MAINTENANCE  Board Set KM11
ToDo

The KM11 consists of two small single-height modules.

  1. W130 - "maintenance board 1"
  2. W131 - "maintenance board 2"
KM11 Maintenance module W130
KM11 - W130   Maintenance module 1

The W130 is plugged into the backplane (position B02) and has several buffer circuits. This board buffers interface signals of the following PDP-11 processors: PDP-11/05, PDP-11/10, PDP-11/35, PDP-11/40, and PDP-11/45, The module can also be plugged in the following device controllers: RK11-C and RK11-D (RK05) disk controllers, the RX01 floppy drive, and maybe a few other devices too.

KM11 Maintenance module W131
KM11 - W131   Maintenance module 2

The W131 has 28 lamps (real filament bulbs) and four miniature switches. This module is placed on the header on top of the W130. A foil was put on the plastic cover over the light bulbs with text printed indicating the signals that were connected to each lamp.