HP Color LaserJet CM6030 and CM6040 MFP Series - Embedded Web Server

Diagnostics Page
The Diagnostics Page screen provides information about calibration, color density, and parameters.
Figure 2-9 Diagnostics Page screen
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Table 2-6 Diagnostics Page
Callout Area on the screen Information or capability that the area provides
1 HP EWS tabs and
menus
For more information, see Navigating through the HP Embedded Web Server
on page 4.
2 Calibration
Information
Lists the last color-plane registration (CPR) page count, the last CPR page-count date,
the last page count (in engine cycles) for DMAX/DHALF, and the last DMAX/DHALF
page-count date.
Color plane registration occurs when new print cartridges are installed to compensate
for any slight variations that might occur in cartridge circumference.
DMAX is a density calibration of each print cartridge color at 100% coverage; DHALF
is also a density calibration of each print cartridge color, but as a halftone instead of
a full color. During halftone printing, the dots of toner are spread out, and coverage of
the toner is less than 100%.
3 Color Density Lists the cyan, magenta, yellow, and black (CMYK) values for highlights, midtones,
and shadows.
4 Parameters For color devices, specific engine settings related to the printing or
electrophotographic process are critical in identifying device status and function. The
electrophotographic parameters, which are used to detect, diagnose, and track print-
quality defects, appear in a 272-cell binary array that contains the settings registered
18 Chapter 2 Viewing product status from the HP EWS Information screens ENWW