Troubleshooting process Preliminary operating checks Make sure that the following conditions are met before troubleshooting a specific printer problem: The printer is plugged in and power is delivered to the outlet as specified on the power rating label. The selected tray contains media that has been properly loaded. The toner cartridge is installed properly. The printer is receiving maintenance on a regular basis. Any I/O devices are properly installed. The customer is using acceptable print media. The printer is positioned on a solid, level surface. The line voltage does not vary more than 10 percent from the nominal rated value specified on the power rating label.
The operating environment for the printer is within the temperature and humidity specifications. 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, font cartridges, and memory boards) are removed from the printer. Note Sudden changes in the printer’s 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. Basic fault isolation The troubleshooting process is a systematic approach that first addresses the major problems first and then other problems to discover the causes for printer malfunctions and errors. The "Troubleshooting process flow" page 180 illustrates the major steps for troubleshooting the printing system. Each heading depicts a major troubleshooting step. A “YES” answer to the questions allows troubleshooting to proceed to the next major step.
A “NO” answer indicates that additional testing and correction is needed. Proceed to the referenced location in the chapter and follow the directions there. After completing the additional testing and correcting the problem, proceed to the next major step. Note It is important to always follow this process in sequence. Failure to do so can result in increased repair time, difficulty, and expense. 178 Chapter 7 Troubleshooting C7058-90936