NAD T742, Service Manual

Page: 8 / 65

9 10
OSC RF
VT
BLOCK DIAGRAM
COAXIAL
x2
OPTICAL
x1
74HC153
4053
74LS157
M62446FP
S-V
ideo
Selector CD4052
TEMPERA
TURE
PROTECTION
TUNER
L
TUNER R
POWER DOWN Detect Pin. For SPK of
f,
Mute ON, VFD of
f.
FL T
rigger out
IR IN
FL
OUT2 OUT3 OUT1 OUT4
FR CENTER SL SR SUB
FR CENTER SL SR SUB
V
ideo
Pin
1 IN
13
2 IN
12
3 IN
15
4 IN
14
5 IN
1
3 OUT
3
4 OUT
3
S-V
ideo
Pin
C
Y
1 IN
1
1
4
2 IN
12
1
3 IN
15
2
3 OUT
13
3
V
ideo
Selector CD4051
ADJUSTMENT POINTS DIAGRAM
1. TUNER
2. IDLE CURRENT - Front Amplifier & Surround Amplifier Board