I have Spectra Physics T40-8SS power supply with two FCBar diodes that I would like to test to make sure diodes are operational. I do not have laser head nor control unit. I turn on T40 with interlock jumper installed and key in ON position. Unit goes into boot mode, then cooler test and then gets stuck on "Boot Error Close Interlocks to Continue" message. What other interlocks do I need to satisfy to lit up the diodes? Thank you.