I replaced the print heads, carriage belt and ink cartridges. Reassembly was the reverse of disassembly. However, it keeps indicating that one or more of the ink cartridges is faulty. After a bit more disassembly and reseating the ribbon cables that attach the ink station to the main circuit board, the faults are cleared. After a bit of printing (which causes the print to shake), the faults return. I suspect that the cable connectors are the problem. I'm not sure what to do next.
On to another project...
