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HP LaserJet 9000dn Service Manual: Preliminary Operating Checks

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Preliminary operating checks

Make sure that the following conditions are met before troubleshooting a specific printer problem:
l
The printer is plugged in, and specified power is delivered.
l
The selected tray contains media that has been properly loaded and adjusted.
l
The print cartridge is installed properly.
l
The printer receives maintenance on a regular basis.
l
Any I/O devices are properly installed.
l
The customer is using acceptable print media.
l
The printer is positioned on a solid, level surface.
l
The line voltage does not vary more than 10 percent from the nominal rated value specified on
the power rating label.
l
The operating environment for the printer is within the temperature and humidity specifications.
l
The printer is never exposed to ammonia fumes.
l
The printer is not exposed to direct sunlight.
l
Non-HP components (such as refilled print cartridges, font DIMMs, and memory DIMMs) are
removed from the printer.
Note
Sudden changes in printer environment can cause image defects and media-handling problems.
Always make sure the printer is not exposed to direct sunlight or to heating or cooling vents. Allow
time for the printer and media to acclimate whenever changing environments (for example, moving
from a cold environment to a warm one). Acclimation can take anywhere from 3 to 24 hours depending
on the ambient conditions.
202 Chapter 7 Troubleshooting
C8519-90912

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