Maybe the mixer lost sync. After a couple of messages from the system try again. Recording from DAT or CD to the PC Insert DAT or CD, press play. Signal should show up in channels 1 and 2. Activate channels and monitor left and right, set file name, press record.
Press stop when done.
Recording into a DAT from the PC Insert DAT, put recorder into record standby. Record from PC to DA88 Make sure that the PC is routed to the DA88 in the Z8.8a. Record normally in the DA88. The fader groups cannot be made to control the MultiOut outputs. You can actually mess up everything by moving a fader there and then forgetting about it and going to another page.