<The manual/documentation I have gives a procedure you can follow (manuall <flipping the switches all the way) which is a self-test. Following the <procedure you can check if your 8800b is working correctly. Using this <procedure I tracked down several problems (loose wires to fron panel) bu <still have the address light problem. < <I'll track down the procedure and explain further, if there is any intere Having done that (owner of a 8800 early, early one) I know it well. Allison