HP CM8060 Color MFP Kundendienst Handbuch Seite 218

Required time
2 to 3 minutes
Internal operation
The drop detect assembly has six channels (one per pen) and each channel has an optical beam
that helps determine the health of the pen nozzles.
During the Drop Detect routine, each pen is positioned over a drop detect channel. A group of
nozzles from each of the six pens simultaneously fires ink into the channels, one nozzle at a time.
The sensor beam detects each ink drop fired. The print carriages then position the next group of
nozzles for testing. This process repeats until all nozzles have been tested.
The results from the Drop Detect routine is used to update the Pen Health Gauge.
HINWEIS:
Instructions
▲ See „Engine Calibrations 1" auf Seite
Reset NHDB
Purpose
This routine resets the nozzle health database (NHDB) in the engine RAM. It does not replace the
NHDB in the formatter hard disk drive until you select
HINWEIS:
mark "?" until the Drop Detect routine is run.
Store NHDB
Purpose
This routine is normally used after
disk.
152 Kapitel 5 Calibrations and adjustments
The pens are not cleaned during a Drop Detect routine.
Resetting the NHDB will cause the Pen Health Gauge to display gray and a question
Reset NHDB
58.
Store NHDB
to clear the old NHDB stored in the formatter hard
or run the Drop Detect routine.
DEWW