Tandy Radio Shack Realistic PRO-2004 Service Manual page 59

IC4 HD14066BP
Contral2 s
Contral3
6
Voo
Control4 InlOu t o - - - - - t - - - - K
Control
~--oOut/ln
ICS.6
/lPC324C
v+
OUT A
A-INPUT
D-iNPUT
A+INPUT
D+INPUT
1NP1J"1 -
v-
Rsc
OUTPUT
B+INPUT
B-INPUT
C-INPUT
+
OUT B
OUT C
7f!T
IC7 TDA190S
GND
Ril
VS
GND
BDOTSTRAP
GND
rHRESHOlD
GND
MUTING
GND
INVERT IN
GND
GND
NON INVERT
GND
INPUT
--58 -