PDP-11/44 problem - RUN stays on

Kevin wrote: Yes, but that was about the 11/34, but it applies here too! But I remember something about voltage comparators on the CIM, M7090. No, that's correct. Just to make sure, I just did 2 simple checks. 1) I removed the M9202 that connects the CPU backplane to the next one, and inserted a M9302 as terminator in the CPU, last slot position A-B. 2) I removed the M9302 (basically leaving things open. In a light-loaded system you can try that. Well, the 11/44 CPU backplane has not much space for peripherals ... the quad SPC slot has a G7273, so that's OK, and the hex slot has a Quadrasync E (wasn't that on the list last week?) I didn't know I had such a board! (and thus probably the doc too! I haven't looked at the 11/44 for over a year). Both checks are negative, that is, RUN stays ON, and moving the switch to CONT/HALT/BOOT in any possible order does not change this :( The VT100 shows only: (Console V3.40C) (Program) _ I tried the suggestion from Don with the M9302 in the last slot of the 11/44 backplane. To my surprise, when you hit ^P, the system prints a new "(Program)" line and the cursor (_) moves to the next line. So, now I am thinking ... a wrong/dead terminator on the RL02 drive, can it have such an effect that through the RL11 controller the bus hangs?! thnaks again, - Henk. - thanks, Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.