NovaJet 500/630/700 Series Service Manual
Clean and Inspect Carriage Assembly
Foreign material on the carriage assembly could short out signals being developed on the carriage assembly and cause erroneous prints or even damage to the carriage assembly. A very common problem is where ink has been spilled onto the carriage assembly. All electrical circuits should be free of foreign material, especially those with conductive properties.
Clean the carriage assembly by blowing the objects away or gently brush them aside with a soft brush if required. Be careful not to let anything to fall into the printer as you clean or it could cause a new problem later.
Inspect the carriage assembly for any damage to the boards, connec- tions, or any of the components on the assembly.
Reseat Connectors on MPWA and Carriage Board
CAUTION
Integrated circuits may become weakened or damaged by electrical discharge. Do not touch or work near integrated circuits without wearing an ESD wrist strap.
CAUTION
Ribbon connectors can be easily damaged if incorrectly handled. Observe extreme caution when handling the ribbon connectors to avoid damage.
Many problems can be corrected simply by removing and reseating connections found in circuit assemblies. This process helps to clean the contacts and can dissipate any static electrical charges that might have developed.
