Have had verbal contact with CISS and discussed problem. We purchased a replacement 4 station PC board which did not correct problem. Received another PC board from home office which was taken from working system. Printer still reports that all cartridges are not recognized-->change cartridges.
Setup cartridges still work correctly.
Swap to CISS includes pressing reset switch for upward of 5 seconds before telling printer to proceed ("Ok"). All steps with printer power on. (Pressing reset button dims message panel cartridge indicators until released.)
Nozel check is good with setup cartridges and reports that
Serial # ==> QKEY701722
Firmware ==> LJ05DC.48.48
Summary codes ==> LJ05DC QP120A49