getting started with your new HP 21xx

whether or not the 21MX power supply has the battery backup option. If it does and you don't have a battery backup box attached the CPU will not start without a battery box eliminator plug, which is just an 820ohm resistor across two of the pins in the battery connector plug. I believe the symptom is that all of the front panel LEDs are lit and state lit on power on with the battery backup option installed and with no battery box connected. If the CPU does power up ok and there is memory installed, the low bits of the display should count for every 32kw of memory that is installed and tested. One of the manuals explains that, and what to toggle in to run the test again and in loop mode. Jay, if you do get a collections of diags on CD I would very much like a copy. I have some diags on 2645A tapes, but they have almost all fallen about now. -Glen