My A4000T didn't had the PCB-Adaptor, but IIRC there was a line crossed from pin 2 to 34 and visversa. AND three lines to change the drive ID, but I no more remember which one. Sorry
It has something to do with disk ready (or diskchange). But as I ripped the PANASONIC JU257 (IIRC) out and gave the A4000T two real CHINON FZ357A, I had to reverse the Original Hack made by Escom.
(My Serial # of the Tower 000000032 19-Dec-95) The later
builded system had the PCB-board installed.
2. Try to change the jumpers from DS0 to DS1 on the back of the drive.
3. Find a CHINON FZ354 or FZ357A
Markus
