.
1. Open the scanner lid.
2. Clean the glass by using a damp, lint-free cloth.
CAUTION Do not use abrasives, acetone, benzene,  ammonia, ethyl alcohol, or carbon
tetrachloride on any part of the device; these can damage the device. Do not place
liquids directly on the glass. They might  seep under it and damage the device.
3.Clean the scanner strip by using a damp, lint-free cloth.
ENWW Clean the device 161
 
						

							Clean the scanner lid backing
Minor debris can accumulate on the white document lid backing that is located underneath the 
scanner lid. 
1.Open the scanner lid.
2.Clean the white document lid backing by using a soft cloth or sponge that has been moistened 
with a mild soap and warm water. Also, clean the scanner strip next to the ADF scanner glass.
3.Wash the backing gently to loosen debris; do not scrub the backing.
4.Dry the backing by using a chamois or soft cloth.
CAUTIONDo not use paper-based wipes because they might scratch the backing.
5.If this does not clean the backing well enough, repeat the previous steps and use isopropyl 
alcohol to dampen the cloth or sponge, and then wipe the backing thoroughly with a damp cloth
to remove any residual alcohol.
Clean the paper path
1.From the Home screen, touch Administration.
2.Touch Print Quality.
3.Touch Calibration/Cleaning.
4.Touch Create Cleaning Page.
The device prints a cleaning page.
5.Follow the instructions printed on the cleaning page.
Clean the document feeder
Clean the document feeder only if it is visibly marked or dirty, or if you are experiencing a decrease
in copy quality (such as streaking).
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NOTE  In certain areas of California, air pollution control regulations restrict the use of liquid  
Isopropyl Alcohol (IPA) as a cleaning agent.  In those areas of California, please disregard the 
previous recommendations and use a dry, lint-free cloth.  The cloth may be moistened with water 
if desired.
 
						

							Clean the document feeder delivery system
1.Open the scanner lid.
2.Locate the white, vinyl document-feeder backing.
3.Locate the white, vinyl calibration strips.
4.Clean the document-feeder backing and the calibration  strips by wiping them with a clean,
damp, lint-free cloth. Use an ammonia-based surface cleaner only when a water-dampened
cloth does not clean the document-feeder components.
5. Clean the scanner glass by wiping it gently  with a clean, slightly damp, lint-free cloth. Use an
ammonia-based surface cleaner only when a water-dampened  cloth does not clean the scanner
glass.
6. Close the scanner lid.
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							Clean the document feeder-rollers
You should clean the rollers in the document feeder if you are experiencing misfeeds or if your
originals show marks as they exit the document feeder.
CAUTIONClean the rollers only if you experience misfeeds or marks on the originals, and
you notice dust on the rollers. Cleaning the rollers frequently could introduce dust into the
device.
1. Open the scanner lid.
2.Locate the rollers near white, vinyl calibration strips.
3.Wipe the rollers gently with a clean, water-dampened, lint-free cloth.
CAUTION Do not pour water directly onto the rollers. Doing so might damage the device.
4.Close the scanner lid.
5.Pull the release lever to open the document-feeder cover.
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							6.Locate the rollers.
7.Wipe the rollers with a clean, water-dampened, lint-free cloth.
CAUTION Do not pour water directly onto the  rollers. Doing so might damage the device.
8.Locate the separation pad.
9.Wipe the pad with a clean, water-dampened, lint-free cloth.
10. Close the document-feeder cover.
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							Calibrate the scanner
Calibrate the scanner to compensate for offsets in the scanner imaging system (carriage head) for
ADF and flatbed scans. Because of mechanical tolerances, the scanners carriage head might not
read the position of the image accurately. During the calibration procedure, scanner offset values are
calculated and stored. The offset values are then used when producing scans so that the correct
portion of the document is captured.
Scanner calibration should be carried out only if you notice offset problems with the scanned images.
The scanner is calibrated before it leaves the factory. It needs to be calibrated again only rarely.
1. From the Home screen, touch  Administration.
2. Touch  Troubleshooting .
3. Touch  Calibrate Scanner  and then follow the instructions in the onscreen dialog box.
The device starts the calibration process, and  Calibrating appears on the touchscreen status
line until the process is complete.
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							11 Problem solving
This chapter provides information about the following topics.
●
Problem-solving checklist
●
Problem-solving flowchart
●
Solve general device problems
●
Control-panel message types
●
Control-panel messages
●
Common causes of jams
●
Clear jams
●
Clear staple jams
●
Solve print-quality problems
●
Solve network printing problems
●
Solve copy problems
●
Solve fax problems
●
Solve e-mail problems
●
Solve common Windows problems 
●
Solve common Macintosh problems
●
Solve Linux problems
●
Solve PostScript problems
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							Problem-solving checklist
If you are experiencing problems, use the following checklist to identify the cause of the problem:
● Is the device connected to power?
● Is the device on?
● Is the device in the 
Ready state?
● Are all necessary cables connected?
● Do any messages appear on the control panel?
● Are genuine HP supplies installed?
● Was a recently replaced print cartridge installed correctly, and was the pull tab and/or attached
tape on the cartridge removed?
For additional information about installation and setup, see the getting started guide.
If you cannot find solutions to problems in this guide, go to 
http://www.hp.com/support/ljm4345mfp .
Factors that affect performance
Several factors affect the time it takes to print a job:
●The use of special paper (such as transparencies, heavy paper, and custom-size paper)
● Device processing and download time
● The complexity and size of graphics
● The speed of the computer you are using
● The USB connection
● The I/O configuration
● The amount of memory installed
● The network operating system and configuration (if applicable)
● Device personality (PCL or PS)
NOTE
Although additional memory can resolve memory problems, improve how the device
handles complex graphics, and improve download times, it will not increase maximum printing
speed (ppm).
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