CAUTION: Do not pull directly on the wires to disconnect them. Always pull on the plastic body of a connector to avoid damaging the connector wires. Types of screws WARNING! Make sure that components are replaced with the correct screw type. Using an incorrect screw (for example, substituting a long screw for the correct shorter screw) can cause damage to the product or interfere with product operation. Do not intermix screws that are removed from one component with the screws that are removed from another component. For a complete list of screw types and part numbers, see the Parts chapter.
Service approach Printer repair normally begins by using the product internal diagnostics and the following two-step process: 1. Isolate the problem to the major system (for example, the network or server, or the product). 2. Troubleshoot the problem by using the procedures in chapter 2. After you locate a faulty part, the product can usually be repaired at the assembly level by replacing FRUs. Some mechanical assemblies might need to be repaired at the subassembly level. Hewlett-Packard Company does not support replacement of components on the printed circuit assembles. Before performing service 1.
Turn the product off, wait 5 seconds, and then remove the power cord before attempting to service the product. CAUTION: If this warning is not followed, severe injury and damage to the device can result. The power must be on for certain functional checks during troubleshooting. However, the power supply must be disconnected during parts removal. 2. Remove all media. 3. Place the product on an ESD mat (if available). 4. Remove the print cartridge. ENWW Removal and replacement strategy 3