PDP-11/10 repair started
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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