Hi Nathan,
I'll run a meter over my 8921A mother board J 8 & 9, and see what I measure, reference GND. I have a drawing of the connections (connection diagram) somewhere, I will find that and attach it to a new email.
Regards
Bill M.
?
On 15/10/2023 1:12 pm, Nathan wrote:
Main oscillator, that's good.. joking aside, I hope you have a speedy recovery.
So, I have a question for anyone, on the J8 and J9 inputs on the mainboard, are they supposed to match the assembly repair manual, it seems backwards to what mine is, so I'm just confused. Without the IO card in, when it does the power supply tests, it's reading everything as around 5v and one as -4 something volts. I'm not sure if it's because I booted without the serial card in it, or something is crossed. Seems like the power supply is putting out all proper voltages but I wonder if they are going to the right place. Does anyone have a picture of the 4 connections? The PSU, regulator and J8 and J9 forward of the module cards? Thank you!
