1 Isolate the problem to the major system (the host computer, the network and/or server, or MFP major assemblies). When a faulty part is identified, repair is usually accomplished by assembly-level replacement of field replaceable units (FRUs). Some mechanical assemblies can be repaired at the subassembly level. Hewlett-Packard does not support replacement of components on the printed circuit boards (PCBs). 24 Service approach C9148-90909 2 Determine whether the problem is located in one of the paper-handling devices or in the product engine. 3 Troubleshoot the problem using the procedures in the troubleshooting chapter of this manual. See “Troubleshooting” on page 109 .
1 2 Repair of the printer normally begins with a three-step process: 1 automatic document feed (ADF) unit Major assemblies 3 Figure 5. Major assemblies 2 scan unit 3 print unit Service approach 3 1 2