Mamiya Sekor D 75-150mm & 28mm F-- in camera display
There still seems to be a number of Mamiya Sekor D 75 - 150 mm lenses, in the field that are not up to date. This lens causes the camera communication to fail with error 06, F--, or the camera hangs. This has been seen on the Mamiya AFD II, AFD III, and the Phase One 645. When replaced with a properly configured lens the problem is solved.
Mamiya has provided a serial number list that can be used to identify lenses that do not need an upgrade: Mamiya Sekor D 28mm AF GE3003 GG3016 GE1034 GE1038 GE3053 GE3003 GE3008 GH3009 GH3011 GH3017 GH3019 AND LATER Mamiya Sekor D 75-150mm AF GE1050 GE1013 GF3002 GF3008 GF302...