The manuals are mostly in the manuals / HARDWARE  folder.
Please look into the following manuals and switch on the index option of your PDF reader.

Circuit Diagrams   (32 pages)
DM-V Systeminfo (304 pages)
NCR System Technical Manual Hardware (426 pages)
Servicemanual - full 600dpi (219 pages)


In the Modules  folder are even some document:

68008 cpu K234   
8088 cpu K231
Centronics K210
Decision Net_K600 
Diagnosticmodul
DMV_int_8088_cpu_no_pic K230
DMV_int_v20_8087_cpu_with_pic K235
DMV_nach_VGA_RGB monitor
External_hd-controller_replacement
External_hd-kit with WD1002HD0
External_hd_komplete with WD1002HD0
IEE-488_K804
Internal_hd-kit  with WD1001
Mem-256_K202
Mem-512k_neu with modern parts
Mem-512 K208 mem-64 K200
New_Moduls_from the _VzEkC forum
RS232 K801
RTC_k803