EN Chapter 7 Troubleshooting 187
Troubleshooting the printing system
Preliminary operating checks
Before troubleshooting a specific printer problem, you should ensure that:
!
The printer is being maintained on a regular basis as described in chapter 4.
!
The customer is using acceptable print media as specified in the
HP LaserJet Printer Family
Print Media Guide
.
!
The printer is positioned on a solid, level surface.
!
The line voltage does not vary more than 10 percent from the nominal rated value as specified
on the power rating label.
!
The operating environment for the printer and paper is within the temperature and humidity
specifications listed in chapter 1 of this manual.
!
The printer is never exposed to ammonia fumes such as those produced by diazo copiers or
office cleaning materials.
!
The printer is not exposed to direct sunlight.
!
Non-HP components (such as refilled toner cartridges, EIO accessories, and DIMMS) are
removed from the printer.
Note When moving the printer into a warm room from a cold location such as a warehouse, various problems
can occur as a result of condensation in the printer. Additionally, if the photosensitive drum is cold, the
resistance of the photoconductive layer will be high. This will lead to incorrect contrast. Leave the
printer running for 10 to 20 minutes before its first job.
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