Print quality troubleshooting tool, Calibrating the printer, Print quality defect chart – HP Color LaserJet 4650 Printer series User Manual

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Print quality troubleshooting tool

The print quality troubleshooting tool helps you identify and troubleshoot print quality issues
for the HP Color LaserJet 4650 printer. The tool includes solutions for many print quality
issues, using standard images to provide a common diagnostic environment. It is designed
to provide intuitive, step-by-step directions for printing troubleshooting pages that are used
to isolate print quality problems and provide possible solutions.

To find the print quality troubleshooting tool, go to the following quick URL:

http://www.hp.com/go/printquality/clj4650

Calibrating the printer

The HP Color LaserJet 4650 printer automatically calibrates and cleans at various times to
maintain the highest level of print quality. The user may also request the printer to calibrate
via the printer’s control panel, using QUICK CALIBRATE NOW or FULL CALIBRATE NOW
located in the CALIBRATION and PRINT QUALITY menu. QUICK CALIBRATE NOW is
used for color tone calibration (D-Max & D-Half) and takes about 86 seconds. If color density
or tone seems wrong, Quick Calibration can be run. Full Calibration includes the Quick
Calibrate routines and adds Drum Phase Calibration and Color Plane Registration (CPR).
This takes about 3 minutes and 15 seconds. If color layers (cyan, magenta, yellow, black) on
the printed page seem to be shifted from one another, Full Calibration should be run.

The HP Color LaserJet 4650 printer incorporates a new feature to skip calibration when
appropriate, thereby making the printer available more quickly. For example, if the printer is
powered off and on quickly (within 20 seconds) then calibration is not needed and will be
skipped. This saves approximately one minute in time to be ready.

While the printer is calibrating and cleaning, the printer will pause printing for the amount of
time it takes to complete the calibration or cleaning. For most calibrations and cleaning, the
printer will not interrupt a print job, but will wait for the job to complete before calibrating or
cleaning.

1. Press

M

ENU

to enter the MENUS.

2. Press to highlight CONFIGURE DEVICE.

3. Press to select CONFIGURE DEVICE.

4. Press to highlight PRINT QUALITY.

5. Press to select PRINT QUALITY.

6. Press to highlight QUICK CALIBRATE NOW.

7. Press to select QUICK CALIBRATE NOW.

OR

To perform a full calibration, use FULL CALIBRATE NOW instead of QUICK CALIBRATE
NOW
in steps 6 and 7.

Print quality defect chart

Use the examples in the print quality defect chart to determine which print-quality problem
you are experiencing, and then see the corresponding pages to find information that can
help you troubleshoot the problem. For the latest information and problem-solving
procedures, go to

http://www.hp.com/support/lj4650

.

ENWW

Print quality troubleshooting

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