Sony NWS-1510 Service Manual page 131

IC
SN74AS 1032AN (Tl)
MC74F32N (MOTOROLA)
TTL 2·1NPUT POSITIVE-OR GATE
-TOP VIEW-
SN74AS1034AN (Tl)
TT1. BUFFER/DRIVER
-TOP VIEW-
MC145408P (MOTOROLA)
RS-23:2-CN.28 DRIVER/RECEIVER
-TOP VIEW-
MC 1489AP (MOTOROLA)
OUADflUPLE LINE RECEIVER
-TOP VIEW~
INPUT THRESHOLD SHIFTING
Y•A+a-n
A-[>-Y
y •A
O:LOW LEVEL
1; HIGH LEVEL
I
0; LOW LEVEL
t ;
HIGH L.£YEL
o;
DRIVER
R; RECEIVER
t
(
v
YI \le
(
(
lTintIU
-1
Q
1'
~2
J •
0.t1Y I.IV
INPUT NOISE FILTERING
+.
y
YI Ye
(
5-6
SN75452BP (Tl)
TTL P£RIPHERAL POSITIVE-NANO DRIVER
WITH OPEN-COLLECTOR
-TOP VIEW-
~:{Y-v
=
:~v
SN74HCOON {Tl)
TC74HCOOP
CMOS 2·1NPUT N~D GATE
-TOP VIEW-
Y•A·B •
A+B
A B
y
0
0
I
0 1 I
I 0 I
I I
0
o;
LOW LEVEL
1 ; HIGH LEVEL
::D-v-:D-v
Y•A-l•l+I
*VDO HC;+2to+&V
HCT;+~V
AMPAL 16L8APC (AMO)
AMPAL 16L8B-PC (AMO)
~EMORIESl
PAL16LSB-CN (MONOLITHIC MEMORIES)
PROGRAMMABLE ARRAY LOGIC
-TOP VIEW-
*
ABOVE DIAGRAM SHOWS CONDITIONS BEFORE
WRITING OF DATA.
PCAMPAL16R68-PC (AMD)
PAL16RSB-CN (MONOLITHIC MEMORIES)
PROGRAMMABLE ARRAY LOGIC
- TOP VIEW-
If ABOVE DIAGRAM SHOWS CONDITIONS BEFORE
WRITING OF DATA.
O;LOW LEVEL
1;1tGH LEVEL
NWS-1510/ 1530/1580