I have acquired a 6034L GBIB system power supply with a bit of an issue. As soon as I power it up, it goes into CC Limit mode with the CV normal LED blinking very fast. I can adjust the voltage output only till about 35Vdc, after that the output gets unstable, and the UNREGULATED LED lights up. I cannot adjust the current output, which is stuck at 420mA on the units display. Default voltage when powered up is 370mV. This is with no load connected to the output terminals and the sens terminal strapped to the output.
The power-up self test passes, but if I initiate the complete self test mode, it seems to fail Power Mesh Mode Error 5.
I checked the voltages on the A2 control board and the +15 and -12 Vdc are a little low at +12 and -9Vdc. +5, +15 and -12 Voltages are normal on the A3 front panel board. The control voltages from the DAC for the CC and CV modes all seem to vary from 0 to 5V when I vary the front encoder in both CC and CV modes.
I can't find any documentation on the L version, but do have and have been going by the A version manual. Not sure what the differences are though.
Any help would be greatly appreciated.
Thanks,
Will
