NAD 3140 - Page 35

SB USA 066
Page 2
NOTE:
Install zeners with cathode (stripe) to the right, as seen
from front of unit.
Paul J. Ceurvels
National Service Manager
P.S.
Please note that later production units are manufactured
with a similar circuit:
1) Transistors Q627, Q629 are replaced with 22V ~w zeners.
2) Resistors R677, R678, RG87, R688 are changed from 2.7K
to 3.3K, !w.
5