PDP-11/10 repair started

Henk Gooijen henk.gooijen at hotmail.com
Sun Oct 4 13:09:48 CDT 2015

Some corrections to my post regarding the console LED behavior.

Voltage levels on the CPU backplane are still good whne the 2 CPU boards
are installed in the backplane, but the processor is not responsive to
the switches on the console panel.

The RUN LED is on, ADDRESS/DATA are all off. When the HALT/ENABLE switch
is in the HALT position and START is toggled ("reset"), the RUN goes off
and the ADDRESS/DATA LEDs all go on.

LOAD ADDR, EXAM and CONT have no response.

When I set HALT/ENABLE switch to ENABLE and toggle START, the RUN LED
goes on and DATA/ADDRESS LEDs go off, except LED "0".

- Henk, PA8PDP

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