PCB504/MF0002A P.C.B. FD-1 Relay Board
MS0043A P.C.B. CPC472 Daughterboard
112C4001-3160 P.C.B. DMP3160 Printer, VER. 04 (C) 1988 (0AMS0100 PSP0151B)
Note that some numbers start with '''27''' instead of '''Z7''' (the boards are really labeled like so, this is not a typo).