HP LaserJet M4345xm 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...

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....

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...

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...

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...

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,...

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.
ENWW Clean the device 165
 

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...

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
●...

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...