billdeg
Technician
I am working to narrow down why one of my pdp 11/05's does not complete the current loop connection with a Teletype ASR33. Assuming it's a power supply issue.
Teletype works fine with other systems, controller cards work fine in another PDP 11/05. Cable is good. So it must be something in the power supply. Before I disassemble, any ideas? BTW the system worked fine until I powered it off one day, and when I turned it back on after a brief period (maybe a minute) the system would not longer cause the teletype to stop chattering like it normally would when power engaged.
My next move will be to partially take apart the power supply enough to measure the voltages coming off the regulators.
BIll
Teletype works fine with other systems, controller cards work fine in another PDP 11/05. Cable is good. So it must be something in the power supply. Before I disassemble, any ideas? BTW the system worked fine until I powered it off one day, and when I turned it back on after a brief period (maybe a minute) the system would not longer cause the teletype to stop chattering like it normally would when power engaged.
My next move will be to partially take apart the power supply enough to measure the voltages coming off the regulators.
BIll