Ensoniq ASR-10 fix
2017-01-16 by xsony30@...
Just completed a repair on an Ensoniq ASR-10 that had the "Error 009-reboot?" message.
After checking power supply voltages and fuses, tried another FDD with neither resolving problem.
Checked L/RCLK signal from pin 1 of AD1879, not getting to Main board from Audio board. With no schematic was able to trace waveform through both sides of audio board, but it did not get to pin 1 of U2. PC feed through under U2 was open. Replaced with short jumper wire and problem resolved.