NAD C 320 - Page 11

IC BLOCK DIAGRAM
SCHEMATIC DIAGRAM(KEY BOARD)
3 Cathode (kK)
ind if g
a4 i —
2)
2)
o
+
--
secs
WwW
-~
ICO
mt
a
x
a
{a
N
Se
ra)
5
N
O||
=
s
cs)
Oo
7
5
w
[5
|
:
o
al}
w
fe
E
If
u
<
oll 2 no = (8 | N o < E ® O 3
a) 2-4 3 Bie :
0 b, veaal
6 : Q
+
=
8
a
G
3
Reference(R)
dO1a-di4
PORT2/3
PORT2/2
PORT2/1
PORT2/0
PORTO/0
PORT3/3
IC51:74LS00
z N tx
{e)
oa
©
RK
CN
Cc
e
&
&
fe)
re)
Qa
a
PORT3/1
PORT3/2
oS
N te
ie)
a
IC52:IS1U60L
IC44:uPC1237HA
es OVER LOAD DETECTOR aq
OUTPUT OFFSET DETECTOR
IC53: Z86C0812PSC
cy
aald
A
Ay
xD}
CAND
18
: :
~
N33UD]
4,
N33UD|
»
NIBH
-
7@advl
-
xnav
FP
Y3aNnL
3
vs
zsa
90
a
N33u9 038
9040Z2€98N
ON!
NOILDSLONd/N3MOd
2 e040z¢0eN
py
ONIONS:
ObLyNE
essa
yosnis!
ASS,
UN
esol
6d
¥3AIZ034 UI
16M
SISSWHO OL
JINGOW dW 3SION MO7 sae
€£a9' 7e89 OL
BL9u shou
OalsIDAdS SSIINN %0Z AOS 3YV GYVOB A3»% NO SYOLIOVdv9 DINWH39 F
TBNIIdS SSTINN %S ADS A¥V SINGOW dV 3SION MO1NO SHOLIOVdVS SIWWH39 €
O31sI93dS SSFINN %S Wd NOBYVS 3YV ONVOE AZ» NO SHOLSISAY'Z
O3lsIIadS
SSIINN
%S
MY!
W1Id
W13W
Bev
SINGOW
dV
3SION
MO7NO
SHOLSIS3Y
|
‘LON
SWITCH FOR LATCH/AUTO-RESET
957M
ft]
n4o-<