General Paper Path Troubleshooting

13.XX PAPER JAM

Paper jams occur in the printer when paper does not either reach or clear a photosensor along the printer’s paper path in a specific

amount of time. If a paper jam occurs, amessage is displayed on the printer’s Control Panel. The following table contains general questions you might ask and topics to explore prior to troubleshooting. See the 13.xx section in the Event Log for specific error codes.

Table 7-8. General Paper Path Troubleshooting Questions

Troubleshooting Check

Action

What is the frequency of the paper jams (for example: continuous, one jam per 100 pages, one jam per 1000 pages)?

Do paper jams only occur when the paper is fed from a particular paper input source (such as Tray 1 or Tray 2)?

Do jams only occur when paper is output to a specific output bin (either the Top Output Bin or Rear Output Bin)?

Do paper jams occur with a specific type of paper?

Where does the leading edge of the first sheet of paper in the printer’s paper path stop when a jam occurs? Are any sheets of paper damaged or torn?

Is the customer loading the paper trays correctly?

Is the customer overfilling the paper trays?

Verify with the customer. Print the Event Log to determine the paper jam history. See “Display” (page 7-12)and the “Sample Event Log”

(page 7-13) and evaluate the Event Log.

Use the Paper Path Test to isolate the problem (page 7-47).

Try different media. See the HP LaserJet Printer Family Paper Specification Guide. The guide is bundled with this service manual.

Attempt to duplicate. Use the Paper Path Test to isolate the problem. Inspect the paper path and all paper path mechanical assemblies up to the location where the paper jams.

Observe the customer loading paper. Do not fan paper. See proper paper handling procedures in the HP LaserJet Printer Family Paper Specification Guide.

Ensure that paper is NOT over the maximum fill marks in the paper trays. Observe the customer loading paper in the trays.

Troubleshooting the Printing System 7-45

4050, 4000 specifications

The HP LaserJet 4000 series is renowned for its reliability and efficiency, making it a staple in many business environments. The HP 4000 N and 4000 model variants have been designed with advanced printing technologies to enhance productivity and deliver high-quality output.

The HP 4000 N model is equipped with a robust 1200 dpi resolution, allowing for sharp text and graphics, which is essential for professional documents. It supports a print speed of up to 19 pages per minute, ensuring that even large print jobs are completed quickly. This model features a monthly duty cycle of up to 65,000 pages, making it suitable for medium to large workgroups that demand consistent performance.

One of the defining characteristics of the HP 4000 series is its standout paper handling capability. The standard configuration includes a 250-sheet input tray, a 100-sheet output tray, and the flexibility to expand with optional additional trays. Users can add up to three 250-sheet paper trays for extended capacity, facilitating long-printing tasks without frequent interruptions. The printer also supports various media sizes, ranging from letter to legal and envelopes, catering to diverse office printing needs.

Connectivity is another strength of the HP 4000 N model. It comes standard with a parallel port and a fast Ethernet interface, ensuring seamless integration into networked environments. This allows multiple users to share the printer without sacrificing print speed or quality. The built-in PCL and PostScript compatibility offer versatility when dealing with different print jobs and are crucial for ensuring that text and graphics are rendered correctly.

In terms of consumables, the HP 4000 series utilizes high-capacity toner cartridges, which not only reduce the frequency of replacements but also contribute to lower overall printing costs. Users can expect a yield of around 10,000 pages per cartridge, optimizing productivity and minimizing downtime.

The HP 4000 N and 4000 series are also recognized for their durability and ease of maintenance. With a straightforward control panel and intuitive cartridge replacement process, users can quickly manage their printing tasks. This user-friendly design reduces the learning curve for new staff and enhances overall team productivity.

In conclusion, the HP 4000 N model stands out with its superior print quality, excellent speed, and robust paper handling capabilities. These features, combined with its connectivity options and cost-efficient consumables, make it a valuable addition to any business looking to enhance its printing infrastructure. The durability and reliability of the HP 4000 series ensure that businesses can rely on these printers for their day-to-day operational needs.

HP 4000, 4050 manual General Paper Path Troubleshooting

Models: 4050 4000

General Paper Path Troubleshooting

4050, 4000 specifications