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We had to power down our site for some distribution work, and when we went to restore power to the MKV panel (TMR) the S and T cores would only get to A6 while the C and R would reach A7 successfully. We also received almost 30 diagnostic alarms with most of them relating to the R core/TCQA card.
I also noticed a few "power supply out of limits" alarms which led me to check the power supply voltages in the DIAGC menu and found them to be curious to say the least on the R core. The S and T cores appeared "normal".
P5 = 5.8V
P15a = 4.74
N15a = 16.6
P15b = 16.6
N15b = -3.62
P125V = 148 ????
N125V = 148 ????
I tried replacing the TCQA card in the R core but that did nothing. I also noticed that the alarm beep isn't there when powering up the units or when alarms register. It was very weak sounding the last time I heard it as well (warbly).
We also tried the power supply card in the R core as a last ditch effort with no change in status.
Any suggestions on where to go now?
Thanks!
I also noticed a few "power supply out of limits" alarms which led me to check the power supply voltages in the DIAGC menu and found them to be curious to say the least on the R core. The S and T cores appeared "normal".
P5 = 5.8V
P15a = 4.74
N15a = 16.6
P15b = 16.6
N15b = -3.62
P125V = 148 ????
N125V = 148 ????
I tried replacing the TCQA card in the R core but that did nothing. I also noticed that the alarm beep isn't there when powering up the units or when alarms register. It was very weak sounding the last time I heard it as well (warbly).
We also tried the power supply card in the R core as a last ditch effort with no change in status.
Any suggestions on where to go now?
Thanks!